Add popperjspopperjs/v2.21100.20000

284 files changed, 17438 insertions, 0 deletions

diff --git a/popperjs/README.md b/popperjs/README.md
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+```toml
+[[module.imports]]
+path="github.com/gohugoio/hugo-mod-jslibs-dist/popperjs/v2"
+```
+
+With that you can import it in your JS like this:
+
+```js
+import * as Popper from "@popperjs/core";
+```
+
+Note that this module was originally added for https://github.com/gohugoio/hugo-mod-bootstrap-scss
diff --git a/popperjs/config.toml b/popperjs/config.toml
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+++ b/popperjs/config.toml
@@ -0,0 +1,4 @@
+[module]
+[[module.mounts]]
+source = "package/dist/cjs/popper.js"
+target = "assets/@popperjs/core.js"
diff --git a/popperjs/go.mod b/popperjs/go.mod
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+++ b/popperjs/go.mod
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+module github.com/gohugoio/hugo-mod-jslibs-dist/popperjs/v2
+
+go 1.17
diff --git a/popperjs/npmpackage.json b/popperjs/npmpackage.json
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+++ b/popperjs/npmpackage.json
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+{
+  "name": "@popperjs/core",
+  "version": "2.11.0",
+  "dependencies": null,
+  "dist": {
+    "shasum": "6734f8ebc106a0860dff7f92bf90df193f0935d7",
+    "tarball": "https://registry.npmjs.org/@popperjs/core/-/core-2.11.0.tgz"
+  }
+}
\ No newline at end of file
diff --git a/popperjs/package/LICENSE.md b/popperjs/package/LICENSE.md
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+The MIT License (MIT)
+
+Copyright (c) 2019 Federico Zivolo
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/popperjs/package/README.md b/popperjs/package/README.md
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+++ b/popperjs/package/README.md
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+<!-- <HEADER> // IGNORE IT -->
+<p align="center">
+  <img src="https://rawcdn.githack.com/popperjs/popper-core/8805a5d7599e14619c9e7ac19a3713285d8e5d7f/docs/src/images/popper-logo-outlined.svg" alt="Popper" height="300px"/>
+</p>
+
+<div align="center">
+  <h1>Tooltip & Popover Positioning Engine</h1>
+</div>
+
+<p align="center">
+  <a href="https://www.npmjs.com/package/@popperjs/core">
+    <img src="https://img.shields.io/npm/v/@popperjs/core?style=for-the-badge" alt="npm version" />
+  </a>
+  <a href="https://www.npmjs.com/package/@popperjs/core">
+    <img src="https://img.shields.io/endpoint?style=for-the-badge&url=https://runkit.io/fezvrasta/combined-npm-downloads/1.0.0?packages=popper.js,@popperjs/core" alt="npm downloads per month (popper.js + @popperjs/core)" />
+  </a>
+  <a href="https://rollingversions.com/popperjs/popper-core">
+    <img src="https://img.shields.io/badge/Rolling%20Versions-Enabled-brightgreen?style=for-the-badge" alt="Rolling Versions" />
+  </a>
+</p>
+
+<br />
+<!-- </HEADER> // NOW BEGINS THE README -->
+
+**Positioning tooltips and popovers is difficult. Popper is here to help!**
+
+Given an element, such as a button, and a tooltip element describing it, Popper
+will automatically put the tooltip in the right place near the button.
+
+It will position _any_ UI element that "pops out" from the flow of your document
+and floats near a target element. The most common example is a tooltip, but it
+also includes popovers, drop-downs, and more. All of these can be generically
+described as a "popper" element.
+
+## Demo
+
+[![Popper visualized](https://i.imgur.com/F7qWsmV.jpg)](https://popper.js.org)
+
+## Docs
+
+- [v2.x (latest)](https://popper.js.org/docs/v2/)
+- [v1.x](https://popper.js.org/docs/v1/)
+
+We've created a
+[Migration Guide](https://popper.js.org/docs/v2/migration-guide/) to help you
+migrate from Popper 1 to Popper 2.
+
+To contribute to the Popper website and documentation, please visit the
+[dedicated repository](https://github.com/popperjs/website).
+
+## Why not use pure CSS?
+
+- **Clipping and overflow issues**: Pure CSS poppers will not be prevented from
+  overflowing clipping boundaries, such as the viewport. It will get partially
+  cut off or overflows if it's near the edge since there is no dynamic
+  positioning logic. When using Popper, your popper will always be positioned in
+  the right place without needing manual adjustments.
+- **No flipping**: CSS poppers will not flip to a different placement to fit
+  better in view if necessary. While you can manually adjust for the main axis
+  overflow, this feature cannot be achieved via CSS alone. Popper automatically
+  flips the tooltip to make it fit in view as best as possible for the user.
+- **No virtual positioning**: CSS poppers cannot follow the mouse cursor or be
+  used as a context menu. Popper allows you to position your tooltip relative to
+  any coordinates you desire.
+- **Slower development cycle**: When pure CSS is used to position popper
+  elements, the lack of dynamic positioning means they must be carefully placed
+  to consider overflow on all screen sizes. In reusable component libraries,
+  this means a developer can't just add the component anywhere on the page,
+  because these issues need to be considered and adjusted for every time. With
+  Popper, you can place your elements anywhere and they will be positioned
+  correctly, without needing to consider different screen sizes, layouts, etc.
+  This massively speeds up development time because this work is automatically
+  offloaded to Popper.
+- **Lack of extensibility**: CSS poppers cannot be easily extended to fit any
+  arbitrary use case you may need to adjust for. Popper is built with
+  extensibility in mind.
+
+## Why Popper?
+
+With the CSS drawbacks out of the way, we now move on to Popper in the
+JavaScript space itself.
+
+Naive JavaScript tooltip implementations usually have the following problems:
+
+- **Scrolling containers**: They don't ensure the tooltip stays with the
+  reference element while scrolling when inside any number of scrolling
+  containers.
+- **DOM context**: They often require the tooltip move outside of its original
+  DOM context because they don't handle `offsetParent` contexts.
+- **Compatibility**: Popper handles an incredible number of edge cases regarding
+  different browsers and environments (mobile viewports, RTL, scrollbars enabled
+  or disabled, etc.). Popper is a popular and well-maintained library, so you
+  can be confident positioning will work for your users on any device.
+- **Configurability**: They often lack advanced configurability to suit any
+  possible use case.
+- **Size**: They are usually relatively large in size, or require an ancient
+  jQuery dependency.
+- **Performance**: They often have runtime performance issues and update the
+  tooltip position too slowly.
+
+**Popper solves all of these key problems in an elegant, performant manner.** It
+is a lightweight ~3 kB library that aims to provide a reliable and extensible
+positioning engine you can use to ensure all your popper elements are positioned
+in the right place.
+
+When you start writing your own popper implementation, you'll quickly run into
+all of the problems mentioned above. These widgets are incredibly common in our
+UIs; we've done the hard work figuring this out so you don't need to spend hours
+fixing and handling numerous edge cases that we already ran into while building
+the library!
+
+Popper is used in popular libraries like Bootstrap, Foundation, Material UI, and
+more. It's likely you've already used popper elements on the web positioned by
+Popper at some point in the past few years.
+
+Since we write UIs using powerful abstraction libraries such as React or Angular
+nowadays, you'll also be glad to know Popper can fully integrate with them and
+be a good citizen together with your other components. Check out `react-popper`
+for the official Popper wrapper for React.
+
+## Installation
+
+### 1. Package Manager
+
+```bash
+# With npm
+npm i @popperjs/core
+
+# With Yarn
+yarn add @popperjs/core
+```
+
+### 2. CDN
+
+```html
+<!-- Development version -->
+<script src="https://unpkg.com/@popperjs/core@2/dist/umd/popper.js"></script>
+
+<!-- Production version -->
+<script src="https://unpkg.com/@popperjs/core@2"></script>
+```
+
+### 3. Direct Download?
+
+Managing dependencies by "directly downloading" them and placing them into your
+source code is not recommended for a variety of reasons, including missing out
+on feat/fix updates easily. Please use a versioning management system like a CDN
+or npm/Yarn.
+
+## Usage
+
+The most straightforward way to get started is to import Popper from the `unpkg`
+CDN, which includes all of its features. You can call the `Popper.createPopper`
+constructor to create new popper instances.
+
+Here is a complete example:
+
+```html
+<!DOCTYPE html>
+<title>Popper example</title>
+
+<style>
+  #tooltip {
+    background-color: #333;
+    color: white;
+    padding: 5px 10px;
+    border-radius: 4px;
+    font-size: 13px;
+  }
+</style>
+
+<button id="button" aria-describedby="tooltip">I'm a button</button>
+<div id="tooltip" role="tooltip">I'm a tooltip</div>
+
+<script src="https://unpkg.com/@popperjs/core@^2.0.0"></script>
+<script>
+  const button = document.querySelector('#button');
+  const tooltip = document.querySelector('#tooltip');
+
+  // Pass the button, the tooltip, and some options, and Popper will do the
+  // magic positioning for you:
+  Popper.createPopper(button, tooltip, {
+    placement: 'right',
+  });
+</script>
+```
+
+Visit the [tutorial](https://popper.js.org/docs/v2/tutorial/) for an example of
+how to build your own tooltip from scratch using Popper.
+
+### Module bundlers
+
+You can import the `createPopper` constructor from the fully-featured file:
+
+```js
+import { createPopper } from '@popperjs/core';
+
+const button = document.querySelector('#button');
+const tooltip = document.querySelector('#tooltip');
+
+// Pass the button, the tooltip, and some options, and Popper will do the
+// magic positioning for you:
+createPopper(button, tooltip, {
+  placement: 'right',
+});
+```
+
+All the modifiers listed in the docs menu will be enabled and "just work", so
+you don't need to think about setting Popper up. The size of Popper including
+all of its features is about 5 kB minzipped, but it may grow a bit in the
+future.
+
+#### Popper Lite (tree-shaking)
+
+If bundle size is important, you'll want to take advantage of tree-shaking. The
+library is built in a modular way to allow to import only the parts you really
+need.
+
+```js
+import { createPopperLite as createPopper } from '@popperjs/core';
+```
+
+The Lite version includes the most necessary modifiers that will compute the
+offsets of the popper, compute and add the positioning styles, and add event
+listeners. This is close in bundle size to pure CSS tooltip libraries, and
+behaves somewhat similarly.
+
+However, this does not include the features that makes Popper truly useful.
+
+The two most useful modifiers not included in Lite are `preventOverflow` and
+`flip`:
+
+```js
+import {
+  createPopperLite as createPopper,
+  preventOverflow,
+  flip,
+} from '@popperjs/core';
+
+const button = document.querySelector('#button');
+const tooltip = document.querySelector('#tooltip');
+
+createPopper(button, tooltip, {
+  modifiers: [preventOverflow, flip],
+});
+```
+
+As you make more poppers, you may be finding yourself needing other modifiers
+provided by the library.
+
+See [tree-shaking](https://popper.js.org/docs/v2/tree-shaking/) for more
+information.
+
+## Distribution targets
+
+Popper is distributed in 3 different versions, in 3 different file formats.
+
+The 3 file formats are:
+
+- `esm` (works with `import` syntax — **recommended**)
+- `umd` (works with `<script>` tags or RequireJS)
+- `cjs` (works with `require()` syntax)
+
+There are two different `esm` builds, one for bundler consumers (e.g. webpack,
+Rollup, etc..), which is located under `/lib`, and one for browsers with native
+support for ES Modules, under `/dist/esm`. The only difference within the two,
+is that the browser-compatible version doesn't make use of
+`process.env.NODE_ENV` to run development checks.
+
+The 3 versions are:
+
+- `popper`: includes all the modifiers (features) in one file (**default**);
+- `popper-lite`: includes only the minimum amount of modifiers to provide the
+  basic functionality;
+- `popper-base`: doesn't include any modifier, you must import them separately;
+
+Below you can find the size of each version, minified and compressed with the
+[Brotli compression algorithm](https://medium.com/groww-engineering/enable-brotli-compression-in-webpack-with-fallback-to-gzip-397a57cf9fc6):
+
+<!-- Don't change the labels to use hyphens, it breaks, even when encoded -->
+
+![](https://badge-size.now.sh/https://unpkg.com/@popperjs/core/dist/umd/popper.min.js?compression=brotli&label=popper)
+![](https://badge-size.now.sh/https://unpkg.com/@popperjs/core/dist/umd/popper-lite.min.js?compression=brotli&label=popper%20lite)
+![](https://badge-size.now.sh/https://unpkg.com/@popperjs/core/dist/umd/popper-base.min.js?compression=brotli&label=popper%20base)
+
+## Hacking the library
+
+If you want to play with the library, implement new features, fix a bug you
+found, or simply experiment with it, this section is for you!
+
+First of all, make sure to have
+[Yarn installed](https://yarnpkg.com/lang/en/docs/install).
+
+Install the development dependencies:
+
+```bash
+yarn install
+```
+
+And run the development environment:
+
+```bash
+yarn dev
+```
+
+Then, simply open one the development server web page:
+
+```bash
+# macOS and Linux
+open localhost:5000
+
+# Windows
+start localhost:5000
+```
+
+From there, you can open any of the examples (`.html` files) to fiddle with
+them.
+
+Now any change you will made to the source code, will be automatically compiled,
+you just need to refresh the page.
+
+If the page is not working properly, try to go in _"Developer Tools >
+Application > Clear storage"_ and click on "_Clear site data_".  
+To run the examples you need a browser with
+[JavaScript modules via script tag support](https://caniuse.com/#feat=es6-module).
+
+## Test Suite
+
+Popper is currently tested with unit tests, and functional tests. Both of them
+are run by Jest.
+
+### Unit Tests
+
+The unit tests use JSDOM to provide a primitive document object API, they are
+used to ensure the utility functions behave as expected in isolation.
+
+### Functional Tests
+
+The functional tests run with Puppeteer, to take advantage of a complete browser
+environment. They are currently running on Chromium, and Firefox.
+
+You can run them with `yarn test:functional`. Set the `PUPPETEER_BROWSER`
+environment variable to `firefox` to run them on the Mozilla browser.
+
+The assertions are written in form of image snapshots, so that it's easy to
+assert for the correct Popper behavior without having to write a lot of offsets
+comparisons manually.
+
+You can mark a `*.test.js` file to run in the Puppeteer environment by
+prepending a `@jest-environment puppeteer` JSDoc comment to the interested file.
+
+Here's an example of a basic functional test:
+
+```js
+/**
+ * @jest-environment puppeteer
+ * @flow
+ */
+import { screenshot } from '../utils/puppeteer.js';
+
+it('should position the popper on the right', async () => {
+  const page = await browser.newPage();
+  await page.goto(`${TEST_URL}/basic.html`);
+
+  expect(await screenshot(page)).toMatchImageSnapshot();
+});
+```
+
+You can find the complete
+[`jest-puppeteer` documentation here](https://github.com/smooth-code/jest-puppeteer#api),
+and the
+[`jest-image-snapshot` documentation here](https://github.com/americanexpress/jest-image-snapshot#%EF%B8%8F-api).
+
+## License
+
+MIT
diff --git a/popperjs/package/dist/cjs/enums.js b/popperjs/package/dist/cjs/enums.js
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+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var top = 'top';
+var bottom = 'bottom';
+var right = 'right';
+var left = 'left';
+var auto = 'auto';
+var basePlacements = [top, bottom, right, left];
+var start = 'start';
+var end = 'end';
+var clippingParents = 'clippingParents';
+var viewport = 'viewport';
+var popper = 'popper';
+var reference = 'reference';
+var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
+  return acc.concat([placement + "-" + start, placement + "-" + end]);
+}, []);
+var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
+  return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
+}, []); // modifiers that need to read the DOM
+
+var beforeRead = 'beforeRead';
+var read = 'read';
+var afterRead = 'afterRead'; // pure-logic modifiers
+
+var beforeMain = 'beforeMain';
+var main = 'main';
+var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+var beforeWrite = 'beforeWrite';
+var write = 'write';
+var afterWrite = 'afterWrite';
+var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+exports.afterMain = afterMain;
+exports.afterRead = afterRead;
+exports.afterWrite = afterWrite;
+exports.auto = auto;
+exports.basePlacements = basePlacements;
+exports.beforeMain = beforeMain;
+exports.beforeRead = beforeRead;
+exports.beforeWrite = beforeWrite;
+exports.bottom = bottom;
+exports.clippingParents = clippingParents;
+exports.end = end;
+exports.left = left;
+exports.main = main;
+exports.modifierPhases = modifierPhases;
+exports.placements = placements;
+exports.popper = popper;
+exports.read = read;
+exports.reference = reference;
+exports.right = right;
+exports.start = start;
+exports.top = top;
+exports.variationPlacements = variationPlacements;
+exports.viewport = viewport;
+exports.write = write;
+//# sourceMappingURL=enums.js.map
diff --git a/popperjs/package/dist/cjs/enums.js.flow b/popperjs/package/dist/cjs/enums.js.flow
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+++ b/popperjs/package/dist/cjs/enums.js.flow
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+// @flow
+
+export * from '../../lib/enums.js'
diff --git a/popperjs/package/dist/cjs/enums.js.map b/popperjs/package/dist/cjs/enums.js.map
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+++ b/popperjs/package/dist/cjs/enums.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"enums.js","sources":["../../src/enums.js"],"sourcesContent":["// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n"],"names":["top","bottom","right","left","auto","basePlacements","start","end","clippingParents","viewport","popper","reference","variationPlacements","reduce","acc","placement","concat","placements","beforeRead","read","afterRead","beforeMain","main","afterMain","beforeWrite","write","afterWrite","modifierPhases"],"mappings":";;;;;;;;IACaA,GAAU,GAAG;IACbC,MAAgB,GAAG;IACnBC,KAAc,GAAG;IACjBC,IAAY,GAAG;IACfC,IAAY,GAAG;IAMfC,cAAoC,GAAG,CAACL,GAAD,EAAMC,MAAN,EAAcC,KAAd,EAAqBC,IAArB;IAEvCG,KAAc,GAAG;IACjBC,GAAU,GAAG;IAGbC,eAAkC,GAAG;IACrCC,QAAoB,GAAG;IAIvBC,MAAgB,GAAG;IACnBC,SAAsB,GAAG;IAgBzBC,mBAA8C,gBAAGP,cAAc,CAACQ,MAAf,CAC5D,UAACC,GAAD,EAAiCC,SAAjC;AAAA,SACED,GAAG,CAACE,MAAJ,CAAW,CAAKD,SAAL,SAAkBT,KAAlB,EAAqCS,SAArC,SAAkDR,GAAlD,CAAX,CADF;AAAA,CAD4D,EAG5D,EAH4D;IAKjDU,UAA4B,gBAAG,UAAIZ,cAAJ,GAAoBD,IAApB,GAA0BS,MAA1B,CAC1C,UACEC,GADF,EAEEC,SAFF;AAAA,SAIED,GAAG,CAACE,MAAJ,CAAW,CACTD,SADS,EAELA,SAFK,SAEQT,KAFR,EAGLS,SAHK,SAGQR,GAHR,CAAX,CAJF;AAAA,CAD0C,EAU1C,EAV0C;;IAc/BW,UAAwB,GAAG;IAC3BC,IAAY,GAAG;IACfC,SAAsB,GAAG;;IAEzBC,UAAwB,GAAG;IAC3BC,IAAY,GAAG;IACfC,SAAsB,GAAG;;IAEzBC,WAA0B,GAAG;IAC7BC,KAAc,GAAG;IACjBC,UAAwB,GAAG;IAC3BC,cAAqC,GAAG,CACnDT,UADmD,EAEnDC,IAFmD,EAGnDC,SAHmD,EAInDC,UAJmD,EAKnDC,IALmD,EAMnDC,SANmD,EAOnDC,WAPmD,EAQnDC,KARmD,EASnDC,UATmD;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
diff --git a/popperjs/package/dist/cjs/popper-base.js b/popperjs/package/dist/cjs/popper-base.js
new file mode 100644
index 0000000..27130e7
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper-base.js
@@ -0,0 +1,1082 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+function getWindow(node) {
+  if (node == null) {
+    return window;
+  }
+
+  if (node.toString() !== '[object Window]') {
+    var ownerDocument = node.ownerDocument;
+    return ownerDocument ? ownerDocument.defaultView || window : window;
+  }
+
+  return node;
+}
+
+function isElement(node) {
+  var OwnElement = getWindow(node).Element;
+  return node instanceof OwnElement || node instanceof Element;
+}
+
+function isHTMLElement(node) {
+  var OwnElement = getWindow(node).HTMLElement;
+  return node instanceof OwnElement || node instanceof HTMLElement;
+}
+
+function isShadowRoot(node) {
+  // IE 11 has no ShadowRoot
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+
+  var OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+
+var max = Math.max;
+var min = Math.min;
+var round = Math.round;
+
+function getBoundingClientRect(element, includeScale) {
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+
+  var rect = element.getBoundingClientRect();
+  var scaleX = 1;
+  var scaleY = 1;
+
+  if (isHTMLElement(element) && includeScale) {
+    var offsetHeight = element.offsetHeight;
+    var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+    // Fallback to 1 in case both values are `0`
+
+    if (offsetWidth > 0) {
+      scaleX = round(rect.width) / offsetWidth || 1;
+    }
+
+    if (offsetHeight > 0) {
+      scaleY = round(rect.height) / offsetHeight || 1;
+    }
+  }
+
+  return {
+    width: rect.width / scaleX,
+    height: rect.height / scaleY,
+    top: rect.top / scaleY,
+    right: rect.right / scaleX,
+    bottom: rect.bottom / scaleY,
+    left: rect.left / scaleX,
+    x: rect.left / scaleX,
+    y: rect.top / scaleY
+  };
+}
+
+function getWindowScroll(node) {
+  var win = getWindow(node);
+  var scrollLeft = win.pageXOffset;
+  var scrollTop = win.pageYOffset;
+  return {
+    scrollLeft: scrollLeft,
+    scrollTop: scrollTop
+  };
+}
+
+function getHTMLElementScroll(element) {
+  return {
+    scrollLeft: element.scrollLeft,
+    scrollTop: element.scrollTop
+  };
+}
+
+function getNodeScroll(node) {
+  if (node === getWindow(node) || !isHTMLElement(node)) {
+    return getWindowScroll(node);
+  } else {
+    return getHTMLElementScroll(node);
+  }
+}
+
+function getNodeName(element) {
+  return element ? (element.nodeName || '').toLowerCase() : null;
+}
+
+function getDocumentElement(element) {
+  // $FlowFixMe[incompatible-return]: assume body is always available
+  return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+  element.document) || window.document).documentElement;
+}
+
+function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  // Popper 1 is broken in this case and never had a bug report so let's assume
+  // it's not an issue. I don't think anyone ever specifies width on <html>
+  // anyway.
+  // Browsers where the left scrollbar doesn't cause an issue report `0` for
+  // this (e.g. Edge 2019, IE11, Safari)
+  return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+}
+
+function getComputedStyle(element) {
+  return getWindow(element).getComputedStyle(element);
+}
+
+function isScrollParent(element) {
+  // Firefox wants us to check `-x` and `-y` variations as well
+  var _getComputedStyle = getComputedStyle(element),
+      overflow = _getComputedStyle.overflow,
+      overflowX = _getComputedStyle.overflowX,
+      overflowY = _getComputedStyle.overflowY;
+
+  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+}
+
+function isElementScaled(element) {
+  var rect = element.getBoundingClientRect();
+  var scaleX = round(rect.width) / element.offsetWidth || 1;
+  var scaleY = round(rect.height) / element.offsetHeight || 1;
+  return scaleX !== 1 || scaleY !== 1;
+} // Returns the composite rect of an element relative to its offsetParent.
+// Composite means it takes into account transforms as well as layout.
+
+
+function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+  if (isFixed === void 0) {
+    isFixed = false;
+  }
+
+  var isOffsetParentAnElement = isHTMLElement(offsetParent);
+  var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+  var documentElement = getDocumentElement(offsetParent);
+  var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+  var scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  var offsets = {
+    x: 0,
+    y: 0
+  };
+
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+    if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+    isScrollParent(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+
+    if (isHTMLElement(offsetParent)) {
+      offsets = getBoundingClientRect(offsetParent, true);
+      offsets.x += offsetParent.clientLeft;
+      offsets.y += offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
+
+// means it doesn't take into account transforms.
+
+function getLayoutRect(element) {
+  var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+  // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+  var width = element.offsetWidth;
+  var height = element.offsetHeight;
+
+  if (Math.abs(clientRect.width - width) <= 1) {
+    width = clientRect.width;
+  }
+
+  if (Math.abs(clientRect.height - height) <= 1) {
+    height = clientRect.height;
+  }
+
+  return {
+    x: element.offsetLeft,
+    y: element.offsetTop,
+    width: width,
+    height: height
+  };
+}
+
+function getParentNode(element) {
+  if (getNodeName(element) === 'html') {
+    return element;
+  }
+
+  return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+    // $FlowFixMe[incompatible-return]
+    // $FlowFixMe[prop-missing]
+    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+    element.parentNode || ( // DOM Element detected
+    isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+    // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+    getDocumentElement(element) // fallback
+
+  );
+}
+
+function getScrollParent(node) {
+  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return node.ownerDocument.body;
+  }
+
+  if (isHTMLElement(node) && isScrollParent(node)) {
+    return node;
+  }
+
+  return getScrollParent(getParentNode(node));
+}
+
+/*
+given a DOM element, return the list of all scroll parents, up the list of ancesors
+until we get to the top window object. This list is what we attach scroll listeners
+to, because if any of these parent elements scroll, we'll need to re-calculate the
+reference element's position.
+*/
+
+function listScrollParents(element, list) {
+  var _element$ownerDocumen;
+
+  if (list === void 0) {
+    list = [];
+  }
+
+  var scrollParent = getScrollParent(element);
+  var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+  var win = getWindow(scrollParent);
+  var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+  var updatedList = list.concat(target);
+  return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+  updatedList.concat(listScrollParents(getParentNode(target)));
+}
+
+function isTableElement(element) {
+  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+}
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+  getComputedStyle(element).position === 'fixed') {
+    return null;
+  }
+
+  return element.offsetParent;
+} // `.offsetParent` reports `null` for fixed elements, while absolute elements
+// return the containing block
+
+
+function getContainingBlock(element) {
+  var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+  var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+  if (isIE && isHTMLElement(element)) {
+    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+    var elementCss = getComputedStyle(element);
+
+    if (elementCss.position === 'fixed') {
+      return null;
+    }
+  }
+
+  var currentNode = getParentNode(element);
+
+  while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+    var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+    // create a containing block.
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+    if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+      return currentNode;
+    } else {
+      currentNode = currentNode.parentNode;
+    }
+  }
+
+  return null;
+} // Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+
+
+function getOffsetParent(element) {
+  var window = getWindow(element);
+  var offsetParent = getTrueOffsetParent(element);
+
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+    return window;
+  }
+
+  return offsetParent || getContainingBlock(element) || window;
+}
+
+var top = 'top';
+var bottom = 'bottom';
+var right = 'right';
+var left = 'left';
+var auto = 'auto';
+var basePlacements = [top, bottom, right, left];
+var start = 'start';
+var end = 'end';
+var clippingParents = 'clippingParents';
+var viewport = 'viewport';
+var popper = 'popper';
+var reference = 'reference';
+
+var beforeRead = 'beforeRead';
+var read = 'read';
+var afterRead = 'afterRead'; // pure-logic modifiers
+
+var beforeMain = 'beforeMain';
+var main = 'main';
+var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+var beforeWrite = 'beforeWrite';
+var write = 'write';
+var afterWrite = 'afterWrite';
+var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+function order(modifiers) {
+  var map = new Map();
+  var visited = new Set();
+  var result = [];
+  modifiers.forEach(function (modifier) {
+    map.set(modifier.name, modifier);
+  }); // On visiting object, check for its dependencies and visit them recursively
+
+  function sort(modifier) {
+    visited.add(modifier.name);
+    var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+    requires.forEach(function (dep) {
+      if (!visited.has(dep)) {
+        var depModifier = map.get(dep);
+
+        if (depModifier) {
+          sort(depModifier);
+        }
+      }
+    });
+    result.push(modifier);
+  }
+
+  modifiers.forEach(function (modifier) {
+    if (!visited.has(modifier.name)) {
+      // check for visited object
+      sort(modifier);
+    }
+  });
+  return result;
+}
+
+function orderModifiers(modifiers) {
+  // order based on dependencies
+  var orderedModifiers = order(modifiers); // order based on phase
+
+  return modifierPhases.reduce(function (acc, phase) {
+    return acc.concat(orderedModifiers.filter(function (modifier) {
+      return modifier.phase === phase;
+    }));
+  }, []);
+}
+
+function debounce(fn) {
+  var pending;
+  return function () {
+    if (!pending) {
+      pending = new Promise(function (resolve) {
+        Promise.resolve().then(function () {
+          pending = undefined;
+          resolve(fn());
+        });
+      });
+    }
+
+    return pending;
+  };
+}
+
+function format(str) {
+  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    args[_key - 1] = arguments[_key];
+  }
+
+  return [].concat(args).reduce(function (p, c) {
+    return p.replace(/%s/, c);
+  }, str);
+}
+
+var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+function validateModifiers(modifiers) {
+  modifiers.forEach(function (modifier) {
+    [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+    .filter(function (value, index, self) {
+      return self.indexOf(value) === index;
+    }).forEach(function (key) {
+      switch (key) {
+        case 'name':
+          if (typeof modifier.name !== 'string') {
+            console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+          }
+
+          break;
+
+        case 'enabled':
+          if (typeof modifier.enabled !== 'boolean') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+          }
+
+          break;
+
+        case 'phase':
+          if (modifierPhases.indexOf(modifier.phase) < 0) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+          }
+
+          break;
+
+        case 'fn':
+          if (typeof modifier.fn !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'effect':
+          if (modifier.effect != null && typeof modifier.effect !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'requires':
+          if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+          }
+
+          break;
+
+        case 'requiresIfExists':
+          if (!Array.isArray(modifier.requiresIfExists)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+          }
+
+          break;
+
+        case 'options':
+        case 'data':
+          break;
+
+        default:
+          console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+            return "\"" + s + "\"";
+          }).join(', ') + "; but \"" + key + "\" was provided.");
+      }
+
+      modifier.requires && modifier.requires.forEach(function (requirement) {
+        if (modifiers.find(function (mod) {
+          return mod.name === requirement;
+        }) == null) {
+          console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+        }
+      });
+    });
+  });
+}
+
+function uniqueBy(arr, fn) {
+  var identifiers = new Set();
+  return arr.filter(function (item) {
+    var identifier = fn(item);
+
+    if (!identifiers.has(identifier)) {
+      identifiers.add(identifier);
+      return true;
+    }
+  });
+}
+
+function getBasePlacement(placement) {
+  return placement.split('-')[0];
+}
+
+function mergeByName(modifiers) {
+  var merged = modifiers.reduce(function (merged, current) {
+    var existing = merged[current.name];
+    merged[current.name] = existing ? Object.assign({}, existing, current, {
+      options: Object.assign({}, existing.options, current.options),
+      data: Object.assign({}, existing.data, current.data)
+    }) : current;
+    return merged;
+  }, {}); // IE11 does not support Object.values
+
+  return Object.keys(merged).map(function (key) {
+    return merged[key];
+  });
+}
+
+function getViewportRect(element) {
+  var win = getWindow(element);
+  var html = getDocumentElement(element);
+  var visualViewport = win.visualViewport;
+  var width = html.clientWidth;
+  var height = html.clientHeight;
+  var x = 0;
+  var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+  // can be obscured underneath it.
+  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+  // if it isn't open, so if this isn't available, the popper will be detected
+  // to overflow the bottom of the screen too early.
+
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+    // errors due to floating point numbers, so we need to check precision.
+    // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+    // Feature detection fails in mobile emulation mode in Chrome.
+    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+    // 0.001
+    // Fallback here: "Not Safari" userAgent
+
+    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x + getWindowScrollBarX(element),
+    y: y
+  };
+}
+
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+function getDocumentRect(element) {
+  var _element$ownerDocumen;
+
+  var html = getDocumentElement(element);
+  var winScroll = getWindowScroll(element);
+  var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+  var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+  var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+  var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+  var y = -winScroll.scrollTop;
+
+  if (getComputedStyle(body || html).direction === 'rtl') {
+    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x,
+    y: y
+  };
+}
+
+function contains(parent, child) {
+  var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+  if (parent.contains(child)) {
+    return true;
+  } // then fallback to custom implementation with Shadow DOM support
+  else if (rootNode && isShadowRoot(rootNode)) {
+      var next = child;
+
+      do {
+        if (next && parent.isSameNode(next)) {
+          return true;
+        } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+        next = next.parentNode || next.host;
+      } while (next);
+    } // Give up, the result is false
+
+
+  return false;
+}
+
+function rectToClientRect(rect) {
+  return Object.assign({}, rect, {
+    left: rect.x,
+    top: rect.y,
+    right: rect.x + rect.width,
+    bottom: rect.y + rect.height
+  });
+}
+
+function getInnerBoundingClientRect(element) {
+  var rect = getBoundingClientRect(element);
+  rect.top = rect.top + element.clientTop;
+  rect.left = rect.left + element.clientLeft;
+  rect.bottom = rect.top + element.clientHeight;
+  rect.right = rect.left + element.clientWidth;
+  rect.width = element.clientWidth;
+  rect.height = element.clientHeight;
+  rect.x = rect.left;
+  rect.y = rect.top;
+  return rect;
+}
+
+function getClientRectFromMixedType(element, clippingParent) {
+  return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+} // A "clipping parent" is an overflowable container with the characteristic of
+// clipping (or hiding) overflowing elements with a position different from
+// `initial`
+
+
+function getClippingParents(element) {
+  var clippingParents = listScrollParents(getParentNode(element));
+  var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+  var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+  if (!isElement(clipperElement)) {
+    return [];
+  } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+  return clippingParents.filter(function (clippingParent) {
+    return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+  });
+} // Gets the maximum area that the element is visible in due to any number of
+// clipping parents
+
+
+function getClippingRect(element, boundary, rootBoundary) {
+  var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+  var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+  var firstClippingParent = clippingParents[0];
+  var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+    var rect = getClientRectFromMixedType(element, clippingParent);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromMixedType(element, firstClippingParent));
+  clippingRect.width = clippingRect.right - clippingRect.left;
+  clippingRect.height = clippingRect.bottom - clippingRect.top;
+  clippingRect.x = clippingRect.left;
+  clippingRect.y = clippingRect.top;
+  return clippingRect;
+}
+
+function getVariation(placement) {
+  return placement.split('-')[1];
+}
+
+function getMainAxisFromPlacement(placement) {
+  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+}
+
+function computeOffsets(_ref) {
+  var reference = _ref.reference,
+      element = _ref.element,
+      placement = _ref.placement;
+  var basePlacement = placement ? getBasePlacement(placement) : null;
+  var variation = placement ? getVariation(placement) : null;
+  var commonX = reference.x + reference.width / 2 - element.width / 2;
+  var commonY = reference.y + reference.height / 2 - element.height / 2;
+  var offsets;
+
+  switch (basePlacement) {
+    case top:
+      offsets = {
+        x: commonX,
+        y: reference.y - element.height
+      };
+      break;
+
+    case bottom:
+      offsets = {
+        x: commonX,
+        y: reference.y + reference.height
+      };
+      break;
+
+    case right:
+      offsets = {
+        x: reference.x + reference.width,
+        y: commonY
+      };
+      break;
+
+    case left:
+      offsets = {
+        x: reference.x - element.width,
+        y: commonY
+      };
+      break;
+
+    default:
+      offsets = {
+        x: reference.x,
+        y: reference.y
+      };
+  }
+
+  var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+  if (mainAxis != null) {
+    var len = mainAxis === 'y' ? 'height' : 'width';
+
+    switch (variation) {
+      case start:
+        offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+        break;
+
+      case end:
+        offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+        break;
+    }
+  }
+
+  return offsets;
+}
+
+function getFreshSideObject() {
+  return {
+    top: 0,
+    right: 0,
+    bottom: 0,
+    left: 0
+  };
+}
+
+function mergePaddingObject(paddingObject) {
+  return Object.assign({}, getFreshSideObject(), paddingObject);
+}
+
+function expandToHashMap(value, keys) {
+  return keys.reduce(function (hashMap, key) {
+    hashMap[key] = value;
+    return hashMap;
+  }, {});
+}
+
+function detectOverflow(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      _options$placement = _options.placement,
+      placement = _options$placement === void 0 ? state.placement : _options$placement,
+      _options$boundary = _options.boundary,
+      boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+      _options$rootBoundary = _options.rootBoundary,
+      rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+      _options$elementConte = _options.elementContext,
+      elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+      _options$altBoundary = _options.altBoundary,
+      altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+      _options$padding = _options.padding,
+      padding = _options$padding === void 0 ? 0 : _options$padding;
+  var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+  var altContext = elementContext === popper ? reference : popper;
+  var popperRect = state.rects.popper;
+  var element = state.elements[altBoundary ? altContext : elementContext];
+  var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+  var referenceClientRect = getBoundingClientRect(state.elements.reference);
+  var popperOffsets = computeOffsets({
+    reference: referenceClientRect,
+    element: popperRect,
+    strategy: 'absolute',
+    placement: placement
+  });
+  var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+  var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+  // 0 or negative = within the clipping rect
+
+  var overflowOffsets = {
+    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+    bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+    right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+  };
+  var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+  if (elementContext === popper && offsetData) {
+    var offset = offsetData[placement];
+    Object.keys(overflowOffsets).forEach(function (key) {
+      var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+      var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+      overflowOffsets[key] += offset[axis] * multiply;
+    });
+  }
+
+  return overflowOffsets;
+}
+
+var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+var DEFAULT_OPTIONS = {
+  placement: 'bottom',
+  modifiers: [],
+  strategy: 'absolute'
+};
+
+function areValidElements() {
+  for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+    args[_key] = arguments[_key];
+  }
+
+  return !args.some(function (element) {
+    return !(element && typeof element.getBoundingClientRect === 'function');
+  });
+}
+
+function popperGenerator(generatorOptions) {
+  if (generatorOptions === void 0) {
+    generatorOptions = {};
+  }
+
+  var _generatorOptions = generatorOptions,
+      _generatorOptions$def = _generatorOptions.defaultModifiers,
+      defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+      _generatorOptions$def2 = _generatorOptions.defaultOptions,
+      defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+  return function createPopper(reference, popper, options) {
+    if (options === void 0) {
+      options = defaultOptions;
+    }
+
+    var state = {
+      placement: 'bottom',
+      orderedModifiers: [],
+      options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+      modifiersData: {},
+      elements: {
+        reference: reference,
+        popper: popper
+      },
+      attributes: {},
+      styles: {}
+    };
+    var effectCleanupFns = [];
+    var isDestroyed = false;
+    var instance = {
+      state: state,
+      setOptions: function setOptions(setOptionsAction) {
+        var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+        cleanupModifierEffects();
+        state.options = Object.assign({}, defaultOptions, state.options, options);
+        state.scrollParents = {
+          reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+          popper: listScrollParents(popper)
+        }; // Orders the modifiers based on their dependencies and `phase`
+        // properties
+
+        var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+        state.orderedModifiers = orderedModifiers.filter(function (m) {
+          return m.enabled;
+        }); // Validate the provided modifiers so that the consumer will get warned
+        // if one of the modifiers is invalid for any reason
+
+        if (process.env.NODE_ENV !== "production") {
+          var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+            var name = _ref.name;
+            return name;
+          });
+          validateModifiers(modifiers);
+
+          if (getBasePlacement(state.options.placement) === auto) {
+            var flipModifier = state.orderedModifiers.find(function (_ref2) {
+              var name = _ref2.name;
+              return name === 'flip';
+            });
+
+            if (!flipModifier) {
+              console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+            }
+          }
+
+          var _getComputedStyle = getComputedStyle(popper),
+              marginTop = _getComputedStyle.marginTop,
+              marginRight = _getComputedStyle.marginRight,
+              marginBottom = _getComputedStyle.marginBottom,
+              marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+          // cause bugs with positioning, so we'll warn the consumer
+
+
+          if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+            return parseFloat(margin);
+          })) {
+            console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+          }
+        }
+
+        runModifierEffects();
+        return instance.update();
+      },
+      // Sync update – it will always be executed, even if not necessary. This
+      // is useful for low frequency updates where sync behavior simplifies the
+      // logic.
+      // For high frequency updates (e.g. `resize` and `scroll` events), always
+      // prefer the async Popper#update method
+      forceUpdate: function forceUpdate() {
+        if (isDestroyed) {
+          return;
+        }
+
+        var _state$elements = state.elements,
+            reference = _state$elements.reference,
+            popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+        // anymore
+
+        if (!areValidElements(reference, popper)) {
+          if (process.env.NODE_ENV !== "production") {
+            console.error(INVALID_ELEMENT_ERROR);
+          }
+
+          return;
+        } // Store the reference and popper rects to be read by modifiers
+
+
+        state.rects = {
+          reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+          popper: getLayoutRect(popper)
+        }; // Modifiers have the ability to reset the current update cycle. The
+        // most common use case for this is the `flip` modifier changing the
+        // placement, which then needs to re-run all the modifiers, because the
+        // logic was previously ran for the previous placement and is therefore
+        // stale/incorrect
+
+        state.reset = false;
+        state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+        // is filled with the initial data specified by the modifier. This means
+        // it doesn't persist and is fresh on each update.
+        // To ensure persistent data, use `${name}#persistent`
+
+        state.orderedModifiers.forEach(function (modifier) {
+          return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+        });
+        var __debug_loops__ = 0;
+
+        for (var index = 0; index < state.orderedModifiers.length; index++) {
+          if (process.env.NODE_ENV !== "production") {
+            __debug_loops__ += 1;
+
+            if (__debug_loops__ > 100) {
+              console.error(INFINITE_LOOP_ERROR);
+              break;
+            }
+          }
+
+          if (state.reset === true) {
+            state.reset = false;
+            index = -1;
+            continue;
+          }
+
+          var _state$orderedModifie = state.orderedModifiers[index],
+              fn = _state$orderedModifie.fn,
+              _state$orderedModifie2 = _state$orderedModifie.options,
+              _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+              name = _state$orderedModifie.name;
+
+          if (typeof fn === 'function') {
+            state = fn({
+              state: state,
+              options: _options,
+              name: name,
+              instance: instance
+            }) || state;
+          }
+        }
+      },
+      // Async and optimistically optimized update – it will not be executed if
+      // not necessary (debounced to run at most once-per-tick)
+      update: debounce(function () {
+        return new Promise(function (resolve) {
+          instance.forceUpdate();
+          resolve(state);
+        });
+      }),
+      destroy: function destroy() {
+        cleanupModifierEffects();
+        isDestroyed = true;
+      }
+    };
+
+    if (!areValidElements(reference, popper)) {
+      if (process.env.NODE_ENV !== "production") {
+        console.error(INVALID_ELEMENT_ERROR);
+      }
+
+      return instance;
+    }
+
+    instance.setOptions(options).then(function (state) {
+      if (!isDestroyed && options.onFirstUpdate) {
+        options.onFirstUpdate(state);
+      }
+    }); // Modifiers have the ability to execute arbitrary code before the first
+    // update cycle runs. They will be executed in the same order as the update
+    // cycle. This is useful when a modifier adds some persistent data that
+    // other modifiers need to use, but the modifier is run after the dependent
+    // one.
+
+    function runModifierEffects() {
+      state.orderedModifiers.forEach(function (_ref3) {
+        var name = _ref3.name,
+            _ref3$options = _ref3.options,
+            options = _ref3$options === void 0 ? {} : _ref3$options,
+            effect = _ref3.effect;
+
+        if (typeof effect === 'function') {
+          var cleanupFn = effect({
+            state: state,
+            name: name,
+            instance: instance,
+            options: options
+          });
+
+          var noopFn = function noopFn() {};
+
+          effectCleanupFns.push(cleanupFn || noopFn);
+        }
+      });
+    }
+
+    function cleanupModifierEffects() {
+      effectCleanupFns.forEach(function (fn) {
+        return fn();
+      });
+      effectCleanupFns = [];
+    }
+
+    return instance;
+  };
+}
+var createPopper = /*#__PURE__*/popperGenerator(); // eslint-disable-next-line import/no-unused-modules
+
+exports.createPopper = createPopper;
+exports.detectOverflow = detectOverflow;
+exports.popperGenerator = popperGenerator;
+//# sourceMappingURL=popper-base.js.map
diff --git a/popperjs/package/dist/cjs/popper-base.js.flow b/popperjs/package/dist/cjs/popper-base.js.flow
new file mode 100644
index 0000000..22d88eb
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper-base.js.flow
@@ -0,0 +1,3 @@
+// @flow
+
+export * from '../../lib/popper-base.js'
diff --git a/popperjs/package/dist/cjs/popper-base.js.map b/popperjs/package/dist/cjs/popper-base.js.map
new file mode 100644
index 0000000..445f2b1
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper-base.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-base.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/utils/math.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/isTableElement.js","../../src/dom-utils/getOffsetParent.js","../../src/enums.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/format.js","../../src/utils/validateModifiers.js","../../src/utils/uniqueBy.js","../../src/utils/getBasePlacement.js","../../src/utils/mergeByName.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/utils/computeOffsets.js","../../src/utils/getFreshSideObject.js","../../src/utils/mergePaddingObject.js","../../src/utils/expandToHashMap.js","../../src/utils/detectOverflow.js","../../src/createPopper.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\n\nexport default function format(str: string, ...args: Array<string>) {\n  return [...args].reduce((p, c) => p.replace(/%s/, c), str);\n}\n","// @flow\nimport format from './format';\nimport { modifierPhases } from '../enums';\n\nconst INVALID_MODIFIER_ERROR =\n  'Popper: modifier \"%s\" provided an invalid %s property, expected %s but got %s';\nconst MISSING_DEPENDENCY_ERROR =\n  'Popper: modifier \"%s\" requires \"%s\", but \"%s\" modifier is not available';\nconst VALID_PROPERTIES = [\n  'name',\n  'enabled',\n  'phase',\n  'fn',\n  'effect',\n  'requires',\n  'options',\n];\n\nexport default function validateModifiers(modifiers: Array<any>): void {\n  modifiers.forEach((modifier) => {\n    [...Object.keys(modifier), ...VALID_PROPERTIES]\n      // IE11-compatible replacement for `new Set(iterable)`\n      .filter((value, index, self) => self.indexOf(value) === index)\n      .forEach((key) => {\n        switch (key) {\n          case 'name':\n            if (typeof modifier.name !== 'string') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  String(modifier.name),\n                  '\"name\"',\n                  '\"string\"',\n                  `\"${String(modifier.name)}\"`\n                )\n              );\n            }\n            break;\n          case 'enabled':\n            if (typeof modifier.enabled !== 'boolean') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"enabled\"',\n                  '\"boolean\"',\n                  `\"${String(modifier.enabled)}\"`\n                )\n              );\n            }\n            break;\n          case 'phase':\n            if (modifierPhases.indexOf(modifier.phase) < 0) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"phase\"',\n                  `either ${modifierPhases.join(', ')}`,\n                  `\"${String(modifier.phase)}\"`\n                )\n              );\n            }\n            break;\n          case 'fn':\n            if (typeof modifier.fn !== 'function') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"fn\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'effect':\n            if (\n              modifier.effect != null &&\n              typeof modifier.effect !== 'function'\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"effect\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'requires':\n            if (\n              modifier.requires != null &&\n              !Array.isArray(modifier.requires)\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requires\"',\n                  '\"array\"',\n                  `\"${String(modifier.requires)}\"`\n                )\n              );\n            }\n            break;\n          case 'requiresIfExists':\n            if (!Array.isArray(modifier.requiresIfExists)) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requiresIfExists\"',\n                  '\"array\"',\n                  `\"${String(modifier.requiresIfExists)}\"`\n                )\n              );\n            }\n            break;\n          case 'options':\n          case 'data':\n            break;\n          default:\n            console.error(\n              `PopperJS: an invalid property has been provided to the \"${\n                modifier.name\n              }\" modifier, valid properties are ${VALID_PROPERTIES.map(\n                (s) => `\"${s}\"`\n              ).join(', ')}; but \"${key}\" was provided.`\n            );\n        }\n\n        modifier.requires &&\n          modifier.requires.forEach((requirement) => {\n            if (modifiers.find((mod) => mod.name === requirement) == null) {\n              console.error(\n                format(\n                  MISSING_DEPENDENCY_ERROR,\n                  String(modifier.name),\n                  requirement,\n                  requirement\n                )\n              );\n            }\n          });\n      });\n  });\n}\n","// @flow\n\nexport default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {\n  const identifiers = new Set();\n\n  return arr.filter(item => {\n    const identifier = fn(item);\n\n    if (!identifiers.has(identifier)) {\n      identifiers.add(identifier);\n      return true;\n    }\n  });\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 'height' : 'width';\n\n    switch (variation) {\n      case start:\n        offsets[mainAxis] =\n          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n        break;\n      case end:\n        offsets[mainAxis] =\n          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n        break;\n      default:\n    }\n  }\n\n  return offsets;\n}\n","// @flow\nimport type { SideObject } from '../types';\n\nexport default function getFreshSideObject(): SideObject {\n  return {\n    top: 0,\n    right: 0,\n    bottom: 0,\n    left: 0,\n  };\n}\n","// @flow\nimport type { SideObject } from '../types';\nimport getFreshSideObject from './getFreshSideObject';\n\nexport default function mergePaddingObject(\n  paddingObject: $Shape<SideObject>\n): SideObject {\n  return {\n    ...getFreshSideObject(),\n    ...paddingObject,\n  };\n}\n","// @flow\n\nexport default function expandToHashMap<\n  T: number | string | boolean,\n  K: string\n>(value: T, keys: Array<K>): { [key: string]: T } {\n  return keys.reduce((hashMap, key) => {\n    hashMap[key] = value;\n    return hashMap;\n  }, {});\n}\n","// @flow\nimport type { State, SideObject, Padding } from '../types';\nimport type { Placement, Boundary, RootBoundary, Context } from '../enums';\nimport getClippingRect from '../dom-utils/getClippingRect';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getBoundingClientRect from '../dom-utils/getBoundingClientRect';\nimport computeOffsets from './computeOffsets';\nimport rectToClientRect from './rectToClientRect';\nimport {\n  clippingParents,\n  reference,\n  popper,\n  bottom,\n  top,\n  right,\n  basePlacements,\n  viewport,\n} from '../enums';\nimport { isElement } from '../dom-utils/instanceOf';\nimport mergePaddingObject from './mergePaddingObject';\nimport expandToHashMap from './expandToHashMap';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  placement: Placement,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  elementContext: Context,\n  altBoundary: boolean,\n  padding: Padding,\n};\n\nexport default function detectOverflow(\n  state: State,\n  options: $Shape<Options> = {}\n): SideObject {\n  const {\n    placement = state.placement,\n    boundary = clippingParents,\n    rootBoundary = viewport,\n    elementContext = popper,\n    altBoundary = false,\n    padding = 0,\n  } = options;\n\n  const paddingObject = mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n\n  const altContext = elementContext === popper ? reference : popper;\n\n  const popperRect = state.rects.popper;\n  const element = state.elements[altBoundary ? altContext : elementContext];\n\n  const clippingClientRect = getClippingRect(\n    isElement(element)\n      ? element\n      : element.contextElement || getDocumentElement(state.elements.popper),\n    boundary,\n    rootBoundary\n  );\n\n  const referenceClientRect = getBoundingClientRect(state.elements.reference);\n\n  const popperOffsets = computeOffsets({\n    reference: referenceClientRect,\n    element: popperRect,\n    strategy: 'absolute',\n    placement,\n  });\n\n  const popperClientRect = rectToClientRect({\n    ...popperRect,\n    ...popperOffsets,\n  });\n\n  const elementClientRect =\n    elementContext === popper ? popperClientRect : referenceClientRect;\n\n  // positive = overflowing the clipping rect\n  // 0 or negative = within the clipping rect\n  const overflowOffsets = {\n    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n    bottom:\n      elementClientRect.bottom -\n      clippingClientRect.bottom +\n      paddingObject.bottom,\n    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n    right:\n      elementClientRect.right - clippingClientRect.right + paddingObject.right,\n  };\n\n  const offsetData = state.modifiersData.offset;\n\n  // Offsets can be applied only to the popper element\n  if (elementContext === popper && offsetData) {\n    const offset = offsetData[placement];\n\n    Object.keys(overflowOffsets).forEach((key) => {\n      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow 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\ No newline at end of file
diff --git a/popperjs/package/dist/cjs/popper-lite.js b/popperjs/package/dist/cjs/popper-lite.js
new file mode 100644
index 0000000..e45b18b
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper-lite.js
@@ -0,0 +1,1396 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+function getWindow(node) {
+  if (node == null) {
+    return window;
+  }
+
+  if (node.toString() !== '[object Window]') {
+    var ownerDocument = node.ownerDocument;
+    return ownerDocument ? ownerDocument.defaultView || window : window;
+  }
+
+  return node;
+}
+
+function isElement(node) {
+  var OwnElement = getWindow(node).Element;
+  return node instanceof OwnElement || node instanceof Element;
+}
+
+function isHTMLElement(node) {
+  var OwnElement = getWindow(node).HTMLElement;
+  return node instanceof OwnElement || node instanceof HTMLElement;
+}
+
+function isShadowRoot(node) {
+  // IE 11 has no ShadowRoot
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+
+  var OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+
+var max = Math.max;
+var min = Math.min;
+var round = Math.round;
+
+function getBoundingClientRect(element, includeScale) {
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+
+  var rect = element.getBoundingClientRect();
+  var scaleX = 1;
+  var scaleY = 1;
+
+  if (isHTMLElement(element) && includeScale) {
+    var offsetHeight = element.offsetHeight;
+    var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+    // Fallback to 1 in case both values are `0`
+
+    if (offsetWidth > 0) {
+      scaleX = round(rect.width) / offsetWidth || 1;
+    }
+
+    if (offsetHeight > 0) {
+      scaleY = round(rect.height) / offsetHeight || 1;
+    }
+  }
+
+  return {
+    width: rect.width / scaleX,
+    height: rect.height / scaleY,
+    top: rect.top / scaleY,
+    right: rect.right / scaleX,
+    bottom: rect.bottom / scaleY,
+    left: rect.left / scaleX,
+    x: rect.left / scaleX,
+    y: rect.top / scaleY
+  };
+}
+
+function getWindowScroll(node) {
+  var win = getWindow(node);
+  var scrollLeft = win.pageXOffset;
+  var scrollTop = win.pageYOffset;
+  return {
+    scrollLeft: scrollLeft,
+    scrollTop: scrollTop
+  };
+}
+
+function getHTMLElementScroll(element) {
+  return {
+    scrollLeft: element.scrollLeft,
+    scrollTop: element.scrollTop
+  };
+}
+
+function getNodeScroll(node) {
+  if (node === getWindow(node) || !isHTMLElement(node)) {
+    return getWindowScroll(node);
+  } else {
+    return getHTMLElementScroll(node);
+  }
+}
+
+function getNodeName(element) {
+  return element ? (element.nodeName || '').toLowerCase() : null;
+}
+
+function getDocumentElement(element) {
+  // $FlowFixMe[incompatible-return]: assume body is always available
+  return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+  element.document) || window.document).documentElement;
+}
+
+function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  // Popper 1 is broken in this case and never had a bug report so let's assume
+  // it's not an issue. I don't think anyone ever specifies width on <html>
+  // anyway.
+  // Browsers where the left scrollbar doesn't cause an issue report `0` for
+  // this (e.g. Edge 2019, IE11, Safari)
+  return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+}
+
+function getComputedStyle(element) {
+  return getWindow(element).getComputedStyle(element);
+}
+
+function isScrollParent(element) {
+  // Firefox wants us to check `-x` and `-y` variations as well
+  var _getComputedStyle = getComputedStyle(element),
+      overflow = _getComputedStyle.overflow,
+      overflowX = _getComputedStyle.overflowX,
+      overflowY = _getComputedStyle.overflowY;
+
+  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+}
+
+function isElementScaled(element) {
+  var rect = element.getBoundingClientRect();
+  var scaleX = round(rect.width) / element.offsetWidth || 1;
+  var scaleY = round(rect.height) / element.offsetHeight || 1;
+  return scaleX !== 1 || scaleY !== 1;
+} // Returns the composite rect of an element relative to its offsetParent.
+// Composite means it takes into account transforms as well as layout.
+
+
+function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+  if (isFixed === void 0) {
+    isFixed = false;
+  }
+
+  var isOffsetParentAnElement = isHTMLElement(offsetParent);
+  var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+  var documentElement = getDocumentElement(offsetParent);
+  var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+  var scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  var offsets = {
+    x: 0,
+    y: 0
+  };
+
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+    if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+    isScrollParent(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+
+    if (isHTMLElement(offsetParent)) {
+      offsets = getBoundingClientRect(offsetParent, true);
+      offsets.x += offsetParent.clientLeft;
+      offsets.y += offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
+
+// means it doesn't take into account transforms.
+
+function getLayoutRect(element) {
+  var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+  // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+  var width = element.offsetWidth;
+  var height = element.offsetHeight;
+
+  if (Math.abs(clientRect.width - width) <= 1) {
+    width = clientRect.width;
+  }
+
+  if (Math.abs(clientRect.height - height) <= 1) {
+    height = clientRect.height;
+  }
+
+  return {
+    x: element.offsetLeft,
+    y: element.offsetTop,
+    width: width,
+    height: height
+  };
+}
+
+function getParentNode(element) {
+  if (getNodeName(element) === 'html') {
+    return element;
+  }
+
+  return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+    // $FlowFixMe[incompatible-return]
+    // $FlowFixMe[prop-missing]
+    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+    element.parentNode || ( // DOM Element detected
+    isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+    // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+    getDocumentElement(element) // fallback
+
+  );
+}
+
+function getScrollParent(node) {
+  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return node.ownerDocument.body;
+  }
+
+  if (isHTMLElement(node) && isScrollParent(node)) {
+    return node;
+  }
+
+  return getScrollParent(getParentNode(node));
+}
+
+/*
+given a DOM element, return the list of all scroll parents, up the list of ancesors
+until we get to the top window object. This list is what we attach scroll listeners
+to, because if any of these parent elements scroll, we'll need to re-calculate the
+reference element's position.
+*/
+
+function listScrollParents(element, list) {
+  var _element$ownerDocumen;
+
+  if (list === void 0) {
+    list = [];
+  }
+
+  var scrollParent = getScrollParent(element);
+  var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+  var win = getWindow(scrollParent);
+  var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+  var updatedList = list.concat(target);
+  return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+  updatedList.concat(listScrollParents(getParentNode(target)));
+}
+
+function isTableElement(element) {
+  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+}
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+  getComputedStyle(element).position === 'fixed') {
+    return null;
+  }
+
+  return element.offsetParent;
+} // `.offsetParent` reports `null` for fixed elements, while absolute elements
+// return the containing block
+
+
+function getContainingBlock(element) {
+  var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+  var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+  if (isIE && isHTMLElement(element)) {
+    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+    var elementCss = getComputedStyle(element);
+
+    if (elementCss.position === 'fixed') {
+      return null;
+    }
+  }
+
+  var currentNode = getParentNode(element);
+
+  while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+    var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+    // create a containing block.
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+    if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+      return currentNode;
+    } else {
+      currentNode = currentNode.parentNode;
+    }
+  }
+
+  return null;
+} // Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+
+
+function getOffsetParent(element) {
+  var window = getWindow(element);
+  var offsetParent = getTrueOffsetParent(element);
+
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+    return window;
+  }
+
+  return offsetParent || getContainingBlock(element) || window;
+}
+
+var top = 'top';
+var bottom = 'bottom';
+var right = 'right';
+var left = 'left';
+var auto = 'auto';
+var basePlacements = [top, bottom, right, left];
+var start = 'start';
+var end = 'end';
+var clippingParents = 'clippingParents';
+var viewport = 'viewport';
+var popper = 'popper';
+var reference = 'reference';
+
+var beforeRead = 'beforeRead';
+var read = 'read';
+var afterRead = 'afterRead'; // pure-logic modifiers
+
+var beforeMain = 'beforeMain';
+var main = 'main';
+var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+var beforeWrite = 'beforeWrite';
+var write = 'write';
+var afterWrite = 'afterWrite';
+var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+function order(modifiers) {
+  var map = new Map();
+  var visited = new Set();
+  var result = [];
+  modifiers.forEach(function (modifier) {
+    map.set(modifier.name, modifier);
+  }); // On visiting object, check for its dependencies and visit them recursively
+
+  function sort(modifier) {
+    visited.add(modifier.name);
+    var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+    requires.forEach(function (dep) {
+      if (!visited.has(dep)) {
+        var depModifier = map.get(dep);
+
+        if (depModifier) {
+          sort(depModifier);
+        }
+      }
+    });
+    result.push(modifier);
+  }
+
+  modifiers.forEach(function (modifier) {
+    if (!visited.has(modifier.name)) {
+      // check for visited object
+      sort(modifier);
+    }
+  });
+  return result;
+}
+
+function orderModifiers(modifiers) {
+  // order based on dependencies
+  var orderedModifiers = order(modifiers); // order based on phase
+
+  return modifierPhases.reduce(function (acc, phase) {
+    return acc.concat(orderedModifiers.filter(function (modifier) {
+      return modifier.phase === phase;
+    }));
+  }, []);
+}
+
+function debounce(fn) {
+  var pending;
+  return function () {
+    if (!pending) {
+      pending = new Promise(function (resolve) {
+        Promise.resolve().then(function () {
+          pending = undefined;
+          resolve(fn());
+        });
+      });
+    }
+
+    return pending;
+  };
+}
+
+function format(str) {
+  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    args[_key - 1] = arguments[_key];
+  }
+
+  return [].concat(args).reduce(function (p, c) {
+    return p.replace(/%s/, c);
+  }, str);
+}
+
+var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+function validateModifiers(modifiers) {
+  modifiers.forEach(function (modifier) {
+    [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+    .filter(function (value, index, self) {
+      return self.indexOf(value) === index;
+    }).forEach(function (key) {
+      switch (key) {
+        case 'name':
+          if (typeof modifier.name !== 'string') {
+            console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+          }
+
+          break;
+
+        case 'enabled':
+          if (typeof modifier.enabled !== 'boolean') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+          }
+
+          break;
+
+        case 'phase':
+          if (modifierPhases.indexOf(modifier.phase) < 0) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+          }
+
+          break;
+
+        case 'fn':
+          if (typeof modifier.fn !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'effect':
+          if (modifier.effect != null && typeof modifier.effect !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'requires':
+          if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+          }
+
+          break;
+
+        case 'requiresIfExists':
+          if (!Array.isArray(modifier.requiresIfExists)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+          }
+
+          break;
+
+        case 'options':
+        case 'data':
+          break;
+
+        default:
+          console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+            return "\"" + s + "\"";
+          }).join(', ') + "; but \"" + key + "\" was provided.");
+      }
+
+      modifier.requires && modifier.requires.forEach(function (requirement) {
+        if (modifiers.find(function (mod) {
+          return mod.name === requirement;
+        }) == null) {
+          console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+        }
+      });
+    });
+  });
+}
+
+function uniqueBy(arr, fn) {
+  var identifiers = new Set();
+  return arr.filter(function (item) {
+    var identifier = fn(item);
+
+    if (!identifiers.has(identifier)) {
+      identifiers.add(identifier);
+      return true;
+    }
+  });
+}
+
+function getBasePlacement(placement) {
+  return placement.split('-')[0];
+}
+
+function mergeByName(modifiers) {
+  var merged = modifiers.reduce(function (merged, current) {
+    var existing = merged[current.name];
+    merged[current.name] = existing ? Object.assign({}, existing, current, {
+      options: Object.assign({}, existing.options, current.options),
+      data: Object.assign({}, existing.data, current.data)
+    }) : current;
+    return merged;
+  }, {}); // IE11 does not support Object.values
+
+  return Object.keys(merged).map(function (key) {
+    return merged[key];
+  });
+}
+
+function getViewportRect(element) {
+  var win = getWindow(element);
+  var html = getDocumentElement(element);
+  var visualViewport = win.visualViewport;
+  var width = html.clientWidth;
+  var height = html.clientHeight;
+  var x = 0;
+  var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+  // can be obscured underneath it.
+  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+  // if it isn't open, so if this isn't available, the popper will be detected
+  // to overflow the bottom of the screen too early.
+
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+    // errors due to floating point numbers, so we need to check precision.
+    // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+    // Feature detection fails in mobile emulation mode in Chrome.
+    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+    // 0.001
+    // Fallback here: "Not Safari" userAgent
+
+    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x + getWindowScrollBarX(element),
+    y: y
+  };
+}
+
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+function getDocumentRect(element) {
+  var _element$ownerDocumen;
+
+  var html = getDocumentElement(element);
+  var winScroll = getWindowScroll(element);
+  var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+  var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+  var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+  var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+  var y = -winScroll.scrollTop;
+
+  if (getComputedStyle(body || html).direction === 'rtl') {
+    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x,
+    y: y
+  };
+}
+
+function contains(parent, child) {
+  var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+  if (parent.contains(child)) {
+    return true;
+  } // then fallback to custom implementation with Shadow DOM support
+  else if (rootNode && isShadowRoot(rootNode)) {
+      var next = child;
+
+      do {
+        if (next && parent.isSameNode(next)) {
+          return true;
+        } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+        next = next.parentNode || next.host;
+      } while (next);
+    } // Give up, the result is false
+
+
+  return false;
+}
+
+function rectToClientRect(rect) {
+  return Object.assign({}, rect, {
+    left: rect.x,
+    top: rect.y,
+    right: rect.x + rect.width,
+    bottom: rect.y + rect.height
+  });
+}
+
+function getInnerBoundingClientRect(element) {
+  var rect = getBoundingClientRect(element);
+  rect.top = rect.top + element.clientTop;
+  rect.left = rect.left + element.clientLeft;
+  rect.bottom = rect.top + element.clientHeight;
+  rect.right = rect.left + element.clientWidth;
+  rect.width = element.clientWidth;
+  rect.height = element.clientHeight;
+  rect.x = rect.left;
+  rect.y = rect.top;
+  return rect;
+}
+
+function getClientRectFromMixedType(element, clippingParent) {
+  return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+} // A "clipping parent" is an overflowable container with the characteristic of
+// clipping (or hiding) overflowing elements with a position different from
+// `initial`
+
+
+function getClippingParents(element) {
+  var clippingParents = listScrollParents(getParentNode(element));
+  var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+  var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+  if (!isElement(clipperElement)) {
+    return [];
+  } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+  return clippingParents.filter(function (clippingParent) {
+    return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+  });
+} // Gets the maximum area that the element is visible in due to any number of
+// clipping parents
+
+
+function getClippingRect(element, boundary, rootBoundary) {
+  var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+  var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+  var firstClippingParent = clippingParents[0];
+  var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+    var rect = getClientRectFromMixedType(element, clippingParent);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromMixedType(element, firstClippingParent));
+  clippingRect.width = clippingRect.right - clippingRect.left;
+  clippingRect.height = clippingRect.bottom - clippingRect.top;
+  clippingRect.x = clippingRect.left;
+  clippingRect.y = clippingRect.top;
+  return clippingRect;
+}
+
+function getVariation(placement) {
+  return placement.split('-')[1];
+}
+
+function getMainAxisFromPlacement(placement) {
+  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+}
+
+function computeOffsets(_ref) {
+  var reference = _ref.reference,
+      element = _ref.element,
+      placement = _ref.placement;
+  var basePlacement = placement ? getBasePlacement(placement) : null;
+  var variation = placement ? getVariation(placement) : null;
+  var commonX = reference.x + reference.width / 2 - element.width / 2;
+  var commonY = reference.y + reference.height / 2 - element.height / 2;
+  var offsets;
+
+  switch (basePlacement) {
+    case top:
+      offsets = {
+        x: commonX,
+        y: reference.y - element.height
+      };
+      break;
+
+    case bottom:
+      offsets = {
+        x: commonX,
+        y: reference.y + reference.height
+      };
+      break;
+
+    case right:
+      offsets = {
+        x: reference.x + reference.width,
+        y: commonY
+      };
+      break;
+
+    case left:
+      offsets = {
+        x: reference.x - element.width,
+        y: commonY
+      };
+      break;
+
+    default:
+      offsets = {
+        x: reference.x,
+        y: reference.y
+      };
+  }
+
+  var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+  if (mainAxis != null) {
+    var len = mainAxis === 'y' ? 'height' : 'width';
+
+    switch (variation) {
+      case start:
+        offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+        break;
+
+      case end:
+        offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+        break;
+    }
+  }
+
+  return offsets;
+}
+
+function getFreshSideObject() {
+  return {
+    top: 0,
+    right: 0,
+    bottom: 0,
+    left: 0
+  };
+}
+
+function mergePaddingObject(paddingObject) {
+  return Object.assign({}, getFreshSideObject(), paddingObject);
+}
+
+function expandToHashMap(value, keys) {
+  return keys.reduce(function (hashMap, key) {
+    hashMap[key] = value;
+    return hashMap;
+  }, {});
+}
+
+function detectOverflow(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      _options$placement = _options.placement,
+      placement = _options$placement === void 0 ? state.placement : _options$placement,
+      _options$boundary = _options.boundary,
+      boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+      _options$rootBoundary = _options.rootBoundary,
+      rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+      _options$elementConte = _options.elementContext,
+      elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+      _options$altBoundary = _options.altBoundary,
+      altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+      _options$padding = _options.padding,
+      padding = _options$padding === void 0 ? 0 : _options$padding;
+  var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+  var altContext = elementContext === popper ? reference : popper;
+  var popperRect = state.rects.popper;
+  var element = state.elements[altBoundary ? altContext : elementContext];
+  var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+  var referenceClientRect = getBoundingClientRect(state.elements.reference);
+  var popperOffsets = computeOffsets({
+    reference: referenceClientRect,
+    element: popperRect,
+    strategy: 'absolute',
+    placement: placement
+  });
+  var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+  var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+  // 0 or negative = within the clipping rect
+
+  var overflowOffsets = {
+    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+    bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+    right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+  };
+  var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+  if (elementContext === popper && offsetData) {
+    var offset = offsetData[placement];
+    Object.keys(overflowOffsets).forEach(function (key) {
+      var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+      var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+      overflowOffsets[key] += offset[axis] * multiply;
+    });
+  }
+
+  return overflowOffsets;
+}
+
+var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+var DEFAULT_OPTIONS = {
+  placement: 'bottom',
+  modifiers: [],
+  strategy: 'absolute'
+};
+
+function areValidElements() {
+  for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+    args[_key] = arguments[_key];
+  }
+
+  return !args.some(function (element) {
+    return !(element && typeof element.getBoundingClientRect === 'function');
+  });
+}
+
+function popperGenerator(generatorOptions) {
+  if (generatorOptions === void 0) {
+    generatorOptions = {};
+  }
+
+  var _generatorOptions = generatorOptions,
+      _generatorOptions$def = _generatorOptions.defaultModifiers,
+      defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+      _generatorOptions$def2 = _generatorOptions.defaultOptions,
+      defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+  return function createPopper(reference, popper, options) {
+    if (options === void 0) {
+      options = defaultOptions;
+    }
+
+    var state = {
+      placement: 'bottom',
+      orderedModifiers: [],
+      options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+      modifiersData: {},
+      elements: {
+        reference: reference,
+        popper: popper
+      },
+      attributes: {},
+      styles: {}
+    };
+    var effectCleanupFns = [];
+    var isDestroyed = false;
+    var instance = {
+      state: state,
+      setOptions: function setOptions(setOptionsAction) {
+        var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+        cleanupModifierEffects();
+        state.options = Object.assign({}, defaultOptions, state.options, options);
+        state.scrollParents = {
+          reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+          popper: listScrollParents(popper)
+        }; // Orders the modifiers based on their dependencies and `phase`
+        // properties
+
+        var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+        state.orderedModifiers = orderedModifiers.filter(function (m) {
+          return m.enabled;
+        }); // Validate the provided modifiers so that the consumer will get warned
+        // if one of the modifiers is invalid for any reason
+
+        if (process.env.NODE_ENV !== "production") {
+          var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+            var name = _ref.name;
+            return name;
+          });
+          validateModifiers(modifiers);
+
+          if (getBasePlacement(state.options.placement) === auto) {
+            var flipModifier = state.orderedModifiers.find(function (_ref2) {
+              var name = _ref2.name;
+              return name === 'flip';
+            });
+
+            if (!flipModifier) {
+              console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+            }
+          }
+
+          var _getComputedStyle = getComputedStyle(popper),
+              marginTop = _getComputedStyle.marginTop,
+              marginRight = _getComputedStyle.marginRight,
+              marginBottom = _getComputedStyle.marginBottom,
+              marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+          // cause bugs with positioning, so we'll warn the consumer
+
+
+          if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+            return parseFloat(margin);
+          })) {
+            console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+          }
+        }
+
+        runModifierEffects();
+        return instance.update();
+      },
+      // Sync update – it will always be executed, even if not necessary. This
+      // is useful for low frequency updates where sync behavior simplifies the
+      // logic.
+      // For high frequency updates (e.g. `resize` and `scroll` events), always
+      // prefer the async Popper#update method
+      forceUpdate: function forceUpdate() {
+        if (isDestroyed) {
+          return;
+        }
+
+        var _state$elements = state.elements,
+            reference = _state$elements.reference,
+            popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+        // anymore
+
+        if (!areValidElements(reference, popper)) {
+          if (process.env.NODE_ENV !== "production") {
+            console.error(INVALID_ELEMENT_ERROR);
+          }
+
+          return;
+        } // Store the reference and popper rects to be read by modifiers
+
+
+        state.rects = {
+          reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+          popper: getLayoutRect(popper)
+        }; // Modifiers have the ability to reset the current update cycle. The
+        // most common use case for this is the `flip` modifier changing the
+        // placement, which then needs to re-run all the modifiers, because the
+        // logic was previously ran for the previous placement and is therefore
+        // stale/incorrect
+
+        state.reset = false;
+        state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+        // is filled with the initial data specified by the modifier. This means
+        // it doesn't persist and is fresh on each update.
+        // To ensure persistent data, use `${name}#persistent`
+
+        state.orderedModifiers.forEach(function (modifier) {
+          return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+        });
+        var __debug_loops__ = 0;
+
+        for (var index = 0; index < state.orderedModifiers.length; index++) {
+          if (process.env.NODE_ENV !== "production") {
+            __debug_loops__ += 1;
+
+            if (__debug_loops__ > 100) {
+              console.error(INFINITE_LOOP_ERROR);
+              break;
+            }
+          }
+
+          if (state.reset === true) {
+            state.reset = false;
+            index = -1;
+            continue;
+          }
+
+          var _state$orderedModifie = state.orderedModifiers[index],
+              fn = _state$orderedModifie.fn,
+              _state$orderedModifie2 = _state$orderedModifie.options,
+              _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+              name = _state$orderedModifie.name;
+
+          if (typeof fn === 'function') {
+            state = fn({
+              state: state,
+              options: _options,
+              name: name,
+              instance: instance
+            }) || state;
+          }
+        }
+      },
+      // Async and optimistically optimized update – it will not be executed if
+      // not necessary (debounced to run at most once-per-tick)
+      update: debounce(function () {
+        return new Promise(function (resolve) {
+          instance.forceUpdate();
+          resolve(state);
+        });
+      }),
+      destroy: function destroy() {
+        cleanupModifierEffects();
+        isDestroyed = true;
+      }
+    };
+
+    if (!areValidElements(reference, popper)) {
+      if (process.env.NODE_ENV !== "production") {
+        console.error(INVALID_ELEMENT_ERROR);
+      }
+
+      return instance;
+    }
+
+    instance.setOptions(options).then(function (state) {
+      if (!isDestroyed && options.onFirstUpdate) {
+        options.onFirstUpdate(state);
+      }
+    }); // Modifiers have the ability to execute arbitrary code before the first
+    // update cycle runs. They will be executed in the same order as the update
+    // cycle. This is useful when a modifier adds some persistent data that
+    // other modifiers need to use, but the modifier is run after the dependent
+    // one.
+
+    function runModifierEffects() {
+      state.orderedModifiers.forEach(function (_ref3) {
+        var name = _ref3.name,
+            _ref3$options = _ref3.options,
+            options = _ref3$options === void 0 ? {} : _ref3$options,
+            effect = _ref3.effect;
+
+        if (typeof effect === 'function') {
+          var cleanupFn = effect({
+            state: state,
+            name: name,
+            instance: instance,
+            options: options
+          });
+
+          var noopFn = function noopFn() {};
+
+          effectCleanupFns.push(cleanupFn || noopFn);
+        }
+      });
+    }
+
+    function cleanupModifierEffects() {
+      effectCleanupFns.forEach(function (fn) {
+        return fn();
+      });
+      effectCleanupFns = [];
+    }
+
+    return instance;
+  };
+}
+
+var passive = {
+  passive: true
+};
+
+function effect$1(_ref) {
+  var state = _ref.state,
+      instance = _ref.instance,
+      options = _ref.options;
+  var _options$scroll = options.scroll,
+      scroll = _options$scroll === void 0 ? true : _options$scroll,
+      _options$resize = options.resize,
+      resize = _options$resize === void 0 ? true : _options$resize;
+  var window = getWindow(state.elements.popper);
+  var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);
+
+  if (scroll) {
+    scrollParents.forEach(function (scrollParent) {
+      scrollParent.addEventListener('scroll', instance.update, passive);
+    });
+  }
+
+  if (resize) {
+    window.addEventListener('resize', instance.update, passive);
+  }
+
+  return function () {
+    if (scroll) {
+      scrollParents.forEach(function (scrollParent) {
+        scrollParent.removeEventListener('scroll', instance.update, passive);
+      });
+    }
+
+    if (resize) {
+      window.removeEventListener('resize', instance.update, passive);
+    }
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var eventListeners = {
+  name: 'eventListeners',
+  enabled: true,
+  phase: 'write',
+  fn: function fn() {},
+  effect: effect$1,
+  data: {}
+};
+
+function popperOffsets(_ref) {
+  var state = _ref.state,
+      name = _ref.name;
+  // Offsets are the actual position the popper needs to have to be
+  // properly positioned near its reference element
+  // This is the most basic placement, and will be adjusted by
+  // the modifiers in the next step
+  state.modifiersData[name] = computeOffsets({
+    reference: state.rects.reference,
+    element: state.rects.popper,
+    strategy: 'absolute',
+    placement: state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var popperOffsets$1 = {
+  name: 'popperOffsets',
+  enabled: true,
+  phase: 'read',
+  fn: popperOffsets,
+  data: {}
+};
+
+var unsetSides = {
+  top: 'auto',
+  right: 'auto',
+  bottom: 'auto',
+  left: 'auto'
+}; // Round the offsets to the nearest suitable subpixel based on the DPR.
+// Zooming can change the DPR, but it seems to report a value that will
+// cleanly divide the values into the appropriate subpixels.
+
+function roundOffsetsByDPR(_ref) {
+  var x = _ref.x,
+      y = _ref.y;
+  var win = window;
+  var dpr = win.devicePixelRatio || 1;
+  return {
+    x: round(x * dpr) / dpr || 0,
+    y: round(y * dpr) / dpr || 0
+  };
+}
+
+function mapToStyles(_ref2) {
+  var _Object$assign2;
+
+  var popper = _ref2.popper,
+      popperRect = _ref2.popperRect,
+      placement = _ref2.placement,
+      variation = _ref2.variation,
+      offsets = _ref2.offsets,
+      position = _ref2.position,
+      gpuAcceleration = _ref2.gpuAcceleration,
+      adaptive = _ref2.adaptive,
+      roundOffsets = _ref2.roundOffsets,
+      isFixed = _ref2.isFixed;
+
+  var _ref3 = roundOffsets === true ? roundOffsetsByDPR(offsets) : typeof roundOffsets === 'function' ? roundOffsets(offsets) : offsets,
+      _ref3$x = _ref3.x,
+      x = _ref3$x === void 0 ? 0 : _ref3$x,
+      _ref3$y = _ref3.y,
+      y = _ref3$y === void 0 ? 0 : _ref3$y;
+
+  var hasX = offsets.hasOwnProperty('x');
+  var hasY = offsets.hasOwnProperty('y');
+  var sideX = left;
+  var sideY = top;
+  var win = window;
+
+  if (adaptive) {
+    var offsetParent = getOffsetParent(popper);
+    var heightProp = 'clientHeight';
+    var widthProp = 'clientWidth';
+
+    if (offsetParent === getWindow(popper)) {
+      offsetParent = getDocumentElement(popper);
+
+      if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {
+        heightProp = 'scrollHeight';
+        widthProp = 'scrollWidth';
+      }
+    } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+
+
+    offsetParent = offsetParent;
+
+    if (placement === top || (placement === left || placement === right) && variation === end) {
+      sideY = bottom;
+      var offsetY = isFixed && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]
+      offsetParent[heightProp];
+      y -= offsetY - popperRect.height;
+      y *= gpuAcceleration ? 1 : -1;
+    }
+
+    if (placement === left || (placement === top || placement === bottom) && variation === end) {
+      sideX = right;
+      var offsetX = isFixed && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
+      offsetParent[widthProp];
+      x -= offsetX - popperRect.width;
+      x *= gpuAcceleration ? 1 : -1;
+    }
+  }
+
+  var commonStyles = Object.assign({
+    position: position
+  }, adaptive && unsetSides);
+
+  if (gpuAcceleration) {
+    var _Object$assign;
+
+    return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
+  }
+
+  return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
+}
+
+function computeStyles(_ref4) {
+  var state = _ref4.state,
+      options = _ref4.options;
+  var _options$gpuAccelerat = options.gpuAcceleration,
+      gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
+      _options$adaptive = options.adaptive,
+      adaptive = _options$adaptive === void 0 ? true : _options$adaptive,
+      _options$roundOffsets = options.roundOffsets,
+      roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;
+
+  if (process.env.NODE_ENV !== "production") {
+    var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
+
+    if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
+      return transitionProperty.indexOf(property) >= 0;
+    })) {
+      console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
+    }
+  }
+
+  var commonStyles = {
+    placement: getBasePlacement(state.placement),
+    variation: getVariation(state.placement),
+    popper: state.elements.popper,
+    popperRect: state.rects.popper,
+    gpuAcceleration: gpuAcceleration,
+    isFixed: state.options.strategy === 'fixed'
+  };
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.popperOffsets,
+      position: state.options.strategy,
+      adaptive: adaptive,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  if (state.modifiersData.arrow != null) {
+    state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.arrow,
+      position: 'absolute',
+      adaptive: false,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  state.attributes.popper = Object.assign({}, state.attributes.popper, {
+    'data-popper-placement': state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var computeStyles$1 = {
+  name: 'computeStyles',
+  enabled: true,
+  phase: 'beforeWrite',
+  fn: computeStyles,
+  data: {}
+};
+
+// and applies them to the HTMLElements such as popper and arrow
+
+function applyStyles(_ref) {
+  var state = _ref.state;
+  Object.keys(state.elements).forEach(function (name) {
+    var style = state.styles[name] || {};
+    var attributes = state.attributes[name] || {};
+    var element = state.elements[name]; // arrow is optional + virtual elements
+
+    if (!isHTMLElement(element) || !getNodeName(element)) {
+      return;
+    } // Flow doesn't support to extend this property, but it's the most
+    // effective way to apply styles to an HTMLElement
+    // $FlowFixMe[cannot-write]
+
+
+    Object.assign(element.style, style);
+    Object.keys(attributes).forEach(function (name) {
+      var value = attributes[name];
+
+      if (value === false) {
+        element.removeAttribute(name);
+      } else {
+        element.setAttribute(name, value === true ? '' : value);
+      }
+    });
+  });
+}
+
+function effect(_ref2) {
+  var state = _ref2.state;
+  var initialStyles = {
+    popper: {
+      position: state.options.strategy,
+      left: '0',
+      top: '0',
+      margin: '0'
+    },
+    arrow: {
+      position: 'absolute'
+    },
+    reference: {}
+  };
+  Object.assign(state.elements.popper.style, initialStyles.popper);
+  state.styles = initialStyles;
+
+  if (state.elements.arrow) {
+    Object.assign(state.elements.arrow.style, initialStyles.arrow);
+  }
+
+  return function () {
+    Object.keys(state.elements).forEach(function (name) {
+      var element = state.elements[name];
+      var attributes = state.attributes[name] || {};
+      var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them
+
+      var style = styleProperties.reduce(function (style, property) {
+        style[property] = '';
+        return style;
+      }, {}); // arrow is optional + virtual elements
+
+      if (!isHTMLElement(element) || !getNodeName(element)) {
+        return;
+      }
+
+      Object.assign(element.style, style);
+      Object.keys(attributes).forEach(function (attribute) {
+        element.removeAttribute(attribute);
+      });
+    });
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var applyStyles$1 = {
+  name: 'applyStyles',
+  enabled: true,
+  phase: 'write',
+  fn: applyStyles,
+  effect: effect,
+  requires: ['computeStyles']
+};
+
+var defaultModifiers = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1];
+var createPopper = /*#__PURE__*/popperGenerator({
+  defaultModifiers: defaultModifiers
+}); // eslint-disable-next-line import/no-unused-modules
+
+exports.createPopper = createPopper;
+exports.defaultModifiers = defaultModifiers;
+exports.detectOverflow = detectOverflow;
+exports.popperGenerator = popperGenerator;
+//# sourceMappingURL=popper-lite.js.map
diff --git a/popperjs/package/dist/cjs/popper-lite.js.flow b/popperjs/package/dist/cjs/popper-lite.js.flow
new file mode 100644
index 0000000..8658c44
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper-lite.js.flow
@@ -0,0 +1,3 @@
+// @flow
+
+export * from '../../lib/popper-lite.js'
diff --git a/popperjs/package/dist/cjs/popper-lite.js.map b/popperjs/package/dist/cjs/popper-lite.js.map
new file mode 100644
index 0000000..c47e4ad
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper-lite.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-lite.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/utils/math.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/isTableElement.js","../../src/dom-utils/getOffsetParent.js","../../src/enums.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/format.js","../../src/utils/validateModifiers.js","../../src/utils/uniqueBy.js","../../src/utils/getBasePlacement.js","../../src/utils/mergeByName.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/utils/computeOffsets.js","../../src/utils/getFreshSideObject.js","../../src/utils/mergePaddingObject.js","../../src/utils/expandToHashMap.js","../../src/utils/detectOverflow.js","../../src/createPopper.js","../../src/modifiers/eventListeners.js","../../src/modifiers/popperOffsets.js","../../src/modifiers/computeStyles.js","../../src/modifiers/applyStyles.js","../../src/popper-lite.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\n\nexport default function format(str: string, ...args: Array<string>) {\n  return [...args].reduce((p, c) => p.replace(/%s/, c), str);\n}\n","// @flow\nimport format from './format';\nimport { modifierPhases } from '../enums';\n\nconst INVALID_MODIFIER_ERROR =\n  'Popper: modifier \"%s\" provided an invalid %s property, expected %s but got %s';\nconst MISSING_DEPENDENCY_ERROR =\n  'Popper: modifier \"%s\" requires \"%s\", but \"%s\" modifier is not available';\nconst VALID_PROPERTIES = [\n  'name',\n  'enabled',\n  'phase',\n  'fn',\n  'effect',\n  'requires',\n  'options',\n];\n\nexport default function validateModifiers(modifiers: Array<any>): void {\n  modifiers.forEach((modifier) => {\n    [...Object.keys(modifier), ...VALID_PROPERTIES]\n      // IE11-compatible replacement for `new Set(iterable)`\n      .filter((value, index, self) => self.indexOf(value) === index)\n      .forEach((key) => {\n        switch (key) {\n          case 'name':\n            if (typeof modifier.name !== 'string') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  String(modifier.name),\n                  '\"name\"',\n                  '\"string\"',\n                  `\"${String(modifier.name)}\"`\n                )\n              );\n            }\n            break;\n          case 'enabled':\n            if (typeof modifier.enabled !== 'boolean') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"enabled\"',\n                  '\"boolean\"',\n                  `\"${String(modifier.enabled)}\"`\n                )\n              );\n            }\n            break;\n          case 'phase':\n            if (modifierPhases.indexOf(modifier.phase) < 0) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"phase\"',\n                  `either ${modifierPhases.join(', ')}`,\n                  `\"${String(modifier.phase)}\"`\n                )\n              );\n            }\n            break;\n          case 'fn':\n            if (typeof modifier.fn !== 'function') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"fn\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'effect':\n            if (\n              modifier.effect != null &&\n              typeof modifier.effect !== 'function'\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"effect\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'requires':\n            if (\n              modifier.requires != null &&\n              !Array.isArray(modifier.requires)\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requires\"',\n                  '\"array\"',\n                  `\"${String(modifier.requires)}\"`\n                )\n              );\n            }\n            break;\n          case 'requiresIfExists':\n            if (!Array.isArray(modifier.requiresIfExists)) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requiresIfExists\"',\n                  '\"array\"',\n                  `\"${String(modifier.requiresIfExists)}\"`\n                )\n              );\n            }\n            break;\n          case 'options':\n          case 'data':\n            break;\n          default:\n            console.error(\n              `PopperJS: an invalid property has been provided to the \"${\n                modifier.name\n              }\" modifier, valid properties are ${VALID_PROPERTIES.map(\n                (s) => `\"${s}\"`\n              ).join(', ')}; but \"${key}\" was provided.`\n            );\n        }\n\n        modifier.requires &&\n          modifier.requires.forEach((requirement) => {\n            if (modifiers.find((mod) => mod.name === requirement) == null) {\n              console.error(\n                format(\n                  MISSING_DEPENDENCY_ERROR,\n                  String(modifier.name),\n                  requirement,\n                  requirement\n                )\n              );\n            }\n          });\n      });\n  });\n}\n","// @flow\n\nexport default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {\n  const identifiers = new Set();\n\n  return arr.filter(item => {\n    const identifier = fn(item);\n\n    if (!identifiers.has(identifier)) {\n      identifiers.add(identifier);\n      return true;\n    }\n  });\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 'height' : 'width';\n\n    switch (variation) {\n      case start:\n        offsets[mainAxis] =\n          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n        break;\n      case end:\n        offsets[mainAxis] =\n          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n        break;\n      default:\n    }\n  }\n\n  return offsets;\n}\n","// @flow\nimport type { SideObject } from '../types';\n\nexport default function getFreshSideObject(): SideObject {\n  return {\n    top: 0,\n    right: 0,\n    bottom: 0,\n    left: 0,\n  };\n}\n","// @flow\nimport type { SideObject } from '../types';\nimport getFreshSideObject from './getFreshSideObject';\n\nexport default function mergePaddingObject(\n  paddingObject: $Shape<SideObject>\n): SideObject {\n  return {\n    ...getFreshSideObject(),\n    ...paddingObject,\n  };\n}\n","// @flow\n\nexport default function expandToHashMap<\n  T: number | string | boolean,\n  K: string\n>(value: T, keys: Array<K>): { [key: string]: T } {\n  return keys.reduce((hashMap, key) => {\n    hashMap[key] = value;\n    return hashMap;\n  }, {});\n}\n","// @flow\nimport type { State, SideObject, Padding } from '../types';\nimport type { Placement, Boundary, RootBoundary, Context } from '../enums';\nimport getClippingRect from '../dom-utils/getClippingRect';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getBoundingClientRect from '../dom-utils/getBoundingClientRect';\nimport computeOffsets from './computeOffsets';\nimport rectToClientRect from './rectToClientRect';\nimport {\n  clippingParents,\n  reference,\n  popper,\n  bottom,\n  top,\n  right,\n  basePlacements,\n  viewport,\n} from '../enums';\nimport { isElement } from '../dom-utils/instanceOf';\nimport mergePaddingObject from './mergePaddingObject';\nimport expandToHashMap from './expandToHashMap';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  placement: Placement,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  elementContext: Context,\n  altBoundary: boolean,\n  padding: Padding,\n};\n\nexport default function detectOverflow(\n  state: State,\n  options: $Shape<Options> = {}\n): SideObject {\n  const {\n    placement = state.placement,\n    boundary = clippingParents,\n    rootBoundary = viewport,\n    elementContext = popper,\n    altBoundary = false,\n    padding = 0,\n  } = options;\n\n  const paddingObject = mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n\n  const altContext = elementContext === popper ? reference : popper;\n\n  const popperRect = state.rects.popper;\n  const element = state.elements[altBoundary ? altContext : elementContext];\n\n  const clippingClientRect = getClippingRect(\n    isElement(element)\n      ? element\n      : element.contextElement || getDocumentElement(state.elements.popper),\n    boundary,\n    rootBoundary\n  );\n\n  const referenceClientRect = getBoundingClientRect(state.elements.reference);\n\n  const popperOffsets = computeOffsets({\n    reference: referenceClientRect,\n    element: popperRect,\n    strategy: 'absolute',\n    placement,\n  });\n\n  const popperClientRect = rectToClientRect({\n    ...popperRect,\n    ...popperOffsets,\n  });\n\n  const elementClientRect =\n    elementContext === popper ? popperClientRect : referenceClientRect;\n\n  // positive = overflowing the clipping rect\n  // 0 or negative = within the clipping rect\n  const overflowOffsets = {\n    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n    bottom:\n      elementClientRect.bottom -\n      clippingClientRect.bottom +\n      paddingObject.bottom,\n    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n    right:\n      elementClientRect.right - clippingClientRect.right + paddingObject.right,\n  };\n\n  const offsetData = state.modifiersData.offset;\n\n  // Offsets can be applied only to the popper element\n  if (elementContext === popper && offsetData) {\n    const offset = offsetData[placement];\n\n    Object.keys(overflowOffsets).forEach((key) => {\n      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow };\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport getWindow from '../dom-utils/getWindow';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  scroll: boolean,\n  resize: boolean,\n};\n\nconst passive = { passive: true };\n\nfunction effect({ state, instance, options }: ModifierArguments<Options>) {\n  const { scroll = true, resize = true } = options;\n\n  const window = getWindow(state.elements.popper);\n  const scrollParents = [\n    ...state.scrollParents.reference,\n    ...state.scrollParents.popper,\n  ];\n\n  if (scroll) {\n    scrollParents.forEach(scrollParent => {\n      scrollParent.addEventListener('scroll', instance.update, passive);\n    });\n  }\n\n  if (resize) {\n    window.addEventListener('resize', instance.update, passive);\n  }\n\n  return () => {\n    if (scroll) {\n      scrollParents.forEach(scrollParent => {\n        scrollParent.removeEventListener('scroll', instance.update, passive);\n      });\n    }\n\n    if (resize) {\n      window.removeEventListener('resize', instance.update, passive);\n    }\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type EventListenersModifier = Modifier<'eventListeners', Options>;\nexport default ({\n  name: 'eventListeners',\n  enabled: true,\n  phase: 'write',\n  fn: () => {},\n  effect,\n  data: {},\n}: EventListenersModifier);\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport computeOffsets from '../utils/computeOffsets';\n\nfunction popperOffsets({ state, name }: ModifierArguments<{||}>) {\n  // Offsets are the actual position the popper needs to have to be\n  // properly positioned near its reference element\n  // This is the most basic placement, and will be adjusted by\n  // the modifiers in the next step\n  state.modifiersData[name] = computeOffsets({\n    reference: state.rects.reference,\n    element: state.rects.popper,\n    strategy: 'absolute',\n    placement: state.placement,\n  });\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PopperOffsetsModifier = Modifier<'popperOffsets', {||}>;\nexport default ({\n  name: 'popperOffsets',\n  enabled: true,\n  phase: 'read',\n  fn: popperOffsets,\n  data: {},\n}: PopperOffsetsModifier);\n","// @flow\nimport type {\n  PositioningStrategy,\n  Offsets,\n  Modifier,\n  ModifierArguments,\n  Rect,\n  Window,\n} from '../types';\nimport {\n  type BasePlacement,\n  type Variation,\n  top,\n  left,\n  right,\n  bottom,\n  end,\n} from '../enums';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getWindow from '../dom-utils/getWindow';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getComputedStyle from '../dom-utils/getComputedStyle';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getVariation from '../utils/getVariation';\nimport { round } from '../utils/math';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type RoundOffsets = (\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>\n) => Offsets;\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets?: boolean | RoundOffsets,\n};\n\nconst unsetSides = {\n  top: 'auto',\n  right: 'auto',\n  bottom: 'auto',\n  left: 'auto',\n};\n\n// Round the offsets to the nearest suitable subpixel based on the DPR.\n// Zooming can change the DPR, but it seems to report a value that will\n// cleanly divide the values into the appropriate subpixels.\nfunction roundOffsetsByDPR({ x, y }): Offsets {\n  const win: Window = window;\n  const dpr = win.devicePixelRatio || 1;\n\n  return {\n    x: round(x * dpr) / dpr || 0,\n    y: round(y * dpr) / dpr || 0,\n  };\n}\n\nexport function mapToStyles({\n  popper,\n  popperRect,\n  placement,\n  variation,\n  offsets,\n  position,\n  gpuAcceleration,\n  adaptive,\n  roundOffsets,\n  isFixed,\n}: {\n  popper: HTMLElement,\n  popperRect: Rect,\n  placement: BasePlacement,\n  variation: ?Variation,\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>,\n  position: PositioningStrategy,\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets: boolean | RoundOffsets,\n  isFixed: boolean,\n}) {\n  let { x = 0, y = 0 } =\n    roundOffsets === true\n      ? roundOffsetsByDPR(offsets)\n      : typeof roundOffsets === 'function'\n      ? roundOffsets(offsets)\n      : offsets;\n\n  const hasX = offsets.hasOwnProperty('x');\n  const hasY = offsets.hasOwnProperty('y');\n\n  let sideX: string = left;\n  let sideY: string = top;\n\n  const win: Window = window;\n\n  if (adaptive) {\n    let offsetParent = getOffsetParent(popper);\n    let heightProp = 'clientHeight';\n    let widthProp = 'clientWidth';\n\n    if (offsetParent === getWindow(popper)) {\n      offsetParent = getDocumentElement(popper);\n\n      if (\n        getComputedStyle(offsetParent).position !== 'static' &&\n        position === 'absolute'\n      ) {\n        heightProp = 'scrollHeight';\n        widthProp = 'scrollWidth';\n      }\n    }\n\n    // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it\n    offsetParent = (offsetParent: Element);\n\n    if (\n      placement === top ||\n      ((placement === left || placement === right) && variation === end)\n    ) {\n      sideY = bottom;\n      const offsetY =\n        isFixed && win.visualViewport\n          ? win.visualViewport.height\n          : // $FlowFixMe[prop-missing]\n            offsetParent[heightProp];\n      y -= offsetY - popperRect.height;\n      y *= gpuAcceleration ? 1 : -1;\n    }\n\n    if (\n      placement === left ||\n      ((placement === top || placement === bottom) && variation === end)\n    ) {\n      sideX = right;\n      const offsetX =\n        isFixed && win.visualViewport\n          ? win.visualViewport.width\n          : // $FlowFixMe[prop-missing]\n            offsetParent[widthProp];\n      x -= offsetX - popperRect.width;\n      x *= gpuAcceleration ? 1 : -1;\n    }\n  }\n\n  const commonStyles = {\n    position,\n    ...(adaptive && unsetSides),\n  };\n\n  if (gpuAcceleration) {\n    return {\n      ...commonStyles,\n      [sideY]: hasY ? '0' : '',\n      [sideX]: hasX ? '0' : '',\n      // Layer acceleration can disable subpixel rendering which causes slightly\n      // blurry text on low PPI displays, so we want to use 2D transforms\n      // instead\n      transform:\n        (win.devicePixelRatio || 1) <= 1\n          ? `translate(${x}px, ${y}px)`\n          : `translate3d(${x}px, ${y}px, 0)`,\n    };\n  }\n\n  return {\n    ...commonStyles,\n    [sideY]: hasY ? `${y}px` : '',\n    [sideX]: hasX ? `${x}px` : '',\n    transform: '',\n  };\n}\n\nfunction computeStyles({ state, options }: ModifierArguments<Options>) {\n  const {\n    gpuAcceleration = true,\n    adaptive = true,\n    // defaults to use builtin `roundOffsetsByDPR`\n    roundOffsets = true,\n  } = options;\n\n  if (__DEV__) {\n    const transitionProperty =\n      getComputedStyle(state.elements.popper).transitionProperty || '';\n\n    if (\n      adaptive &&\n      ['transform', 'top', 'right', 'bottom', 'left'].some(\n        (property) => transitionProperty.indexOf(property) >= 0\n      )\n    ) {\n      console.warn(\n        [\n          'Popper: Detected CSS transitions on at least one of the following',\n          'CSS properties: \"transform\", \"top\", \"right\", \"bottom\", \"left\".',\n          '\\n\\n',\n          'Disable the \"computeStyles\" modifier\\'s `adaptive` option to allow',\n          'for smooth transitions, or remove these properties from the CSS',\n          'transition declaration on the popper element if only transitioning',\n          'opacity or background-color for example.',\n          '\\n\\n',\n          'We recommend using the popper element as a wrapper around an inner',\n          'element that can have any CSS property transitioned for animations.',\n        ].join(' ')\n      );\n    }\n  }\n\n  const commonStyles = {\n    placement: getBasePlacement(state.placement),\n    variation: getVariation(state.placement),\n    popper: state.elements.popper,\n    popperRect: state.rects.popper,\n    gpuAcceleration,\n    isFixed: state.options.strategy === 'fixed',\n  };\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.styles.popper = {\n      ...state.styles.popper,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.popperOffsets,\n        position: state.options.strategy,\n        adaptive,\n        roundOffsets,\n      }),\n    };\n  }\n\n  if (state.modifiersData.arrow != null) {\n    state.styles.arrow = {\n      ...state.styles.arrow,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.arrow,\n        position: 'absolute',\n        adaptive: false,\n        roundOffsets,\n      }),\n    };\n  }\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-placement': state.placement,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ComputeStylesModifier = Modifier<'computeStyles', Options>;\nexport default ({\n  name: 'computeStyles',\n  enabled: true,\n  phase: 'beforeWrite',\n  fn: computeStyles,\n  data: {},\n}: ComputeStylesModifier);\n","// @flow\nimport type { Modifier, ModifierArguments } from '../types';\nimport getNodeName from '../dom-utils/getNodeName';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// This modifier takes the styles prepared by the `computeStyles` modifier\n// and applies them to the HTMLElements such as popper and arrow\n\nfunction applyStyles({ state }: ModifierArguments<{||}>) {\n  Object.keys(state.elements).forEach((name) => {\n    const style = state.styles[name] || {};\n\n    const attributes = state.attributes[name] || {};\n    const element = state.elements[name];\n\n    // arrow is optional + virtual elements\n    if (!isHTMLElement(element) || !getNodeName(element)) {\n      return;\n    }\n\n    // Flow doesn't support to extend this property, but it's the most\n    // effective way to apply styles to an HTMLElement\n    // $FlowFixMe[cannot-write]\n    Object.assign(element.style, style);\n\n    Object.keys(attributes).forEach((name) => {\n      const value = attributes[name];\n      if (value === false) {\n        element.removeAttribute(name);\n      } else {\n        element.setAttribute(name, value === true ? '' : value);\n      }\n    });\n  });\n}\n\nfunction effect({ state }: ModifierArguments<{||}>) {\n  const initialStyles = {\n    popper: {\n      position: state.options.strategy,\n      left: '0',\n      top: '0',\n      margin: '0',\n    },\n    arrow: {\n      position: 'absolute',\n    },\n    reference: {},\n  };\n\n  Object.assign(state.elements.popper.style, initialStyles.popper);\n  state.styles = initialStyles;\n\n  if (state.elements.arrow) {\n    Object.assign(state.elements.arrow.style, initialStyles.arrow);\n  }\n\n  return () => {\n    Object.keys(state.elements).forEach((name) => {\n      const element = state.elements[name];\n      const attributes = state.attributes[name] || {};\n\n      const styleProperties = Object.keys(\n        state.styles.hasOwnProperty(name)\n          ? state.styles[name]\n          : initialStyles[name]\n      );\n\n      // Set all values to an empty string to unset them\n      const style = styleProperties.reduce((style, property) => {\n        style[property] = '';\n        return style;\n      }, {});\n\n      // arrow is optional + virtual elements\n      if (!isHTMLElement(element) || !getNodeName(element)) {\n        return;\n      }\n\n      Object.assign(element.style, style);\n\n      Object.keys(attributes).forEach((attribute) => {\n        element.removeAttribute(attribute);\n      });\n    });\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ApplyStylesModifier = Modifier<'applyStyles', {||}>;\nexport default ({\n  name: 'applyStyles',\n  enabled: true,\n  phase: 'write',\n  fn: applyStyles,\n  effect,\n  requires: ['computeStyles'],\n}: ApplyStylesModifier);\n","// @flow\nimport { popperGenerator, detectOverflow } from './createPopper';\n\nimport eventListeners from './modifiers/eventListeners';\nimport popperOffsets from './modifiers/popperOffsets';\nimport computeStyles from './modifiers/computeStyles';\nimport applyStyles from './modifiers/applyStyles';\n\nexport type * from 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\ No newline at end of file
diff --git a/popperjs/package/dist/cjs/popper.js b/popperjs/package/dist/cjs/popper.js
new file mode 100644
index 0000000..f19e81c
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper.js
@@ -0,0 +1,1968 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+'use strict';
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+function getWindow(node) {
+  if (node == null) {
+    return window;
+  }
+
+  if (node.toString() !== '[object Window]') {
+    var ownerDocument = node.ownerDocument;
+    return ownerDocument ? ownerDocument.defaultView || window : window;
+  }
+
+  return node;
+}
+
+function isElement(node) {
+  var OwnElement = getWindow(node).Element;
+  return node instanceof OwnElement || node instanceof Element;
+}
+
+function isHTMLElement(node) {
+  var OwnElement = getWindow(node).HTMLElement;
+  return node instanceof OwnElement || node instanceof HTMLElement;
+}
+
+function isShadowRoot(node) {
+  // IE 11 has no ShadowRoot
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+
+  var OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+
+var max = Math.max;
+var min = Math.min;
+var round = Math.round;
+
+function getBoundingClientRect(element, includeScale) {
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+
+  var rect = element.getBoundingClientRect();
+  var scaleX = 1;
+  var scaleY = 1;
+
+  if (isHTMLElement(element) && includeScale) {
+    var offsetHeight = element.offsetHeight;
+    var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+    // Fallback to 1 in case both values are `0`
+
+    if (offsetWidth > 0) {
+      scaleX = round(rect.width) / offsetWidth || 1;
+    }
+
+    if (offsetHeight > 0) {
+      scaleY = round(rect.height) / offsetHeight || 1;
+    }
+  }
+
+  return {
+    width: rect.width / scaleX,
+    height: rect.height / scaleY,
+    top: rect.top / scaleY,
+    right: rect.right / scaleX,
+    bottom: rect.bottom / scaleY,
+    left: rect.left / scaleX,
+    x: rect.left / scaleX,
+    y: rect.top / scaleY
+  };
+}
+
+function getWindowScroll(node) {
+  var win = getWindow(node);
+  var scrollLeft = win.pageXOffset;
+  var scrollTop = win.pageYOffset;
+  return {
+    scrollLeft: scrollLeft,
+    scrollTop: scrollTop
+  };
+}
+
+function getHTMLElementScroll(element) {
+  return {
+    scrollLeft: element.scrollLeft,
+    scrollTop: element.scrollTop
+  };
+}
+
+function getNodeScroll(node) {
+  if (node === getWindow(node) || !isHTMLElement(node)) {
+    return getWindowScroll(node);
+  } else {
+    return getHTMLElementScroll(node);
+  }
+}
+
+function getNodeName(element) {
+  return element ? (element.nodeName || '').toLowerCase() : null;
+}
+
+function getDocumentElement(element) {
+  // $FlowFixMe[incompatible-return]: assume body is always available
+  return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+  element.document) || window.document).documentElement;
+}
+
+function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  // Popper 1 is broken in this case and never had a bug report so let's assume
+  // it's not an issue. I don't think anyone ever specifies width on <html>
+  // anyway.
+  // Browsers where the left scrollbar doesn't cause an issue report `0` for
+  // this (e.g. Edge 2019, IE11, Safari)
+  return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+}
+
+function getComputedStyle(element) {
+  return getWindow(element).getComputedStyle(element);
+}
+
+function isScrollParent(element) {
+  // Firefox wants us to check `-x` and `-y` variations as well
+  var _getComputedStyle = getComputedStyle(element),
+      overflow = _getComputedStyle.overflow,
+      overflowX = _getComputedStyle.overflowX,
+      overflowY = _getComputedStyle.overflowY;
+
+  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+}
+
+function isElementScaled(element) {
+  var rect = element.getBoundingClientRect();
+  var scaleX = round(rect.width) / element.offsetWidth || 1;
+  var scaleY = round(rect.height) / element.offsetHeight || 1;
+  return scaleX !== 1 || scaleY !== 1;
+} // Returns the composite rect of an element relative to its offsetParent.
+// Composite means it takes into account transforms as well as layout.
+
+
+function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+  if (isFixed === void 0) {
+    isFixed = false;
+  }
+
+  var isOffsetParentAnElement = isHTMLElement(offsetParent);
+  var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+  var documentElement = getDocumentElement(offsetParent);
+  var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+  var scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  var offsets = {
+    x: 0,
+    y: 0
+  };
+
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+    if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+    isScrollParent(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+
+    if (isHTMLElement(offsetParent)) {
+      offsets = getBoundingClientRect(offsetParent, true);
+      offsets.x += offsetParent.clientLeft;
+      offsets.y += offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
+
+// means it doesn't take into account transforms.
+
+function getLayoutRect(element) {
+  var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+  // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+  var width = element.offsetWidth;
+  var height = element.offsetHeight;
+
+  if (Math.abs(clientRect.width - width) <= 1) {
+    width = clientRect.width;
+  }
+
+  if (Math.abs(clientRect.height - height) <= 1) {
+    height = clientRect.height;
+  }
+
+  return {
+    x: element.offsetLeft,
+    y: element.offsetTop,
+    width: width,
+    height: height
+  };
+}
+
+function getParentNode(element) {
+  if (getNodeName(element) === 'html') {
+    return element;
+  }
+
+  return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+    // $FlowFixMe[incompatible-return]
+    // $FlowFixMe[prop-missing]
+    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+    element.parentNode || ( // DOM Element detected
+    isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+    // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+    getDocumentElement(element) // fallback
+
+  );
+}
+
+function getScrollParent(node) {
+  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return node.ownerDocument.body;
+  }
+
+  if (isHTMLElement(node) && isScrollParent(node)) {
+    return node;
+  }
+
+  return getScrollParent(getParentNode(node));
+}
+
+/*
+given a DOM element, return the list of all scroll parents, up the list of ancesors
+until we get to the top window object. This list is what we attach scroll listeners
+to, because if any of these parent elements scroll, we'll need to re-calculate the
+reference element's position.
+*/
+
+function listScrollParents(element, list) {
+  var _element$ownerDocumen;
+
+  if (list === void 0) {
+    list = [];
+  }
+
+  var scrollParent = getScrollParent(element);
+  var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+  var win = getWindow(scrollParent);
+  var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+  var updatedList = list.concat(target);
+  return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+  updatedList.concat(listScrollParents(getParentNode(target)));
+}
+
+function isTableElement(element) {
+  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+}
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+  getComputedStyle(element).position === 'fixed') {
+    return null;
+  }
+
+  return element.offsetParent;
+} // `.offsetParent` reports `null` for fixed elements, while absolute elements
+// return the containing block
+
+
+function getContainingBlock(element) {
+  var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+  var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+  if (isIE && isHTMLElement(element)) {
+    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+    var elementCss = getComputedStyle(element);
+
+    if (elementCss.position === 'fixed') {
+      return null;
+    }
+  }
+
+  var currentNode = getParentNode(element);
+
+  while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+    var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+    // create a containing block.
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+    if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+      return currentNode;
+    } else {
+      currentNode = currentNode.parentNode;
+    }
+  }
+
+  return null;
+} // Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+
+
+function getOffsetParent(element) {
+  var window = getWindow(element);
+  var offsetParent = getTrueOffsetParent(element);
+
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+    return window;
+  }
+
+  return offsetParent || getContainingBlock(element) || window;
+}
+
+var top = 'top';
+var bottom = 'bottom';
+var right = 'right';
+var left = 'left';
+var auto = 'auto';
+var basePlacements = [top, bottom, right, left];
+var start = 'start';
+var end = 'end';
+var clippingParents = 'clippingParents';
+var viewport = 'viewport';
+var popper = 'popper';
+var reference = 'reference';
+var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
+  return acc.concat([placement + "-" + start, placement + "-" + end]);
+}, []);
+var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
+  return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
+}, []); // modifiers that need to read the DOM
+
+var beforeRead = 'beforeRead';
+var read = 'read';
+var afterRead = 'afterRead'; // pure-logic modifiers
+
+var beforeMain = 'beforeMain';
+var main = 'main';
+var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+var beforeWrite = 'beforeWrite';
+var write = 'write';
+var afterWrite = 'afterWrite';
+var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+function order(modifiers) {
+  var map = new Map();
+  var visited = new Set();
+  var result = [];
+  modifiers.forEach(function (modifier) {
+    map.set(modifier.name, modifier);
+  }); // On visiting object, check for its dependencies and visit them recursively
+
+  function sort(modifier) {
+    visited.add(modifier.name);
+    var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+    requires.forEach(function (dep) {
+      if (!visited.has(dep)) {
+        var depModifier = map.get(dep);
+
+        if (depModifier) {
+          sort(depModifier);
+        }
+      }
+    });
+    result.push(modifier);
+  }
+
+  modifiers.forEach(function (modifier) {
+    if (!visited.has(modifier.name)) {
+      // check for visited object
+      sort(modifier);
+    }
+  });
+  return result;
+}
+
+function orderModifiers(modifiers) {
+  // order based on dependencies
+  var orderedModifiers = order(modifiers); // order based on phase
+
+  return modifierPhases.reduce(function (acc, phase) {
+    return acc.concat(orderedModifiers.filter(function (modifier) {
+      return modifier.phase === phase;
+    }));
+  }, []);
+}
+
+function debounce(fn) {
+  var pending;
+  return function () {
+    if (!pending) {
+      pending = new Promise(function (resolve) {
+        Promise.resolve().then(function () {
+          pending = undefined;
+          resolve(fn());
+        });
+      });
+    }
+
+    return pending;
+  };
+}
+
+function format(str) {
+  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    args[_key - 1] = arguments[_key];
+  }
+
+  return [].concat(args).reduce(function (p, c) {
+    return p.replace(/%s/, c);
+  }, str);
+}
+
+var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+function validateModifiers(modifiers) {
+  modifiers.forEach(function (modifier) {
+    [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+    .filter(function (value, index, self) {
+      return self.indexOf(value) === index;
+    }).forEach(function (key) {
+      switch (key) {
+        case 'name':
+          if (typeof modifier.name !== 'string') {
+            console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+          }
+
+          break;
+
+        case 'enabled':
+          if (typeof modifier.enabled !== 'boolean') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+          }
+
+          break;
+
+        case 'phase':
+          if (modifierPhases.indexOf(modifier.phase) < 0) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+          }
+
+          break;
+
+        case 'fn':
+          if (typeof modifier.fn !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'effect':
+          if (modifier.effect != null && typeof modifier.effect !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'requires':
+          if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+          }
+
+          break;
+
+        case 'requiresIfExists':
+          if (!Array.isArray(modifier.requiresIfExists)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+          }
+
+          break;
+
+        case 'options':
+        case 'data':
+          break;
+
+        default:
+          console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+            return "\"" + s + "\"";
+          }).join(', ') + "; but \"" + key + "\" was provided.");
+      }
+
+      modifier.requires && modifier.requires.forEach(function (requirement) {
+        if (modifiers.find(function (mod) {
+          return mod.name === requirement;
+        }) == null) {
+          console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+        }
+      });
+    });
+  });
+}
+
+function uniqueBy(arr, fn) {
+  var identifiers = new Set();
+  return arr.filter(function (item) {
+    var identifier = fn(item);
+
+    if (!identifiers.has(identifier)) {
+      identifiers.add(identifier);
+      return true;
+    }
+  });
+}
+
+function getBasePlacement(placement) {
+  return placement.split('-')[0];
+}
+
+function mergeByName(modifiers) {
+  var merged = modifiers.reduce(function (merged, current) {
+    var existing = merged[current.name];
+    merged[current.name] = existing ? Object.assign({}, existing, current, {
+      options: Object.assign({}, existing.options, current.options),
+      data: Object.assign({}, existing.data, current.data)
+    }) : current;
+    return merged;
+  }, {}); // IE11 does not support Object.values
+
+  return Object.keys(merged).map(function (key) {
+    return merged[key];
+  });
+}
+
+function getViewportRect(element) {
+  var win = getWindow(element);
+  var html = getDocumentElement(element);
+  var visualViewport = win.visualViewport;
+  var width = html.clientWidth;
+  var height = html.clientHeight;
+  var x = 0;
+  var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+  // can be obscured underneath it.
+  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+  // if it isn't open, so if this isn't available, the popper will be detected
+  // to overflow the bottom of the screen too early.
+
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+    // errors due to floating point numbers, so we need to check precision.
+    // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+    // Feature detection fails in mobile emulation mode in Chrome.
+    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+    // 0.001
+    // Fallback here: "Not Safari" userAgent
+
+    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x + getWindowScrollBarX(element),
+    y: y
+  };
+}
+
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+function getDocumentRect(element) {
+  var _element$ownerDocumen;
+
+  var html = getDocumentElement(element);
+  var winScroll = getWindowScroll(element);
+  var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+  var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+  var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+  var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+  var y = -winScroll.scrollTop;
+
+  if (getComputedStyle(body || html).direction === 'rtl') {
+    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x,
+    y: y
+  };
+}
+
+function contains(parent, child) {
+  var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+  if (parent.contains(child)) {
+    return true;
+  } // then fallback to custom implementation with Shadow DOM support
+  else if (rootNode && isShadowRoot(rootNode)) {
+      var next = child;
+
+      do {
+        if (next && parent.isSameNode(next)) {
+          return true;
+        } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+        next = next.parentNode || next.host;
+      } while (next);
+    } // Give up, the result is false
+
+
+  return false;
+}
+
+function rectToClientRect(rect) {
+  return Object.assign({}, rect, {
+    left: rect.x,
+    top: rect.y,
+    right: rect.x + rect.width,
+    bottom: rect.y + rect.height
+  });
+}
+
+function getInnerBoundingClientRect(element) {
+  var rect = getBoundingClientRect(element);
+  rect.top = rect.top + element.clientTop;
+  rect.left = rect.left + element.clientLeft;
+  rect.bottom = rect.top + element.clientHeight;
+  rect.right = rect.left + element.clientWidth;
+  rect.width = element.clientWidth;
+  rect.height = element.clientHeight;
+  rect.x = rect.left;
+  rect.y = rect.top;
+  return rect;
+}
+
+function getClientRectFromMixedType(element, clippingParent) {
+  return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+} // A "clipping parent" is an overflowable container with the characteristic of
+// clipping (or hiding) overflowing elements with a position different from
+// `initial`
+
+
+function getClippingParents(element) {
+  var clippingParents = listScrollParents(getParentNode(element));
+  var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+  var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+  if (!isElement(clipperElement)) {
+    return [];
+  } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+  return clippingParents.filter(function (clippingParent) {
+    return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+  });
+} // Gets the maximum area that the element is visible in due to any number of
+// clipping parents
+
+
+function getClippingRect(element, boundary, rootBoundary) {
+  var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+  var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+  var firstClippingParent = clippingParents[0];
+  var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+    var rect = getClientRectFromMixedType(element, clippingParent);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromMixedType(element, firstClippingParent));
+  clippingRect.width = clippingRect.right - clippingRect.left;
+  clippingRect.height = clippingRect.bottom - clippingRect.top;
+  clippingRect.x = clippingRect.left;
+  clippingRect.y = clippingRect.top;
+  return clippingRect;
+}
+
+function getVariation(placement) {
+  return placement.split('-')[1];
+}
+
+function getMainAxisFromPlacement(placement) {
+  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+}
+
+function computeOffsets(_ref) {
+  var reference = _ref.reference,
+      element = _ref.element,
+      placement = _ref.placement;
+  var basePlacement = placement ? getBasePlacement(placement) : null;
+  var variation = placement ? getVariation(placement) : null;
+  var commonX = reference.x + reference.width / 2 - element.width / 2;
+  var commonY = reference.y + reference.height / 2 - element.height / 2;
+  var offsets;
+
+  switch (basePlacement) {
+    case top:
+      offsets = {
+        x: commonX,
+        y: reference.y - element.height
+      };
+      break;
+
+    case bottom:
+      offsets = {
+        x: commonX,
+        y: reference.y + reference.height
+      };
+      break;
+
+    case right:
+      offsets = {
+        x: reference.x + reference.width,
+        y: commonY
+      };
+      break;
+
+    case left:
+      offsets = {
+        x: reference.x - element.width,
+        y: commonY
+      };
+      break;
+
+    default:
+      offsets = {
+        x: reference.x,
+        y: reference.y
+      };
+  }
+
+  var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+  if (mainAxis != null) {
+    var len = mainAxis === 'y' ? 'height' : 'width';
+
+    switch (variation) {
+      case start:
+        offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+        break;
+
+      case end:
+        offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+        break;
+    }
+  }
+
+  return offsets;
+}
+
+function getFreshSideObject() {
+  return {
+    top: 0,
+    right: 0,
+    bottom: 0,
+    left: 0
+  };
+}
+
+function mergePaddingObject(paddingObject) {
+  return Object.assign({}, getFreshSideObject(), paddingObject);
+}
+
+function expandToHashMap(value, keys) {
+  return keys.reduce(function (hashMap, key) {
+    hashMap[key] = value;
+    return hashMap;
+  }, {});
+}
+
+function detectOverflow(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      _options$placement = _options.placement,
+      placement = _options$placement === void 0 ? state.placement : _options$placement,
+      _options$boundary = _options.boundary,
+      boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+      _options$rootBoundary = _options.rootBoundary,
+      rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+      _options$elementConte = _options.elementContext,
+      elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+      _options$altBoundary = _options.altBoundary,
+      altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+      _options$padding = _options.padding,
+      padding = _options$padding === void 0 ? 0 : _options$padding;
+  var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+  var altContext = elementContext === popper ? reference : popper;
+  var popperRect = state.rects.popper;
+  var element = state.elements[altBoundary ? altContext : elementContext];
+  var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+  var referenceClientRect = getBoundingClientRect(state.elements.reference);
+  var popperOffsets = computeOffsets({
+    reference: referenceClientRect,
+    element: popperRect,
+    strategy: 'absolute',
+    placement: placement
+  });
+  var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+  var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+  // 0 or negative = within the clipping rect
+
+  var overflowOffsets = {
+    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+    bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+    right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+  };
+  var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+  if (elementContext === popper && offsetData) {
+    var offset = offsetData[placement];
+    Object.keys(overflowOffsets).forEach(function (key) {
+      var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+      var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+      overflowOffsets[key] += offset[axis] * multiply;
+    });
+  }
+
+  return overflowOffsets;
+}
+
+var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+var DEFAULT_OPTIONS = {
+  placement: 'bottom',
+  modifiers: [],
+  strategy: 'absolute'
+};
+
+function areValidElements() {
+  for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+    args[_key] = arguments[_key];
+  }
+
+  return !args.some(function (element) {
+    return !(element && typeof element.getBoundingClientRect === 'function');
+  });
+}
+
+function popperGenerator(generatorOptions) {
+  if (generatorOptions === void 0) {
+    generatorOptions = {};
+  }
+
+  var _generatorOptions = generatorOptions,
+      _generatorOptions$def = _generatorOptions.defaultModifiers,
+      defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+      _generatorOptions$def2 = _generatorOptions.defaultOptions,
+      defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+  return function createPopper(reference, popper, options) {
+    if (options === void 0) {
+      options = defaultOptions;
+    }
+
+    var state = {
+      placement: 'bottom',
+      orderedModifiers: [],
+      options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+      modifiersData: {},
+      elements: {
+        reference: reference,
+        popper: popper
+      },
+      attributes: {},
+      styles: {}
+    };
+    var effectCleanupFns = [];
+    var isDestroyed = false;
+    var instance = {
+      state: state,
+      setOptions: function setOptions(setOptionsAction) {
+        var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+        cleanupModifierEffects();
+        state.options = Object.assign({}, defaultOptions, state.options, options);
+        state.scrollParents = {
+          reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+          popper: listScrollParents(popper)
+        }; // Orders the modifiers based on their dependencies and `phase`
+        // properties
+
+        var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+        state.orderedModifiers = orderedModifiers.filter(function (m) {
+          return m.enabled;
+        }); // Validate the provided modifiers so that the consumer will get warned
+        // if one of the modifiers is invalid for any reason
+
+        if (process.env.NODE_ENV !== "production") {
+          var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+            var name = _ref.name;
+            return name;
+          });
+          validateModifiers(modifiers);
+
+          if (getBasePlacement(state.options.placement) === auto) {
+            var flipModifier = state.orderedModifiers.find(function (_ref2) {
+              var name = _ref2.name;
+              return name === 'flip';
+            });
+
+            if (!flipModifier) {
+              console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+            }
+          }
+
+          var _getComputedStyle = getComputedStyle(popper),
+              marginTop = _getComputedStyle.marginTop,
+              marginRight = _getComputedStyle.marginRight,
+              marginBottom = _getComputedStyle.marginBottom,
+              marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+          // cause bugs with positioning, so we'll warn the consumer
+
+
+          if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+            return parseFloat(margin);
+          })) {
+            console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+          }
+        }
+
+        runModifierEffects();
+        return instance.update();
+      },
+      // Sync update – it will always be executed, even if not necessary. This
+      // is useful for low frequency updates where sync behavior simplifies the
+      // logic.
+      // For high frequency updates (e.g. `resize` and `scroll` events), always
+      // prefer the async Popper#update method
+      forceUpdate: function forceUpdate() {
+        if (isDestroyed) {
+          return;
+        }
+
+        var _state$elements = state.elements,
+            reference = _state$elements.reference,
+            popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+        // anymore
+
+        if (!areValidElements(reference, popper)) {
+          if (process.env.NODE_ENV !== "production") {
+            console.error(INVALID_ELEMENT_ERROR);
+          }
+
+          return;
+        } // Store the reference and popper rects to be read by modifiers
+
+
+        state.rects = {
+          reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+          popper: getLayoutRect(popper)
+        }; // Modifiers have the ability to reset the current update cycle. The
+        // most common use case for this is the `flip` modifier changing the
+        // placement, which then needs to re-run all the modifiers, because the
+        // logic was previously ran for the previous placement and is therefore
+        // stale/incorrect
+
+        state.reset = false;
+        state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+        // is filled with the initial data specified by the modifier. This means
+        // it doesn't persist and is fresh on each update.
+        // To ensure persistent data, use `${name}#persistent`
+
+        state.orderedModifiers.forEach(function (modifier) {
+          return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+        });
+        var __debug_loops__ = 0;
+
+        for (var index = 0; index < state.orderedModifiers.length; index++) {
+          if (process.env.NODE_ENV !== "production") {
+            __debug_loops__ += 1;
+
+            if (__debug_loops__ > 100) {
+              console.error(INFINITE_LOOP_ERROR);
+              break;
+            }
+          }
+
+          if (state.reset === true) {
+            state.reset = false;
+            index = -1;
+            continue;
+          }
+
+          var _state$orderedModifie = state.orderedModifiers[index],
+              fn = _state$orderedModifie.fn,
+              _state$orderedModifie2 = _state$orderedModifie.options,
+              _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+              name = _state$orderedModifie.name;
+
+          if (typeof fn === 'function') {
+            state = fn({
+              state: state,
+              options: _options,
+              name: name,
+              instance: instance
+            }) || state;
+          }
+        }
+      },
+      // Async and optimistically optimized update – it will not be executed if
+      // not necessary (debounced to run at most once-per-tick)
+      update: debounce(function () {
+        return new Promise(function (resolve) {
+          instance.forceUpdate();
+          resolve(state);
+        });
+      }),
+      destroy: function destroy() {
+        cleanupModifierEffects();
+        isDestroyed = true;
+      }
+    };
+
+    if (!areValidElements(reference, popper)) {
+      if (process.env.NODE_ENV !== "production") {
+        console.error(INVALID_ELEMENT_ERROR);
+      }
+
+      return instance;
+    }
+
+    instance.setOptions(options).then(function (state) {
+      if (!isDestroyed && options.onFirstUpdate) {
+        options.onFirstUpdate(state);
+      }
+    }); // Modifiers have the ability to execute arbitrary code before the first
+    // update cycle runs. They will be executed in the same order as the update
+    // cycle. This is useful when a modifier adds some persistent data that
+    // other modifiers need to use, but the modifier is run after the dependent
+    // one.
+
+    function runModifierEffects() {
+      state.orderedModifiers.forEach(function (_ref3) {
+        var name = _ref3.name,
+            _ref3$options = _ref3.options,
+            options = _ref3$options === void 0 ? {} : _ref3$options,
+            effect = _ref3.effect;
+
+        if (typeof effect === 'function') {
+          var cleanupFn = effect({
+            state: state,
+            name: name,
+            instance: instance,
+            options: options
+          });
+
+          var noopFn = function noopFn() {};
+
+          effectCleanupFns.push(cleanupFn || noopFn);
+        }
+      });
+    }
+
+    function cleanupModifierEffects() {
+      effectCleanupFns.forEach(function (fn) {
+        return fn();
+      });
+      effectCleanupFns = [];
+    }
+
+    return instance;
+  };
+}
+
+var passive = {
+  passive: true
+};
+
+function effect$2(_ref) {
+  var state = _ref.state,
+      instance = _ref.instance,
+      options = _ref.options;
+  var _options$scroll = options.scroll,
+      scroll = _options$scroll === void 0 ? true : _options$scroll,
+      _options$resize = options.resize,
+      resize = _options$resize === void 0 ? true : _options$resize;
+  var window = getWindow(state.elements.popper);
+  var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);
+
+  if (scroll) {
+    scrollParents.forEach(function (scrollParent) {
+      scrollParent.addEventListener('scroll', instance.update, passive);
+    });
+  }
+
+  if (resize) {
+    window.addEventListener('resize', instance.update, passive);
+  }
+
+  return function () {
+    if (scroll) {
+      scrollParents.forEach(function (scrollParent) {
+        scrollParent.removeEventListener('scroll', instance.update, passive);
+      });
+    }
+
+    if (resize) {
+      window.removeEventListener('resize', instance.update, passive);
+    }
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var eventListeners = {
+  name: 'eventListeners',
+  enabled: true,
+  phase: 'write',
+  fn: function fn() {},
+  effect: effect$2,
+  data: {}
+};
+
+function popperOffsets(_ref) {
+  var state = _ref.state,
+      name = _ref.name;
+  // Offsets are the actual position the popper needs to have to be
+  // properly positioned near its reference element
+  // This is the most basic placement, and will be adjusted by
+  // the modifiers in the next step
+  state.modifiersData[name] = computeOffsets({
+    reference: state.rects.reference,
+    element: state.rects.popper,
+    strategy: 'absolute',
+    placement: state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var popperOffsets$1 = {
+  name: 'popperOffsets',
+  enabled: true,
+  phase: 'read',
+  fn: popperOffsets,
+  data: {}
+};
+
+var unsetSides = {
+  top: 'auto',
+  right: 'auto',
+  bottom: 'auto',
+  left: 'auto'
+}; // Round the offsets to the nearest suitable subpixel based on the DPR.
+// Zooming can change the DPR, but it seems to report a value that will
+// cleanly divide the values into the appropriate subpixels.
+
+function roundOffsetsByDPR(_ref) {
+  var x = _ref.x,
+      y = _ref.y;
+  var win = window;
+  var dpr = win.devicePixelRatio || 1;
+  return {
+    x: round(x * dpr) / dpr || 0,
+    y: round(y * dpr) / dpr || 0
+  };
+}
+
+function mapToStyles(_ref2) {
+  var _Object$assign2;
+
+  var popper = _ref2.popper,
+      popperRect = _ref2.popperRect,
+      placement = _ref2.placement,
+      variation = _ref2.variation,
+      offsets = _ref2.offsets,
+      position = _ref2.position,
+      gpuAcceleration = _ref2.gpuAcceleration,
+      adaptive = _ref2.adaptive,
+      roundOffsets = _ref2.roundOffsets,
+      isFixed = _ref2.isFixed;
+
+  var _ref3 = roundOffsets === true ? roundOffsetsByDPR(offsets) : typeof roundOffsets === 'function' ? roundOffsets(offsets) : offsets,
+      _ref3$x = _ref3.x,
+      x = _ref3$x === void 0 ? 0 : _ref3$x,
+      _ref3$y = _ref3.y,
+      y = _ref3$y === void 0 ? 0 : _ref3$y;
+
+  var hasX = offsets.hasOwnProperty('x');
+  var hasY = offsets.hasOwnProperty('y');
+  var sideX = left;
+  var sideY = top;
+  var win = window;
+
+  if (adaptive) {
+    var offsetParent = getOffsetParent(popper);
+    var heightProp = 'clientHeight';
+    var widthProp = 'clientWidth';
+
+    if (offsetParent === getWindow(popper)) {
+      offsetParent = getDocumentElement(popper);
+
+      if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {
+        heightProp = 'scrollHeight';
+        widthProp = 'scrollWidth';
+      }
+    } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+
+
+    offsetParent = offsetParent;
+
+    if (placement === top || (placement === left || placement === right) && variation === end) {
+      sideY = bottom;
+      var offsetY = isFixed && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]
+      offsetParent[heightProp];
+      y -= offsetY - popperRect.height;
+      y *= gpuAcceleration ? 1 : -1;
+    }
+
+    if (placement === left || (placement === top || placement === bottom) && variation === end) {
+      sideX = right;
+      var offsetX = isFixed && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
+      offsetParent[widthProp];
+      x -= offsetX - popperRect.width;
+      x *= gpuAcceleration ? 1 : -1;
+    }
+  }
+
+  var commonStyles = Object.assign({
+    position: position
+  }, adaptive && unsetSides);
+
+  if (gpuAcceleration) {
+    var _Object$assign;
+
+    return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
+  }
+
+  return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
+}
+
+function computeStyles(_ref4) {
+  var state = _ref4.state,
+      options = _ref4.options;
+  var _options$gpuAccelerat = options.gpuAcceleration,
+      gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
+      _options$adaptive = options.adaptive,
+      adaptive = _options$adaptive === void 0 ? true : _options$adaptive,
+      _options$roundOffsets = options.roundOffsets,
+      roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;
+
+  if (process.env.NODE_ENV !== "production") {
+    var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
+
+    if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
+      return transitionProperty.indexOf(property) >= 0;
+    })) {
+      console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
+    }
+  }
+
+  var commonStyles = {
+    placement: getBasePlacement(state.placement),
+    variation: getVariation(state.placement),
+    popper: state.elements.popper,
+    popperRect: state.rects.popper,
+    gpuAcceleration: gpuAcceleration,
+    isFixed: state.options.strategy === 'fixed'
+  };
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.popperOffsets,
+      position: state.options.strategy,
+      adaptive: adaptive,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  if (state.modifiersData.arrow != null) {
+    state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.arrow,
+      position: 'absolute',
+      adaptive: false,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  state.attributes.popper = Object.assign({}, state.attributes.popper, {
+    'data-popper-placement': state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var computeStyles$1 = {
+  name: 'computeStyles',
+  enabled: true,
+  phase: 'beforeWrite',
+  fn: computeStyles,
+  data: {}
+};
+
+// and applies them to the HTMLElements such as popper and arrow
+
+function applyStyles(_ref) {
+  var state = _ref.state;
+  Object.keys(state.elements).forEach(function (name) {
+    var style = state.styles[name] || {};
+    var attributes = state.attributes[name] || {};
+    var element = state.elements[name]; // arrow is optional + virtual elements
+
+    if (!isHTMLElement(element) || !getNodeName(element)) {
+      return;
+    } // Flow doesn't support to extend this property, but it's the most
+    // effective way to apply styles to an HTMLElement
+    // $FlowFixMe[cannot-write]
+
+
+    Object.assign(element.style, style);
+    Object.keys(attributes).forEach(function (name) {
+      var value = attributes[name];
+
+      if (value === false) {
+        element.removeAttribute(name);
+      } else {
+        element.setAttribute(name, value === true ? '' : value);
+      }
+    });
+  });
+}
+
+function effect$1(_ref2) {
+  var state = _ref2.state;
+  var initialStyles = {
+    popper: {
+      position: state.options.strategy,
+      left: '0',
+      top: '0',
+      margin: '0'
+    },
+    arrow: {
+      position: 'absolute'
+    },
+    reference: {}
+  };
+  Object.assign(state.elements.popper.style, initialStyles.popper);
+  state.styles = initialStyles;
+
+  if (state.elements.arrow) {
+    Object.assign(state.elements.arrow.style, initialStyles.arrow);
+  }
+
+  return function () {
+    Object.keys(state.elements).forEach(function (name) {
+      var element = state.elements[name];
+      var attributes = state.attributes[name] || {};
+      var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them
+
+      var style = styleProperties.reduce(function (style, property) {
+        style[property] = '';
+        return style;
+      }, {}); // arrow is optional + virtual elements
+
+      if (!isHTMLElement(element) || !getNodeName(element)) {
+        return;
+      }
+
+      Object.assign(element.style, style);
+      Object.keys(attributes).forEach(function (attribute) {
+        element.removeAttribute(attribute);
+      });
+    });
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var applyStyles$1 = {
+  name: 'applyStyles',
+  enabled: true,
+  phase: 'write',
+  fn: applyStyles,
+  effect: effect$1,
+  requires: ['computeStyles']
+};
+
+function distanceAndSkiddingToXY(placement, rects, offset) {
+  var basePlacement = getBasePlacement(placement);
+  var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;
+
+  var _ref = typeof offset === 'function' ? offset(Object.assign({}, rects, {
+    placement: placement
+  })) : offset,
+      skidding = _ref[0],
+      distance = _ref[1];
+
+  skidding = skidding || 0;
+  distance = (distance || 0) * invertDistance;
+  return [left, right].indexOf(basePlacement) >= 0 ? {
+    x: distance,
+    y: skidding
+  } : {
+    x: skidding,
+    y: distance
+  };
+}
+
+function offset(_ref2) {
+  var state = _ref2.state,
+      options = _ref2.options,
+      name = _ref2.name;
+  var _options$offset = options.offset,
+      offset = _options$offset === void 0 ? [0, 0] : _options$offset;
+  var data = placements.reduce(function (acc, placement) {
+    acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);
+    return acc;
+  }, {});
+  var _data$state$placement = data[state.placement],
+      x = _data$state$placement.x,
+      y = _data$state$placement.y;
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.modifiersData.popperOffsets.x += x;
+    state.modifiersData.popperOffsets.y += y;
+  }
+
+  state.modifiersData[name] = data;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var offset$1 = {
+  name: 'offset',
+  enabled: true,
+  phase: 'main',
+  requires: ['popperOffsets'],
+  fn: offset
+};
+
+var hash$1 = {
+  left: 'right',
+  right: 'left',
+  bottom: 'top',
+  top: 'bottom'
+};
+function getOppositePlacement(placement) {
+  return placement.replace(/left|right|bottom|top/g, function (matched) {
+    return hash$1[matched];
+  });
+}
+
+var hash = {
+  start: 'end',
+  end: 'start'
+};
+function getOppositeVariationPlacement(placement) {
+  return placement.replace(/start|end/g, function (matched) {
+    return hash[matched];
+  });
+}
+
+function computeAutoPlacement(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      placement = _options.placement,
+      boundary = _options.boundary,
+      rootBoundary = _options.rootBoundary,
+      padding = _options.padding,
+      flipVariations = _options.flipVariations,
+      _options$allowedAutoP = _options.allowedAutoPlacements,
+      allowedAutoPlacements = _options$allowedAutoP === void 0 ? placements : _options$allowedAutoP;
+  var variation = getVariation(placement);
+  var placements$1 = variation ? flipVariations ? variationPlacements : variationPlacements.filter(function (placement) {
+    return getVariation(placement) === variation;
+  }) : basePlacements;
+  var allowedPlacements = placements$1.filter(function (placement) {
+    return allowedAutoPlacements.indexOf(placement) >= 0;
+  });
+
+  if (allowedPlacements.length === 0) {
+    allowedPlacements = placements$1;
+
+    if (process.env.NODE_ENV !== "production") {
+      console.error(['Popper: The `allowedAutoPlacements` option did not allow any', 'placements. Ensure the `placement` option matches the variation', 'of the allowed placements.', 'For example, "auto" cannot be used to allow "bottom-start".', 'Use "auto-start" instead.'].join(' '));
+    }
+  } // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...
+
+
+  var overflows = allowedPlacements.reduce(function (acc, placement) {
+    acc[placement] = detectOverflow(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      padding: padding
+    })[getBasePlacement(placement)];
+    return acc;
+  }, {});
+  return Object.keys(overflows).sort(function (a, b) {
+    return overflows[a] - overflows[b];
+  });
+}
+
+function getExpandedFallbackPlacements(placement) {
+  if (getBasePlacement(placement) === auto) {
+    return [];
+  }
+
+  var oppositePlacement = getOppositePlacement(placement);
+  return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];
+}
+
+function flip(_ref) {
+  var state = _ref.state,
+      options = _ref.options,
+      name = _ref.name;
+
+  if (state.modifiersData[name]._skip) {
+    return;
+  }
+
+  var _options$mainAxis = options.mainAxis,
+      checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+      _options$altAxis = options.altAxis,
+      checkAltAxis = _options$altAxis === void 0 ? true : _options$altAxis,
+      specifiedFallbackPlacements = options.fallbackPlacements,
+      padding = options.padding,
+      boundary = options.boundary,
+      rootBoundary = options.rootBoundary,
+      altBoundary = options.altBoundary,
+      _options$flipVariatio = options.flipVariations,
+      flipVariations = _options$flipVariatio === void 0 ? true : _options$flipVariatio,
+      allowedAutoPlacements = options.allowedAutoPlacements;
+  var preferredPlacement = state.options.placement;
+  var basePlacement = getBasePlacement(preferredPlacement);
+  var isBasePlacement = basePlacement === preferredPlacement;
+  var fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipVariations ? [getOppositePlacement(preferredPlacement)] : getExpandedFallbackPlacements(preferredPlacement));
+  var placements = [preferredPlacement].concat(fallbackPlacements).reduce(function (acc, placement) {
+    return acc.concat(getBasePlacement(placement) === auto ? computeAutoPlacement(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      padding: padding,
+      flipVariations: flipVariations,
+      allowedAutoPlacements: allowedAutoPlacements
+    }) : placement);
+  }, []);
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var checksMap = new Map();
+  var makeFallbackChecks = true;
+  var firstFittingPlacement = placements[0];
+
+  for (var i = 0; i < placements.length; i++) {
+    var placement = placements[i];
+
+    var _basePlacement = getBasePlacement(placement);
+
+    var isStartVariation = getVariation(placement) === start;
+    var isVertical = [top, bottom].indexOf(_basePlacement) >= 0;
+    var len = isVertical ? 'width' : 'height';
+    var overflow = detectOverflow(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      altBoundary: altBoundary,
+      padding: padding
+    });
+    var mainVariationSide = isVertical ? isStartVariation ? right : left : isStartVariation ? bottom : top;
+
+    if (referenceRect[len] > popperRect[len]) {
+      mainVariationSide = getOppositePlacement(mainVariationSide);
+    }
+
+    var altVariationSide = getOppositePlacement(mainVariationSide);
+    var checks = [];
+
+    if (checkMainAxis) {
+      checks.push(overflow[_basePlacement] <= 0);
+    }
+
+    if (checkAltAxis) {
+      checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);
+    }
+
+    if (checks.every(function (check) {
+      return check;
+    })) {
+      firstFittingPlacement = placement;
+      makeFallbackChecks = false;
+      break;
+    }
+
+    checksMap.set(placement, checks);
+  }
+
+  if (makeFallbackChecks) {
+    // `2` may be desired in some cases – research later
+    var numberOfChecks = flipVariations ? 3 : 1;
+
+    var _loop = function _loop(_i) {
+      var fittingPlacement = placements.find(function (placement) {
+        var checks = checksMap.get(placement);
+
+        if (checks) {
+          return checks.slice(0, _i).every(function (check) {
+            return check;
+          });
+        }
+      });
+
+      if (fittingPlacement) {
+        firstFittingPlacement = fittingPlacement;
+        return "break";
+      }
+    };
+
+    for (var _i = numberOfChecks; _i > 0; _i--) {
+      var _ret = _loop(_i);
+
+      if (_ret === "break") break;
+    }
+  }
+
+  if (state.placement !== firstFittingPlacement) {
+    state.modifiersData[name]._skip = true;
+    state.placement = firstFittingPlacement;
+    state.reset = true;
+  }
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var flip$1 = {
+  name: 'flip',
+  enabled: true,
+  phase: 'main',
+  fn: flip,
+  requiresIfExists: ['offset'],
+  data: {
+    _skip: false
+  }
+};
+
+function getAltAxis(axis) {
+  return axis === 'x' ? 'y' : 'x';
+}
+
+function within(min$1, value, max$1) {
+  return max(min$1, min(value, max$1));
+}
+function withinMaxClamp(min, value, max) {
+  var v = within(min, value, max);
+  return v > max ? max : v;
+}
+
+function preventOverflow(_ref) {
+  var state = _ref.state,
+      options = _ref.options,
+      name = _ref.name;
+  var _options$mainAxis = options.mainAxis,
+      checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+      _options$altAxis = options.altAxis,
+      checkAltAxis = _options$altAxis === void 0 ? false : _options$altAxis,
+      boundary = options.boundary,
+      rootBoundary = options.rootBoundary,
+      altBoundary = options.altBoundary,
+      padding = options.padding,
+      _options$tether = options.tether,
+      tether = _options$tether === void 0 ? true : _options$tether,
+      _options$tetherOffset = options.tetherOffset,
+      tetherOffset = _options$tetherOffset === void 0 ? 0 : _options$tetherOffset;
+  var overflow = detectOverflow(state, {
+    boundary: boundary,
+    rootBoundary: rootBoundary,
+    padding: padding,
+    altBoundary: altBoundary
+  });
+  var basePlacement = getBasePlacement(state.placement);
+  var variation = getVariation(state.placement);
+  var isBasePlacement = !variation;
+  var mainAxis = getMainAxisFromPlacement(basePlacement);
+  var altAxis = getAltAxis(mainAxis);
+  var popperOffsets = state.modifiersData.popperOffsets;
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var tetherOffsetValue = typeof tetherOffset === 'function' ? tetherOffset(Object.assign({}, state.rects, {
+    placement: state.placement
+  })) : tetherOffset;
+  var normalizedTetherOffsetValue = typeof tetherOffsetValue === 'number' ? {
+    mainAxis: tetherOffsetValue,
+    altAxis: tetherOffsetValue
+  } : Object.assign({
+    mainAxis: 0,
+    altAxis: 0
+  }, tetherOffsetValue);
+  var offsetModifierState = state.modifiersData.offset ? state.modifiersData.offset[state.placement] : null;
+  var data = {
+    x: 0,
+    y: 0
+  };
+
+  if (!popperOffsets) {
+    return;
+  }
+
+  if (checkMainAxis) {
+    var _offsetModifierState$;
+
+    var mainSide = mainAxis === 'y' ? top : left;
+    var altSide = mainAxis === 'y' ? bottom : right;
+    var len = mainAxis === 'y' ? 'height' : 'width';
+    var offset = popperOffsets[mainAxis];
+    var min$1 = offset + overflow[mainSide];
+    var max$1 = offset - overflow[altSide];
+    var additive = tether ? -popperRect[len] / 2 : 0;
+    var minLen = variation === start ? referenceRect[len] : popperRect[len];
+    var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go
+    // outside the reference bounds
+
+    var arrowElement = state.elements.arrow;
+    var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {
+      width: 0,
+      height: 0
+    };
+    var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();
+    var arrowPaddingMin = arrowPaddingObject[mainSide];
+    var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want
+    // to include its full size in the calculation. If the reference is small
+    // and near the edge of a boundary, the popper can overflow even if the
+    // reference is not overflowing as well (e.g. virtual elements with no
+    // width or height)
+
+    var arrowLen = within(0, referenceRect[len], arrowRect[len]);
+    var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis : minLen - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis;
+    var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis : maxLen + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis;
+    var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);
+    var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;
+    var offsetModifierValue = (_offsetModifierState$ = offsetModifierState == null ? void 0 : offsetModifierState[mainAxis]) != null ? _offsetModifierState$ : 0;
+    var tetherMin = offset + minOffset - offsetModifierValue - clientOffset;
+    var tetherMax = offset + maxOffset - offsetModifierValue;
+    var preventedOffset = within(tether ? min(min$1, tetherMin) : min$1, offset, tether ? max(max$1, tetherMax) : max$1);
+    popperOffsets[mainAxis] = preventedOffset;
+    data[mainAxis] = preventedOffset - offset;
+  }
+
+  if (checkAltAxis) {
+    var _offsetModifierState$2;
+
+    var _mainSide = mainAxis === 'x' ? top : left;
+
+    var _altSide = mainAxis === 'x' ? bottom : right;
+
+    var _offset = popperOffsets[altAxis];
+
+    var _len = altAxis === 'y' ? 'height' : 'width';
+
+    var _min = _offset + overflow[_mainSide];
+
+    var _max = _offset - overflow[_altSide];
+
+    var isOriginSide = [top, left].indexOf(basePlacement) !== -1;
+
+    var _offsetModifierValue = (_offsetModifierState$2 = offsetModifierState == null ? void 0 : offsetModifierState[altAxis]) != null ? _offsetModifierState$2 : 0;
+
+    var _tetherMin = isOriginSide ? _min : _offset - referenceRect[_len] - popperRect[_len] - _offsetModifierValue + normalizedTetherOffsetValue.altAxis;
+
+    var _tetherMax = isOriginSide ? _offset + referenceRect[_len] + popperRect[_len] - _offsetModifierValue - normalizedTetherOffsetValue.altAxis : _max;
+
+    var _preventedOffset = tether && isOriginSide ? withinMaxClamp(_tetherMin, _offset, _tetherMax) : within(tether ? _tetherMin : _min, _offset, tether ? _tetherMax : _max);
+
+    popperOffsets[altAxis] = _preventedOffset;
+    data[altAxis] = _preventedOffset - _offset;
+  }
+
+  state.modifiersData[name] = data;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var preventOverflow$1 = {
+  name: 'preventOverflow',
+  enabled: true,
+  phase: 'main',
+  fn: preventOverflow,
+  requiresIfExists: ['offset']
+};
+
+var toPaddingObject = function toPaddingObject(padding, state) {
+  padding = typeof padding === 'function' ? padding(Object.assign({}, state.rects, {
+    placement: state.placement
+  })) : padding;
+  return mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+};
+
+function arrow(_ref) {
+  var _state$modifiersData$;
+
+  var state = _ref.state,
+      name = _ref.name,
+      options = _ref.options;
+  var arrowElement = state.elements.arrow;
+  var popperOffsets = state.modifiersData.popperOffsets;
+  var basePlacement = getBasePlacement(state.placement);
+  var axis = getMainAxisFromPlacement(basePlacement);
+  var isVertical = [left, right].indexOf(basePlacement) >= 0;
+  var len = isVertical ? 'height' : 'width';
+
+  if (!arrowElement || !popperOffsets) {
+    return;
+  }
+
+  var paddingObject = toPaddingObject(options.padding, state);
+  var arrowRect = getLayoutRect(arrowElement);
+  var minProp = axis === 'y' ? top : left;
+  var maxProp = axis === 'y' ? bottom : right;
+  var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];
+  var startDiff = popperOffsets[axis] - state.rects.reference[axis];
+  var arrowOffsetParent = getOffsetParent(arrowElement);
+  var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;
+  var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is
+  // outside of the popper bounds
+
+  var min = paddingObject[minProp];
+  var max = clientSize - arrowRect[len] - paddingObject[maxProp];
+  var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
+  var offset = within(min, center, max); // Prevents breaking syntax highlighting...
+
+  var axisProp = axis;
+  state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);
+}
+
+function effect(_ref2) {
+  var state = _ref2.state,
+      options = _ref2.options;
+  var _options$element = options.element,
+      arrowElement = _options$element === void 0 ? '[data-popper-arrow]' : _options$element;
+
+  if (arrowElement == null) {
+    return;
+  } // CSS selector
+
+
+  if (typeof arrowElement === 'string') {
+    arrowElement = state.elements.popper.querySelector(arrowElement);
+
+    if (!arrowElement) {
+      return;
+    }
+  }
+
+  if (process.env.NODE_ENV !== "production") {
+    if (!isHTMLElement(arrowElement)) {
+      console.error(['Popper: "arrow" element must be an HTMLElement (not an SVGElement).', 'To use an SVG arrow, wrap it in an HTMLElement that will be used as', 'the arrow.'].join(' '));
+    }
+  }
+
+  if (!contains(state.elements.popper, arrowElement)) {
+    if (process.env.NODE_ENV !== "production") {
+      console.error(['Popper: "arrow" modifier\'s `element` must be a child of the popper', 'element.'].join(' '));
+    }
+
+    return;
+  }
+
+  state.elements.arrow = arrowElement;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var arrow$1 = {
+  name: 'arrow',
+  enabled: true,
+  phase: 'main',
+  fn: arrow,
+  effect: effect,
+  requires: ['popperOffsets'],
+  requiresIfExists: ['preventOverflow']
+};
+
+function getSideOffsets(overflow, rect, preventedOffsets) {
+  if (preventedOffsets === void 0) {
+    preventedOffsets = {
+      x: 0,
+      y: 0
+    };
+  }
+
+  return {
+    top: overflow.top - rect.height - preventedOffsets.y,
+    right: overflow.right - rect.width + preventedOffsets.x,
+    bottom: overflow.bottom - rect.height + preventedOffsets.y,
+    left: overflow.left - rect.width - preventedOffsets.x
+  };
+}
+
+function isAnySideFullyClipped(overflow) {
+  return [top, right, bottom, left].some(function (side) {
+    return overflow[side] >= 0;
+  });
+}
+
+function hide(_ref) {
+  var state = _ref.state,
+      name = _ref.name;
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var preventedOffsets = state.modifiersData.preventOverflow;
+  var referenceOverflow = detectOverflow(state, {
+    elementContext: 'reference'
+  });
+  var popperAltOverflow = detectOverflow(state, {
+    altBoundary: true
+  });
+  var referenceClippingOffsets = getSideOffsets(referenceOverflow, referenceRect);
+  var popperEscapeOffsets = getSideOffsets(popperAltOverflow, popperRect, preventedOffsets);
+  var isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
+  var hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
+  state.modifiersData[name] = {
+    referenceClippingOffsets: referenceClippingOffsets,
+    popperEscapeOffsets: popperEscapeOffsets,
+    isReferenceHidden: isReferenceHidden,
+    hasPopperEscaped: hasPopperEscaped
+  };
+  state.attributes.popper = Object.assign({}, state.attributes.popper, {
+    'data-popper-reference-hidden': isReferenceHidden,
+    'data-popper-escaped': hasPopperEscaped
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+var hide$1 = {
+  name: 'hide',
+  enabled: true,
+  phase: 'main',
+  requiresIfExists: ['preventOverflow'],
+  fn: hide
+};
+
+var defaultModifiers$1 = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1];
+var createPopper$1 = /*#__PURE__*/popperGenerator({
+  defaultModifiers: defaultModifiers$1
+}); // eslint-disable-next-line import/no-unused-modules
+
+var defaultModifiers = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1, offset$1, flip$1, preventOverflow$1, arrow$1, hide$1];
+var createPopper = /*#__PURE__*/popperGenerator({
+  defaultModifiers: defaultModifiers
+}); // eslint-disable-next-line import/no-unused-modules
+
+exports.applyStyles = applyStyles$1;
+exports.arrow = arrow$1;
+exports.computeStyles = computeStyles$1;
+exports.createPopper = createPopper;
+exports.createPopperLite = createPopper$1;
+exports.defaultModifiers = defaultModifiers;
+exports.detectOverflow = detectOverflow;
+exports.eventListeners = eventListeners;
+exports.flip = flip$1;
+exports.hide = hide$1;
+exports.offset = offset$1;
+exports.popperGenerator = popperGenerator;
+exports.popperOffsets = popperOffsets$1;
+exports.preventOverflow = preventOverflow$1;
+//# sourceMappingURL=popper.js.map
diff --git a/popperjs/package/dist/cjs/popper.js.flow b/popperjs/package/dist/cjs/popper.js.flow
new file mode 100644
index 0000000..e745d92
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper.js.flow
@@ -0,0 +1,3 @@
+// @flow
+
+export * from '../../lib/popper.js'
diff --git a/popperjs/package/dist/cjs/popper.js.map b/popperjs/package/dist/cjs/popper.js.map
new file mode 100644
index 0000000..d5bb559
--- /dev/null
+++ b/popperjs/package/dist/cjs/popper.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/utils/math.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/isTableElement.js","../../src/dom-utils/getOffsetParent.js","../../src/enums.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/format.js","../../src/utils/validateModifiers.js","../../src/utils/uniqueBy.js","../../src/utils/getBasePlacement.js","../../src/utils/mergeByName.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/utils/computeOffsets.js","../../src/utils/getFreshSideObject.js","../../src/utils/mergePaddingObject.js","../../src/utils/expandToHashMap.js","../../src/utils/detectOverflow.js","../../src/createPopper.js","../../src/modifiers/eventListeners.js","../../src/modifiers/popperOffsets.js","../../src/modifiers/computeStyles.js","../../src/modifiers/applyStyles.js","../../src/modifiers/offset.js","../../src/utils/getOppositePlacement.js","../../src/utils/getOppositeVariationPlacement.js","../../src/utils/computeAutoPlacement.js","../../src/modifiers/flip.js","../../src/utils/getAltAxis.js","../../src/utils/within.js","../../src/modifiers/preventOverflow.js","../../src/modifiers/arrow.js","../../src/modifiers/hide.js","../../src/popper-lite.js","../../src/popper.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\n\nexport default function format(str: string, ...args: Array<string>) {\n  return [...args].reduce((p, c) => p.replace(/%s/, c), str);\n}\n","// @flow\nimport format from './format';\nimport { modifierPhases } from '../enums';\n\nconst INVALID_MODIFIER_ERROR =\n  'Popper: modifier \"%s\" provided an invalid %s property, expected %s but got %s';\nconst MISSING_DEPENDENCY_ERROR =\n  'Popper: modifier \"%s\" requires \"%s\", but \"%s\" modifier is not available';\nconst VALID_PROPERTIES = [\n  'name',\n  'enabled',\n  'phase',\n  'fn',\n  'effect',\n  'requires',\n  'options',\n];\n\nexport default function validateModifiers(modifiers: Array<any>): void {\n  modifiers.forEach((modifier) => {\n    [...Object.keys(modifier), ...VALID_PROPERTIES]\n      // IE11-compatible replacement for `new Set(iterable)`\n      .filter((value, index, self) => self.indexOf(value) === index)\n      .forEach((key) => {\n        switch (key) {\n          case 'name':\n            if (typeof modifier.name !== 'string') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  String(modifier.name),\n                  '\"name\"',\n                  '\"string\"',\n                  `\"${String(modifier.name)}\"`\n                )\n              );\n            }\n            break;\n          case 'enabled':\n            if (typeof modifier.enabled !== 'boolean') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"enabled\"',\n                  '\"boolean\"',\n                  `\"${String(modifier.enabled)}\"`\n                )\n              );\n            }\n            break;\n          case 'phase':\n            if (modifierPhases.indexOf(modifier.phase) < 0) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"phase\"',\n                  `either ${modifierPhases.join(', ')}`,\n                  `\"${String(modifier.phase)}\"`\n                )\n              );\n            }\n            break;\n          case 'fn':\n            if (typeof modifier.fn !== 'function') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"fn\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'effect':\n            if (\n              modifier.effect != null &&\n              typeof modifier.effect !== 'function'\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"effect\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'requires':\n            if (\n              modifier.requires != null &&\n              !Array.isArray(modifier.requires)\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requires\"',\n                  '\"array\"',\n                  `\"${String(modifier.requires)}\"`\n                )\n              );\n            }\n            break;\n          case 'requiresIfExists':\n            if (!Array.isArray(modifier.requiresIfExists)) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requiresIfExists\"',\n                  '\"array\"',\n                  `\"${String(modifier.requiresIfExists)}\"`\n                )\n              );\n            }\n            break;\n          case 'options':\n          case 'data':\n            break;\n          default:\n            console.error(\n              `PopperJS: an invalid property has been provided to the \"${\n                modifier.name\n              }\" modifier, valid properties are ${VALID_PROPERTIES.map(\n                (s) => `\"${s}\"`\n              ).join(', ')}; but \"${key}\" was provided.`\n            );\n        }\n\n        modifier.requires &&\n          modifier.requires.forEach((requirement) => {\n            if (modifiers.find((mod) => mod.name === requirement) == null) {\n              console.error(\n                format(\n                  MISSING_DEPENDENCY_ERROR,\n                  String(modifier.name),\n                  requirement,\n                  requirement\n                )\n              );\n            }\n          });\n      });\n  });\n}\n","// @flow\n\nexport default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {\n  const identifiers = new Set();\n\n  return arr.filter(item => {\n    const identifier = fn(item);\n\n    if (!identifiers.has(identifier)) {\n      identifiers.add(identifier);\n      return true;\n    }\n  });\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 'height' : 'width';\n\n    switch (variation) {\n      case start:\n        offsets[mainAxis] =\n          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n        break;\n      case end:\n        offsets[mainAxis] =\n          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n        break;\n      default:\n    }\n  }\n\n  return offsets;\n}\n","// @flow\nimport type { SideObject } from '../types';\n\nexport default function getFreshSideObject(): SideObject {\n  return {\n    top: 0,\n    right: 0,\n    bottom: 0,\n    left: 0,\n  };\n}\n","// @flow\nimport type { SideObject } from '../types';\nimport getFreshSideObject from './getFreshSideObject';\n\nexport default function mergePaddingObject(\n  paddingObject: $Shape<SideObject>\n): SideObject {\n  return {\n    ...getFreshSideObject(),\n    ...paddingObject,\n  };\n}\n","// @flow\n\nexport default function expandToHashMap<\n  T: number | string | boolean,\n  K: string\n>(value: T, keys: Array<K>): { [key: string]: T } {\n  return keys.reduce((hashMap, key) => {\n    hashMap[key] = value;\n    return hashMap;\n  }, {});\n}\n","// @flow\nimport type { State, SideObject, Padding } from '../types';\nimport type { Placement, Boundary, RootBoundary, Context } from '../enums';\nimport getClippingRect from '../dom-utils/getClippingRect';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getBoundingClientRect from '../dom-utils/getBoundingClientRect';\nimport computeOffsets from './computeOffsets';\nimport rectToClientRect from './rectToClientRect';\nimport {\n  clippingParents,\n  reference,\n  popper,\n  bottom,\n  top,\n  right,\n  basePlacements,\n  viewport,\n} from '../enums';\nimport { isElement } from '../dom-utils/instanceOf';\nimport mergePaddingObject from './mergePaddingObject';\nimport expandToHashMap from './expandToHashMap';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  placement: Placement,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  elementContext: Context,\n  altBoundary: boolean,\n  padding: Padding,\n};\n\nexport default function detectOverflow(\n  state: State,\n  options: $Shape<Options> = {}\n): SideObject {\n  const {\n    placement = state.placement,\n    boundary = clippingParents,\n    rootBoundary = viewport,\n    elementContext = popper,\n    altBoundary = false,\n    padding = 0,\n  } = options;\n\n  const paddingObject = mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n\n  const altContext = elementContext === popper ? reference : popper;\n\n  const popperRect = state.rects.popper;\n  const element = state.elements[altBoundary ? altContext : elementContext];\n\n  const clippingClientRect = getClippingRect(\n    isElement(element)\n      ? element\n      : element.contextElement || getDocumentElement(state.elements.popper),\n    boundary,\n    rootBoundary\n  );\n\n  const referenceClientRect = getBoundingClientRect(state.elements.reference);\n\n  const popperOffsets = computeOffsets({\n    reference: referenceClientRect,\n    element: popperRect,\n    strategy: 'absolute',\n    placement,\n  });\n\n  const popperClientRect = rectToClientRect({\n    ...popperRect,\n    ...popperOffsets,\n  });\n\n  const elementClientRect =\n    elementContext === popper ? popperClientRect : referenceClientRect;\n\n  // positive = overflowing the clipping rect\n  // 0 or negative = within the clipping rect\n  const overflowOffsets = {\n    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n    bottom:\n      elementClientRect.bottom -\n      clippingClientRect.bottom +\n      paddingObject.bottom,\n    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n    right:\n      elementClientRect.right - clippingClientRect.right + paddingObject.right,\n  };\n\n  const offsetData = state.modifiersData.offset;\n\n  // Offsets can be applied only to the popper element\n  if (elementContext === popper && offsetData) {\n    const offset = offsetData[placement];\n\n    Object.keys(overflowOffsets).forEach((key) => {\n      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow };\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport getWindow from '../dom-utils/getWindow';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  scroll: boolean,\n  resize: boolean,\n};\n\nconst passive = { passive: true };\n\nfunction effect({ state, instance, options }: ModifierArguments<Options>) {\n  const { scroll = true, resize = true } = options;\n\n  const window = getWindow(state.elements.popper);\n  const scrollParents = [\n    ...state.scrollParents.reference,\n    ...state.scrollParents.popper,\n  ];\n\n  if (scroll) {\n    scrollParents.forEach(scrollParent => {\n      scrollParent.addEventListener('scroll', instance.update, passive);\n    });\n  }\n\n  if (resize) {\n    window.addEventListener('resize', instance.update, passive);\n  }\n\n  return () => {\n    if (scroll) {\n      scrollParents.forEach(scrollParent => {\n        scrollParent.removeEventListener('scroll', instance.update, passive);\n      });\n    }\n\n    if (resize) {\n      window.removeEventListener('resize', instance.update, passive);\n    }\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type EventListenersModifier = Modifier<'eventListeners', Options>;\nexport default ({\n  name: 'eventListeners',\n  enabled: true,\n  phase: 'write',\n  fn: () => {},\n  effect,\n  data: {},\n}: EventListenersModifier);\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport computeOffsets from '../utils/computeOffsets';\n\nfunction popperOffsets({ state, name }: ModifierArguments<{||}>) {\n  // Offsets are the actual position the popper needs to have to be\n  // properly positioned near its reference element\n  // This is the most basic placement, and will be adjusted by\n  // the modifiers in the next step\n  state.modifiersData[name] = computeOffsets({\n    reference: state.rects.reference,\n    element: state.rects.popper,\n    strategy: 'absolute',\n    placement: state.placement,\n  });\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PopperOffsetsModifier = Modifier<'popperOffsets', {||}>;\nexport default ({\n  name: 'popperOffsets',\n  enabled: true,\n  phase: 'read',\n  fn: popperOffsets,\n  data: {},\n}: PopperOffsetsModifier);\n","// @flow\nimport type {\n  PositioningStrategy,\n  Offsets,\n  Modifier,\n  ModifierArguments,\n  Rect,\n  Window,\n} from '../types';\nimport {\n  type BasePlacement,\n  type Variation,\n  top,\n  left,\n  right,\n  bottom,\n  end,\n} from '../enums';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getWindow from '../dom-utils/getWindow';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getComputedStyle from '../dom-utils/getComputedStyle';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getVariation from '../utils/getVariation';\nimport { round } from '../utils/math';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type RoundOffsets = (\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>\n) => Offsets;\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets?: boolean | RoundOffsets,\n};\n\nconst unsetSides = {\n  top: 'auto',\n  right: 'auto',\n  bottom: 'auto',\n  left: 'auto',\n};\n\n// Round the offsets to the nearest suitable subpixel based on the DPR.\n// Zooming can change the DPR, but it seems to report a value that will\n// cleanly divide the values into the appropriate subpixels.\nfunction roundOffsetsByDPR({ x, y }): Offsets {\n  const win: Window = window;\n  const dpr = win.devicePixelRatio || 1;\n\n  return {\n    x: round(x * dpr) / dpr || 0,\n    y: round(y * dpr) / dpr || 0,\n  };\n}\n\nexport function mapToStyles({\n  popper,\n  popperRect,\n  placement,\n  variation,\n  offsets,\n  position,\n  gpuAcceleration,\n  adaptive,\n  roundOffsets,\n  isFixed,\n}: {\n  popper: HTMLElement,\n  popperRect: Rect,\n  placement: BasePlacement,\n  variation: ?Variation,\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>,\n  position: PositioningStrategy,\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets: boolean | RoundOffsets,\n  isFixed: boolean,\n}) {\n  let { x = 0, y = 0 } =\n    roundOffsets === true\n      ? roundOffsetsByDPR(offsets)\n      : typeof roundOffsets === 'function'\n      ? roundOffsets(offsets)\n      : offsets;\n\n  const hasX = offsets.hasOwnProperty('x');\n  const hasY = offsets.hasOwnProperty('y');\n\n  let sideX: string = left;\n  let sideY: string = top;\n\n  const win: Window = window;\n\n  if (adaptive) {\n    let offsetParent = getOffsetParent(popper);\n    let heightProp = 'clientHeight';\n    let widthProp = 'clientWidth';\n\n    if (offsetParent === getWindow(popper)) {\n      offsetParent = getDocumentElement(popper);\n\n      if (\n        getComputedStyle(offsetParent).position !== 'static' &&\n        position === 'absolute'\n      ) {\n        heightProp = 'scrollHeight';\n        widthProp = 'scrollWidth';\n      }\n    }\n\n    // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it\n    offsetParent = (offsetParent: Element);\n\n    if (\n      placement === top ||\n      ((placement === left || placement === right) && variation === end)\n    ) {\n      sideY = bottom;\n      const offsetY =\n        isFixed && win.visualViewport\n          ? win.visualViewport.height\n          : // $FlowFixMe[prop-missing]\n            offsetParent[heightProp];\n      y -= offsetY - popperRect.height;\n      y *= gpuAcceleration ? 1 : -1;\n    }\n\n    if (\n      placement === left ||\n      ((placement === top || placement === bottom) && variation === end)\n    ) {\n      sideX = right;\n      const offsetX =\n        isFixed && win.visualViewport\n          ? win.visualViewport.width\n          : // $FlowFixMe[prop-missing]\n            offsetParent[widthProp];\n      x -= offsetX - popperRect.width;\n      x *= gpuAcceleration ? 1 : -1;\n    }\n  }\n\n  const commonStyles = {\n    position,\n    ...(adaptive && unsetSides),\n  };\n\n  if (gpuAcceleration) {\n    return {\n      ...commonStyles,\n      [sideY]: hasY ? '0' : '',\n      [sideX]: hasX ? '0' : '',\n      // Layer acceleration can disable subpixel rendering which causes slightly\n      // blurry text on low PPI displays, so we want to use 2D transforms\n      // instead\n      transform:\n        (win.devicePixelRatio || 1) <= 1\n          ? `translate(${x}px, ${y}px)`\n          : `translate3d(${x}px, ${y}px, 0)`,\n    };\n  }\n\n  return {\n    ...commonStyles,\n    [sideY]: hasY ? `${y}px` : '',\n    [sideX]: hasX ? `${x}px` : '',\n    transform: '',\n  };\n}\n\nfunction computeStyles({ state, options }: ModifierArguments<Options>) {\n  const {\n    gpuAcceleration = true,\n    adaptive = true,\n    // defaults to use builtin `roundOffsetsByDPR`\n    roundOffsets = true,\n  } = options;\n\n  if (__DEV__) {\n    const transitionProperty =\n      getComputedStyle(state.elements.popper).transitionProperty || '';\n\n    if (\n      adaptive &&\n      ['transform', 'top', 'right', 'bottom', 'left'].some(\n        (property) => transitionProperty.indexOf(property) >= 0\n      )\n    ) {\n      console.warn(\n        [\n          'Popper: Detected CSS transitions on at least one of the following',\n          'CSS properties: \"transform\", \"top\", \"right\", \"bottom\", \"left\".',\n          '\\n\\n',\n          'Disable the \"computeStyles\" modifier\\'s `adaptive` option to allow',\n          'for smooth transitions, or remove these properties from the CSS',\n          'transition declaration on the popper element if only transitioning',\n          'opacity or background-color for example.',\n          '\\n\\n',\n          'We recommend using the popper element as a wrapper around an inner',\n          'element that can have any CSS property transitioned for animations.',\n        ].join(' ')\n      );\n    }\n  }\n\n  const commonStyles = {\n    placement: getBasePlacement(state.placement),\n    variation: getVariation(state.placement),\n    popper: state.elements.popper,\n    popperRect: state.rects.popper,\n    gpuAcceleration,\n    isFixed: state.options.strategy === 'fixed',\n  };\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.styles.popper = {\n      ...state.styles.popper,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.popperOffsets,\n        position: state.options.strategy,\n        adaptive,\n        roundOffsets,\n      }),\n    };\n  }\n\n  if (state.modifiersData.arrow != null) {\n    state.styles.arrow = {\n      ...state.styles.arrow,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.arrow,\n        position: 'absolute',\n        adaptive: false,\n        roundOffsets,\n      }),\n    };\n  }\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-placement': state.placement,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ComputeStylesModifier = Modifier<'computeStyles', Options>;\nexport default ({\n  name: 'computeStyles',\n  enabled: true,\n  phase: 'beforeWrite',\n  fn: computeStyles,\n  data: {},\n}: ComputeStylesModifier);\n","// @flow\nimport type { Modifier, ModifierArguments } from '../types';\nimport getNodeName from '../dom-utils/getNodeName';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// This modifier takes the styles prepared by the `computeStyles` modifier\n// and applies them to the HTMLElements such as popper and arrow\n\nfunction applyStyles({ state }: ModifierArguments<{||}>) {\n  Object.keys(state.elements).forEach((name) => {\n    const style = state.styles[name] || {};\n\n    const attributes = state.attributes[name] || {};\n    const element = state.elements[name];\n\n    // arrow is optional + virtual elements\n    if (!isHTMLElement(element) || !getNodeName(element)) {\n      return;\n    }\n\n    // Flow doesn't support to extend this property, but it's the most\n    // effective way to apply styles to an HTMLElement\n    // $FlowFixMe[cannot-write]\n    Object.assign(element.style, style);\n\n    Object.keys(attributes).forEach((name) => {\n      const value = attributes[name];\n      if (value === false) {\n        element.removeAttribute(name);\n      } else {\n        element.setAttribute(name, value === true ? '' : value);\n      }\n    });\n  });\n}\n\nfunction effect({ state }: ModifierArguments<{||}>) {\n  const initialStyles = {\n    popper: {\n      position: state.options.strategy,\n      left: '0',\n      top: '0',\n      margin: '0',\n    },\n    arrow: {\n      position: 'absolute',\n    },\n    reference: {},\n  };\n\n  Object.assign(state.elements.popper.style, initialStyles.popper);\n  state.styles = initialStyles;\n\n  if (state.elements.arrow) {\n    Object.assign(state.elements.arrow.style, initialStyles.arrow);\n  }\n\n  return () => {\n    Object.keys(state.elements).forEach((name) => {\n      const element = state.elements[name];\n      const attributes = state.attributes[name] || {};\n\n      const styleProperties = Object.keys(\n        state.styles.hasOwnProperty(name)\n          ? state.styles[name]\n          : initialStyles[name]\n      );\n\n      // Set all values to an empty string to unset them\n      const style = styleProperties.reduce((style, property) => {\n        style[property] = '';\n        return style;\n      }, {});\n\n      // arrow is optional + virtual elements\n      if (!isHTMLElement(element) || !getNodeName(element)) {\n        return;\n      }\n\n      Object.assign(element.style, style);\n\n      Object.keys(attributes).forEach((attribute) => {\n        element.removeAttribute(attribute);\n      });\n    });\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ApplyStylesModifier = Modifier<'applyStyles', {||}>;\nexport default ({\n  name: 'applyStyles',\n  enabled: true,\n  phase: 'write',\n  fn: applyStyles,\n  effect,\n  requires: ['computeStyles'],\n}: ApplyStylesModifier);\n","// @flow\nimport type { Placement } from '../enums';\nimport type { ModifierArguments, Modifier, Rect, Offsets } from '../types';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport { top, left, right, placements } from '../enums';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type OffsetsFunction = ({\n  popper: Rect,\n  reference: Rect,\n  placement: Placement,\n}) => [?number, ?number];\n\ntype Offset = OffsetsFunction | [?number, ?number];\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  offset: Offset,\n};\n\nexport function distanceAndSkiddingToXY(\n  placement: Placement,\n  rects: { popper: Rect, reference: Rect },\n  offset: Offset\n): Offsets {\n  const basePlacement = getBasePlacement(placement);\n  const invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;\n\n  let [skidding, distance] =\n    typeof offset === 'function'\n      ? offset({\n          ...rects,\n          placement,\n        })\n      : offset;\n\n  skidding = skidding || 0;\n  distance = (distance || 0) * invertDistance;\n\n  return [left, right].indexOf(basePlacement) >= 0\n    ? { x: distance, y: skidding }\n    : { x: skidding, y: distance };\n}\n\nfunction offset({ state, options, name }: ModifierArguments<Options>) {\n  const { offset = [0, 0] } = options;\n\n  const data = placements.reduce((acc, placement) => {\n    acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);\n    return acc;\n  }, {});\n\n  const { x, y } = data[state.placement];\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.modifiersData.popperOffsets.x += x;\n    state.modifiersData.popperOffsets.y += y;\n  }\n\n  state.modifiersData[name] = data;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type OffsetModifier = Modifier<'offset', Options>;\nexport default ({\n  name: 'offset',\n  enabled: true,\n  phase: 'main',\n  requires: ['popperOffsets'],\n  fn: offset,\n}: OffsetModifier);\n","// @flow\nimport type { Placement } from '../enums';\n\nconst hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n\nexport default function getOppositePlacement(placement: Placement): Placement {\n  return (placement.replace(\n    /left|right|bottom|top/g,\n    matched => hash[matched]\n  ): any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nconst hash = { start: 'end', end: 'start' };\n\nexport default function getOppositeVariationPlacement(\n  placement: Placement\n): Placement {\n  return (placement.replace(/start|end/g, matched => hash[matched]): any);\n}\n","// @flow\nimport type { State, Padding } from '../types';\nimport type {\n  Placement,\n  ComputedPlacement,\n  Boundary,\n  RootBoundary,\n} from '../enums';\nimport getVariation from './getVariation';\nimport {\n  variationPlacements,\n  basePlacements,\n  placements as allPlacements,\n} from '../enums';\nimport detectOverflow from './detectOverflow';\nimport getBasePlacement from './getBasePlacement';\n\ntype Options = {\n  placement: Placement,\n  padding: Padding,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  flipVariations: boolean,\n  allowedAutoPlacements?: Array<Placement>,\n};\n\ntype OverflowsMap = { [ComputedPlacement]: number };\n\nexport default function computeAutoPlacement(\n  state: $Shape<State>,\n  options: Options = {}\n): Array<ComputedPlacement> {\n  const {\n    placement,\n    boundary,\n    rootBoundary,\n    padding,\n    flipVariations,\n    allowedAutoPlacements = allPlacements,\n  } = options;\n\n  const variation = getVariation(placement);\n\n  const placements = variation\n    ? flipVariations\n      ? variationPlacements\n      : variationPlacements.filter(\n          (placement) => getVariation(placement) === variation\n        )\n    : basePlacements;\n\n  let allowedPlacements = placements.filter(\n    (placement) => allowedAutoPlacements.indexOf(placement) >= 0\n  );\n\n  if (allowedPlacements.length === 0) {\n    allowedPlacements = placements;\n\n    if (__DEV__) {\n      console.error(\n        [\n          'Popper: The `allowedAutoPlacements` option did not allow any',\n          'placements. Ensure the `placement` option matches the variation',\n          'of the allowed placements.',\n          'For example, \"auto\" cannot be used to allow \"bottom-start\".',\n          'Use \"auto-start\" instead.',\n        ].join(' ')\n      );\n    }\n  }\n\n  // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...\n  const overflows: OverflowsMap = allowedPlacements.reduce((acc, placement) => {\n    acc[placement] = detectOverflow(state, {\n      placement,\n      boundary,\n      rootBoundary,\n      padding,\n    })[getBasePlacement(placement)];\n\n    return acc;\n  }, {});\n\n  return Object.keys(overflows).sort((a, b) => overflows[a] - overflows[b]);\n}\n","// @flow\nimport type { Placement, Boundary, RootBoundary } from '../enums';\nimport type { ModifierArguments, Modifier, Padding } from '../types';\nimport getOppositePlacement from '../utils/getOppositePlacement';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getOppositeVariationPlacement from '../utils/getOppositeVariationPlacement';\nimport detectOverflow from '../utils/detectOverflow';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\nimport { bottom, top, start, right, left, auto } from '../enums';\nimport getVariation from '../utils/getVariation';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  mainAxis: boolean,\n  altAxis: boolean,\n  fallbackPlacements: Array<Placement>,\n  padding: Padding,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  altBoundary: boolean,\n  flipVariations: boolean,\n  allowedAutoPlacements: Array<Placement>,\n};\n\nfunction getExpandedFallbackPlacements(placement: Placement): Array<Placement> {\n  if (getBasePlacement(placement) === auto) {\n    return [];\n  }\n\n  const oppositePlacement = getOppositePlacement(placement);\n\n  return [\n    getOppositeVariationPlacement(placement),\n    oppositePlacement,\n    getOppositeVariationPlacement(oppositePlacement),\n  ];\n}\n\nfunction flip({ state, options, name }: ModifierArguments<Options>) {\n  if (state.modifiersData[name]._skip) {\n    return;\n  }\n\n  const {\n    mainAxis: checkMainAxis = true,\n    altAxis: checkAltAxis = true,\n    fallbackPlacements: specifiedFallbackPlacements,\n    padding,\n    boundary,\n    rootBoundary,\n    altBoundary,\n    flipVariations = true,\n    allowedAutoPlacements,\n  } = options;\n\n  const preferredPlacement = state.options.placement;\n  const basePlacement = getBasePlacement(preferredPlacement);\n  const isBasePlacement = basePlacement === preferredPlacement;\n\n  const fallbackPlacements =\n    specifiedFallbackPlacements ||\n    (isBasePlacement || !flipVariations\n      ? [getOppositePlacement(preferredPlacement)]\n      : getExpandedFallbackPlacements(preferredPlacement));\n\n  const placements = [preferredPlacement, ...fallbackPlacements].reduce(\n    (acc, placement) => {\n      return acc.concat(\n        getBasePlacement(placement) === auto\n          ? computeAutoPlacement(state, {\n              placement,\n              boundary,\n              rootBoundary,\n              padding,\n              flipVariations,\n              allowedAutoPlacements,\n            })\n          : placement\n      );\n    },\n    []\n  );\n\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n\n  const checksMap = new Map();\n  let makeFallbackChecks = true;\n  let firstFittingPlacement = placements[0];\n\n  for (let i = 0; i < placements.length; i++) {\n    const placement = placements[i];\n    const basePlacement = getBasePlacement(placement);\n    const isStartVariation = getVariation(placement) === start;\n    const isVertical = [top, bottom].indexOf(basePlacement) >= 0;\n    const len = isVertical ? 'width' : 'height';\n\n    const overflow = detectOverflow(state, {\n      placement,\n      boundary,\n      rootBoundary,\n      altBoundary,\n      padding,\n    });\n\n    let mainVariationSide: any = isVertical\n      ? isStartVariation\n        ? right\n        : left\n      : isStartVariation\n      ? bottom\n      : top;\n\n    if (referenceRect[len] > popperRect[len]) {\n      mainVariationSide = getOppositePlacement(mainVariationSide);\n    }\n\n    const altVariationSide: any = getOppositePlacement(mainVariationSide);\n\n    const checks = [];\n\n    if (checkMainAxis) {\n      checks.push(overflow[basePlacement] <= 0);\n    }\n\n    if (checkAltAxis) {\n      checks.push(\n        overflow[mainVariationSide] <= 0,\n        overflow[altVariationSide] <= 0\n      );\n    }\n\n    if (checks.every((check) => check)) {\n      firstFittingPlacement = placement;\n      makeFallbackChecks = false;\n      break;\n    }\n\n    checksMap.set(placement, checks);\n  }\n\n  if (makeFallbackChecks) {\n    // `2` may be desired in some cases – research later\n    const numberOfChecks = flipVariations ? 3 : 1;\n\n    for (let i = numberOfChecks; i > 0; i--) {\n      const fittingPlacement = placements.find((placement) => {\n        const checks = checksMap.get(placement);\n        if (checks) {\n          return checks.slice(0, i).every((check) => check);\n        }\n      });\n\n      if (fittingPlacement) {\n        firstFittingPlacement = fittingPlacement;\n        break;\n      }\n    }\n  }\n\n  if (state.placement !== firstFittingPlacement) {\n    state.modifiersData[name]._skip = true;\n    state.placement = firstFittingPlacement;\n    state.reset = true;\n  }\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type FlipModifier = Modifier<'flip', Options>;\nexport default ({\n  name: 'flip',\n  enabled: true,\n  phase: 'main',\n  fn: flip,\n  requiresIfExists: ['offset'],\n  data: { _skip: false },\n}: FlipModifier);\n","// @flow\n\nexport default function getAltAxis(axis: 'x' | 'y'): 'x' | 'y' {\n  return axis === 'x' ? 'y' : 'x';\n}\n","// @flow\nimport { max as mathMax, min as mathMin } from './math';\n\nexport function within(min: number, value: number, max: number): number {\n  return mathMax(min, mathMin(value, max));\n}\n\nexport function withinMaxClamp(min: number, value: number, max: number) {\n  const v = within(min, value, max);\n  return v > max ? max : v;\n}\n","// @flow\nimport { top, left, right, bottom, start } from '../enums';\nimport type { Placement, Boundary, RootBoundary } from '../enums';\nimport type { Rect, ModifierArguments, Modifier, Padding } from '../types';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';\nimport getAltAxis from '../utils/getAltAxis';\nimport { within, withinMaxClamp } from '../utils/within';\nimport getLayoutRect from '../dom-utils/getLayoutRect';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport detectOverflow from '../utils/detectOverflow';\nimport getVariation from '../utils/getVariation';\nimport getFreshSideObject from '../utils/getFreshSideObject';\nimport { min as mathMin, max as mathMax } from '../utils/math';\n\ntype TetherOffset =\n  | (({\n      popper: Rect,\n      reference: Rect,\n      placement: Placement,\n    }) => number | { mainAxis: number, altAxis: number })\n  | number\n  | { mainAxis: number, altAxis: number };\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  /* Prevents boundaries overflow on the main axis */\n  mainAxis: boolean,\n  /* Prevents boundaries overflow on the alternate axis */\n  altAxis: boolean,\n  /* The area to check the popper is overflowing in */\n  boundary: Boundary,\n  /* If the popper is not overflowing the main area, fallback to this one */\n  rootBoundary: RootBoundary,\n  /* Use the reference's \"clippingParents\" boundary context */\n  altBoundary: boolean,\n  /**\n   * Allows the popper to overflow from its boundaries to keep it near its\n   * reference element\n   */\n  tether: boolean,\n  /* Offsets when the `tether` option should activate */\n  tetherOffset: TetherOffset,\n  /* Sets a padding to the provided boundary */\n  padding: Padding,\n};\n\nfunction preventOverflow({ state, options, name }: ModifierArguments<Options>) {\n  const {\n    mainAxis: checkMainAxis = true,\n    altAxis: checkAltAxis = false,\n    boundary,\n    rootBoundary,\n    altBoundary,\n    padding,\n    tether = true,\n    tetherOffset = 0,\n  } = options;\n\n  const overflow = detectOverflow(state, {\n    boundary,\n    rootBoundary,\n    padding,\n    altBoundary,\n  });\n  const basePlacement = getBasePlacement(state.placement);\n  const variation = getVariation(state.placement);\n  const isBasePlacement = !variation;\n  const mainAxis = getMainAxisFromPlacement(basePlacement);\n  const altAxis = getAltAxis(mainAxis);\n  const popperOffsets = state.modifiersData.popperOffsets;\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n  const tetherOffsetValue =\n    typeof tetherOffset === 'function'\n      ? tetherOffset({\n          ...state.rects,\n          placement: state.placement,\n        })\n      : tetherOffset;\n  const normalizedTetherOffsetValue =\n    typeof tetherOffsetValue === 'number'\n      ? { mainAxis: tetherOffsetValue, altAxis: tetherOffsetValue }\n      : { mainAxis: 0, altAxis: 0, ...tetherOffsetValue };\n  const offsetModifierState = state.modifiersData.offset\n    ? state.modifiersData.offset[state.placement]\n    : null;\n\n  const data = { x: 0, y: 0 };\n\n  if (!popperOffsets) {\n    return;\n  }\n\n  if (checkMainAxis) {\n    const mainSide = mainAxis === 'y' ? top : left;\n    const altSide = mainAxis === 'y' ? bottom : right;\n    const len = mainAxis === 'y' ? 'height' : 'width';\n    const offset = popperOffsets[mainAxis];\n\n    const min = offset + overflow[mainSide];\n    const max = offset - overflow[altSide];\n\n    const additive = tether ? -popperRect[len] / 2 : 0;\n\n    const minLen = variation === start ? referenceRect[len] : popperRect[len];\n    const maxLen = variation === start ? -popperRect[len] : -referenceRect[len];\n\n    // We need to include the arrow in the calculation so the arrow doesn't go\n    // outside the reference bounds\n    const arrowElement = state.elements.arrow;\n    const arrowRect =\n      tether && arrowElement\n        ? getLayoutRect(arrowElement)\n        : { width: 0, height: 0 };\n    const arrowPaddingObject = state.modifiersData['arrow#persistent']\n      ? state.modifiersData['arrow#persistent'].padding\n      : getFreshSideObject();\n    const arrowPaddingMin = arrowPaddingObject[mainSide];\n    const arrowPaddingMax = arrowPaddingObject[altSide];\n\n    // If the reference length is smaller than the arrow length, we don't want\n    // to include its full size in the calculation. If the reference is small\n    // and near the edge of a boundary, the popper can overflow even if the\n    // reference is not overflowing as well (e.g. virtual elements with no\n    // width or height)\n    const arrowLen = within(0, referenceRect[len], arrowRect[len]);\n\n    const minOffset = isBasePlacement\n      ? referenceRect[len] / 2 -\n        additive -\n        arrowLen -\n        arrowPaddingMin -\n        normalizedTetherOffsetValue.mainAxis\n      : minLen -\n        arrowLen -\n        arrowPaddingMin -\n        normalizedTetherOffsetValue.mainAxis;\n    const maxOffset = isBasePlacement\n      ? -referenceRect[len] / 2 +\n        additive +\n        arrowLen +\n        arrowPaddingMax +\n        normalizedTetherOffsetValue.mainAxis\n      : maxLen +\n        arrowLen +\n        arrowPaddingMax +\n        normalizedTetherOffsetValue.mainAxis;\n\n    const arrowOffsetParent =\n      state.elements.arrow && getOffsetParent(state.elements.arrow);\n    const clientOffset = arrowOffsetParent\n      ? mainAxis === 'y'\n        ? arrowOffsetParent.clientTop || 0\n        : arrowOffsetParent.clientLeft || 0\n      : 0;\n\n    const offsetModifierValue = offsetModifierState?.[mainAxis] ?? 0;\n    const tetherMin = offset + minOffset - offsetModifierValue - clientOffset;\n    const tetherMax = offset + maxOffset - offsetModifierValue;\n\n    const preventedOffset = within(\n      tether ? mathMin(min, tetherMin) : min,\n      offset,\n      tether ? mathMax(max, tetherMax) : max\n    );\n\n    popperOffsets[mainAxis] = preventedOffset;\n    data[mainAxis] = preventedOffset - offset;\n  }\n\n  if (checkAltAxis) {\n    const mainSide = mainAxis === 'x' ? top : left;\n    const altSide = mainAxis === 'x' ? bottom : right;\n    const offset = popperOffsets[altAxis];\n\n    const len = altAxis === 'y' ? 'height' : 'width';\n\n    const min = offset + overflow[mainSide];\n    const max = offset - overflow[altSide];\n\n    const isOriginSide = [top, left].indexOf(basePlacement) !== -1;\n\n    const offsetModifierValue = offsetModifierState?.[altAxis] ?? 0;\n    const tetherMin = isOriginSide\n      ? min\n      : offset -\n        referenceRect[len] -\n        popperRect[len] -\n        offsetModifierValue +\n        normalizedTetherOffsetValue.altAxis;\n    const tetherMax = isOriginSide\n      ? offset +\n        referenceRect[len] +\n        popperRect[len] -\n        offsetModifierValue -\n        normalizedTetherOffsetValue.altAxis\n      : max;\n\n    const preventedOffset =\n      tether && isOriginSide\n        ? withinMaxClamp(tetherMin, offset, tetherMax)\n        : within(tether ? tetherMin : min, offset, tether ? tetherMax : max);\n\n    popperOffsets[altAxis] = preventedOffset;\n    data[altAxis] = preventedOffset - offset;\n  }\n\n  state.modifiersData[name] = data;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PreventOverflowModifier = Modifier<'preventOverflow', Options>;\nexport default ({\n  name: 'preventOverflow',\n  enabled: true,\n  phase: 'main',\n  fn: preventOverflow,\n  requiresIfExists: ['offset'],\n}: PreventOverflowModifier);\n","// @flow\nimport type { Modifier, ModifierArguments, Padding, Rect } from '../types';\nimport type { Placement } from '../enums';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getLayoutRect from '../dom-utils/getLayoutRect';\nimport contains from '../dom-utils/contains';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';\nimport { within } from '../utils/within';\nimport mergePaddingObject from '../utils/mergePaddingObject';\nimport expandToHashMap from '../utils/expandToHashMap';\nimport { left, right, basePlacements, top, bottom } from '../enums';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  element: HTMLElement | string | null,\n  padding:\n    | Padding\n    | (({|\n        popper: Rect,\n        reference: Rect,\n        placement: Placement,\n      |}) => Padding),\n};\n\nconst toPaddingObject = (padding, state) => {\n  padding =\n    typeof padding === 'function'\n      ? padding({ ...state.rects, placement: state.placement })\n      : padding;\n\n  return mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n};\n\nfunction arrow({ state, name, options }: ModifierArguments<Options>) {\n  const arrowElement = state.elements.arrow;\n  const popperOffsets = state.modifiersData.popperOffsets;\n  const basePlacement = getBasePlacement(state.placement);\n  const axis = getMainAxisFromPlacement(basePlacement);\n  const isVertical = [left, right].indexOf(basePlacement) >= 0;\n  const len = isVertical ? 'height' : 'width';\n\n  if (!arrowElement || !popperOffsets) {\n    return;\n  }\n\n  const paddingObject = toPaddingObject(options.padding, state);\n  const arrowRect = getLayoutRect(arrowElement);\n  const minProp = axis === 'y' ? top : left;\n  const maxProp = axis === 'y' ? bottom : right;\n\n  const endDiff =\n    state.rects.reference[len] +\n    state.rects.reference[axis] -\n    popperOffsets[axis] -\n    state.rects.popper[len];\n  const startDiff = popperOffsets[axis] - state.rects.reference[axis];\n\n  const arrowOffsetParent = getOffsetParent(arrowElement);\n  const clientSize = arrowOffsetParent\n    ? axis === 'y'\n      ? arrowOffsetParent.clientHeight || 0\n      : arrowOffsetParent.clientWidth || 0\n    : 0;\n\n  const centerToReference = endDiff / 2 - startDiff / 2;\n\n  // Make sure the arrow doesn't overflow the popper if the center point is\n  // outside of the popper bounds\n  const min = paddingObject[minProp];\n  const max = clientSize - arrowRect[len] - paddingObject[maxProp];\n  const center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;\n  const offset = within(min, center, max);\n\n  // Prevents breaking syntax highlighting...\n  const axisProp: string = axis;\n  state.modifiersData[name] = {\n    [axisProp]: offset,\n    centerOffset: offset - center,\n  };\n}\n\nfunction effect({ state, options }: ModifierArguments<Options>) {\n  let { element: arrowElement = '[data-popper-arrow]' } = options;\n\n  if (arrowElement == null) {\n    return;\n  }\n\n  // CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = state.elements.popper.querySelector(arrowElement);\n\n    if (!arrowElement) {\n      return;\n    }\n  }\n\n  if (__DEV__) {\n    if (!isHTMLElement(arrowElement)) {\n      console.error(\n        [\n          'Popper: \"arrow\" element must be an HTMLElement (not an SVGElement).',\n          'To use an SVG arrow, wrap it in an HTMLElement that will be used as',\n          'the arrow.',\n        ].join(' ')\n      );\n    }\n  }\n\n  if (!contains(state.elements.popper, arrowElement)) {\n    if (__DEV__) {\n      console.error(\n        [\n          'Popper: \"arrow\" modifier\\'s `element` must be a child of the popper',\n          'element.',\n        ].join(' ')\n      );\n    }\n\n    return;\n  }\n\n  state.elements.arrow = arrowElement;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ArrowModifier = Modifier<'arrow', Options>;\nexport default ({\n  name: 'arrow',\n  enabled: true,\n  phase: 'main',\n  fn: arrow,\n  effect,\n  requires: ['popperOffsets'],\n  requiresIfExists: ['preventOverflow'],\n}: ArrowModifier);\n","// @flow\nimport type {\n  ModifierArguments,\n  Modifier,\n  Rect,\n  SideObject,\n  Offsets,\n} from '../types';\nimport { top, bottom, left, right } from '../enums';\nimport detectOverflow from '../utils/detectOverflow';\n\nfunction getSideOffsets(\n  overflow: SideObject,\n  rect: Rect,\n  preventedOffsets: Offsets = { x: 0, y: 0 }\n): SideObject {\n  return {\n    top: overflow.top - rect.height - preventedOffsets.y,\n    right: overflow.right - rect.width + preventedOffsets.x,\n    bottom: overflow.bottom - rect.height + preventedOffsets.y,\n    left: overflow.left - rect.width - preventedOffsets.x,\n  };\n}\n\nfunction isAnySideFullyClipped(overflow: SideObject): boolean {\n  return [top, right, bottom, left].some((side) => overflow[side] >= 0);\n}\n\nfunction hide({ state, name }: ModifierArguments<{||}>) {\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n  const preventedOffsets = state.modifiersData.preventOverflow;\n\n  const referenceOverflow = detectOverflow(state, {\n    elementContext: 'reference',\n  });\n  const popperAltOverflow = detectOverflow(state, {\n    altBoundary: true,\n  });\n\n  const referenceClippingOffsets = getSideOffsets(\n    referenceOverflow,\n    referenceRect\n  );\n  const popperEscapeOffsets = getSideOffsets(\n    popperAltOverflow,\n    popperRect,\n    preventedOffsets\n  );\n\n  const isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);\n  const hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);\n\n  state.modifiersData[name] = {\n    referenceClippingOffsets,\n    popperEscapeOffsets,\n    isReferenceHidden,\n    hasPopperEscaped,\n  };\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-reference-hidden': isReferenceHidden,\n    'data-popper-escaped': hasPopperEscaped,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type HideModifier = Modifier<'hide', {||}>;\nexport default ({\n  name: 'hide',\n  enabled: true,\n  phase: 'main',\n  requiresIfExists: ['preventOverflow'],\n  fn: hide,\n}: HideModifier);\n","// @flow\nimport { popperGenerator, detectOverflow } from './createPopper';\n\nimport eventListeners from './modifiers/eventListeners';\nimport popperOffsets from './modifiers/popperOffsets';\nimport computeStyles from './modifiers/computeStyles';\nimport applyStyles from './modifiers/applyStyles';\n\nexport type * from './types';\n\nconst defaultModifiers = [\n  eventListeners,\n  popperOffsets,\n  computeStyles,\n  applyStyles,\n];\n\nconst createPopper = popperGenerator({ defaultModifiers });\n\n// eslint-disable-next-line import/no-unused-modules\nexport { createPopper, popperGenerator, defaultModifiers, detectOverflow };\n","// @flow\nimport { popperGenerator, detectOverflow } from './createPopper';\n\nimport eventListeners from './modifiers/eventListeners';\nimport popperOffsets from './modifiers/popperOffsets';\nimport computeStyles from './modifiers/computeStyles';\nimport applyStyles from './modifiers/applyStyles';\nimport offset from './modifiers/offset';\nimport flip from './modifiers/flip';\nimport preventOverflow from './modifiers/preventOverflow';\nimport arrow from './modifiers/arrow';\nimport hide from './modifiers/hide';\n\nexport type * from './types';\n\nconst 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\ No newline at end of file
diff --git a/popperjs/package/dist/esm/createPopper.js b/popperjs/package/dist/esm/createPopper.js
new file mode 100644
index 0000000..851f807
--- /dev/null
+++ b/popperjs/package/dist/esm/createPopper.js
@@ -0,0 +1,259 @@
+import getCompositeRect from "./dom-utils/getCompositeRect.js";
+import getLayoutRect from "./dom-utils/getLayoutRect.js";
+import listScrollParents from "./dom-utils/listScrollParents.js";
+import getOffsetParent from "./dom-utils/getOffsetParent.js";
+import getComputedStyle from "./dom-utils/getComputedStyle.js";
+import orderModifiers from "./utils/orderModifiers.js";
+import debounce from "./utils/debounce.js";
+import validateModifiers from "./utils/validateModifiers.js";
+import uniqueBy from "./utils/uniqueBy.js";
+import getBasePlacement from "./utils/getBasePlacement.js";
+import mergeByName from "./utils/mergeByName.js";
+import detectOverflow from "./utils/detectOverflow.js";
+import { isElement } from "./dom-utils/instanceOf.js";
+import { auto } from "./enums.js";
+var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+var DEFAULT_OPTIONS = {
+  placement: 'bottom',
+  modifiers: [],
+  strategy: 'absolute'
+};
+
+function areValidElements() {
+  for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+    args[_key] = arguments[_key];
+  }
+
+  return !args.some(function (element) {
+    return !(element && typeof element.getBoundingClientRect === 'function');
+  });
+}
+
+export function popperGenerator(generatorOptions) {
+  if (generatorOptions === void 0) {
+    generatorOptions = {};
+  }
+
+  var _generatorOptions = generatorOptions,
+      _generatorOptions$def = _generatorOptions.defaultModifiers,
+      defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+      _generatorOptions$def2 = _generatorOptions.defaultOptions,
+      defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+  return function createPopper(reference, popper, options) {
+    if (options === void 0) {
+      options = defaultOptions;
+    }
+
+    var state = {
+      placement: 'bottom',
+      orderedModifiers: [],
+      options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+      modifiersData: {},
+      elements: {
+        reference: reference,
+        popper: popper
+      },
+      attributes: {},
+      styles: {}
+    };
+    var effectCleanupFns = [];
+    var isDestroyed = false;
+    var instance = {
+      state: state,
+      setOptions: function setOptions(setOptionsAction) {
+        var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+        cleanupModifierEffects();
+        state.options = Object.assign({}, defaultOptions, state.options, options);
+        state.scrollParents = {
+          reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+          popper: listScrollParents(popper)
+        }; // Orders the modifiers based on their dependencies and `phase`
+        // properties
+
+        var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+        state.orderedModifiers = orderedModifiers.filter(function (m) {
+          return m.enabled;
+        }); // Validate the provided modifiers so that the consumer will get warned
+        // if one of the modifiers is invalid for any reason
+
+        if (false) {
+          var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+            var name = _ref.name;
+            return name;
+          });
+          validateModifiers(modifiers);
+
+          if (getBasePlacement(state.options.placement) === auto) {
+            var flipModifier = state.orderedModifiers.find(function (_ref2) {
+              var name = _ref2.name;
+              return name === 'flip';
+            });
+
+            if (!flipModifier) {
+              console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+            }
+          }
+
+          var _getComputedStyle = getComputedStyle(popper),
+              marginTop = _getComputedStyle.marginTop,
+              marginRight = _getComputedStyle.marginRight,
+              marginBottom = _getComputedStyle.marginBottom,
+              marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+          // cause bugs with positioning, so we'll warn the consumer
+
+
+          if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+            return parseFloat(margin);
+          })) {
+            console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+          }
+        }
+
+        runModifierEffects();
+        return instance.update();
+      },
+      // Sync update – it will always be executed, even if not necessary. This
+      // is useful for low frequency updates where sync behavior simplifies the
+      // logic.
+      // For high frequency updates (e.g. `resize` and `scroll` events), always
+      // prefer the async Popper#update method
+      forceUpdate: function forceUpdate() {
+        if (isDestroyed) {
+          return;
+        }
+
+        var _state$elements = state.elements,
+            reference = _state$elements.reference,
+            popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+        // anymore
+
+        if (!areValidElements(reference, popper)) {
+          if (false) {
+            console.error(INVALID_ELEMENT_ERROR);
+          }
+
+          return;
+        } // Store the reference and popper rects to be read by modifiers
+
+
+        state.rects = {
+          reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+          popper: getLayoutRect(popper)
+        }; // Modifiers have the ability to reset the current update cycle. The
+        // most common use case for this is the `flip` modifier changing the
+        // placement, which then needs to re-run all the modifiers, because the
+        // logic was previously ran for the previous placement and is therefore
+        // stale/incorrect
+
+        state.reset = false;
+        state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+        // is filled with the initial data specified by the modifier. This means
+        // it doesn't persist and is fresh on each update.
+        // To ensure persistent data, use `${name}#persistent`
+
+        state.orderedModifiers.forEach(function (modifier) {
+          return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+        });
+        var __debug_loops__ = 0;
+
+        for (var index = 0; index < state.orderedModifiers.length; index++) {
+          if (false) {
+            __debug_loops__ += 1;
+
+            if (__debug_loops__ > 100) {
+              console.error(INFINITE_LOOP_ERROR);
+              break;
+            }
+          }
+
+          if (state.reset === true) {
+            state.reset = false;
+            index = -1;
+            continue;
+          }
+
+          var _state$orderedModifie = state.orderedModifiers[index],
+              fn = _state$orderedModifie.fn,
+              _state$orderedModifie2 = _state$orderedModifie.options,
+              _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+              name = _state$orderedModifie.name;
+
+          if (typeof fn === 'function') {
+            state = fn({
+              state: state,
+              options: _options,
+              name: name,
+              instance: instance
+            }) || state;
+          }
+        }
+      },
+      // Async and optimistically optimized update – it will not be executed if
+      // not necessary (debounced to run at most once-per-tick)
+      update: debounce(function () {
+        return new Promise(function (resolve) {
+          instance.forceUpdate();
+          resolve(state);
+        });
+      }),
+      destroy: function destroy() {
+        cleanupModifierEffects();
+        isDestroyed = true;
+      }
+    };
+
+    if (!areValidElements(reference, popper)) {
+      if (false) {
+        console.error(INVALID_ELEMENT_ERROR);
+      }
+
+      return instance;
+    }
+
+    instance.setOptions(options).then(function (state) {
+      if (!isDestroyed && options.onFirstUpdate) {
+        options.onFirstUpdate(state);
+      }
+    }); // Modifiers have the ability to execute arbitrary code before the first
+    // update cycle runs. They will be executed in the same order as the update
+    // cycle. This is useful when a modifier adds some persistent data that
+    // other modifiers need to use, but the modifier is run after the dependent
+    // one.
+
+    function runModifierEffects() {
+      state.orderedModifiers.forEach(function (_ref3) {
+        var name = _ref3.name,
+            _ref3$options = _ref3.options,
+            options = _ref3$options === void 0 ? {} : _ref3$options,
+            effect = _ref3.effect;
+
+        if (typeof effect === 'function') {
+          var cleanupFn = effect({
+            state: state,
+            name: name,
+            instance: instance,
+            options: options
+          });
+
+          var noopFn = function noopFn() {};
+
+          effectCleanupFns.push(cleanupFn || noopFn);
+        }
+      });
+    }
+
+    function cleanupModifierEffects() {
+      effectCleanupFns.forEach(function (fn) {
+        return fn();
+      });
+      effectCleanupFns = [];
+    }
+
+    return instance;
+  };
+}
+export var createPopper = /*#__PURE__*/popperGenerator(); // eslint-disable-next-line import/no-unused-modules
+
+export { detectOverflow };
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/contains.js b/popperjs/package/dist/esm/dom-utils/contains.js
new file mode 100644
index 0000000..2a53772
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/contains.js
@@ -0,0 +1,23 @@
+import { isShadowRoot } from "./instanceOf.js";
+export default function contains(parent, child) {
+  var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+  if (parent.contains(child)) {
+    return true;
+  } // then fallback to custom implementation with Shadow DOM support
+  else if (rootNode && isShadowRoot(rootNode)) {
+      var next = child;
+
+      do {
+        if (next && parent.isSameNode(next)) {
+          return true;
+        } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+        next = next.parentNode || next.host;
+      } while (next);
+    } // Give up, the result is false
+
+
+  return false;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getBoundingClientRect.js b/popperjs/package/dist/esm/dom-utils/getBoundingClientRect.js
new file mode 100644
index 0000000..22cc605
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getBoundingClientRect.js
@@ -0,0 +1,36 @@
+import { isHTMLElement } from "./instanceOf.js";
+import { round } from "../utils/math.js";
+export default function getBoundingClientRect(element, includeScale) {
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+
+  var rect = element.getBoundingClientRect();
+  var scaleX = 1;
+  var scaleY = 1;
+
+  if (isHTMLElement(element) && includeScale) {
+    var offsetHeight = element.offsetHeight;
+    var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+    // Fallback to 1 in case both values are `0`
+
+    if (offsetWidth > 0) {
+      scaleX = round(rect.width) / offsetWidth || 1;
+    }
+
+    if (offsetHeight > 0) {
+      scaleY = round(rect.height) / offsetHeight || 1;
+    }
+  }
+
+  return {
+    width: rect.width / scaleX,
+    height: rect.height / scaleY,
+    top: rect.top / scaleY,
+    right: rect.right / scaleX,
+    bottom: rect.bottom / scaleY,
+    left: rect.left / scaleX,
+    x: rect.left / scaleX,
+    y: rect.top / scaleY
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getClippingRect.js b/popperjs/package/dist/esm/dom-utils/getClippingRect.js
new file mode 100644
index 0000000..696c309
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getClippingRect.js
@@ -0,0 +1,70 @@
+import { viewport } from "../enums.js";
+import getViewportRect from "./getViewportRect.js";
+import getDocumentRect from "./getDocumentRect.js";
+import listScrollParents from "./listScrollParents.js";
+import getOffsetParent from "./getOffsetParent.js";
+import getDocumentElement from "./getDocumentElement.js";
+import getComputedStyle from "./getComputedStyle.js";
+import { isElement, isHTMLElement } from "./instanceOf.js";
+import getBoundingClientRect from "./getBoundingClientRect.js";
+import getParentNode from "./getParentNode.js";
+import contains from "./contains.js";
+import getNodeName from "./getNodeName.js";
+import rectToClientRect from "../utils/rectToClientRect.js";
+import { max, min } from "../utils/math.js";
+
+function getInnerBoundingClientRect(element) {
+  var rect = getBoundingClientRect(element);
+  rect.top = rect.top + element.clientTop;
+  rect.left = rect.left + element.clientLeft;
+  rect.bottom = rect.top + element.clientHeight;
+  rect.right = rect.left + element.clientWidth;
+  rect.width = element.clientWidth;
+  rect.height = element.clientHeight;
+  rect.x = rect.left;
+  rect.y = rect.top;
+  return rect;
+}
+
+function getClientRectFromMixedType(element, clippingParent) {
+  return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+} // A "clipping parent" is an overflowable container with the characteristic of
+// clipping (or hiding) overflowing elements with a position different from
+// `initial`
+
+
+function getClippingParents(element) {
+  var clippingParents = listScrollParents(getParentNode(element));
+  var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+  var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+  if (!isElement(clipperElement)) {
+    return [];
+  } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+  return clippingParents.filter(function (clippingParent) {
+    return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+  });
+} // Gets the maximum area that the element is visible in due to any number of
+// clipping parents
+
+
+export default function getClippingRect(element, boundary, rootBoundary) {
+  var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+  var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+  var firstClippingParent = clippingParents[0];
+  var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+    var rect = getClientRectFromMixedType(element, clippingParent);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromMixedType(element, firstClippingParent));
+  clippingRect.width = clippingRect.right - clippingRect.left;
+  clippingRect.height = clippingRect.bottom - clippingRect.top;
+  clippingRect.x = clippingRect.left;
+  clippingRect.y = clippingRect.top;
+  return clippingRect;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getCompositeRect.js b/popperjs/package/dist/esm/dom-utils/getCompositeRect.js
new file mode 100644
index 0000000..eaa5f84
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getCompositeRect.js
@@ -0,0 +1,58 @@
+import getBoundingClientRect from "./getBoundingClientRect.js";
+import getNodeScroll from "./getNodeScroll.js";
+import getNodeName from "./getNodeName.js";
+import { isHTMLElement } from "./instanceOf.js";
+import getWindowScrollBarX from "./getWindowScrollBarX.js";
+import getDocumentElement from "./getDocumentElement.js";
+import isScrollParent from "./isScrollParent.js";
+import { round } from "../utils/math.js";
+
+function isElementScaled(element) {
+  var rect = element.getBoundingClientRect();
+  var scaleX = round(rect.width) / element.offsetWidth || 1;
+  var scaleY = round(rect.height) / element.offsetHeight || 1;
+  return scaleX !== 1 || scaleY !== 1;
+} // Returns the composite rect of an element relative to its offsetParent.
+// Composite means it takes into account transforms as well as layout.
+
+
+export default function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+  if (isFixed === void 0) {
+    isFixed = false;
+  }
+
+  var isOffsetParentAnElement = isHTMLElement(offsetParent);
+  var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+  var documentElement = getDocumentElement(offsetParent);
+  var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+  var scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  var offsets = {
+    x: 0,
+    y: 0
+  };
+
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+    if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+    isScrollParent(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+
+    if (isHTMLElement(offsetParent)) {
+      offsets = getBoundingClientRect(offsetParent, true);
+      offsets.x += offsetParent.clientLeft;
+      offsets.y += offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getComputedStyle.js b/popperjs/package/dist/esm/dom-utils/getComputedStyle.js
new file mode 100644
index 0000000..08221de
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getComputedStyle.js
@@ -0,0 +1,4 @@
+import getWindow from "./getWindow.js";
+export default function getComputedStyle(element) {
+  return getWindow(element).getComputedStyle(element);
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getDocumentElement.js b/popperjs/package/dist/esm/dom-utils/getDocumentElement.js
new file mode 100644
index 0000000..c01240b
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getDocumentElement.js
@@ -0,0 +1,6 @@
+import { isElement } from "./instanceOf.js";
+export default function getDocumentElement(element) {
+  // $FlowFixMe[incompatible-return]: assume body is always available
+  return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+  element.document) || window.document).documentElement;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getDocumentRect.js b/popperjs/package/dist/esm/dom-utils/getDocumentRect.js
new file mode 100644
index 0000000..d24df8e
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getDocumentRect.js
@@ -0,0 +1,29 @@
+import getDocumentElement from "./getDocumentElement.js";
+import getComputedStyle from "./getComputedStyle.js";
+import getWindowScrollBarX from "./getWindowScrollBarX.js";
+import getWindowScroll from "./getWindowScroll.js";
+import { max } from "../utils/math.js"; // Gets the entire size of the scrollable document area, even extending outside
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+export default function getDocumentRect(element) {
+  var _element$ownerDocumen;
+
+  var html = getDocumentElement(element);
+  var winScroll = getWindowScroll(element);
+  var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+  var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+  var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+  var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+  var y = -winScroll.scrollTop;
+
+  if (getComputedStyle(body || html).direction === 'rtl') {
+    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x,
+    y: y
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getHTMLElementScroll.js b/popperjs/package/dist/esm/dom-utils/getHTMLElementScroll.js
new file mode 100644
index 0000000..d7f3600
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getHTMLElementScroll.js
@@ -0,0 +1,6 @@
+export default function getHTMLElementScroll(element) {
+  return {
+    scrollLeft: element.scrollLeft,
+    scrollTop: element.scrollTop
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getLayoutRect.js b/popperjs/package/dist/esm/dom-utils/getLayoutRect.js
new file mode 100644
index 0000000..c3b421e
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getLayoutRect.js
@@ -0,0 +1,25 @@
+import getBoundingClientRect from "./getBoundingClientRect.js"; // Returns the layout rect of an element relative to its offsetParent. Layout
+// means it doesn't take into account transforms.
+
+export default function getLayoutRect(element) {
+  var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+  // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+  var width = element.offsetWidth;
+  var height = element.offsetHeight;
+
+  if (Math.abs(clientRect.width - width) <= 1) {
+    width = clientRect.width;
+  }
+
+  if (Math.abs(clientRect.height - height) <= 1) {
+    height = clientRect.height;
+  }
+
+  return {
+    x: element.offsetLeft,
+    y: element.offsetTop,
+    width: width,
+    height: height
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getNodeName.js b/popperjs/package/dist/esm/dom-utils/getNodeName.js
new file mode 100644
index 0000000..393ae7a
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getNodeName.js
@@ -0,0 +1,3 @@
+export default function getNodeName(element) {
+  return element ? (element.nodeName || '').toLowerCase() : null;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getNodeScroll.js b/popperjs/package/dist/esm/dom-utils/getNodeScroll.js
new file mode 100644
index 0000000..afef366
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getNodeScroll.js
@@ -0,0 +1,11 @@
+import getWindowScroll from "./getWindowScroll.js";
+import getWindow from "./getWindow.js";
+import { isHTMLElement } from "./instanceOf.js";
+import getHTMLElementScroll from "./getHTMLElementScroll.js";
+export default function getNodeScroll(node) {
+  if (node === getWindow(node) || !isHTMLElement(node)) {
+    return getWindowScroll(node);
+  } else {
+    return getHTMLElementScroll(node);
+  }
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getOffsetParent.js b/popperjs/package/dist/esm/dom-utils/getOffsetParent.js
new file mode 100644
index 0000000..5300b0f
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getOffsetParent.js
@@ -0,0 +1,64 @@
+import getWindow from "./getWindow.js";
+import getNodeName from "./getNodeName.js";
+import getComputedStyle from "./getComputedStyle.js";
+import { isHTMLElement } from "./instanceOf.js";
+import isTableElement from "./isTableElement.js";
+import getParentNode from "./getParentNode.js";
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+  getComputedStyle(element).position === 'fixed') {
+    return null;
+  }
+
+  return element.offsetParent;
+} // `.offsetParent` reports `null` for fixed elements, while absolute elements
+// return the containing block
+
+
+function getContainingBlock(element) {
+  var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+  var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+  if (isIE && isHTMLElement(element)) {
+    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+    var elementCss = getComputedStyle(element);
+
+    if (elementCss.position === 'fixed') {
+      return null;
+    }
+  }
+
+  var currentNode = getParentNode(element);
+
+  while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+    var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+    // create a containing block.
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+    if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+      return currentNode;
+    } else {
+      currentNode = currentNode.parentNode;
+    }
+  }
+
+  return null;
+} // Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+
+
+export default function getOffsetParent(element) {
+  var window = getWindow(element);
+  var offsetParent = getTrueOffsetParent(element);
+
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+    return window;
+  }
+
+  return offsetParent || getContainingBlock(element) || window;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getParentNode.js b/popperjs/package/dist/esm/dom-utils/getParentNode.js
new file mode 100644
index 0000000..06d3e98
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getParentNode.js
@@ -0,0 +1,19 @@
+import getNodeName from "./getNodeName.js";
+import getDocumentElement from "./getDocumentElement.js";
+import { isShadowRoot } from "./instanceOf.js";
+export default function getParentNode(element) {
+  if (getNodeName(element) === 'html') {
+    return element;
+  }
+
+  return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+    // $FlowFixMe[incompatible-return]
+    // $FlowFixMe[prop-missing]
+    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+    element.parentNode || ( // DOM Element detected
+    isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+    // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+    getDocumentElement(element) // fallback
+
+  );
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getScrollParent.js b/popperjs/package/dist/esm/dom-utils/getScrollParent.js
new file mode 100644
index 0000000..a264c4b
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getScrollParent.js
@@ -0,0 +1,16 @@
+import getParentNode from "./getParentNode.js";
+import isScrollParent from "./isScrollParent.js";
+import getNodeName from "./getNodeName.js";
+import { isHTMLElement } from "./instanceOf.js";
+export default function getScrollParent(node) {
+  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return node.ownerDocument.body;
+  }
+
+  if (isHTMLElement(node) && isScrollParent(node)) {
+    return node;
+  }
+
+  return getScrollParent(getParentNode(node));
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getViewportRect.js b/popperjs/package/dist/esm/dom-utils/getViewportRect.js
new file mode 100644
index 0000000..8912df5
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getViewportRect.js
@@ -0,0 +1,40 @@
+import getWindow from "./getWindow.js";
+import getDocumentElement from "./getDocumentElement.js";
+import getWindowScrollBarX from "./getWindowScrollBarX.js";
+export default function getViewportRect(element) {
+  var win = getWindow(element);
+  var html = getDocumentElement(element);
+  var visualViewport = win.visualViewport;
+  var width = html.clientWidth;
+  var height = html.clientHeight;
+  var x = 0;
+  var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+  // can be obscured underneath it.
+  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+  // if it isn't open, so if this isn't available, the popper will be detected
+  // to overflow the bottom of the screen too early.
+
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+    // errors due to floating point numbers, so we need to check precision.
+    // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+    // Feature detection fails in mobile emulation mode in Chrome.
+    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+    // 0.001
+    // Fallback here: "Not Safari" userAgent
+
+    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x + getWindowScrollBarX(element),
+    y: y
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getWindow.js b/popperjs/package/dist/esm/dom-utils/getWindow.js
new file mode 100644
index 0000000..5df7a48
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getWindow.js
@@ -0,0 +1,12 @@
+export default function getWindow(node) {
+  if (node == null) {
+    return window;
+  }
+
+  if (node.toString() !== '[object Window]') {
+    var ownerDocument = node.ownerDocument;
+    return ownerDocument ? ownerDocument.defaultView || window : window;
+  }
+
+  return node;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getWindowScroll.js b/popperjs/package/dist/esm/dom-utils/getWindowScroll.js
new file mode 100644
index 0000000..61eb751
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getWindowScroll.js
@@ -0,0 +1,10 @@
+import getWindow from "./getWindow.js";
+export default function getWindowScroll(node) {
+  var win = getWindow(node);
+  var scrollLeft = win.pageXOffset;
+  var scrollTop = win.pageYOffset;
+  return {
+    scrollLeft: scrollLeft,
+    scrollTop: scrollTop
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/getWindowScrollBarX.js b/popperjs/package/dist/esm/dom-utils/getWindowScrollBarX.js
new file mode 100644
index 0000000..b650d94
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/getWindowScrollBarX.js
@@ -0,0 +1,13 @@
+import getBoundingClientRect from "./getBoundingClientRect.js";
+import getDocumentElement from "./getDocumentElement.js";
+import getWindowScroll from "./getWindowScroll.js";
+export default function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  // Popper 1 is broken in this case and never had a bug report so let's assume
+  // it's not an issue. I don't think anyone ever specifies width on <html>
+  // anyway.
+  // Browsers where the left scrollbar doesn't cause an issue report `0` for
+  // this (e.g. Edge 2019, IE11, Safari)
+  return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/instanceOf.js b/popperjs/package/dist/esm/dom-utils/instanceOf.js
new file mode 100644
index 0000000..ee51ea6
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/instanceOf.js
@@ -0,0 +1,23 @@
+import getWindow from "./getWindow.js";
+
+function isElement(node) {
+  var OwnElement = getWindow(node).Element;
+  return node instanceof OwnElement || node instanceof Element;
+}
+
+function isHTMLElement(node) {
+  var OwnElement = getWindow(node).HTMLElement;
+  return node instanceof OwnElement || node instanceof HTMLElement;
+}
+
+function isShadowRoot(node) {
+  // IE 11 has no ShadowRoot
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+
+  var OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+
+export { isElement, isHTMLElement, isShadowRoot };
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/isScrollParent.js b/popperjs/package/dist/esm/dom-utils/isScrollParent.js
new file mode 100644
index 0000000..9d6e18e
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/isScrollParent.js
@@ -0,0 +1,10 @@
+import getComputedStyle from "./getComputedStyle.js";
+export default function isScrollParent(element) {
+  // Firefox wants us to check `-x` and `-y` variations as well
+  var _getComputedStyle = getComputedStyle(element),
+      overflow = _getComputedStyle.overflow,
+      overflowX = _getComputedStyle.overflowX,
+      overflowY = _getComputedStyle.overflowY;
+
+  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/isTableElement.js b/popperjs/package/dist/esm/dom-utils/isTableElement.js
new file mode 100644
index 0000000..7c36c8a
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/isTableElement.js
@@ -0,0 +1,4 @@
+import getNodeName from "./getNodeName.js";
+export default function isTableElement(element) {
+  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/dom-utils/listScrollParents.js b/popperjs/package/dist/esm/dom-utils/listScrollParents.js
new file mode 100644
index 0000000..24e8bd2
--- /dev/null
+++ b/popperjs/package/dist/esm/dom-utils/listScrollParents.js
@@ -0,0 +1,26 @@
+import getScrollParent from "./getScrollParent.js";
+import getParentNode from "./getParentNode.js";
+import getWindow from "./getWindow.js";
+import isScrollParent from "./isScrollParent.js";
+/*
+given a DOM element, return the list of all scroll parents, up the list of ancesors
+until we get to the top window object. This list is what we attach scroll listeners
+to, because if any of these parent elements scroll, we'll need to re-calculate the
+reference element's position.
+*/
+
+export default function listScrollParents(element, list) {
+  var _element$ownerDocumen;
+
+  if (list === void 0) {
+    list = [];
+  }
+
+  var scrollParent = getScrollParent(element);
+  var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+  var win = getWindow(scrollParent);
+  var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+  var updatedList = list.concat(target);
+  return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+  updatedList.concat(listScrollParents(getParentNode(target)));
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/enums.js b/popperjs/package/dist/esm/enums.js
new file mode 100644
index 0000000..e3714f5
--- /dev/null
+++ b/popperjs/package/dist/esm/enums.js
@@ -0,0 +1,31 @@
+export var top = 'top';
+export var bottom = 'bottom';
+export var right = 'right';
+export var left = 'left';
+export var auto = 'auto';
+export var basePlacements = [top, bottom, right, left];
+export var start = 'start';
+export var end = 'end';
+export var clippingParents = 'clippingParents';
+export var viewport = 'viewport';
+export var popper = 'popper';
+export var reference = 'reference';
+export var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
+  return acc.concat([placement + "-" + start, placement + "-" + end]);
+}, []);
+export var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
+  return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
+}, []); // modifiers that need to read the DOM
+
+export var beforeRead = 'beforeRead';
+export var read = 'read';
+export var afterRead = 'afterRead'; // pure-logic modifiers
+
+export var beforeMain = 'beforeMain';
+export var main = 'main';
+export var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+export var beforeWrite = 'beforeWrite';
+export var write = 'write';
+export var afterWrite = 'afterWrite';
+export var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/index.js b/popperjs/package/dist/esm/index.js
new file mode 100644
index 0000000..c0c8b52
--- /dev/null
+++ b/popperjs/package/dist/esm/index.js
@@ -0,0 +1,8 @@
+export * from "./enums.js";
+export * from "./modifiers/index.js"; // eslint-disable-next-line import/no-unused-modules
+
+export { popperGenerator, detectOverflow, createPopper as createPopperBase } from "./createPopper.js"; // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper } from "./popper.js"; // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper as createPopperLite } from "./popper-lite.js";
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/applyStyles.js b/popperjs/package/dist/esm/modifiers/applyStyles.js
new file mode 100644
index 0000000..84ac4ba
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/applyStyles.js
@@ -0,0 +1,84 @@
+import getNodeName from "../dom-utils/getNodeName.js";
+import { isHTMLElement } from "../dom-utils/instanceOf.js"; // This modifier takes the styles prepared by the `computeStyles` modifier
+// and applies them to the HTMLElements such as popper and arrow
+
+function applyStyles(_ref) {
+  var state = _ref.state;
+  Object.keys(state.elements).forEach(function (name) {
+    var style = state.styles[name] || {};
+    var attributes = state.attributes[name] || {};
+    var element = state.elements[name]; // arrow is optional + virtual elements
+
+    if (!isHTMLElement(element) || !getNodeName(element)) {
+      return;
+    } // Flow doesn't support to extend this property, but it's the most
+    // effective way to apply styles to an HTMLElement
+    // $FlowFixMe[cannot-write]
+
+
+    Object.assign(element.style, style);
+    Object.keys(attributes).forEach(function (name) {
+      var value = attributes[name];
+
+      if (value === false) {
+        element.removeAttribute(name);
+      } else {
+        element.setAttribute(name, value === true ? '' : value);
+      }
+    });
+  });
+}
+
+function effect(_ref2) {
+  var state = _ref2.state;
+  var initialStyles = {
+    popper: {
+      position: state.options.strategy,
+      left: '0',
+      top: '0',
+      margin: '0'
+    },
+    arrow: {
+      position: 'absolute'
+    },
+    reference: {}
+  };
+  Object.assign(state.elements.popper.style, initialStyles.popper);
+  state.styles = initialStyles;
+
+  if (state.elements.arrow) {
+    Object.assign(state.elements.arrow.style, initialStyles.arrow);
+  }
+
+  return function () {
+    Object.keys(state.elements).forEach(function (name) {
+      var element = state.elements[name];
+      var attributes = state.attributes[name] || {};
+      var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them
+
+      var style = styleProperties.reduce(function (style, property) {
+        style[property] = '';
+        return style;
+      }, {}); // arrow is optional + virtual elements
+
+      if (!isHTMLElement(element) || !getNodeName(element)) {
+        return;
+      }
+
+      Object.assign(element.style, style);
+      Object.keys(attributes).forEach(function (attribute) {
+        element.removeAttribute(attribute);
+      });
+    });
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'applyStyles',
+  enabled: true,
+  phase: 'write',
+  fn: applyStyles,
+  effect: effect,
+  requires: ['computeStyles']
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/arrow.js b/popperjs/package/dist/esm/modifiers/arrow.js
new file mode 100644
index 0000000..7a92ee0
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/arrow.js
@@ -0,0 +1,101 @@
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getLayoutRect from "../dom-utils/getLayoutRect.js";
+import contains from "../dom-utils/contains.js";
+import getOffsetParent from "../dom-utils/getOffsetParent.js";
+import getMainAxisFromPlacement from "../utils/getMainAxisFromPlacement.js";
+import { within } from "../utils/within.js";
+import mergePaddingObject from "../utils/mergePaddingObject.js";
+import expandToHashMap from "../utils/expandToHashMap.js";
+import { left, right, basePlacements, top, bottom } from "../enums.js";
+import { isHTMLElement } from "../dom-utils/instanceOf.js"; // eslint-disable-next-line import/no-unused-modules
+
+var toPaddingObject = function toPaddingObject(padding, state) {
+  padding = typeof padding === 'function' ? padding(Object.assign({}, state.rects, {
+    placement: state.placement
+  })) : padding;
+  return mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+};
+
+function arrow(_ref) {
+  var _state$modifiersData$;
+
+  var state = _ref.state,
+      name = _ref.name,
+      options = _ref.options;
+  var arrowElement = state.elements.arrow;
+  var popperOffsets = state.modifiersData.popperOffsets;
+  var basePlacement = getBasePlacement(state.placement);
+  var axis = getMainAxisFromPlacement(basePlacement);
+  var isVertical = [left, right].indexOf(basePlacement) >= 0;
+  var len = isVertical ? 'height' : 'width';
+
+  if (!arrowElement || !popperOffsets) {
+    return;
+  }
+
+  var paddingObject = toPaddingObject(options.padding, state);
+  var arrowRect = getLayoutRect(arrowElement);
+  var minProp = axis === 'y' ? top : left;
+  var maxProp = axis === 'y' ? bottom : right;
+  var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];
+  var startDiff = popperOffsets[axis] - state.rects.reference[axis];
+  var arrowOffsetParent = getOffsetParent(arrowElement);
+  var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;
+  var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is
+  // outside of the popper bounds
+
+  var min = paddingObject[minProp];
+  var max = clientSize - arrowRect[len] - paddingObject[maxProp];
+  var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
+  var offset = within(min, center, max); // Prevents breaking syntax highlighting...
+
+  var axisProp = axis;
+  state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);
+}
+
+function effect(_ref2) {
+  var state = _ref2.state,
+      options = _ref2.options;
+  var _options$element = options.element,
+      arrowElement = _options$element === void 0 ? '[data-popper-arrow]' : _options$element;
+
+  if (arrowElement == null) {
+    return;
+  } // CSS selector
+
+
+  if (typeof arrowElement === 'string') {
+    arrowElement = state.elements.popper.querySelector(arrowElement);
+
+    if (!arrowElement) {
+      return;
+    }
+  }
+
+  if (false) {
+    if (!isHTMLElement(arrowElement)) {
+      console.error(['Popper: "arrow" element must be an HTMLElement (not an SVGElement).', 'To use an SVG arrow, wrap it in an HTMLElement that will be used as', 'the arrow.'].join(' '));
+    }
+  }
+
+  if (!contains(state.elements.popper, arrowElement)) {
+    if (false) {
+      console.error(['Popper: "arrow" modifier\'s `element` must be a child of the popper', 'element.'].join(' '));
+    }
+
+    return;
+  }
+
+  state.elements.arrow = arrowElement;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'arrow',
+  enabled: true,
+  phase: 'main',
+  fn: arrow,
+  effect: effect,
+  requires: ['popperOffsets'],
+  requiresIfExists: ['preventOverflow']
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/computeStyles.js b/popperjs/package/dist/esm/modifiers/computeStyles.js
new file mode 100644
index 0000000..05fa6a1
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/computeStyles.js
@@ -0,0 +1,162 @@
+import { top, left, right, bottom, end } from "../enums.js";
+import getOffsetParent from "../dom-utils/getOffsetParent.js";
+import getWindow from "../dom-utils/getWindow.js";
+import getDocumentElement from "../dom-utils/getDocumentElement.js";
+import getComputedStyle from "../dom-utils/getComputedStyle.js";
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getVariation from "../utils/getVariation.js";
+import { round } from "../utils/math.js"; // eslint-disable-next-line import/no-unused-modules
+
+var unsetSides = {
+  top: 'auto',
+  right: 'auto',
+  bottom: 'auto',
+  left: 'auto'
+}; // Round the offsets to the nearest suitable subpixel based on the DPR.
+// Zooming can change the DPR, but it seems to report a value that will
+// cleanly divide the values into the appropriate subpixels.
+
+function roundOffsetsByDPR(_ref) {
+  var x = _ref.x,
+      y = _ref.y;
+  var win = window;
+  var dpr = win.devicePixelRatio || 1;
+  return {
+    x: round(x * dpr) / dpr || 0,
+    y: round(y * dpr) / dpr || 0
+  };
+}
+
+export function mapToStyles(_ref2) {
+  var _Object$assign2;
+
+  var popper = _ref2.popper,
+      popperRect = _ref2.popperRect,
+      placement = _ref2.placement,
+      variation = _ref2.variation,
+      offsets = _ref2.offsets,
+      position = _ref2.position,
+      gpuAcceleration = _ref2.gpuAcceleration,
+      adaptive = _ref2.adaptive,
+      roundOffsets = _ref2.roundOffsets,
+      isFixed = _ref2.isFixed;
+
+  var _ref3 = roundOffsets === true ? roundOffsetsByDPR(offsets) : typeof roundOffsets === 'function' ? roundOffsets(offsets) : offsets,
+      _ref3$x = _ref3.x,
+      x = _ref3$x === void 0 ? 0 : _ref3$x,
+      _ref3$y = _ref3.y,
+      y = _ref3$y === void 0 ? 0 : _ref3$y;
+
+  var hasX = offsets.hasOwnProperty('x');
+  var hasY = offsets.hasOwnProperty('y');
+  var sideX = left;
+  var sideY = top;
+  var win = window;
+
+  if (adaptive) {
+    var offsetParent = getOffsetParent(popper);
+    var heightProp = 'clientHeight';
+    var widthProp = 'clientWidth';
+
+    if (offsetParent === getWindow(popper)) {
+      offsetParent = getDocumentElement(popper);
+
+      if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {
+        heightProp = 'scrollHeight';
+        widthProp = 'scrollWidth';
+      }
+    } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+
+
+    offsetParent = offsetParent;
+
+    if (placement === top || (placement === left || placement === right) && variation === end) {
+      sideY = bottom;
+      var offsetY = isFixed && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]
+      offsetParent[heightProp];
+      y -= offsetY - popperRect.height;
+      y *= gpuAcceleration ? 1 : -1;
+    }
+
+    if (placement === left || (placement === top || placement === bottom) && variation === end) {
+      sideX = right;
+      var offsetX = isFixed && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
+      offsetParent[widthProp];
+      x -= offsetX - popperRect.width;
+      x *= gpuAcceleration ? 1 : -1;
+    }
+  }
+
+  var commonStyles = Object.assign({
+    position: position
+  }, adaptive && unsetSides);
+
+  if (gpuAcceleration) {
+    var _Object$assign;
+
+    return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
+  }
+
+  return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
+}
+
+function computeStyles(_ref4) {
+  var state = _ref4.state,
+      options = _ref4.options;
+  var _options$gpuAccelerat = options.gpuAcceleration,
+      gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
+      _options$adaptive = options.adaptive,
+      adaptive = _options$adaptive === void 0 ? true : _options$adaptive,
+      _options$roundOffsets = options.roundOffsets,
+      roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;
+
+  if (false) {
+    var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
+
+    if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
+      return transitionProperty.indexOf(property) >= 0;
+    })) {
+      console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
+    }
+  }
+
+  var commonStyles = {
+    placement: getBasePlacement(state.placement),
+    variation: getVariation(state.placement),
+    popper: state.elements.popper,
+    popperRect: state.rects.popper,
+    gpuAcceleration: gpuAcceleration,
+    isFixed: state.options.strategy === 'fixed'
+  };
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.popperOffsets,
+      position: state.options.strategy,
+      adaptive: adaptive,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  if (state.modifiersData.arrow != null) {
+    state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.arrow,
+      position: 'absolute',
+      adaptive: false,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  state.attributes.popper = Object.assign({}, state.attributes.popper, {
+    'data-popper-placement': state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'computeStyles',
+  enabled: true,
+  phase: 'beforeWrite',
+  fn: computeStyles,
+  data: {}
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/eventListeners.js b/popperjs/package/dist/esm/modifiers/eventListeners.js
new file mode 100644
index 0000000..bc68f35
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/eventListeners.js
@@ -0,0 +1,49 @@
+import getWindow from "../dom-utils/getWindow.js"; // eslint-disable-next-line import/no-unused-modules
+
+var passive = {
+  passive: true
+};
+
+function effect(_ref) {
+  var state = _ref.state,
+      instance = _ref.instance,
+      options = _ref.options;
+  var _options$scroll = options.scroll,
+      scroll = _options$scroll === void 0 ? true : _options$scroll,
+      _options$resize = options.resize,
+      resize = _options$resize === void 0 ? true : _options$resize;
+  var window = getWindow(state.elements.popper);
+  var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);
+
+  if (scroll) {
+    scrollParents.forEach(function (scrollParent) {
+      scrollParent.addEventListener('scroll', instance.update, passive);
+    });
+  }
+
+  if (resize) {
+    window.addEventListener('resize', instance.update, passive);
+  }
+
+  return function () {
+    if (scroll) {
+      scrollParents.forEach(function (scrollParent) {
+        scrollParent.removeEventListener('scroll', instance.update, passive);
+      });
+    }
+
+    if (resize) {
+      window.removeEventListener('resize', instance.update, passive);
+    }
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'eventListeners',
+  enabled: true,
+  phase: 'write',
+  fn: function fn() {},
+  effect: effect,
+  data: {}
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/flip.js b/popperjs/package/dist/esm/modifiers/flip.js
new file mode 100644
index 0000000..2c33216
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/flip.js
@@ -0,0 +1,147 @@
+import getOppositePlacement from "../utils/getOppositePlacement.js";
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getOppositeVariationPlacement from "../utils/getOppositeVariationPlacement.js";
+import detectOverflow from "../utils/detectOverflow.js";
+import computeAutoPlacement from "../utils/computeAutoPlacement.js";
+import { bottom, top, start, right, left, auto } from "../enums.js";
+import getVariation from "../utils/getVariation.js"; // eslint-disable-next-line import/no-unused-modules
+
+function getExpandedFallbackPlacements(placement) {
+  if (getBasePlacement(placement) === auto) {
+    return [];
+  }
+
+  var oppositePlacement = getOppositePlacement(placement);
+  return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];
+}
+
+function flip(_ref) {
+  var state = _ref.state,
+      options = _ref.options,
+      name = _ref.name;
+
+  if (state.modifiersData[name]._skip) {
+    return;
+  }
+
+  var _options$mainAxis = options.mainAxis,
+      checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+      _options$altAxis = options.altAxis,
+      checkAltAxis = _options$altAxis === void 0 ? true : _options$altAxis,
+      specifiedFallbackPlacements = options.fallbackPlacements,
+      padding = options.padding,
+      boundary = options.boundary,
+      rootBoundary = options.rootBoundary,
+      altBoundary = options.altBoundary,
+      _options$flipVariatio = options.flipVariations,
+      flipVariations = _options$flipVariatio === void 0 ? true : _options$flipVariatio,
+      allowedAutoPlacements = options.allowedAutoPlacements;
+  var preferredPlacement = state.options.placement;
+  var basePlacement = getBasePlacement(preferredPlacement);
+  var isBasePlacement = basePlacement === preferredPlacement;
+  var fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipVariations ? [getOppositePlacement(preferredPlacement)] : getExpandedFallbackPlacements(preferredPlacement));
+  var placements = [preferredPlacement].concat(fallbackPlacements).reduce(function (acc, placement) {
+    return acc.concat(getBasePlacement(placement) === auto ? computeAutoPlacement(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      padding: padding,
+      flipVariations: flipVariations,
+      allowedAutoPlacements: allowedAutoPlacements
+    }) : placement);
+  }, []);
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var checksMap = new Map();
+  var makeFallbackChecks = true;
+  var firstFittingPlacement = placements[0];
+
+  for (var i = 0; i < placements.length; i++) {
+    var placement = placements[i];
+
+    var _basePlacement = getBasePlacement(placement);
+
+    var isStartVariation = getVariation(placement) === start;
+    var isVertical = [top, bottom].indexOf(_basePlacement) >= 0;
+    var len = isVertical ? 'width' : 'height';
+    var overflow = detectOverflow(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      altBoundary: altBoundary,
+      padding: padding
+    });
+    var mainVariationSide = isVertical ? isStartVariation ? right : left : isStartVariation ? bottom : top;
+
+    if (referenceRect[len] > popperRect[len]) {
+      mainVariationSide = getOppositePlacement(mainVariationSide);
+    }
+
+    var altVariationSide = getOppositePlacement(mainVariationSide);
+    var checks = [];
+
+    if (checkMainAxis) {
+      checks.push(overflow[_basePlacement] <= 0);
+    }
+
+    if (checkAltAxis) {
+      checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);
+    }
+
+    if (checks.every(function (check) {
+      return check;
+    })) {
+      firstFittingPlacement = placement;
+      makeFallbackChecks = false;
+      break;
+    }
+
+    checksMap.set(placement, checks);
+  }
+
+  if (makeFallbackChecks) {
+    // `2` may be desired in some cases – research later
+    var numberOfChecks = flipVariations ? 3 : 1;
+
+    var _loop = function _loop(_i) {
+      var fittingPlacement = placements.find(function (placement) {
+        var checks = checksMap.get(placement);
+
+        if (checks) {
+          return checks.slice(0, _i).every(function (check) {
+            return check;
+          });
+        }
+      });
+
+      if (fittingPlacement) {
+        firstFittingPlacement = fittingPlacement;
+        return "break";
+      }
+    };
+
+    for (var _i = numberOfChecks; _i > 0; _i--) {
+      var _ret = _loop(_i);
+
+      if (_ret === "break") break;
+    }
+  }
+
+  if (state.placement !== firstFittingPlacement) {
+    state.modifiersData[name]._skip = true;
+    state.placement = firstFittingPlacement;
+    state.reset = true;
+  }
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'flip',
+  enabled: true,
+  phase: 'main',
+  fn: flip,
+  requiresIfExists: ['offset'],
+  data: {
+    _skip: false
+  }
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/hide.js b/popperjs/package/dist/esm/modifiers/hide.js
new file mode 100644
index 0000000..799c4a7
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/hide.js
@@ -0,0 +1,61 @@
+import { top, bottom, left, right } from "../enums.js";
+import detectOverflow from "../utils/detectOverflow.js";
+
+function getSideOffsets(overflow, rect, preventedOffsets) {
+  if (preventedOffsets === void 0) {
+    preventedOffsets = {
+      x: 0,
+      y: 0
+    };
+  }
+
+  return {
+    top: overflow.top - rect.height - preventedOffsets.y,
+    right: overflow.right - rect.width + preventedOffsets.x,
+    bottom: overflow.bottom - rect.height + preventedOffsets.y,
+    left: overflow.left - rect.width - preventedOffsets.x
+  };
+}
+
+function isAnySideFullyClipped(overflow) {
+  return [top, right, bottom, left].some(function (side) {
+    return overflow[side] >= 0;
+  });
+}
+
+function hide(_ref) {
+  var state = _ref.state,
+      name = _ref.name;
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var preventedOffsets = state.modifiersData.preventOverflow;
+  var referenceOverflow = detectOverflow(state, {
+    elementContext: 'reference'
+  });
+  var popperAltOverflow = detectOverflow(state, {
+    altBoundary: true
+  });
+  var referenceClippingOffsets = getSideOffsets(referenceOverflow, referenceRect);
+  var popperEscapeOffsets = getSideOffsets(popperAltOverflow, popperRect, preventedOffsets);
+  var isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
+  var hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
+  state.modifiersData[name] = {
+    referenceClippingOffsets: referenceClippingOffsets,
+    popperEscapeOffsets: popperEscapeOffsets,
+    isReferenceHidden: isReferenceHidden,
+    hasPopperEscaped: hasPopperEscaped
+  };
+  state.attributes.popper = Object.assign({}, state.attributes.popper, {
+    'data-popper-reference-hidden': isReferenceHidden,
+    'data-popper-escaped': hasPopperEscaped
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'hide',
+  enabled: true,
+  phase: 'main',
+  requiresIfExists: ['preventOverflow'],
+  fn: hide
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/index.js b/popperjs/package/dist/esm/modifiers/index.js
new file mode 100644
index 0000000..1d59909
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/index.js
@@ -0,0 +1,9 @@
+export { default as applyStyles } from "./applyStyles.js";
+export { default as arrow } from "./arrow.js";
+export { default as computeStyles } from "./computeStyles.js";
+export { default as eventListeners } from "./eventListeners.js";
+export { default as flip } from "./flip.js";
+export { default as hide } from "./hide.js";
+export { default as offset } from "./offset.js";
+export { default as popperOffsets } from "./popperOffsets.js";
+export { default as preventOverflow } from "./preventOverflow.js";
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/offset.js b/popperjs/package/dist/esm/modifiers/offset.js
new file mode 100644
index 0000000..12fa007
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/offset.js
@@ -0,0 +1,54 @@
+import getBasePlacement from "../utils/getBasePlacement.js";
+import { top, left, right, placements } from "../enums.js"; // eslint-disable-next-line import/no-unused-modules
+
+export function distanceAndSkiddingToXY(placement, rects, offset) {
+  var basePlacement = getBasePlacement(placement);
+  var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;
+
+  var _ref = typeof offset === 'function' ? offset(Object.assign({}, rects, {
+    placement: placement
+  })) : offset,
+      skidding = _ref[0],
+      distance = _ref[1];
+
+  skidding = skidding || 0;
+  distance = (distance || 0) * invertDistance;
+  return [left, right].indexOf(basePlacement) >= 0 ? {
+    x: distance,
+    y: skidding
+  } : {
+    x: skidding,
+    y: distance
+  };
+}
+
+function offset(_ref2) {
+  var state = _ref2.state,
+      options = _ref2.options,
+      name = _ref2.name;
+  var _options$offset = options.offset,
+      offset = _options$offset === void 0 ? [0, 0] : _options$offset;
+  var data = placements.reduce(function (acc, placement) {
+    acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);
+    return acc;
+  }, {});
+  var _data$state$placement = data[state.placement],
+      x = _data$state$placement.x,
+      y = _data$state$placement.y;
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.modifiersData.popperOffsets.x += x;
+    state.modifiersData.popperOffsets.y += y;
+  }
+
+  state.modifiersData[name] = data;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'offset',
+  enabled: true,
+  phase: 'main',
+  requires: ['popperOffsets'],
+  fn: offset
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/popperOffsets.js b/popperjs/package/dist/esm/modifiers/popperOffsets.js
new file mode 100644
index 0000000..5440ab7
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/popperOffsets.js
@@ -0,0 +1,25 @@
+import computeOffsets from "../utils/computeOffsets.js";
+
+function popperOffsets(_ref) {
+  var state = _ref.state,
+      name = _ref.name;
+  // Offsets are the actual position the popper needs to have to be
+  // properly positioned near its reference element
+  // This is the most basic placement, and will be adjusted by
+  // the modifiers in the next step
+  state.modifiersData[name] = computeOffsets({
+    reference: state.rects.reference,
+    element: state.rects.popper,
+    strategy: 'absolute',
+    placement: state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'popperOffsets',
+  enabled: true,
+  phase: 'read',
+  fn: popperOffsets,
+  data: {}
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/modifiers/preventOverflow.js b/popperjs/package/dist/esm/modifiers/preventOverflow.js
new file mode 100644
index 0000000..729eedd
--- /dev/null
+++ b/popperjs/package/dist/esm/modifiers/preventOverflow.js
@@ -0,0 +1,142 @@
+import { top, left, right, bottom, start } from "../enums.js";
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getMainAxisFromPlacement from "../utils/getMainAxisFromPlacement.js";
+import getAltAxis from "../utils/getAltAxis.js";
+import { within, withinMaxClamp } from "../utils/within.js";
+import getLayoutRect from "../dom-utils/getLayoutRect.js";
+import getOffsetParent from "../dom-utils/getOffsetParent.js";
+import detectOverflow from "../utils/detectOverflow.js";
+import getVariation from "../utils/getVariation.js";
+import getFreshSideObject from "../utils/getFreshSideObject.js";
+import { min as mathMin, max as mathMax } from "../utils/math.js";
+
+function preventOverflow(_ref) {
+  var state = _ref.state,
+      options = _ref.options,
+      name = _ref.name;
+  var _options$mainAxis = options.mainAxis,
+      checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+      _options$altAxis = options.altAxis,
+      checkAltAxis = _options$altAxis === void 0 ? false : _options$altAxis,
+      boundary = options.boundary,
+      rootBoundary = options.rootBoundary,
+      altBoundary = options.altBoundary,
+      padding = options.padding,
+      _options$tether = options.tether,
+      tether = _options$tether === void 0 ? true : _options$tether,
+      _options$tetherOffset = options.tetherOffset,
+      tetherOffset = _options$tetherOffset === void 0 ? 0 : _options$tetherOffset;
+  var overflow = detectOverflow(state, {
+    boundary: boundary,
+    rootBoundary: rootBoundary,
+    padding: padding,
+    altBoundary: altBoundary
+  });
+  var basePlacement = getBasePlacement(state.placement);
+  var variation = getVariation(state.placement);
+  var isBasePlacement = !variation;
+  var mainAxis = getMainAxisFromPlacement(basePlacement);
+  var altAxis = getAltAxis(mainAxis);
+  var popperOffsets = state.modifiersData.popperOffsets;
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var tetherOffsetValue = typeof tetherOffset === 'function' ? tetherOffset(Object.assign({}, state.rects, {
+    placement: state.placement
+  })) : tetherOffset;
+  var normalizedTetherOffsetValue = typeof tetherOffsetValue === 'number' ? {
+    mainAxis: tetherOffsetValue,
+    altAxis: tetherOffsetValue
+  } : Object.assign({
+    mainAxis: 0,
+    altAxis: 0
+  }, tetherOffsetValue);
+  var offsetModifierState = state.modifiersData.offset ? state.modifiersData.offset[state.placement] : null;
+  var data = {
+    x: 0,
+    y: 0
+  };
+
+  if (!popperOffsets) {
+    return;
+  }
+
+  if (checkMainAxis) {
+    var _offsetModifierState$;
+
+    var mainSide = mainAxis === 'y' ? top : left;
+    var altSide = mainAxis === 'y' ? bottom : right;
+    var len = mainAxis === 'y' ? 'height' : 'width';
+    var offset = popperOffsets[mainAxis];
+    var min = offset + overflow[mainSide];
+    var max = offset - overflow[altSide];
+    var additive = tether ? -popperRect[len] / 2 : 0;
+    var minLen = variation === start ? referenceRect[len] : popperRect[len];
+    var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go
+    // outside the reference bounds
+
+    var arrowElement = state.elements.arrow;
+    var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {
+      width: 0,
+      height: 0
+    };
+    var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();
+    var arrowPaddingMin = arrowPaddingObject[mainSide];
+    var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want
+    // to include its full size in the calculation. If the reference is small
+    // and near the edge of a boundary, the popper can overflow even if the
+    // reference is not overflowing as well (e.g. virtual elements with no
+    // width or height)
+
+    var arrowLen = within(0, referenceRect[len], arrowRect[len]);
+    var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis : minLen - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis;
+    var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis : maxLen + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis;
+    var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);
+    var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;
+    var offsetModifierValue = (_offsetModifierState$ = offsetModifierState == null ? void 0 : offsetModifierState[mainAxis]) != null ? _offsetModifierState$ : 0;
+    var tetherMin = offset + minOffset - offsetModifierValue - clientOffset;
+    var tetherMax = offset + maxOffset - offsetModifierValue;
+    var preventedOffset = within(tether ? mathMin(min, tetherMin) : min, offset, tether ? mathMax(max, tetherMax) : max);
+    popperOffsets[mainAxis] = preventedOffset;
+    data[mainAxis] = preventedOffset - offset;
+  }
+
+  if (checkAltAxis) {
+    var _offsetModifierState$2;
+
+    var _mainSide = mainAxis === 'x' ? top : left;
+
+    var _altSide = mainAxis === 'x' ? bottom : right;
+
+    var _offset = popperOffsets[altAxis];
+
+    var _len = altAxis === 'y' ? 'height' : 'width';
+
+    var _min = _offset + overflow[_mainSide];
+
+    var _max = _offset - overflow[_altSide];
+
+    var isOriginSide = [top, left].indexOf(basePlacement) !== -1;
+
+    var _offsetModifierValue = (_offsetModifierState$2 = offsetModifierState == null ? void 0 : offsetModifierState[altAxis]) != null ? _offsetModifierState$2 : 0;
+
+    var _tetherMin = isOriginSide ? _min : _offset - referenceRect[_len] - popperRect[_len] - _offsetModifierValue + normalizedTetherOffsetValue.altAxis;
+
+    var _tetherMax = isOriginSide ? _offset + referenceRect[_len] + popperRect[_len] - _offsetModifierValue - normalizedTetherOffsetValue.altAxis : _max;
+
+    var _preventedOffset = tether && isOriginSide ? withinMaxClamp(_tetherMin, _offset, _tetherMax) : within(tether ? _tetherMin : _min, _offset, tether ? _tetherMax : _max);
+
+    popperOffsets[altAxis] = _preventedOffset;
+    data[altAxis] = _preventedOffset - _offset;
+  }
+
+  state.modifiersData[name] = data;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'preventOverflow',
+  enabled: true,
+  phase: 'main',
+  fn: preventOverflow,
+  requiresIfExists: ['offset']
+};
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/popper-base.js b/popperjs/package/dist/esm/popper-base.js
new file mode 100644
index 0000000..a7c8a32
--- /dev/null
+++ b/popperjs/package/dist/esm/popper-base.js
@@ -0,0 +1,3 @@
+import { createPopper, popperGenerator, detectOverflow } from "./createPopper.js";
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper, popperGenerator, detectOverflow };
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/popper-lite.js b/popperjs/package/dist/esm/popper-lite.js
new file mode 100644
index 0000000..6fb32be
--- /dev/null
+++ b/popperjs/package/dist/esm/popper-lite.js
@@ -0,0 +1,11 @@
+import { popperGenerator, detectOverflow } from "./createPopper.js";
+import eventListeners from "./modifiers/eventListeners.js";
+import popperOffsets from "./modifiers/popperOffsets.js";
+import computeStyles from "./modifiers/computeStyles.js";
+import applyStyles from "./modifiers/applyStyles.js";
+var defaultModifiers = [eventListeners, popperOffsets, computeStyles, applyStyles];
+var createPopper = /*#__PURE__*/popperGenerator({
+  defaultModifiers: defaultModifiers
+}); // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow };
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/popper.js b/popperjs/package/dist/esm/popper.js
new file mode 100644
index 0000000..00f67a0
--- /dev/null
+++ b/popperjs/package/dist/esm/popper.js
@@ -0,0 +1,20 @@
+import { popperGenerator, detectOverflow } from "./createPopper.js";
+import eventListeners from "./modifiers/eventListeners.js";
+import popperOffsets from "./modifiers/popperOffsets.js";
+import computeStyles from "./modifiers/computeStyles.js";
+import applyStyles from "./modifiers/applyStyles.js";
+import offset from "./modifiers/offset.js";
+import flip from "./modifiers/flip.js";
+import preventOverflow from "./modifiers/preventOverflow.js";
+import arrow from "./modifiers/arrow.js";
+import hide from "./modifiers/hide.js";
+var defaultModifiers = [eventListeners, popperOffsets, computeStyles, applyStyles, offset, flip, preventOverflow, arrow, hide];
+var createPopper = /*#__PURE__*/popperGenerator({
+  defaultModifiers: defaultModifiers
+}); // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow }; // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper as createPopperLite } from "./popper-lite.js"; // eslint-disable-next-line import/no-unused-modules
+
+export * from "./modifiers/index.js";
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/types.js b/popperjs/package/dist/esm/types.js
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/popperjs/package/dist/esm/types.js
diff --git a/popperjs/package/dist/esm/utils/computeAutoPlacement.js b/popperjs/package/dist/esm/utils/computeAutoPlacement.js
new file mode 100644
index 0000000..9c966d3
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/computeAutoPlacement.js
@@ -0,0 +1,47 @@
+import getVariation from "./getVariation.js";
+import { variationPlacements, basePlacements, placements as allPlacements } from "../enums.js";
+import detectOverflow from "./detectOverflow.js";
+import getBasePlacement from "./getBasePlacement.js";
+export default function computeAutoPlacement(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      placement = _options.placement,
+      boundary = _options.boundary,
+      rootBoundary = _options.rootBoundary,
+      padding = _options.padding,
+      flipVariations = _options.flipVariations,
+      _options$allowedAutoP = _options.allowedAutoPlacements,
+      allowedAutoPlacements = _options$allowedAutoP === void 0 ? allPlacements : _options$allowedAutoP;
+  var variation = getVariation(placement);
+  var placements = variation ? flipVariations ? variationPlacements : variationPlacements.filter(function (placement) {
+    return getVariation(placement) === variation;
+  }) : basePlacements;
+  var allowedPlacements = placements.filter(function (placement) {
+    return allowedAutoPlacements.indexOf(placement) >= 0;
+  });
+
+  if (allowedPlacements.length === 0) {
+    allowedPlacements = placements;
+
+    if (false) {
+      console.error(['Popper: The `allowedAutoPlacements` option did not allow any', 'placements. Ensure the `placement` option matches the variation', 'of the allowed placements.', 'For example, "auto" cannot be used to allow "bottom-start".', 'Use "auto-start" instead.'].join(' '));
+    }
+  } // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...
+
+
+  var overflows = allowedPlacements.reduce(function (acc, placement) {
+    acc[placement] = detectOverflow(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      padding: padding
+    })[getBasePlacement(placement)];
+    return acc;
+  }, {});
+  return Object.keys(overflows).sort(function (a, b) {
+    return overflows[a] - overflows[b];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/computeOffsets.js b/popperjs/package/dist/esm/utils/computeOffsets.js
new file mode 100644
index 0000000..7a81690
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/computeOffsets.js
@@ -0,0 +1,70 @@
+import getBasePlacement from "./getBasePlacement.js";
+import getVariation from "./getVariation.js";
+import getMainAxisFromPlacement from "./getMainAxisFromPlacement.js";
+import { top, right, bottom, left, start, end } from "../enums.js";
+export default function computeOffsets(_ref) {
+  var reference = _ref.reference,
+      element = _ref.element,
+      placement = _ref.placement;
+  var basePlacement = placement ? getBasePlacement(placement) : null;
+  var variation = placement ? getVariation(placement) : null;
+  var commonX = reference.x + reference.width / 2 - element.width / 2;
+  var commonY = reference.y + reference.height / 2 - element.height / 2;
+  var offsets;
+
+  switch (basePlacement) {
+    case top:
+      offsets = {
+        x: commonX,
+        y: reference.y - element.height
+      };
+      break;
+
+    case bottom:
+      offsets = {
+        x: commonX,
+        y: reference.y + reference.height
+      };
+      break;
+
+    case right:
+      offsets = {
+        x: reference.x + reference.width,
+        y: commonY
+      };
+      break;
+
+    case left:
+      offsets = {
+        x: reference.x - element.width,
+        y: commonY
+      };
+      break;
+
+    default:
+      offsets = {
+        x: reference.x,
+        y: reference.y
+      };
+  }
+
+  var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+  if (mainAxis != null) {
+    var len = mainAxis === 'y' ? 'height' : 'width';
+
+    switch (variation) {
+      case start:
+        offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+        break;
+
+      case end:
+        offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+        break;
+
+      default:
+    }
+  }
+
+  return offsets;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/debounce.js b/popperjs/package/dist/esm/utils/debounce.js
new file mode 100644
index 0000000..15a78da
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/debounce.js
@@ -0,0 +1,15 @@
+export default function debounce(fn) {
+  var pending;
+  return function () {
+    if (!pending) {
+      pending = new Promise(function (resolve) {
+        Promise.resolve().then(function () {
+          pending = undefined;
+          resolve(fn());
+        });
+      });
+    }
+
+    return pending;
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/detectOverflow.js b/popperjs/package/dist/esm/utils/detectOverflow.js
new file mode 100644
index 0000000..493b8f9
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/detectOverflow.js
@@ -0,0 +1,63 @@
+import getClippingRect from "../dom-utils/getClippingRect.js";
+import getDocumentElement from "../dom-utils/getDocumentElement.js";
+import getBoundingClientRect from "../dom-utils/getBoundingClientRect.js";
+import computeOffsets from "./computeOffsets.js";
+import rectToClientRect from "./rectToClientRect.js";
+import { clippingParents, reference, popper, bottom, top, right, basePlacements, viewport } from "../enums.js";
+import { isElement } from "../dom-utils/instanceOf.js";
+import mergePaddingObject from "./mergePaddingObject.js";
+import expandToHashMap from "./expandToHashMap.js"; // eslint-disable-next-line import/no-unused-modules
+
+export default function detectOverflow(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      _options$placement = _options.placement,
+      placement = _options$placement === void 0 ? state.placement : _options$placement,
+      _options$boundary = _options.boundary,
+      boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+      _options$rootBoundary = _options.rootBoundary,
+      rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+      _options$elementConte = _options.elementContext,
+      elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+      _options$altBoundary = _options.altBoundary,
+      altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+      _options$padding = _options.padding,
+      padding = _options$padding === void 0 ? 0 : _options$padding;
+  var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+  var altContext = elementContext === popper ? reference : popper;
+  var popperRect = state.rects.popper;
+  var element = state.elements[altBoundary ? altContext : elementContext];
+  var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+  var referenceClientRect = getBoundingClientRect(state.elements.reference);
+  var popperOffsets = computeOffsets({
+    reference: referenceClientRect,
+    element: popperRect,
+    strategy: 'absolute',
+    placement: placement
+  });
+  var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+  var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+  // 0 or negative = within the clipping rect
+
+  var overflowOffsets = {
+    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+    bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+    right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+  };
+  var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+  if (elementContext === popper && offsetData) {
+    var offset = offsetData[placement];
+    Object.keys(overflowOffsets).forEach(function (key) {
+      var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+      var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+      overflowOffsets[key] += offset[axis] * multiply;
+    });
+  }
+
+  return overflowOffsets;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/expandToHashMap.js b/popperjs/package/dist/esm/utils/expandToHashMap.js
new file mode 100644
index 0000000..e428d58
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/expandToHashMap.js
@@ -0,0 +1,6 @@
+export default function expandToHashMap(value, keys) {
+  return keys.reduce(function (hashMap, key) {
+    hashMap[key] = value;
+    return hashMap;
+  }, {});
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/format.js b/popperjs/package/dist/esm/utils/format.js
new file mode 100644
index 0000000..c0b8939
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/format.js
@@ -0,0 +1,9 @@
+export default function format(str) {
+  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    args[_key - 1] = arguments[_key];
+  }
+
+  return [].concat(args).reduce(function (p, c) {
+    return p.replace(/%s/, c);
+  }, str);
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getAltAxis.js b/popperjs/package/dist/esm/utils/getAltAxis.js
new file mode 100644
index 0000000..d834474
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getAltAxis.js
@@ -0,0 +1,3 @@
+export default function getAltAxis(axis) {
+  return axis === 'x' ? 'y' : 'x';
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getAltLen.js b/popperjs/package/dist/esm/utils/getAltLen.js
new file mode 100644
index 0000000..eb68d19
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getAltLen.js
@@ -0,0 +1,3 @@
+export default function getAltLen(len) {
+  return len === 'width' ? 'height' : 'width';
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getBasePlacement.js b/popperjs/package/dist/esm/utils/getBasePlacement.js
new file mode 100644
index 0000000..9eebf96
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getBasePlacement.js
@@ -0,0 +1,4 @@
+import { auto } from "../enums.js";
+export default function getBasePlacement(placement) {
+  return placement.split('-')[0];
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getFreshSideObject.js b/popperjs/package/dist/esm/utils/getFreshSideObject.js
new file mode 100644
index 0000000..fcec47e
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getFreshSideObject.js
@@ -0,0 +1,8 @@
+export default function getFreshSideObject() {
+  return {
+    top: 0,
+    right: 0,
+    bottom: 0,
+    left: 0
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getMainAxisFromPlacement.js b/popperjs/package/dist/esm/utils/getMainAxisFromPlacement.js
new file mode 100644
index 0000000..fe186b3
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getMainAxisFromPlacement.js
@@ -0,0 +1,3 @@
+export default function getMainAxisFromPlacement(placement) {
+  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getOppositePlacement.js b/popperjs/package/dist/esm/utils/getOppositePlacement.js
new file mode 100644
index 0000000..180ec6e
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getOppositePlacement.js
@@ -0,0 +1,11 @@
+var hash = {
+  left: 'right',
+  right: 'left',
+  bottom: 'top',
+  top: 'bottom'
+};
+export default function getOppositePlacement(placement) {
+  return placement.replace(/left|right|bottom|top/g, function (matched) {
+    return hash[matched];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getOppositeVariationPlacement.js b/popperjs/package/dist/esm/utils/getOppositeVariationPlacement.js
new file mode 100644
index 0000000..379d071
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getOppositeVariationPlacement.js
@@ -0,0 +1,9 @@
+var hash = {
+  start: 'end',
+  end: 'start'
+};
+export default function getOppositeVariationPlacement(placement) {
+  return placement.replace(/start|end/g, function (matched) {
+    return hash[matched];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/getVariation.js b/popperjs/package/dist/esm/utils/getVariation.js
new file mode 100644
index 0000000..c760df2
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/getVariation.js
@@ -0,0 +1,3 @@
+export default function getVariation(placement) {
+  return placement.split('-')[1];
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/math.js b/popperjs/package/dist/esm/utils/math.js
new file mode 100644
index 0000000..d92a000
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/math.js
@@ -0,0 +1,3 @@
+export var max = Math.max;
+export var min = Math.min;
+export var round = Math.round;
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/mergeByName.js b/popperjs/package/dist/esm/utils/mergeByName.js
new file mode 100644
index 0000000..35f508a
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/mergeByName.js
@@ -0,0 +1,14 @@
+export default function mergeByName(modifiers) {
+  var merged = modifiers.reduce(function (merged, current) {
+    var existing = merged[current.name];
+    merged[current.name] = existing ? Object.assign({}, existing, current, {
+      options: Object.assign({}, existing.options, current.options),
+      data: Object.assign({}, existing.data, current.data)
+    }) : current;
+    return merged;
+  }, {}); // IE11 does not support Object.values
+
+  return Object.keys(merged).map(function (key) {
+    return merged[key];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/mergePaddingObject.js b/popperjs/package/dist/esm/utils/mergePaddingObject.js
new file mode 100644
index 0000000..26af6c5
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/mergePaddingObject.js
@@ -0,0 +1,4 @@
+import getFreshSideObject from "./getFreshSideObject.js";
+export default function mergePaddingObject(paddingObject) {
+  return Object.assign({}, getFreshSideObject(), paddingObject);
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/orderModifiers.js b/popperjs/package/dist/esm/utils/orderModifiers.js
new file mode 100644
index 0000000..82572bc
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/orderModifiers.js
@@ -0,0 +1,44 @@
+import { modifierPhases } from "../enums.js"; // source: https://stackoverflow.com/questions/49875255
+
+function order(modifiers) {
+  var map = new Map();
+  var visited = new Set();
+  var result = [];
+  modifiers.forEach(function (modifier) {
+    map.set(modifier.name, modifier);
+  }); // On visiting object, check for its dependencies and visit them recursively
+
+  function sort(modifier) {
+    visited.add(modifier.name);
+    var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+    requires.forEach(function (dep) {
+      if (!visited.has(dep)) {
+        var depModifier = map.get(dep);
+
+        if (depModifier) {
+          sort(depModifier);
+        }
+      }
+    });
+    result.push(modifier);
+  }
+
+  modifiers.forEach(function (modifier) {
+    if (!visited.has(modifier.name)) {
+      // check for visited object
+      sort(modifier);
+    }
+  });
+  return result;
+}
+
+export default function orderModifiers(modifiers) {
+  // order based on dependencies
+  var orderedModifiers = order(modifiers); // order based on phase
+
+  return modifierPhases.reduce(function (acc, phase) {
+    return acc.concat(orderedModifiers.filter(function (modifier) {
+      return modifier.phase === phase;
+    }));
+  }, []);
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/rectToClientRect.js b/popperjs/package/dist/esm/utils/rectToClientRect.js
new file mode 100644
index 0000000..5685476
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/rectToClientRect.js
@@ -0,0 +1,8 @@
+export default function rectToClientRect(rect) {
+  return Object.assign({}, rect, {
+    left: rect.x,
+    top: rect.y,
+    right: rect.x + rect.width,
+    bottom: rect.y + rect.height
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/uniqueBy.js b/popperjs/package/dist/esm/utils/uniqueBy.js
new file mode 100644
index 0000000..5e083f3
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/uniqueBy.js
@@ -0,0 +1,11 @@
+export default function uniqueBy(arr, fn) {
+  var identifiers = new Set();
+  return arr.filter(function (item) {
+    var identifier = fn(item);
+
+    if (!identifiers.has(identifier)) {
+      identifiers.add(identifier);
+      return true;
+    }
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/validateModifiers.js b/popperjs/package/dist/esm/utils/validateModifiers.js
new file mode 100644
index 0000000..5bddf51
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/validateModifiers.js
@@ -0,0 +1,81 @@
+import format from "./format.js";
+import { modifierPhases } from "../enums.js";
+var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+export default function validateModifiers(modifiers) {
+  modifiers.forEach(function (modifier) {
+    [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+    .filter(function (value, index, self) {
+      return self.indexOf(value) === index;
+    }).forEach(function (key) {
+      switch (key) {
+        case 'name':
+          if (typeof modifier.name !== 'string') {
+            console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+          }
+
+          break;
+
+        case 'enabled':
+          if (typeof modifier.enabled !== 'boolean') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+          }
+
+          break;
+
+        case 'phase':
+          if (modifierPhases.indexOf(modifier.phase) < 0) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+          }
+
+          break;
+
+        case 'fn':
+          if (typeof modifier.fn !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'effect':
+          if (modifier.effect != null && typeof modifier.effect !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'requires':
+          if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+          }
+
+          break;
+
+        case 'requiresIfExists':
+          if (!Array.isArray(modifier.requiresIfExists)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+          }
+
+          break;
+
+        case 'options':
+        case 'data':
+          break;
+
+        default:
+          console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+            return "\"" + s + "\"";
+          }).join(', ') + "; but \"" + key + "\" was provided.");
+      }
+
+      modifier.requires && modifier.requires.forEach(function (requirement) {
+        if (modifiers.find(function (mod) {
+          return mod.name === requirement;
+        }) == null) {
+          console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+        }
+      });
+    });
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/esm/utils/within.js b/popperjs/package/dist/esm/utils/within.js
new file mode 100644
index 0000000..da7bf76
--- /dev/null
+++ b/popperjs/package/dist/esm/utils/within.js
@@ -0,0 +1,8 @@
+import { max as mathMax, min as mathMin } from "./math.js";
+export function within(min, value, max) {
+  return mathMax(min, mathMin(value, max));
+}
+export function withinMaxClamp(min, value, max) {
+  var v = within(min, value, max);
+  return v > max ? max : v;
+}
\ No newline at end of file
diff --git a/popperjs/package/dist/umd/enums.js b/popperjs/package/dist/umd/enums.js
new file mode 100644
index 0000000..3d7e8b2
--- /dev/null
+++ b/popperjs/package/dist/umd/enums.js
@@ -0,0 +1,71 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.Popper = {}));
+}(this, (function (exports) { 'use strict';
+
+  var top = 'top';
+  var bottom = 'bottom';
+  var right = 'right';
+  var left = 'left';
+  var auto = 'auto';
+  var basePlacements = [top, bottom, right, left];
+  var start = 'start';
+  var end = 'end';
+  var clippingParents = 'clippingParents';
+  var viewport = 'viewport';
+  var popper = 'popper';
+  var reference = 'reference';
+  var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
+    return acc.concat([placement + "-" + start, placement + "-" + end]);
+  }, []);
+  var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
+    return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
+  }, []); // modifiers that need to read the DOM
+
+  var beforeRead = 'beforeRead';
+  var read = 'read';
+  var afterRead = 'afterRead'; // pure-logic modifiers
+
+  var beforeMain = 'beforeMain';
+  var main = 'main';
+  var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+  var beforeWrite = 'beforeWrite';
+  var write = 'write';
+  var afterWrite = 'afterWrite';
+  var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+  exports.afterMain = afterMain;
+  exports.afterRead = afterRead;
+  exports.afterWrite = afterWrite;
+  exports.auto = auto;
+  exports.basePlacements = basePlacements;
+  exports.beforeMain = beforeMain;
+  exports.beforeRead = beforeRead;
+  exports.beforeWrite = beforeWrite;
+  exports.bottom = bottom;
+  exports.clippingParents = clippingParents;
+  exports.end = end;
+  exports.left = left;
+  exports.main = main;
+  exports.modifierPhases = modifierPhases;
+  exports.placements = placements;
+  exports.popper = popper;
+  exports.read = read;
+  exports.reference = reference;
+  exports.right = right;
+  exports.start = start;
+  exports.top = top;
+  exports.variationPlacements = variationPlacements;
+  exports.viewport = viewport;
+  exports.write = write;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
+//# sourceMappingURL=enums.js.map
diff --git a/popperjs/package/dist/umd/enums.js.map b/popperjs/package/dist/umd/enums.js.map
new file mode 100644
index 0000000..022e338
--- /dev/null
+++ b/popperjs/package/dist/umd/enums.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"enums.js","sources":["../../src/enums.js"],"sourcesContent":["// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n"],"names":["top","bottom","right","left","auto","basePlacements","start","end","clippingParents","viewport","popper","reference","variationPlacements","reduce","acc","placement","concat","placements","beforeRead","read","afterRead","beforeMain","main","afterMain","beforeWrite","write","afterWrite","modifierPhases"],"mappings":";;;;;;;;;;MACaA,GAAU,GAAG;MACbC,MAAgB,GAAG;MACnBC,KAAc,GAAG;MACjBC,IAAY,GAAG;MACfC,IAAY,GAAG;MAMfC,cAAoC,GAAG,CAACL,GAAD,EAAMC,MAAN,EAAcC,KAAd,EAAqBC,IAArB;MAEvCG,KAAc,GAAG;MACjBC,GAAU,GAAG;MAGbC,eAAkC,GAAG;MACrCC,QAAoB,GAAG;MAIvBC,MAAgB,GAAG;MACnBC,SAAsB,GAAG;MAgBzBC,mBAA8C,gBAAGP,cAAc,CAACQ,MAAf,CAC5D,UAACC,GAAD,EAAiCC,SAAjC;EAAA,SACED,GAAG,CAACE,MAAJ,CAAW,CAAKD,SAAL,SAAkBT,KAAlB,EAAqCS,SAArC,SAAkDR,GAAlD,CAAX,CADF;EAAA,CAD4D,EAG5D,EAH4D;MAKjDU,UAA4B,gBAAG,UAAIZ,cAAJ,GAAoBD,IAApB,GAA0BS,MAA1B,CAC1C,UACEC,GADF,EAEEC,SAFF;EAAA,SAIED,GAAG,CAACE,MAAJ,CAAW,CACTD,SADS,EAELA,SAFK,SAEQT,KAFR,EAGLS,SAHK,SAGQR,GAHR,CAAX,CAJF;EAAA,CAD0C,EAU1C,EAV0C;;MAc/BW,UAAwB,GAAG;MAC3BC,IAAY,GAAG;MACfC,SAAsB,GAAG;;MAEzBC,UAAwB,GAAG;MAC3BC,IAAY,GAAG;MACfC,SAAsB,GAAG;;MAEzBC,WAA0B,GAAG;MAC7BC,KAAc,GAAG;MACjBC,UAAwB,GAAG;MAC3BC,cAAqC,GAAG,CACnDT,UADmD,EAEnDC,IAFmD,EAGnDC,SAHmD,EAInDC,UAJmD,EAKnDC,IALmD,EAMnDC,SANmD,EAOnDC,WAPmD,EAQnDC,KARmD,EASnDC,UATmD;;;;;;;;;;;;;;;;;;;;;;;;;;;;;"}
\ No newline at end of file
diff --git a/popperjs/package/dist/umd/enums.min.js b/popperjs/package/dist/umd/enums.min.js
new file mode 100644
index 0000000..260aae1
--- /dev/null
+++ b/popperjs/package/dist/umd/enums.min.js
@@ -0,0 +1,6 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+"use strict";!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).Popper={})}(this,(function(e){var t=["top","bottom","right","left"],r=t.reduce((function(e,t){return e.concat([t+"-start",t+"-end"])}),[]),a=[].concat(t,["auto"]).reduce((function(e,t){return e.concat([t,t+"-start",t+"-end"])}),[]);e.afterMain="afterMain",e.afterRead="afterRead",e.afterWrite="afterWrite",e.auto="auto",e.basePlacements=t,e.beforeMain="beforeMain",e.beforeRead="beforeRead",e.beforeWrite="beforeWrite",e.bottom="bottom",e.clippingParents="clippingParents",e.end="end",e.left="left",e.main="main",e.modifierPhases="beforeRead read afterRead beforeMain main afterMain beforeWrite write afterWrite".split(" "),e.placements=a,e.popper="popper",e.read="read",e.reference="reference",e.right="right",e.start="start",e.top="top",e.variationPlacements=r,e.viewport="viewport",e.write="write",Object.defineProperty(e,"__esModule",{value:!0})}));
+//# sourceMappingURL=enums.min.js.map
diff --git a/popperjs/package/dist/umd/enums.min.js.flow b/popperjs/package/dist/umd/enums.min.js.flow
new file mode 100644
index 0000000..8512ad0
--- /dev/null
+++ b/popperjs/package/dist/umd/enums.min.js.flow
@@ -0,0 +1,3 @@
+// @flow
+
+export * from '../../lib/enums.js'
diff --git a/popperjs/package/dist/umd/enums.min.js.map b/popperjs/package/dist/umd/enums.min.js.map
new file mode 100644
index 0000000..f3a61ce
--- /dev/null
+++ b/popperjs/package/dist/umd/enums.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"enums.min.js","sources":["../../src/enums.js"],"sourcesContent":["// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n"],"names":["basePlacements","top","bottom","right","left","variationPlacements","acc","placement","placements","auto","afterMain","afterRead","afterWrite","beforeMain","beforeRead","beforeWrite","clippingParents","end","main","modifierPhases","popper","read","reference","start","viewport","write"],"mappings":";;;;kPAWaA,EAAuC,CAV1BC,MACMC,SACFC,QACFC,QAmCfC,EAAiDL,UAC5D,SAACM,EAAgCC,mBACpB,CAAKA,WAAgCA,aAClD,IAEWC,EAA+B,UAAIR,GAvCpBS,iBAwC1B,SACEH,EACAC,mBAEW,CACTA,EACIA,WACAA,aAER,gBAUoCG,wBAJAC,yBAQEC,oBA/DZH,uCAyDYI,0BAJAC,2BAQEC,uBAhEVb,2BAekBc,wBAHxBC,aAVEb,cA2DAc,wBAMyBC,yFAAAA,6BA/CrBC,gBAqCJC,mBApCUC,oBApBRnB,gBAUAoB,cAZJtB,yCAiBUuB,mBAiDNC"}
\ No newline at end of file
diff --git a/popperjs/package/dist/umd/popper-base.js b/popperjs/package/dist/umd/popper-base.js
new file mode 100644
index 0000000..873522d
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-base.js
@@ -0,0 +1,1088 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.Popper = {}));
+}(this, (function (exports) { 'use strict';
+
+  function getWindow(node) {
+    if (node == null) {
+      return window;
+    }
+
+    if (node.toString() !== '[object Window]') {
+      var ownerDocument = node.ownerDocument;
+      return ownerDocument ? ownerDocument.defaultView || window : window;
+    }
+
+    return node;
+  }
+
+  function isElement(node) {
+    var OwnElement = getWindow(node).Element;
+    return node instanceof OwnElement || node instanceof Element;
+  }
+
+  function isHTMLElement(node) {
+    var OwnElement = getWindow(node).HTMLElement;
+    return node instanceof OwnElement || node instanceof HTMLElement;
+  }
+
+  function isShadowRoot(node) {
+    // IE 11 has no ShadowRoot
+    if (typeof ShadowRoot === 'undefined') {
+      return false;
+    }
+
+    var OwnElement = getWindow(node).ShadowRoot;
+    return node instanceof OwnElement || node instanceof ShadowRoot;
+  }
+
+  var max = Math.max;
+  var min = Math.min;
+  var round = Math.round;
+
+  function getBoundingClientRect(element, includeScale) {
+    if (includeScale === void 0) {
+      includeScale = false;
+    }
+
+    var rect = element.getBoundingClientRect();
+    var scaleX = 1;
+    var scaleY = 1;
+
+    if (isHTMLElement(element) && includeScale) {
+      var offsetHeight = element.offsetHeight;
+      var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+      // Fallback to 1 in case both values are `0`
+
+      if (offsetWidth > 0) {
+        scaleX = round(rect.width) / offsetWidth || 1;
+      }
+
+      if (offsetHeight > 0) {
+        scaleY = round(rect.height) / offsetHeight || 1;
+      }
+    }
+
+    return {
+      width: rect.width / scaleX,
+      height: rect.height / scaleY,
+      top: rect.top / scaleY,
+      right: rect.right / scaleX,
+      bottom: rect.bottom / scaleY,
+      left: rect.left / scaleX,
+      x: rect.left / scaleX,
+      y: rect.top / scaleY
+    };
+  }
+
+  function getWindowScroll(node) {
+    var win = getWindow(node);
+    var scrollLeft = win.pageXOffset;
+    var scrollTop = win.pageYOffset;
+    return {
+      scrollLeft: scrollLeft,
+      scrollTop: scrollTop
+    };
+  }
+
+  function getHTMLElementScroll(element) {
+    return {
+      scrollLeft: element.scrollLeft,
+      scrollTop: element.scrollTop
+    };
+  }
+
+  function getNodeScroll(node) {
+    if (node === getWindow(node) || !isHTMLElement(node)) {
+      return getWindowScroll(node);
+    } else {
+      return getHTMLElementScroll(node);
+    }
+  }
+
+  function getNodeName(element) {
+    return element ? (element.nodeName || '').toLowerCase() : null;
+  }
+
+  function getDocumentElement(element) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+    element.document) || window.document).documentElement;
+  }
+
+  function getWindowScrollBarX(element) {
+    // If <html> has a CSS width greater than the viewport, then this will be
+    // incorrect for RTL.
+    // Popper 1 is broken in this case and never had a bug report so let's assume
+    // it's not an issue. I don't think anyone ever specifies width on <html>
+    // anyway.
+    // Browsers where the left scrollbar doesn't cause an issue report `0` for
+    // this (e.g. Edge 2019, IE11, Safari)
+    return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+  }
+
+  function getComputedStyle(element) {
+    return getWindow(element).getComputedStyle(element);
+  }
+
+  function isScrollParent(element) {
+    // Firefox wants us to check `-x` and `-y` variations as well
+    var _getComputedStyle = getComputedStyle(element),
+        overflow = _getComputedStyle.overflow,
+        overflowX = _getComputedStyle.overflowX,
+        overflowY = _getComputedStyle.overflowY;
+
+    return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+  }
+
+  function isElementScaled(element) {
+    var rect = element.getBoundingClientRect();
+    var scaleX = round(rect.width) / element.offsetWidth || 1;
+    var scaleY = round(rect.height) / element.offsetHeight || 1;
+    return scaleX !== 1 || scaleY !== 1;
+  } // Returns the composite rect of an element relative to its offsetParent.
+  // Composite means it takes into account transforms as well as layout.
+
+
+  function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+    if (isFixed === void 0) {
+      isFixed = false;
+    }
+
+    var isOffsetParentAnElement = isHTMLElement(offsetParent);
+    var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+    var documentElement = getDocumentElement(offsetParent);
+    var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+    var scroll = {
+      scrollLeft: 0,
+      scrollTop: 0
+    };
+    var offsets = {
+      x: 0,
+      y: 0
+    };
+
+    if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+      if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+      isScrollParent(documentElement)) {
+        scroll = getNodeScroll(offsetParent);
+      }
+
+      if (isHTMLElement(offsetParent)) {
+        offsets = getBoundingClientRect(offsetParent, true);
+        offsets.x += offsetParent.clientLeft;
+        offsets.y += offsetParent.clientTop;
+      } else if (documentElement) {
+        offsets.x = getWindowScrollBarX(documentElement);
+      }
+    }
+
+    return {
+      x: rect.left + scroll.scrollLeft - offsets.x,
+      y: rect.top + scroll.scrollTop - offsets.y,
+      width: rect.width,
+      height: rect.height
+    };
+  }
+
+  // means it doesn't take into account transforms.
+
+  function getLayoutRect(element) {
+    var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+    // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+    var width = element.offsetWidth;
+    var height = element.offsetHeight;
+
+    if (Math.abs(clientRect.width - width) <= 1) {
+      width = clientRect.width;
+    }
+
+    if (Math.abs(clientRect.height - height) <= 1) {
+      height = clientRect.height;
+    }
+
+    return {
+      x: element.offsetLeft,
+      y: element.offsetTop,
+      width: width,
+      height: height
+    };
+  }
+
+  function getParentNode(element) {
+    if (getNodeName(element) === 'html') {
+      return element;
+    }
+
+    return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+      // $FlowFixMe[incompatible-return]
+      // $FlowFixMe[prop-missing]
+      element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+      element.parentNode || ( // DOM Element detected
+      isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+      // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+      getDocumentElement(element) // fallback
+
+    );
+  }
+
+  function getScrollParent(node) {
+    if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+      // $FlowFixMe[incompatible-return]: assume body is always available
+      return node.ownerDocument.body;
+    }
+
+    if (isHTMLElement(node) && isScrollParent(node)) {
+      return node;
+    }
+
+    return getScrollParent(getParentNode(node));
+  }
+
+  /*
+  given a DOM element, return the list of all scroll parents, up the list of ancesors
+  until we get to the top window object. This list is what we attach scroll listeners
+  to, because if any of these parent elements scroll, we'll need to re-calculate the
+  reference element's position.
+  */
+
+  function listScrollParents(element, list) {
+    var _element$ownerDocumen;
+
+    if (list === void 0) {
+      list = [];
+    }
+
+    var scrollParent = getScrollParent(element);
+    var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+    var win = getWindow(scrollParent);
+    var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+    var updatedList = list.concat(target);
+    return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+    updatedList.concat(listScrollParents(getParentNode(target)));
+  }
+
+  function isTableElement(element) {
+    return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+  }
+
+  function getTrueOffsetParent(element) {
+    if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+    getComputedStyle(element).position === 'fixed') {
+      return null;
+    }
+
+    return element.offsetParent;
+  } // `.offsetParent` reports `null` for fixed elements, while absolute elements
+  // return the containing block
+
+
+  function getContainingBlock(element) {
+    var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+    var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+    if (isIE && isHTMLElement(element)) {
+      // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+      var elementCss = getComputedStyle(element);
+
+      if (elementCss.position === 'fixed') {
+        return null;
+      }
+    }
+
+    var currentNode = getParentNode(element);
+
+    while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+      var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+      // create a containing block.
+      // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+      if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+        return currentNode;
+      } else {
+        currentNode = currentNode.parentNode;
+      }
+    }
+
+    return null;
+  } // Gets the closest ancestor positioned element. Handles some edge cases,
+  // such as table ancestors and cross browser bugs.
+
+
+  function getOffsetParent(element) {
+    var window = getWindow(element);
+    var offsetParent = getTrueOffsetParent(element);
+
+    while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+      offsetParent = getTrueOffsetParent(offsetParent);
+    }
+
+    if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+      return window;
+    }
+
+    return offsetParent || getContainingBlock(element) || window;
+  }
+
+  var top = 'top';
+  var bottom = 'bottom';
+  var right = 'right';
+  var left = 'left';
+  var auto = 'auto';
+  var basePlacements = [top, bottom, right, left];
+  var start = 'start';
+  var end = 'end';
+  var clippingParents = 'clippingParents';
+  var viewport = 'viewport';
+  var popper = 'popper';
+  var reference = 'reference';
+
+  var beforeRead = 'beforeRead';
+  var read = 'read';
+  var afterRead = 'afterRead'; // pure-logic modifiers
+
+  var beforeMain = 'beforeMain';
+  var main = 'main';
+  var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+  var beforeWrite = 'beforeWrite';
+  var write = 'write';
+  var afterWrite = 'afterWrite';
+  var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+  function order(modifiers) {
+    var map = new Map();
+    var visited = new Set();
+    var result = [];
+    modifiers.forEach(function (modifier) {
+      map.set(modifier.name, modifier);
+    }); // On visiting object, check for its dependencies and visit them recursively
+
+    function sort(modifier) {
+      visited.add(modifier.name);
+      var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+      requires.forEach(function (dep) {
+        if (!visited.has(dep)) {
+          var depModifier = map.get(dep);
+
+          if (depModifier) {
+            sort(depModifier);
+          }
+        }
+      });
+      result.push(modifier);
+    }
+
+    modifiers.forEach(function (modifier) {
+      if (!visited.has(modifier.name)) {
+        // check for visited object
+        sort(modifier);
+      }
+    });
+    return result;
+  }
+
+  function orderModifiers(modifiers) {
+    // order based on dependencies
+    var orderedModifiers = order(modifiers); // order based on phase
+
+    return modifierPhases.reduce(function (acc, phase) {
+      return acc.concat(orderedModifiers.filter(function (modifier) {
+        return modifier.phase === phase;
+      }));
+    }, []);
+  }
+
+  function debounce(fn) {
+    var pending;
+    return function () {
+      if (!pending) {
+        pending = new Promise(function (resolve) {
+          Promise.resolve().then(function () {
+            pending = undefined;
+            resolve(fn());
+          });
+        });
+      }
+
+      return pending;
+    };
+  }
+
+  function format(str) {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    return [].concat(args).reduce(function (p, c) {
+      return p.replace(/%s/, c);
+    }, str);
+  }
+
+  var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+  var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+  var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+  function validateModifiers(modifiers) {
+    modifiers.forEach(function (modifier) {
+      [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+      .filter(function (value, index, self) {
+        return self.indexOf(value) === index;
+      }).forEach(function (key) {
+        switch (key) {
+          case 'name':
+            if (typeof modifier.name !== 'string') {
+              console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+            }
+
+            break;
+
+          case 'enabled':
+            if (typeof modifier.enabled !== 'boolean') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+            }
+
+            break;
+
+          case 'phase':
+            if (modifierPhases.indexOf(modifier.phase) < 0) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+            }
+
+            break;
+
+          case 'fn':
+            if (typeof modifier.fn !== 'function') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+            }
+
+            break;
+
+          case 'effect':
+            if (modifier.effect != null && typeof modifier.effect !== 'function') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+            }
+
+            break;
+
+          case 'requires':
+            if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+            }
+
+            break;
+
+          case 'requiresIfExists':
+            if (!Array.isArray(modifier.requiresIfExists)) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+            }
+
+            break;
+
+          case 'options':
+          case 'data':
+            break;
+
+          default:
+            console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+              return "\"" + s + "\"";
+            }).join(', ') + "; but \"" + key + "\" was provided.");
+        }
+
+        modifier.requires && modifier.requires.forEach(function (requirement) {
+          if (modifiers.find(function (mod) {
+            return mod.name === requirement;
+          }) == null) {
+            console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+          }
+        });
+      });
+    });
+  }
+
+  function uniqueBy(arr, fn) {
+    var identifiers = new Set();
+    return arr.filter(function (item) {
+      var identifier = fn(item);
+
+      if (!identifiers.has(identifier)) {
+        identifiers.add(identifier);
+        return true;
+      }
+    });
+  }
+
+  function getBasePlacement(placement) {
+    return placement.split('-')[0];
+  }
+
+  function mergeByName(modifiers) {
+    var merged = modifiers.reduce(function (merged, current) {
+      var existing = merged[current.name];
+      merged[current.name] = existing ? Object.assign({}, existing, current, {
+        options: Object.assign({}, existing.options, current.options),
+        data: Object.assign({}, existing.data, current.data)
+      }) : current;
+      return merged;
+    }, {}); // IE11 does not support Object.values
+
+    return Object.keys(merged).map(function (key) {
+      return merged[key];
+    });
+  }
+
+  function getViewportRect(element) {
+    var win = getWindow(element);
+    var html = getDocumentElement(element);
+    var visualViewport = win.visualViewport;
+    var width = html.clientWidth;
+    var height = html.clientHeight;
+    var x = 0;
+    var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+    // can be obscured underneath it.
+    // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+    // if it isn't open, so if this isn't available, the popper will be detected
+    // to overflow the bottom of the screen too early.
+
+    if (visualViewport) {
+      width = visualViewport.width;
+      height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+      // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+      // errors due to floating point numbers, so we need to check precision.
+      // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+      // Feature detection fails in mobile emulation mode in Chrome.
+      // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+      // 0.001
+      // Fallback here: "Not Safari" userAgent
+
+      if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+        x = visualViewport.offsetLeft;
+        y = visualViewport.offsetTop;
+      }
+    }
+
+    return {
+      width: width,
+      height: height,
+      x: x + getWindowScrollBarX(element),
+      y: y
+    };
+  }
+
+  // of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+  function getDocumentRect(element) {
+    var _element$ownerDocumen;
+
+    var html = getDocumentElement(element);
+    var winScroll = getWindowScroll(element);
+    var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+    var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+    var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+    var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+    var y = -winScroll.scrollTop;
+
+    if (getComputedStyle(body || html).direction === 'rtl') {
+      x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+    }
+
+    return {
+      width: width,
+      height: height,
+      x: x,
+      y: y
+    };
+  }
+
+  function contains(parent, child) {
+    var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+    if (parent.contains(child)) {
+      return true;
+    } // then fallback to custom implementation with Shadow DOM support
+    else if (rootNode && isShadowRoot(rootNode)) {
+        var next = child;
+
+        do {
+          if (next && parent.isSameNode(next)) {
+            return true;
+          } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+          next = next.parentNode || next.host;
+        } while (next);
+      } // Give up, the result is false
+
+
+    return false;
+  }
+
+  function rectToClientRect(rect) {
+    return Object.assign({}, rect, {
+      left: rect.x,
+      top: rect.y,
+      right: rect.x + rect.width,
+      bottom: rect.y + rect.height
+    });
+  }
+
+  function getInnerBoundingClientRect(element) {
+    var rect = getBoundingClientRect(element);
+    rect.top = rect.top + element.clientTop;
+    rect.left = rect.left + element.clientLeft;
+    rect.bottom = rect.top + element.clientHeight;
+    rect.right = rect.left + element.clientWidth;
+    rect.width = element.clientWidth;
+    rect.height = element.clientHeight;
+    rect.x = rect.left;
+    rect.y = rect.top;
+    return rect;
+  }
+
+  function getClientRectFromMixedType(element, clippingParent) {
+    return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+  } // A "clipping parent" is an overflowable container with the characteristic of
+  // clipping (or hiding) overflowing elements with a position different from
+  // `initial`
+
+
+  function getClippingParents(element) {
+    var clippingParents = listScrollParents(getParentNode(element));
+    var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+    var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+    if (!isElement(clipperElement)) {
+      return [];
+    } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+    return clippingParents.filter(function (clippingParent) {
+      return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+    });
+  } // Gets the maximum area that the element is visible in due to any number of
+  // clipping parents
+
+
+  function getClippingRect(element, boundary, rootBoundary) {
+    var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+    var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+    var firstClippingParent = clippingParents[0];
+    var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+      var rect = getClientRectFromMixedType(element, clippingParent);
+      accRect.top = max(rect.top, accRect.top);
+      accRect.right = min(rect.right, accRect.right);
+      accRect.bottom = min(rect.bottom, accRect.bottom);
+      accRect.left = max(rect.left, accRect.left);
+      return accRect;
+    }, getClientRectFromMixedType(element, firstClippingParent));
+    clippingRect.width = clippingRect.right - clippingRect.left;
+    clippingRect.height = clippingRect.bottom - clippingRect.top;
+    clippingRect.x = clippingRect.left;
+    clippingRect.y = clippingRect.top;
+    return clippingRect;
+  }
+
+  function getVariation(placement) {
+    return placement.split('-')[1];
+  }
+
+  function getMainAxisFromPlacement(placement) {
+    return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+  }
+
+  function computeOffsets(_ref) {
+    var reference = _ref.reference,
+        element = _ref.element,
+        placement = _ref.placement;
+    var basePlacement = placement ? getBasePlacement(placement) : null;
+    var variation = placement ? getVariation(placement) : null;
+    var commonX = reference.x + reference.width / 2 - element.width / 2;
+    var commonY = reference.y + reference.height / 2 - element.height / 2;
+    var offsets;
+
+    switch (basePlacement) {
+      case top:
+        offsets = {
+          x: commonX,
+          y: reference.y - element.height
+        };
+        break;
+
+      case bottom:
+        offsets = {
+          x: commonX,
+          y: reference.y + reference.height
+        };
+        break;
+
+      case right:
+        offsets = {
+          x: reference.x + reference.width,
+          y: commonY
+        };
+        break;
+
+      case left:
+        offsets = {
+          x: reference.x - element.width,
+          y: commonY
+        };
+        break;
+
+      default:
+        offsets = {
+          x: reference.x,
+          y: reference.y
+        };
+    }
+
+    var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+    if (mainAxis != null) {
+      var len = mainAxis === 'y' ? 'height' : 'width';
+
+      switch (variation) {
+        case start:
+          offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+          break;
+
+        case end:
+          offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+          break;
+      }
+    }
+
+    return offsets;
+  }
+
+  function getFreshSideObject() {
+    return {
+      top: 0,
+      right: 0,
+      bottom: 0,
+      left: 0
+    };
+  }
+
+  function mergePaddingObject(paddingObject) {
+    return Object.assign({}, getFreshSideObject(), paddingObject);
+  }
+
+  function expandToHashMap(value, keys) {
+    return keys.reduce(function (hashMap, key) {
+      hashMap[key] = value;
+      return hashMap;
+    }, {});
+  }
+
+  function detectOverflow(state, options) {
+    if (options === void 0) {
+      options = {};
+    }
+
+    var _options = options,
+        _options$placement = _options.placement,
+        placement = _options$placement === void 0 ? state.placement : _options$placement,
+        _options$boundary = _options.boundary,
+        boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+        _options$rootBoundary = _options.rootBoundary,
+        rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+        _options$elementConte = _options.elementContext,
+        elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+        _options$altBoundary = _options.altBoundary,
+        altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+        _options$padding = _options.padding,
+        padding = _options$padding === void 0 ? 0 : _options$padding;
+    var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+    var altContext = elementContext === popper ? reference : popper;
+    var popperRect = state.rects.popper;
+    var element = state.elements[altBoundary ? altContext : elementContext];
+    var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+    var referenceClientRect = getBoundingClientRect(state.elements.reference);
+    var popperOffsets = computeOffsets({
+      reference: referenceClientRect,
+      element: popperRect,
+      strategy: 'absolute',
+      placement: placement
+    });
+    var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+    var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+    // 0 or negative = within the clipping rect
+
+    var overflowOffsets = {
+      top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+      bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+      left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+      right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+    };
+    var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+    if (elementContext === popper && offsetData) {
+      var offset = offsetData[placement];
+      Object.keys(overflowOffsets).forEach(function (key) {
+        var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+        var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+        overflowOffsets[key] += offset[axis] * multiply;
+      });
+    }
+
+    return overflowOffsets;
+  }
+
+  var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+  var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+  var DEFAULT_OPTIONS = {
+    placement: 'bottom',
+    modifiers: [],
+    strategy: 'absolute'
+  };
+
+  function areValidElements() {
+    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+      args[_key] = arguments[_key];
+    }
+
+    return !args.some(function (element) {
+      return !(element && typeof element.getBoundingClientRect === 'function');
+    });
+  }
+
+  function popperGenerator(generatorOptions) {
+    if (generatorOptions === void 0) {
+      generatorOptions = {};
+    }
+
+    var _generatorOptions = generatorOptions,
+        _generatorOptions$def = _generatorOptions.defaultModifiers,
+        defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+        _generatorOptions$def2 = _generatorOptions.defaultOptions,
+        defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+    return function createPopper(reference, popper, options) {
+      if (options === void 0) {
+        options = defaultOptions;
+      }
+
+      var state = {
+        placement: 'bottom',
+        orderedModifiers: [],
+        options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+        modifiersData: {},
+        elements: {
+          reference: reference,
+          popper: popper
+        },
+        attributes: {},
+        styles: {}
+      };
+      var effectCleanupFns = [];
+      var isDestroyed = false;
+      var instance = {
+        state: state,
+        setOptions: function setOptions(setOptionsAction) {
+          var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+          cleanupModifierEffects();
+          state.options = Object.assign({}, defaultOptions, state.options, options);
+          state.scrollParents = {
+            reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+            popper: listScrollParents(popper)
+          }; // Orders the modifiers based on their dependencies and `phase`
+          // properties
+
+          var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+          state.orderedModifiers = orderedModifiers.filter(function (m) {
+            return m.enabled;
+          }); // Validate the provided modifiers so that the consumer will get warned
+          // if one of the modifiers is invalid for any reason
+
+          {
+            var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+              var name = _ref.name;
+              return name;
+            });
+            validateModifiers(modifiers);
+
+            if (getBasePlacement(state.options.placement) === auto) {
+              var flipModifier = state.orderedModifiers.find(function (_ref2) {
+                var name = _ref2.name;
+                return name === 'flip';
+              });
+
+              if (!flipModifier) {
+                console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+              }
+            }
+
+            var _getComputedStyle = getComputedStyle(popper),
+                marginTop = _getComputedStyle.marginTop,
+                marginRight = _getComputedStyle.marginRight,
+                marginBottom = _getComputedStyle.marginBottom,
+                marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+            // cause bugs with positioning, so we'll warn the consumer
+
+
+            if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+              return parseFloat(margin);
+            })) {
+              console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+            }
+          }
+
+          runModifierEffects();
+          return instance.update();
+        },
+        // Sync update – it will always be executed, even if not necessary. This
+        // is useful for low frequency updates where sync behavior simplifies the
+        // logic.
+        // For high frequency updates (e.g. `resize` and `scroll` events), always
+        // prefer the async Popper#update method
+        forceUpdate: function forceUpdate() {
+          if (isDestroyed) {
+            return;
+          }
+
+          var _state$elements = state.elements,
+              reference = _state$elements.reference,
+              popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+          // anymore
+
+          if (!areValidElements(reference, popper)) {
+            {
+              console.error(INVALID_ELEMENT_ERROR);
+            }
+
+            return;
+          } // Store the reference and popper rects to be read by modifiers
+
+
+          state.rects = {
+            reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+            popper: getLayoutRect(popper)
+          }; // Modifiers have the ability to reset the current update cycle. The
+          // most common use case for this is the `flip` modifier changing the
+          // placement, which then needs to re-run all the modifiers, because the
+          // logic was previously ran for the previous placement and is therefore
+          // stale/incorrect
+
+          state.reset = false;
+          state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+          // is filled with the initial data specified by the modifier. This means
+          // it doesn't persist and is fresh on each update.
+          // To ensure persistent data, use `${name}#persistent`
+
+          state.orderedModifiers.forEach(function (modifier) {
+            return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+          });
+          var __debug_loops__ = 0;
+
+          for (var index = 0; index < state.orderedModifiers.length; index++) {
+            {
+              __debug_loops__ += 1;
+
+              if (__debug_loops__ > 100) {
+                console.error(INFINITE_LOOP_ERROR);
+                break;
+              }
+            }
+
+            if (state.reset === true) {
+              state.reset = false;
+              index = -1;
+              continue;
+            }
+
+            var _state$orderedModifie = state.orderedModifiers[index],
+                fn = _state$orderedModifie.fn,
+                _state$orderedModifie2 = _state$orderedModifie.options,
+                _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+                name = _state$orderedModifie.name;
+
+            if (typeof fn === 'function') {
+              state = fn({
+                state: state,
+                options: _options,
+                name: name,
+                instance: instance
+              }) || state;
+            }
+          }
+        },
+        // Async and optimistically optimized update – it will not be executed if
+        // not necessary (debounced to run at most once-per-tick)
+        update: debounce(function () {
+          return new Promise(function (resolve) {
+            instance.forceUpdate();
+            resolve(state);
+          });
+        }),
+        destroy: function destroy() {
+          cleanupModifierEffects();
+          isDestroyed = true;
+        }
+      };
+
+      if (!areValidElements(reference, popper)) {
+        {
+          console.error(INVALID_ELEMENT_ERROR);
+        }
+
+        return instance;
+      }
+
+      instance.setOptions(options).then(function (state) {
+        if (!isDestroyed && options.onFirstUpdate) {
+          options.onFirstUpdate(state);
+        }
+      }); // Modifiers have the ability to execute arbitrary code before the first
+      // update cycle runs. They will be executed in the same order as the update
+      // cycle. This is useful when a modifier adds some persistent data that
+      // other modifiers need to use, but the modifier is run after the dependent
+      // one.
+
+      function runModifierEffects() {
+        state.orderedModifiers.forEach(function (_ref3) {
+          var name = _ref3.name,
+              _ref3$options = _ref3.options,
+              options = _ref3$options === void 0 ? {} : _ref3$options,
+              effect = _ref3.effect;
+
+          if (typeof effect === 'function') {
+            var cleanupFn = effect({
+              state: state,
+              name: name,
+              instance: instance,
+              options: options
+            });
+
+            var noopFn = function noopFn() {};
+
+            effectCleanupFns.push(cleanupFn || noopFn);
+          }
+        });
+      }
+
+      function cleanupModifierEffects() {
+        effectCleanupFns.forEach(function (fn) {
+          return fn();
+        });
+        effectCleanupFns = [];
+      }
+
+      return instance;
+    };
+  }
+  var createPopper = /*#__PURE__*/popperGenerator(); // eslint-disable-next-line import/no-unused-modules
+
+  exports.createPopper = createPopper;
+  exports.detectOverflow = detectOverflow;
+  exports.popperGenerator = popperGenerator;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
+//# sourceMappingURL=popper-base.js.map
diff --git a/popperjs/package/dist/umd/popper-base.js.map b/popperjs/package/dist/umd/popper-base.js.map
new file mode 100644
index 0000000..3a258a8
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-base.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-base.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/utils/math.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/isTableElement.js","../../src/dom-utils/getOffsetParent.js","../../src/enums.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/format.js","../../src/utils/validateModifiers.js","../../src/utils/uniqueBy.js","../../src/utils/getBasePlacement.js","../../src/utils/mergeByName.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/utils/computeOffsets.js","../../src/utils/getFreshSideObject.js","../../src/utils/mergePaddingObject.js","../../src/utils/expandToHashMap.js","../../src/utils/detectOverflow.js","../../src/createPopper.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\n\nexport default function format(str: string, ...args: Array<string>) {\n  return [...args].reduce((p, c) => p.replace(/%s/, c), str);\n}\n","// @flow\nimport format from './format';\nimport { modifierPhases } from '../enums';\n\nconst INVALID_MODIFIER_ERROR =\n  'Popper: modifier \"%s\" provided an invalid %s property, expected %s but got %s';\nconst MISSING_DEPENDENCY_ERROR =\n  'Popper: modifier \"%s\" requires \"%s\", but \"%s\" modifier is not available';\nconst VALID_PROPERTIES = [\n  'name',\n  'enabled',\n  'phase',\n  'fn',\n  'effect',\n  'requires',\n  'options',\n];\n\nexport default function validateModifiers(modifiers: Array<any>): void {\n  modifiers.forEach((modifier) => {\n    [...Object.keys(modifier), ...VALID_PROPERTIES]\n      // IE11-compatible replacement for `new Set(iterable)`\n      .filter((value, index, self) => self.indexOf(value) === index)\n      .forEach((key) => {\n        switch (key) {\n          case 'name':\n            if (typeof modifier.name !== 'string') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  String(modifier.name),\n                  '\"name\"',\n                  '\"string\"',\n                  `\"${String(modifier.name)}\"`\n                )\n              );\n            }\n            break;\n          case 'enabled':\n            if (typeof modifier.enabled !== 'boolean') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"enabled\"',\n                  '\"boolean\"',\n                  `\"${String(modifier.enabled)}\"`\n                )\n              );\n            }\n            break;\n          case 'phase':\n            if (modifierPhases.indexOf(modifier.phase) < 0) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"phase\"',\n                  `either ${modifierPhases.join(', ')}`,\n                  `\"${String(modifier.phase)}\"`\n                )\n              );\n            }\n            break;\n          case 'fn':\n            if (typeof modifier.fn !== 'function') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"fn\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'effect':\n            if (\n              modifier.effect != null &&\n              typeof modifier.effect !== 'function'\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"effect\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'requires':\n            if (\n              modifier.requires != null &&\n              !Array.isArray(modifier.requires)\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requires\"',\n                  '\"array\"',\n                  `\"${String(modifier.requires)}\"`\n                )\n              );\n            }\n            break;\n          case 'requiresIfExists':\n            if (!Array.isArray(modifier.requiresIfExists)) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requiresIfExists\"',\n                  '\"array\"',\n                  `\"${String(modifier.requiresIfExists)}\"`\n                )\n              );\n            }\n            break;\n          case 'options':\n          case 'data':\n            break;\n          default:\n            console.error(\n              `PopperJS: an invalid property has been provided to the \"${\n                modifier.name\n              }\" modifier, valid properties are ${VALID_PROPERTIES.map(\n                (s) => `\"${s}\"`\n              ).join(', ')}; but \"${key}\" was provided.`\n            );\n        }\n\n        modifier.requires &&\n          modifier.requires.forEach((requirement) => {\n            if (modifiers.find((mod) => mod.name === requirement) == null) {\n              console.error(\n                format(\n                  MISSING_DEPENDENCY_ERROR,\n                  String(modifier.name),\n                  requirement,\n                  requirement\n                )\n              );\n            }\n          });\n      });\n  });\n}\n","// @flow\n\nexport default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {\n  const identifiers = new Set();\n\n  return arr.filter(item => {\n    const identifier = fn(item);\n\n    if (!identifiers.has(identifier)) {\n      identifiers.add(identifier);\n      return true;\n    }\n  });\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 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'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow 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diff --git a/popperjs/package/dist/umd/popper-base.min.js b/popperjs/package/dist/umd/popper-base.min.js
new file mode 100644
index 0000000..1d1229e
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-base.min.js
@@ -0,0 +1,6 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
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+//# sourceMappingURL=popper-base.min.js.map
diff --git a/popperjs/package/dist/umd/popper-base.min.js.flow b/popperjs/package/dist/umd/popper-base.min.js.flow
new file mode 100644
index 0000000..22d88eb
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-base.min.js.flow
@@ -0,0 +1,3 @@
+// @flow
+
+export * from '../../lib/popper-base.js'
diff --git a/popperjs/package/dist/umd/popper-base.min.js.map b/popperjs/package/dist/umd/popper-base.min.js.map
new file mode 100644
index 0000000..03e33fa
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-base.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-base.min.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/getOffsetParent.js","../../src/dom-utils/isTableElement.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/enums.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/createPopper.js","../../src/utils/mergeByName.js","../../src/utils/math.js","../../src/utils/detectOverflow.js","../../src/utils/getFreshSideObject.js","../../src/utils/expandToHashMap.js","../../src/utils/computeOffsets.js","../../src/utils/getBasePlacement.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow };\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { State, SideObject, Padding } from '../types';\nimport type { Placement, Boundary, RootBoundary, Context } from '../enums';\nimport getClippingRect from '../dom-utils/getClippingRect';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getBoundingClientRect from '../dom-utils/getBoundingClientRect';\nimport computeOffsets from './computeOffsets';\nimport rectToClientRect from './rectToClientRect';\nimport {\n  clippingParents,\n  reference,\n  popper,\n  bottom,\n  top,\n  right,\n  basePlacements,\n  viewport,\n} from '../enums';\nimport { isElement } from '../dom-utils/instanceOf';\nimport mergePaddingObject from './mergePaddingObject';\nimport expandToHashMap from './expandToHashMap';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  placement: Placement,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  elementContext: Context,\n  altBoundary: boolean,\n  padding: Padding,\n};\n\nexport default function detectOverflow(\n  state: State,\n  options: $Shape<Options> = {}\n): SideObject {\n  const {\n    placement = state.placement,\n    boundary = clippingParents,\n    rootBoundary = viewport,\n    elementContext = popper,\n    altBoundary = false,\n    padding = 0,\n  } = options;\n\n  const paddingObject = mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n\n  const altContext = elementContext === popper ? reference : popper;\n\n  const popperRect = state.rects.popper;\n  const element = state.elements[altBoundary ? altContext : elementContext];\n\n  const clippingClientRect = getClippingRect(\n    isElement(element)\n      ? element\n      : element.contextElement || getDocumentElement(state.elements.popper),\n    boundary,\n    rootBoundary\n  );\n\n  const referenceClientRect = getBoundingClientRect(state.elements.reference);\n\n  const popperOffsets = computeOffsets({\n    reference: referenceClientRect,\n    element: popperRect,\n    strategy: 'absolute',\n    placement,\n  });\n\n  const popperClientRect = rectToClientRect({\n    ...popperRect,\n    ...popperOffsets,\n  });\n\n  const elementClientRect =\n    elementContext === popper ? popperClientRect : referenceClientRect;\n\n  // positive = overflowing the clipping rect\n  // 0 or negative = within the clipping rect\n  const overflowOffsets = {\n    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n    bottom:\n      elementClientRect.bottom -\n      clippingClientRect.bottom +\n      paddingObject.bottom,\n    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n    right:\n      elementClientRect.right - clippingClientRect.right + paddingObject.right,\n  };\n\n  const offsetData = state.modifiersData.offset;\n\n  // Offsets can be applied only to the popper element\n  if (elementContext === popper && offsetData) {\n    const offset = offsetData[placement];\n\n    Object.keys(overflowOffsets).forEach((key) => {\n      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type { SideObject } from '../types';\n\nexport default function getFreshSideObject(): SideObject {\n  return {\n    top: 0,\n    right: 0,\n    bottom: 0,\n    left: 0,\n  };\n}\n","// @flow\n\nexport default function expandToHashMap<\n  T: number | string | boolean,\n  K: string\n>(value: T, keys: Array<K>): { [key: string]: T } {\n  return keys.reduce((hashMap, key) => {\n    hashMap[key] = value;\n    return hashMap;\n  }, {});\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 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diff --git a/popperjs/package/dist/umd/popper-lite.js b/popperjs/package/dist/umd/popper-lite.js
new file mode 100644
index 0000000..8646c2d
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-lite.js
@@ -0,0 +1,1402 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.Popper = {}));
+}(this, (function (exports) { 'use strict';
+
+  function getWindow(node) {
+    if (node == null) {
+      return window;
+    }
+
+    if (node.toString() !== '[object Window]') {
+      var ownerDocument = node.ownerDocument;
+      return ownerDocument ? ownerDocument.defaultView || window : window;
+    }
+
+    return node;
+  }
+
+  function isElement(node) {
+    var OwnElement = getWindow(node).Element;
+    return node instanceof OwnElement || node instanceof Element;
+  }
+
+  function isHTMLElement(node) {
+    var OwnElement = getWindow(node).HTMLElement;
+    return node instanceof OwnElement || node instanceof HTMLElement;
+  }
+
+  function isShadowRoot(node) {
+    // IE 11 has no ShadowRoot
+    if (typeof ShadowRoot === 'undefined') {
+      return false;
+    }
+
+    var OwnElement = getWindow(node).ShadowRoot;
+    return node instanceof OwnElement || node instanceof ShadowRoot;
+  }
+
+  var max = Math.max;
+  var min = Math.min;
+  var round = Math.round;
+
+  function getBoundingClientRect(element, includeScale) {
+    if (includeScale === void 0) {
+      includeScale = false;
+    }
+
+    var rect = element.getBoundingClientRect();
+    var scaleX = 1;
+    var scaleY = 1;
+
+    if (isHTMLElement(element) && includeScale) {
+      var offsetHeight = element.offsetHeight;
+      var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+      // Fallback to 1 in case both values are `0`
+
+      if (offsetWidth > 0) {
+        scaleX = round(rect.width) / offsetWidth || 1;
+      }
+
+      if (offsetHeight > 0) {
+        scaleY = round(rect.height) / offsetHeight || 1;
+      }
+    }
+
+    return {
+      width: rect.width / scaleX,
+      height: rect.height / scaleY,
+      top: rect.top / scaleY,
+      right: rect.right / scaleX,
+      bottom: rect.bottom / scaleY,
+      left: rect.left / scaleX,
+      x: rect.left / scaleX,
+      y: rect.top / scaleY
+    };
+  }
+
+  function getWindowScroll(node) {
+    var win = getWindow(node);
+    var scrollLeft = win.pageXOffset;
+    var scrollTop = win.pageYOffset;
+    return {
+      scrollLeft: scrollLeft,
+      scrollTop: scrollTop
+    };
+  }
+
+  function getHTMLElementScroll(element) {
+    return {
+      scrollLeft: element.scrollLeft,
+      scrollTop: element.scrollTop
+    };
+  }
+
+  function getNodeScroll(node) {
+    if (node === getWindow(node) || !isHTMLElement(node)) {
+      return getWindowScroll(node);
+    } else {
+      return getHTMLElementScroll(node);
+    }
+  }
+
+  function getNodeName(element) {
+    return element ? (element.nodeName || '').toLowerCase() : null;
+  }
+
+  function getDocumentElement(element) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+    element.document) || window.document).documentElement;
+  }
+
+  function getWindowScrollBarX(element) {
+    // If <html> has a CSS width greater than the viewport, then this will be
+    // incorrect for RTL.
+    // Popper 1 is broken in this case and never had a bug report so let's assume
+    // it's not an issue. I don't think anyone ever specifies width on <html>
+    // anyway.
+    // Browsers where the left scrollbar doesn't cause an issue report `0` for
+    // this (e.g. Edge 2019, IE11, Safari)
+    return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+  }
+
+  function getComputedStyle(element) {
+    return getWindow(element).getComputedStyle(element);
+  }
+
+  function isScrollParent(element) {
+    // Firefox wants us to check `-x` and `-y` variations as well
+    var _getComputedStyle = getComputedStyle(element),
+        overflow = _getComputedStyle.overflow,
+        overflowX = _getComputedStyle.overflowX,
+        overflowY = _getComputedStyle.overflowY;
+
+    return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+  }
+
+  function isElementScaled(element) {
+    var rect = element.getBoundingClientRect();
+    var scaleX = round(rect.width) / element.offsetWidth || 1;
+    var scaleY = round(rect.height) / element.offsetHeight || 1;
+    return scaleX !== 1 || scaleY !== 1;
+  } // Returns the composite rect of an element relative to its offsetParent.
+  // Composite means it takes into account transforms as well as layout.
+
+
+  function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+    if (isFixed === void 0) {
+      isFixed = false;
+    }
+
+    var isOffsetParentAnElement = isHTMLElement(offsetParent);
+    var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+    var documentElement = getDocumentElement(offsetParent);
+    var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+    var scroll = {
+      scrollLeft: 0,
+      scrollTop: 0
+    };
+    var offsets = {
+      x: 0,
+      y: 0
+    };
+
+    if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+      if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+      isScrollParent(documentElement)) {
+        scroll = getNodeScroll(offsetParent);
+      }
+
+      if (isHTMLElement(offsetParent)) {
+        offsets = getBoundingClientRect(offsetParent, true);
+        offsets.x += offsetParent.clientLeft;
+        offsets.y += offsetParent.clientTop;
+      } else if (documentElement) {
+        offsets.x = getWindowScrollBarX(documentElement);
+      }
+    }
+
+    return {
+      x: rect.left + scroll.scrollLeft - offsets.x,
+      y: rect.top + scroll.scrollTop - offsets.y,
+      width: rect.width,
+      height: rect.height
+    };
+  }
+
+  // means it doesn't take into account transforms.
+
+  function getLayoutRect(element) {
+    var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+    // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+    var width = element.offsetWidth;
+    var height = element.offsetHeight;
+
+    if (Math.abs(clientRect.width - width) <= 1) {
+      width = clientRect.width;
+    }
+
+    if (Math.abs(clientRect.height - height) <= 1) {
+      height = clientRect.height;
+    }
+
+    return {
+      x: element.offsetLeft,
+      y: element.offsetTop,
+      width: width,
+      height: height
+    };
+  }
+
+  function getParentNode(element) {
+    if (getNodeName(element) === 'html') {
+      return element;
+    }
+
+    return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+      // $FlowFixMe[incompatible-return]
+      // $FlowFixMe[prop-missing]
+      element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+      element.parentNode || ( // DOM Element detected
+      isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+      // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+      getDocumentElement(element) // fallback
+
+    );
+  }
+
+  function getScrollParent(node) {
+    if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+      // $FlowFixMe[incompatible-return]: assume body is always available
+      return node.ownerDocument.body;
+    }
+
+    if (isHTMLElement(node) && isScrollParent(node)) {
+      return node;
+    }
+
+    return getScrollParent(getParentNode(node));
+  }
+
+  /*
+  given a DOM element, return the list of all scroll parents, up the list of ancesors
+  until we get to the top window object. This list is what we attach scroll listeners
+  to, because if any of these parent elements scroll, we'll need to re-calculate the
+  reference element's position.
+  */
+
+  function listScrollParents(element, list) {
+    var _element$ownerDocumen;
+
+    if (list === void 0) {
+      list = [];
+    }
+
+    var scrollParent = getScrollParent(element);
+    var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+    var win = getWindow(scrollParent);
+    var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+    var updatedList = list.concat(target);
+    return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+    updatedList.concat(listScrollParents(getParentNode(target)));
+  }
+
+  function isTableElement(element) {
+    return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+  }
+
+  function getTrueOffsetParent(element) {
+    if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+    getComputedStyle(element).position === 'fixed') {
+      return null;
+    }
+
+    return element.offsetParent;
+  } // `.offsetParent` reports `null` for fixed elements, while absolute elements
+  // return the containing block
+
+
+  function getContainingBlock(element) {
+    var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+    var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+    if (isIE && isHTMLElement(element)) {
+      // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+      var elementCss = getComputedStyle(element);
+
+      if (elementCss.position === 'fixed') {
+        return null;
+      }
+    }
+
+    var currentNode = getParentNode(element);
+
+    while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+      var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+      // create a containing block.
+      // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+      if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+        return currentNode;
+      } else {
+        currentNode = currentNode.parentNode;
+      }
+    }
+
+    return null;
+  } // Gets the closest ancestor positioned element. Handles some edge cases,
+  // such as table ancestors and cross browser bugs.
+
+
+  function getOffsetParent(element) {
+    var window = getWindow(element);
+    var offsetParent = getTrueOffsetParent(element);
+
+    while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+      offsetParent = getTrueOffsetParent(offsetParent);
+    }
+
+    if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+      return window;
+    }
+
+    return offsetParent || getContainingBlock(element) || window;
+  }
+
+  var top = 'top';
+  var bottom = 'bottom';
+  var right = 'right';
+  var left = 'left';
+  var auto = 'auto';
+  var basePlacements = [top, bottom, right, left];
+  var start = 'start';
+  var end = 'end';
+  var clippingParents = 'clippingParents';
+  var viewport = 'viewport';
+  var popper = 'popper';
+  var reference = 'reference';
+
+  var beforeRead = 'beforeRead';
+  var read = 'read';
+  var afterRead = 'afterRead'; // pure-logic modifiers
+
+  var beforeMain = 'beforeMain';
+  var main = 'main';
+  var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+  var beforeWrite = 'beforeWrite';
+  var write = 'write';
+  var afterWrite = 'afterWrite';
+  var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+  function order(modifiers) {
+    var map = new Map();
+    var visited = new Set();
+    var result = [];
+    modifiers.forEach(function (modifier) {
+      map.set(modifier.name, modifier);
+    }); // On visiting object, check for its dependencies and visit them recursively
+
+    function sort(modifier) {
+      visited.add(modifier.name);
+      var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+      requires.forEach(function (dep) {
+        if (!visited.has(dep)) {
+          var depModifier = map.get(dep);
+
+          if (depModifier) {
+            sort(depModifier);
+          }
+        }
+      });
+      result.push(modifier);
+    }
+
+    modifiers.forEach(function (modifier) {
+      if (!visited.has(modifier.name)) {
+        // check for visited object
+        sort(modifier);
+      }
+    });
+    return result;
+  }
+
+  function orderModifiers(modifiers) {
+    // order based on dependencies
+    var orderedModifiers = order(modifiers); // order based on phase
+
+    return modifierPhases.reduce(function (acc, phase) {
+      return acc.concat(orderedModifiers.filter(function (modifier) {
+        return modifier.phase === phase;
+      }));
+    }, []);
+  }
+
+  function debounce(fn) {
+    var pending;
+    return function () {
+      if (!pending) {
+        pending = new Promise(function (resolve) {
+          Promise.resolve().then(function () {
+            pending = undefined;
+            resolve(fn());
+          });
+        });
+      }
+
+      return pending;
+    };
+  }
+
+  function format(str) {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    return [].concat(args).reduce(function (p, c) {
+      return p.replace(/%s/, c);
+    }, str);
+  }
+
+  var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+  var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+  var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+  function validateModifiers(modifiers) {
+    modifiers.forEach(function (modifier) {
+      [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+      .filter(function (value, index, self) {
+        return self.indexOf(value) === index;
+      }).forEach(function (key) {
+        switch (key) {
+          case 'name':
+            if (typeof modifier.name !== 'string') {
+              console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+            }
+
+            break;
+
+          case 'enabled':
+            if (typeof modifier.enabled !== 'boolean') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+            }
+
+            break;
+
+          case 'phase':
+            if (modifierPhases.indexOf(modifier.phase) < 0) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+            }
+
+            break;
+
+          case 'fn':
+            if (typeof modifier.fn !== 'function') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+            }
+
+            break;
+
+          case 'effect':
+            if (modifier.effect != null && typeof modifier.effect !== 'function') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+            }
+
+            break;
+
+          case 'requires':
+            if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+            }
+
+            break;
+
+          case 'requiresIfExists':
+            if (!Array.isArray(modifier.requiresIfExists)) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+            }
+
+            break;
+
+          case 'options':
+          case 'data':
+            break;
+
+          default:
+            console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+              return "\"" + s + "\"";
+            }).join(', ') + "; but \"" + key + "\" was provided.");
+        }
+
+        modifier.requires && modifier.requires.forEach(function (requirement) {
+          if (modifiers.find(function (mod) {
+            return mod.name === requirement;
+          }) == null) {
+            console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+          }
+        });
+      });
+    });
+  }
+
+  function uniqueBy(arr, fn) {
+    var identifiers = new Set();
+    return arr.filter(function (item) {
+      var identifier = fn(item);
+
+      if (!identifiers.has(identifier)) {
+        identifiers.add(identifier);
+        return true;
+      }
+    });
+  }
+
+  function getBasePlacement(placement) {
+    return placement.split('-')[0];
+  }
+
+  function mergeByName(modifiers) {
+    var merged = modifiers.reduce(function (merged, current) {
+      var existing = merged[current.name];
+      merged[current.name] = existing ? Object.assign({}, existing, current, {
+        options: Object.assign({}, existing.options, current.options),
+        data: Object.assign({}, existing.data, current.data)
+      }) : current;
+      return merged;
+    }, {}); // IE11 does not support Object.values
+
+    return Object.keys(merged).map(function (key) {
+      return merged[key];
+    });
+  }
+
+  function getViewportRect(element) {
+    var win = getWindow(element);
+    var html = getDocumentElement(element);
+    var visualViewport = win.visualViewport;
+    var width = html.clientWidth;
+    var height = html.clientHeight;
+    var x = 0;
+    var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+    // can be obscured underneath it.
+    // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+    // if it isn't open, so if this isn't available, the popper will be detected
+    // to overflow the bottom of the screen too early.
+
+    if (visualViewport) {
+      width = visualViewport.width;
+      height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+      // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+      // errors due to floating point numbers, so we need to check precision.
+      // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+      // Feature detection fails in mobile emulation mode in Chrome.
+      // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+      // 0.001
+      // Fallback here: "Not Safari" userAgent
+
+      if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+        x = visualViewport.offsetLeft;
+        y = visualViewport.offsetTop;
+      }
+    }
+
+    return {
+      width: width,
+      height: height,
+      x: x + getWindowScrollBarX(element),
+      y: y
+    };
+  }
+
+  // of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+  function getDocumentRect(element) {
+    var _element$ownerDocumen;
+
+    var html = getDocumentElement(element);
+    var winScroll = getWindowScroll(element);
+    var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+    var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+    var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+    var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+    var y = -winScroll.scrollTop;
+
+    if (getComputedStyle(body || html).direction === 'rtl') {
+      x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+    }
+
+    return {
+      width: width,
+      height: height,
+      x: x,
+      y: y
+    };
+  }
+
+  function contains(parent, child) {
+    var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+    if (parent.contains(child)) {
+      return true;
+    } // then fallback to custom implementation with Shadow DOM support
+    else if (rootNode && isShadowRoot(rootNode)) {
+        var next = child;
+
+        do {
+          if (next && parent.isSameNode(next)) {
+            return true;
+          } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+          next = next.parentNode || next.host;
+        } while (next);
+      } // Give up, the result is false
+
+
+    return false;
+  }
+
+  function rectToClientRect(rect) {
+    return Object.assign({}, rect, {
+      left: rect.x,
+      top: rect.y,
+      right: rect.x + rect.width,
+      bottom: rect.y + rect.height
+    });
+  }
+
+  function getInnerBoundingClientRect(element) {
+    var rect = getBoundingClientRect(element);
+    rect.top = rect.top + element.clientTop;
+    rect.left = rect.left + element.clientLeft;
+    rect.bottom = rect.top + element.clientHeight;
+    rect.right = rect.left + element.clientWidth;
+    rect.width = element.clientWidth;
+    rect.height = element.clientHeight;
+    rect.x = rect.left;
+    rect.y = rect.top;
+    return rect;
+  }
+
+  function getClientRectFromMixedType(element, clippingParent) {
+    return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+  } // A "clipping parent" is an overflowable container with the characteristic of
+  // clipping (or hiding) overflowing elements with a position different from
+  // `initial`
+
+
+  function getClippingParents(element) {
+    var clippingParents = listScrollParents(getParentNode(element));
+    var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+    var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+    if (!isElement(clipperElement)) {
+      return [];
+    } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+    return clippingParents.filter(function (clippingParent) {
+      return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+    });
+  } // Gets the maximum area that the element is visible in due to any number of
+  // clipping parents
+
+
+  function getClippingRect(element, boundary, rootBoundary) {
+    var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+    var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+    var firstClippingParent = clippingParents[0];
+    var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+      var rect = getClientRectFromMixedType(element, clippingParent);
+      accRect.top = max(rect.top, accRect.top);
+      accRect.right = min(rect.right, accRect.right);
+      accRect.bottom = min(rect.bottom, accRect.bottom);
+      accRect.left = max(rect.left, accRect.left);
+      return accRect;
+    }, getClientRectFromMixedType(element, firstClippingParent));
+    clippingRect.width = clippingRect.right - clippingRect.left;
+    clippingRect.height = clippingRect.bottom - clippingRect.top;
+    clippingRect.x = clippingRect.left;
+    clippingRect.y = clippingRect.top;
+    return clippingRect;
+  }
+
+  function getVariation(placement) {
+    return placement.split('-')[1];
+  }
+
+  function getMainAxisFromPlacement(placement) {
+    return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+  }
+
+  function computeOffsets(_ref) {
+    var reference = _ref.reference,
+        element = _ref.element,
+        placement = _ref.placement;
+    var basePlacement = placement ? getBasePlacement(placement) : null;
+    var variation = placement ? getVariation(placement) : null;
+    var commonX = reference.x + reference.width / 2 - element.width / 2;
+    var commonY = reference.y + reference.height / 2 - element.height / 2;
+    var offsets;
+
+    switch (basePlacement) {
+      case top:
+        offsets = {
+          x: commonX,
+          y: reference.y - element.height
+        };
+        break;
+
+      case bottom:
+        offsets = {
+          x: commonX,
+          y: reference.y + reference.height
+        };
+        break;
+
+      case right:
+        offsets = {
+          x: reference.x + reference.width,
+          y: commonY
+        };
+        break;
+
+      case left:
+        offsets = {
+          x: reference.x - element.width,
+          y: commonY
+        };
+        break;
+
+      default:
+        offsets = {
+          x: reference.x,
+          y: reference.y
+        };
+    }
+
+    var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+    if (mainAxis != null) {
+      var len = mainAxis === 'y' ? 'height' : 'width';
+
+      switch (variation) {
+        case start:
+          offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+          break;
+
+        case end:
+          offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+          break;
+      }
+    }
+
+    return offsets;
+  }
+
+  function getFreshSideObject() {
+    return {
+      top: 0,
+      right: 0,
+      bottom: 0,
+      left: 0
+    };
+  }
+
+  function mergePaddingObject(paddingObject) {
+    return Object.assign({}, getFreshSideObject(), paddingObject);
+  }
+
+  function expandToHashMap(value, keys) {
+    return keys.reduce(function (hashMap, key) {
+      hashMap[key] = value;
+      return hashMap;
+    }, {});
+  }
+
+  function detectOverflow(state, options) {
+    if (options === void 0) {
+      options = {};
+    }
+
+    var _options = options,
+        _options$placement = _options.placement,
+        placement = _options$placement === void 0 ? state.placement : _options$placement,
+        _options$boundary = _options.boundary,
+        boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+        _options$rootBoundary = _options.rootBoundary,
+        rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+        _options$elementConte = _options.elementContext,
+        elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+        _options$altBoundary = _options.altBoundary,
+        altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+        _options$padding = _options.padding,
+        padding = _options$padding === void 0 ? 0 : _options$padding;
+    var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+    var altContext = elementContext === popper ? reference : popper;
+    var popperRect = state.rects.popper;
+    var element = state.elements[altBoundary ? altContext : elementContext];
+    var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+    var referenceClientRect = getBoundingClientRect(state.elements.reference);
+    var popperOffsets = computeOffsets({
+      reference: referenceClientRect,
+      element: popperRect,
+      strategy: 'absolute',
+      placement: placement
+    });
+    var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+    var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+    // 0 or negative = within the clipping rect
+
+    var overflowOffsets = {
+      top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+      bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+      left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+      right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+    };
+    var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+    if (elementContext === popper && offsetData) {
+      var offset = offsetData[placement];
+      Object.keys(overflowOffsets).forEach(function (key) {
+        var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+        var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+        overflowOffsets[key] += offset[axis] * multiply;
+      });
+    }
+
+    return overflowOffsets;
+  }
+
+  var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+  var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+  var DEFAULT_OPTIONS = {
+    placement: 'bottom',
+    modifiers: [],
+    strategy: 'absolute'
+  };
+
+  function areValidElements() {
+    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+      args[_key] = arguments[_key];
+    }
+
+    return !args.some(function (element) {
+      return !(element && typeof element.getBoundingClientRect === 'function');
+    });
+  }
+
+  function popperGenerator(generatorOptions) {
+    if (generatorOptions === void 0) {
+      generatorOptions = {};
+    }
+
+    var _generatorOptions = generatorOptions,
+        _generatorOptions$def = _generatorOptions.defaultModifiers,
+        defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+        _generatorOptions$def2 = _generatorOptions.defaultOptions,
+        defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+    return function createPopper(reference, popper, options) {
+      if (options === void 0) {
+        options = defaultOptions;
+      }
+
+      var state = {
+        placement: 'bottom',
+        orderedModifiers: [],
+        options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+        modifiersData: {},
+        elements: {
+          reference: reference,
+          popper: popper
+        },
+        attributes: {},
+        styles: {}
+      };
+      var effectCleanupFns = [];
+      var isDestroyed = false;
+      var instance = {
+        state: state,
+        setOptions: function setOptions(setOptionsAction) {
+          var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+          cleanupModifierEffects();
+          state.options = Object.assign({}, defaultOptions, state.options, options);
+          state.scrollParents = {
+            reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+            popper: listScrollParents(popper)
+          }; // Orders the modifiers based on their dependencies and `phase`
+          // properties
+
+          var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+          state.orderedModifiers = orderedModifiers.filter(function (m) {
+            return m.enabled;
+          }); // Validate the provided modifiers so that the consumer will get warned
+          // if one of the modifiers is invalid for any reason
+
+          {
+            var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+              var name = _ref.name;
+              return name;
+            });
+            validateModifiers(modifiers);
+
+            if (getBasePlacement(state.options.placement) === auto) {
+              var flipModifier = state.orderedModifiers.find(function (_ref2) {
+                var name = _ref2.name;
+                return name === 'flip';
+              });
+
+              if (!flipModifier) {
+                console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+              }
+            }
+
+            var _getComputedStyle = getComputedStyle(popper),
+                marginTop = _getComputedStyle.marginTop,
+                marginRight = _getComputedStyle.marginRight,
+                marginBottom = _getComputedStyle.marginBottom,
+                marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+            // cause bugs with positioning, so we'll warn the consumer
+
+
+            if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+              return parseFloat(margin);
+            })) {
+              console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+            }
+          }
+
+          runModifierEffects();
+          return instance.update();
+        },
+        // Sync update – it will always be executed, even if not necessary. This
+        // is useful for low frequency updates where sync behavior simplifies the
+        // logic.
+        // For high frequency updates (e.g. `resize` and `scroll` events), always
+        // prefer the async Popper#update method
+        forceUpdate: function forceUpdate() {
+          if (isDestroyed) {
+            return;
+          }
+
+          var _state$elements = state.elements,
+              reference = _state$elements.reference,
+              popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+          // anymore
+
+          if (!areValidElements(reference, popper)) {
+            {
+              console.error(INVALID_ELEMENT_ERROR);
+            }
+
+            return;
+          } // Store the reference and popper rects to be read by modifiers
+
+
+          state.rects = {
+            reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+            popper: getLayoutRect(popper)
+          }; // Modifiers have the ability to reset the current update cycle. The
+          // most common use case for this is the `flip` modifier changing the
+          // placement, which then needs to re-run all the modifiers, because the
+          // logic was previously ran for the previous placement and is therefore
+          // stale/incorrect
+
+          state.reset = false;
+          state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+          // is filled with the initial data specified by the modifier. This means
+          // it doesn't persist and is fresh on each update.
+          // To ensure persistent data, use `${name}#persistent`
+
+          state.orderedModifiers.forEach(function (modifier) {
+            return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+          });
+          var __debug_loops__ = 0;
+
+          for (var index = 0; index < state.orderedModifiers.length; index++) {
+            {
+              __debug_loops__ += 1;
+
+              if (__debug_loops__ > 100) {
+                console.error(INFINITE_LOOP_ERROR);
+                break;
+              }
+            }
+
+            if (state.reset === true) {
+              state.reset = false;
+              index = -1;
+              continue;
+            }
+
+            var _state$orderedModifie = state.orderedModifiers[index],
+                fn = _state$orderedModifie.fn,
+                _state$orderedModifie2 = _state$orderedModifie.options,
+                _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+                name = _state$orderedModifie.name;
+
+            if (typeof fn === 'function') {
+              state = fn({
+                state: state,
+                options: _options,
+                name: name,
+                instance: instance
+              }) || state;
+            }
+          }
+        },
+        // Async and optimistically optimized update – it will not be executed if
+        // not necessary (debounced to run at most once-per-tick)
+        update: debounce(function () {
+          return new Promise(function (resolve) {
+            instance.forceUpdate();
+            resolve(state);
+          });
+        }),
+        destroy: function destroy() {
+          cleanupModifierEffects();
+          isDestroyed = true;
+        }
+      };
+
+      if (!areValidElements(reference, popper)) {
+        {
+          console.error(INVALID_ELEMENT_ERROR);
+        }
+
+        return instance;
+      }
+
+      instance.setOptions(options).then(function (state) {
+        if (!isDestroyed && options.onFirstUpdate) {
+          options.onFirstUpdate(state);
+        }
+      }); // Modifiers have the ability to execute arbitrary code before the first
+      // update cycle runs. They will be executed in the same order as the update
+      // cycle. This is useful when a modifier adds some persistent data that
+      // other modifiers need to use, but the modifier is run after the dependent
+      // one.
+
+      function runModifierEffects() {
+        state.orderedModifiers.forEach(function (_ref3) {
+          var name = _ref3.name,
+              _ref3$options = _ref3.options,
+              options = _ref3$options === void 0 ? {} : _ref3$options,
+              effect = _ref3.effect;
+
+          if (typeof effect === 'function') {
+            var cleanupFn = effect({
+              state: state,
+              name: name,
+              instance: instance,
+              options: options
+            });
+
+            var noopFn = function noopFn() {};
+
+            effectCleanupFns.push(cleanupFn || noopFn);
+          }
+        });
+      }
+
+      function cleanupModifierEffects() {
+        effectCleanupFns.forEach(function (fn) {
+          return fn();
+        });
+        effectCleanupFns = [];
+      }
+
+      return instance;
+    };
+  }
+
+  var passive = {
+    passive: true
+  };
+
+  function effect$1(_ref) {
+    var state = _ref.state,
+        instance = _ref.instance,
+        options = _ref.options;
+    var _options$scroll = options.scroll,
+        scroll = _options$scroll === void 0 ? true : _options$scroll,
+        _options$resize = options.resize,
+        resize = _options$resize === void 0 ? true : _options$resize;
+    var window = getWindow(state.elements.popper);
+    var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);
+
+    if (scroll) {
+      scrollParents.forEach(function (scrollParent) {
+        scrollParent.addEventListener('scroll', instance.update, passive);
+      });
+    }
+
+    if (resize) {
+      window.addEventListener('resize', instance.update, passive);
+    }
+
+    return function () {
+      if (scroll) {
+        scrollParents.forEach(function (scrollParent) {
+          scrollParent.removeEventListener('scroll', instance.update, passive);
+        });
+      }
+
+      if (resize) {
+        window.removeEventListener('resize', instance.update, passive);
+      }
+    };
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var eventListeners = {
+    name: 'eventListeners',
+    enabled: true,
+    phase: 'write',
+    fn: function fn() {},
+    effect: effect$1,
+    data: {}
+  };
+
+  function popperOffsets(_ref) {
+    var state = _ref.state,
+        name = _ref.name;
+    // Offsets are the actual position the popper needs to have to be
+    // properly positioned near its reference element
+    // This is the most basic placement, and will be adjusted by
+    // the modifiers in the next step
+    state.modifiersData[name] = computeOffsets({
+      reference: state.rects.reference,
+      element: state.rects.popper,
+      strategy: 'absolute',
+      placement: state.placement
+    });
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var popperOffsets$1 = {
+    name: 'popperOffsets',
+    enabled: true,
+    phase: 'read',
+    fn: popperOffsets,
+    data: {}
+  };
+
+  var unsetSides = {
+    top: 'auto',
+    right: 'auto',
+    bottom: 'auto',
+    left: 'auto'
+  }; // Round the offsets to the nearest suitable subpixel based on the DPR.
+  // Zooming can change the DPR, but it seems to report a value that will
+  // cleanly divide the values into the appropriate subpixels.
+
+  function roundOffsetsByDPR(_ref) {
+    var x = _ref.x,
+        y = _ref.y;
+    var win = window;
+    var dpr = win.devicePixelRatio || 1;
+    return {
+      x: round(x * dpr) / dpr || 0,
+      y: round(y * dpr) / dpr || 0
+    };
+  }
+
+  function mapToStyles(_ref2) {
+    var _Object$assign2;
+
+    var popper = _ref2.popper,
+        popperRect = _ref2.popperRect,
+        placement = _ref2.placement,
+        variation = _ref2.variation,
+        offsets = _ref2.offsets,
+        position = _ref2.position,
+        gpuAcceleration = _ref2.gpuAcceleration,
+        adaptive = _ref2.adaptive,
+        roundOffsets = _ref2.roundOffsets,
+        isFixed = _ref2.isFixed;
+
+    var _ref3 = roundOffsets === true ? roundOffsetsByDPR(offsets) : typeof roundOffsets === 'function' ? roundOffsets(offsets) : offsets,
+        _ref3$x = _ref3.x,
+        x = _ref3$x === void 0 ? 0 : _ref3$x,
+        _ref3$y = _ref3.y,
+        y = _ref3$y === void 0 ? 0 : _ref3$y;
+
+    var hasX = offsets.hasOwnProperty('x');
+    var hasY = offsets.hasOwnProperty('y');
+    var sideX = left;
+    var sideY = top;
+    var win = window;
+
+    if (adaptive) {
+      var offsetParent = getOffsetParent(popper);
+      var heightProp = 'clientHeight';
+      var widthProp = 'clientWidth';
+
+      if (offsetParent === getWindow(popper)) {
+        offsetParent = getDocumentElement(popper);
+
+        if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {
+          heightProp = 'scrollHeight';
+          widthProp = 'scrollWidth';
+        }
+      } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+
+
+      offsetParent = offsetParent;
+
+      if (placement === top || (placement === left || placement === right) && variation === end) {
+        sideY = bottom;
+        var offsetY = isFixed && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]
+        offsetParent[heightProp];
+        y -= offsetY - popperRect.height;
+        y *= gpuAcceleration ? 1 : -1;
+      }
+
+      if (placement === left || (placement === top || placement === bottom) && variation === end) {
+        sideX = right;
+        var offsetX = isFixed && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
+        offsetParent[widthProp];
+        x -= offsetX - popperRect.width;
+        x *= gpuAcceleration ? 1 : -1;
+      }
+    }
+
+    var commonStyles = Object.assign({
+      position: position
+    }, adaptive && unsetSides);
+
+    if (gpuAcceleration) {
+      var _Object$assign;
+
+      return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
+    }
+
+    return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
+  }
+
+  function computeStyles(_ref4) {
+    var state = _ref4.state,
+        options = _ref4.options;
+    var _options$gpuAccelerat = options.gpuAcceleration,
+        gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
+        _options$adaptive = options.adaptive,
+        adaptive = _options$adaptive === void 0 ? true : _options$adaptive,
+        _options$roundOffsets = options.roundOffsets,
+        roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;
+
+    {
+      var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
+
+      if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
+        return transitionProperty.indexOf(property) >= 0;
+      })) {
+        console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
+      }
+    }
+
+    var commonStyles = {
+      placement: getBasePlacement(state.placement),
+      variation: getVariation(state.placement),
+      popper: state.elements.popper,
+      popperRect: state.rects.popper,
+      gpuAcceleration: gpuAcceleration,
+      isFixed: state.options.strategy === 'fixed'
+    };
+
+    if (state.modifiersData.popperOffsets != null) {
+      state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {
+        offsets: state.modifiersData.popperOffsets,
+        position: state.options.strategy,
+        adaptive: adaptive,
+        roundOffsets: roundOffsets
+      })));
+    }
+
+    if (state.modifiersData.arrow != null) {
+      state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {
+        offsets: state.modifiersData.arrow,
+        position: 'absolute',
+        adaptive: false,
+        roundOffsets: roundOffsets
+      })));
+    }
+
+    state.attributes.popper = Object.assign({}, state.attributes.popper, {
+      'data-popper-placement': state.placement
+    });
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var computeStyles$1 = {
+    name: 'computeStyles',
+    enabled: true,
+    phase: 'beforeWrite',
+    fn: computeStyles,
+    data: {}
+  };
+
+  // and applies them to the HTMLElements such as popper and arrow
+
+  function applyStyles(_ref) {
+    var state = _ref.state;
+    Object.keys(state.elements).forEach(function (name) {
+      var style = state.styles[name] || {};
+      var attributes = state.attributes[name] || {};
+      var element = state.elements[name]; // arrow is optional + virtual elements
+
+      if (!isHTMLElement(element) || !getNodeName(element)) {
+        return;
+      } // Flow doesn't support to extend this property, but it's the most
+      // effective way to apply styles to an HTMLElement
+      // $FlowFixMe[cannot-write]
+
+
+      Object.assign(element.style, style);
+      Object.keys(attributes).forEach(function (name) {
+        var value = attributes[name];
+
+        if (value === false) {
+          element.removeAttribute(name);
+        } else {
+          element.setAttribute(name, value === true ? '' : value);
+        }
+      });
+    });
+  }
+
+  function effect(_ref2) {
+    var state = _ref2.state;
+    var initialStyles = {
+      popper: {
+        position: state.options.strategy,
+        left: '0',
+        top: '0',
+        margin: '0'
+      },
+      arrow: {
+        position: 'absolute'
+      },
+      reference: {}
+    };
+    Object.assign(state.elements.popper.style, initialStyles.popper);
+    state.styles = initialStyles;
+
+    if (state.elements.arrow) {
+      Object.assign(state.elements.arrow.style, initialStyles.arrow);
+    }
+
+    return function () {
+      Object.keys(state.elements).forEach(function (name) {
+        var element = state.elements[name];
+        var attributes = state.attributes[name] || {};
+        var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them
+
+        var style = styleProperties.reduce(function (style, property) {
+          style[property] = '';
+          return style;
+        }, {}); // arrow is optional + virtual elements
+
+        if (!isHTMLElement(element) || !getNodeName(element)) {
+          return;
+        }
+
+        Object.assign(element.style, style);
+        Object.keys(attributes).forEach(function (attribute) {
+          element.removeAttribute(attribute);
+        });
+      });
+    };
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var applyStyles$1 = {
+    name: 'applyStyles',
+    enabled: true,
+    phase: 'write',
+    fn: applyStyles,
+    effect: effect,
+    requires: ['computeStyles']
+  };
+
+  var defaultModifiers = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1];
+  var createPopper = /*#__PURE__*/popperGenerator({
+    defaultModifiers: defaultModifiers
+  }); // eslint-disable-next-line import/no-unused-modules
+
+  exports.createPopper = createPopper;
+  exports.defaultModifiers = defaultModifiers;
+  exports.detectOverflow = detectOverflow;
+  exports.popperGenerator = popperGenerator;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
+//# sourceMappingURL=popper-lite.js.map
diff --git a/popperjs/package/dist/umd/popper-lite.js.map b/popperjs/package/dist/umd/popper-lite.js.map
new file mode 100644
index 0000000..46371fe
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-lite.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-lite.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/utils/math.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/isTableElement.js","../../src/dom-utils/getOffsetParent.js","../../src/enums.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/format.js","../../src/utils/validateModifiers.js","../../src/utils/uniqueBy.js","../../src/utils/getBasePlacement.js","../../src/utils/mergeByName.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/utils/computeOffsets.js","../../src/utils/getFreshSideObject.js","../../src/utils/mergePaddingObject.js","../../src/utils/expandToHashMap.js","../../src/utils/detectOverflow.js","../../src/createPopper.js","../../src/modifiers/eventListeners.js","../../src/modifiers/popperOffsets.js","../../src/modifiers/computeStyles.js","../../src/modifiers/applyStyles.js","../../src/popper-lite.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\n\nexport default function format(str: string, ...args: Array<string>) {\n  return [...args].reduce((p, c) => p.replace(/%s/, c), str);\n}\n","// @flow\nimport format from './format';\nimport { modifierPhases } from '../enums';\n\nconst INVALID_MODIFIER_ERROR =\n  'Popper: modifier \"%s\" provided an invalid %s property, expected %s but got %s';\nconst MISSING_DEPENDENCY_ERROR =\n  'Popper: modifier \"%s\" requires \"%s\", but \"%s\" modifier is not available';\nconst VALID_PROPERTIES = [\n  'name',\n  'enabled',\n  'phase',\n  'fn',\n  'effect',\n  'requires',\n  'options',\n];\n\nexport default function validateModifiers(modifiers: Array<any>): void {\n  modifiers.forEach((modifier) => {\n    [...Object.keys(modifier), ...VALID_PROPERTIES]\n      // IE11-compatible replacement for `new Set(iterable)`\n      .filter((value, index, self) => self.indexOf(value) === index)\n      .forEach((key) => {\n        switch (key) {\n          case 'name':\n            if (typeof modifier.name !== 'string') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  String(modifier.name),\n                  '\"name\"',\n                  '\"string\"',\n                  `\"${String(modifier.name)}\"`\n                )\n              );\n            }\n            break;\n          case 'enabled':\n            if (typeof modifier.enabled !== 'boolean') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"enabled\"',\n                  '\"boolean\"',\n                  `\"${String(modifier.enabled)}\"`\n                )\n              );\n            }\n            break;\n          case 'phase':\n            if (modifierPhases.indexOf(modifier.phase) < 0) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"phase\"',\n                  `either ${modifierPhases.join(', ')}`,\n                  `\"${String(modifier.phase)}\"`\n                )\n              );\n            }\n            break;\n          case 'fn':\n            if (typeof modifier.fn !== 'function') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"fn\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'effect':\n            if (\n              modifier.effect != null &&\n              typeof modifier.effect !== 'function'\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"effect\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'requires':\n            if (\n              modifier.requires != null &&\n              !Array.isArray(modifier.requires)\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requires\"',\n                  '\"array\"',\n                  `\"${String(modifier.requires)}\"`\n                )\n              );\n            }\n            break;\n          case 'requiresIfExists':\n            if (!Array.isArray(modifier.requiresIfExists)) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requiresIfExists\"',\n                  '\"array\"',\n                  `\"${String(modifier.requiresIfExists)}\"`\n                )\n              );\n            }\n            break;\n          case 'options':\n          case 'data':\n            break;\n          default:\n            console.error(\n              `PopperJS: an invalid property has been provided to the \"${\n                modifier.name\n              }\" modifier, valid properties are ${VALID_PROPERTIES.map(\n                (s) => `\"${s}\"`\n              ).join(', ')}; but \"${key}\" was provided.`\n            );\n        }\n\n        modifier.requires &&\n          modifier.requires.forEach((requirement) => {\n            if (modifiers.find((mod) => mod.name === requirement) == null) {\n              console.error(\n                format(\n                  MISSING_DEPENDENCY_ERROR,\n                  String(modifier.name),\n                  requirement,\n                  requirement\n                )\n              );\n            }\n          });\n      });\n  });\n}\n","// @flow\n\nexport default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {\n  const identifiers = new Set();\n\n  return arr.filter(item => {\n    const identifier = fn(item);\n\n    if (!identifiers.has(identifier)) {\n      identifiers.add(identifier);\n      return true;\n    }\n  });\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 'height' : 'width';\n\n    switch (variation) {\n      case start:\n        offsets[mainAxis] =\n          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n        break;\n      case end:\n        offsets[mainAxis] =\n          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n        break;\n      default:\n    }\n  }\n\n  return offsets;\n}\n","// @flow\nimport type { SideObject } from '../types';\n\nexport default function getFreshSideObject(): SideObject {\n  return {\n    top: 0,\n    right: 0,\n    bottom: 0,\n    left: 0,\n  };\n}\n","// @flow\nimport type { SideObject } from '../types';\nimport getFreshSideObject from './getFreshSideObject';\n\nexport default function mergePaddingObject(\n  paddingObject: $Shape<SideObject>\n): SideObject {\n  return {\n    ...getFreshSideObject(),\n    ...paddingObject,\n  };\n}\n","// @flow\n\nexport default function expandToHashMap<\n  T: number | string | boolean,\n  K: string\n>(value: T, keys: Array<K>): { [key: string]: T } {\n  return keys.reduce((hashMap, key) => {\n    hashMap[key] = value;\n    return hashMap;\n  }, {});\n}\n","// @flow\nimport type { State, SideObject, Padding } from '../types';\nimport type { Placement, Boundary, RootBoundary, Context } from '../enums';\nimport getClippingRect from '../dom-utils/getClippingRect';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getBoundingClientRect from '../dom-utils/getBoundingClientRect';\nimport computeOffsets from './computeOffsets';\nimport rectToClientRect from './rectToClientRect';\nimport {\n  clippingParents,\n  reference,\n  popper,\n  bottom,\n  top,\n  right,\n  basePlacements,\n  viewport,\n} from '../enums';\nimport { isElement } from '../dom-utils/instanceOf';\nimport mergePaddingObject from './mergePaddingObject';\nimport expandToHashMap from './expandToHashMap';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  placement: Placement,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  elementContext: Context,\n  altBoundary: boolean,\n  padding: Padding,\n};\n\nexport default function detectOverflow(\n  state: State,\n  options: $Shape<Options> = {}\n): SideObject {\n  const {\n    placement = state.placement,\n    boundary = clippingParents,\n    rootBoundary = viewport,\n    elementContext = popper,\n    altBoundary = false,\n    padding = 0,\n  } = options;\n\n  const paddingObject = mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n\n  const altContext = elementContext === popper ? reference : popper;\n\n  const popperRect = state.rects.popper;\n  const element = state.elements[altBoundary ? altContext : elementContext];\n\n  const clippingClientRect = getClippingRect(\n    isElement(element)\n      ? element\n      : element.contextElement || getDocumentElement(state.elements.popper),\n    boundary,\n    rootBoundary\n  );\n\n  const referenceClientRect = getBoundingClientRect(state.elements.reference);\n\n  const popperOffsets = computeOffsets({\n    reference: referenceClientRect,\n    element: popperRect,\n    strategy: 'absolute',\n    placement,\n  });\n\n  const popperClientRect = rectToClientRect({\n    ...popperRect,\n    ...popperOffsets,\n  });\n\n  const elementClientRect =\n    elementContext === popper ? popperClientRect : referenceClientRect;\n\n  // positive = overflowing the clipping rect\n  // 0 or negative = within the clipping rect\n  const overflowOffsets = {\n    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n    bottom:\n      elementClientRect.bottom -\n      clippingClientRect.bottom +\n      paddingObject.bottom,\n    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n    right:\n      elementClientRect.right - clippingClientRect.right + paddingObject.right,\n  };\n\n  const offsetData = state.modifiersData.offset;\n\n  // Offsets can be applied only to the popper element\n  if (elementContext === popper && offsetData) {\n    const offset = offsetData[placement];\n\n    Object.keys(overflowOffsets).forEach((key) => {\n      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow };\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport getWindow from '../dom-utils/getWindow';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  scroll: boolean,\n  resize: boolean,\n};\n\nconst passive = { passive: true };\n\nfunction effect({ state, instance, options }: ModifierArguments<Options>) {\n  const { scroll = true, resize = true } = options;\n\n  const window = getWindow(state.elements.popper);\n  const scrollParents = [\n    ...state.scrollParents.reference,\n    ...state.scrollParents.popper,\n  ];\n\n  if (scroll) {\n    scrollParents.forEach(scrollParent => {\n      scrollParent.addEventListener('scroll', instance.update, passive);\n    });\n  }\n\n  if (resize) {\n    window.addEventListener('resize', instance.update, passive);\n  }\n\n  return () => {\n    if (scroll) {\n      scrollParents.forEach(scrollParent => {\n        scrollParent.removeEventListener('scroll', instance.update, passive);\n      });\n    }\n\n    if (resize) {\n      window.removeEventListener('resize', instance.update, passive);\n    }\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type EventListenersModifier = Modifier<'eventListeners', Options>;\nexport default ({\n  name: 'eventListeners',\n  enabled: true,\n  phase: 'write',\n  fn: () => {},\n  effect,\n  data: {},\n}: EventListenersModifier);\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport computeOffsets from '../utils/computeOffsets';\n\nfunction popperOffsets({ state, name }: ModifierArguments<{||}>) {\n  // Offsets are the actual position the popper needs to have to be\n  // properly positioned near its reference element\n  // This is the most basic placement, and will be adjusted by\n  // the modifiers in the next step\n  state.modifiersData[name] = computeOffsets({\n    reference: state.rects.reference,\n    element: state.rects.popper,\n    strategy: 'absolute',\n    placement: state.placement,\n  });\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PopperOffsetsModifier = Modifier<'popperOffsets', {||}>;\nexport default ({\n  name: 'popperOffsets',\n  enabled: true,\n  phase: 'read',\n  fn: popperOffsets,\n  data: {},\n}: PopperOffsetsModifier);\n","// @flow\nimport type {\n  PositioningStrategy,\n  Offsets,\n  Modifier,\n  ModifierArguments,\n  Rect,\n  Window,\n} from '../types';\nimport {\n  type BasePlacement,\n  type Variation,\n  top,\n  left,\n  right,\n  bottom,\n  end,\n} from '../enums';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getWindow from '../dom-utils/getWindow';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getComputedStyle from '../dom-utils/getComputedStyle';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getVariation from '../utils/getVariation';\nimport { round } from '../utils/math';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type RoundOffsets = (\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>\n) => Offsets;\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets?: boolean | RoundOffsets,\n};\n\nconst unsetSides = {\n  top: 'auto',\n  right: 'auto',\n  bottom: 'auto',\n  left: 'auto',\n};\n\n// Round the offsets to the nearest suitable subpixel based on the DPR.\n// Zooming can change the DPR, but it seems to report a value that will\n// cleanly divide the values into the appropriate subpixels.\nfunction roundOffsetsByDPR({ x, y }): Offsets {\n  const win: Window = window;\n  const dpr = win.devicePixelRatio || 1;\n\n  return {\n    x: round(x * dpr) / dpr || 0,\n    y: round(y * dpr) / dpr || 0,\n  };\n}\n\nexport function mapToStyles({\n  popper,\n  popperRect,\n  placement,\n  variation,\n  offsets,\n  position,\n  gpuAcceleration,\n  adaptive,\n  roundOffsets,\n  isFixed,\n}: {\n  popper: HTMLElement,\n  popperRect: Rect,\n  placement: BasePlacement,\n  variation: ?Variation,\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>,\n  position: PositioningStrategy,\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets: boolean | RoundOffsets,\n  isFixed: boolean,\n}) {\n  let { x = 0, y = 0 } =\n    roundOffsets === true\n      ? roundOffsetsByDPR(offsets)\n      : typeof roundOffsets === 'function'\n      ? roundOffsets(offsets)\n      : offsets;\n\n  const hasX = offsets.hasOwnProperty('x');\n  const hasY = offsets.hasOwnProperty('y');\n\n  let sideX: string = left;\n  let sideY: string = top;\n\n  const win: Window = window;\n\n  if (adaptive) {\n    let offsetParent = getOffsetParent(popper);\n    let heightProp = 'clientHeight';\n    let widthProp = 'clientWidth';\n\n    if (offsetParent === getWindow(popper)) {\n      offsetParent = getDocumentElement(popper);\n\n      if (\n        getComputedStyle(offsetParent).position !== 'static' &&\n        position === 'absolute'\n      ) {\n        heightProp = 'scrollHeight';\n        widthProp = 'scrollWidth';\n      }\n    }\n\n    // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it\n    offsetParent = (offsetParent: Element);\n\n    if (\n      placement === top ||\n      ((placement === left || placement === right) && variation === end)\n    ) {\n      sideY = bottom;\n      const offsetY =\n        isFixed && win.visualViewport\n          ? win.visualViewport.height\n          : // $FlowFixMe[prop-missing]\n            offsetParent[heightProp];\n      y -= offsetY - popperRect.height;\n      y *= gpuAcceleration ? 1 : -1;\n    }\n\n    if (\n      placement === left ||\n      ((placement === top || placement === bottom) && variation === end)\n    ) {\n      sideX = right;\n      const offsetX =\n        isFixed && win.visualViewport\n          ? win.visualViewport.width\n          : // $FlowFixMe[prop-missing]\n            offsetParent[widthProp];\n      x -= offsetX - popperRect.width;\n      x *= gpuAcceleration ? 1 : -1;\n    }\n  }\n\n  const commonStyles = {\n    position,\n    ...(adaptive && unsetSides),\n  };\n\n  if (gpuAcceleration) {\n    return {\n      ...commonStyles,\n      [sideY]: hasY ? '0' : '',\n      [sideX]: hasX ? '0' : '',\n      // Layer acceleration can disable subpixel rendering which causes slightly\n      // blurry text on low PPI displays, so we want to use 2D transforms\n      // instead\n      transform:\n        (win.devicePixelRatio || 1) <= 1\n          ? `translate(${x}px, ${y}px)`\n          : `translate3d(${x}px, ${y}px, 0)`,\n    };\n  }\n\n  return {\n    ...commonStyles,\n    [sideY]: hasY ? `${y}px` : '',\n    [sideX]: hasX ? `${x}px` : '',\n    transform: '',\n  };\n}\n\nfunction computeStyles({ state, options }: ModifierArguments<Options>) {\n  const {\n    gpuAcceleration = true,\n    adaptive = true,\n    // defaults to use builtin `roundOffsetsByDPR`\n    roundOffsets = true,\n  } = options;\n\n  if (__DEV__) {\n    const transitionProperty =\n      getComputedStyle(state.elements.popper).transitionProperty || '';\n\n    if (\n      adaptive &&\n      ['transform', 'top', 'right', 'bottom', 'left'].some(\n        (property) => transitionProperty.indexOf(property) >= 0\n      )\n    ) {\n      console.warn(\n        [\n          'Popper: Detected CSS transitions on at least one of the following',\n          'CSS properties: \"transform\", \"top\", \"right\", \"bottom\", \"left\".',\n          '\\n\\n',\n          'Disable the \"computeStyles\" modifier\\'s `adaptive` option to allow',\n          'for smooth transitions, or remove these properties from the CSS',\n          'transition declaration on the popper element if only transitioning',\n          'opacity or background-color for example.',\n          '\\n\\n',\n          'We recommend using the popper element as a wrapper around an inner',\n          'element that can have any CSS property transitioned for animations.',\n        ].join(' ')\n      );\n    }\n  }\n\n  const commonStyles = {\n    placement: getBasePlacement(state.placement),\n    variation: getVariation(state.placement),\n    popper: state.elements.popper,\n    popperRect: state.rects.popper,\n    gpuAcceleration,\n    isFixed: state.options.strategy === 'fixed',\n  };\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.styles.popper = {\n      ...state.styles.popper,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.popperOffsets,\n        position: state.options.strategy,\n        adaptive,\n        roundOffsets,\n      }),\n    };\n  }\n\n  if (state.modifiersData.arrow != null) {\n    state.styles.arrow = {\n      ...state.styles.arrow,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.arrow,\n        position: 'absolute',\n        adaptive: false,\n        roundOffsets,\n      }),\n    };\n  }\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-placement': state.placement,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ComputeStylesModifier = Modifier<'computeStyles', Options>;\nexport default ({\n  name: 'computeStyles',\n  enabled: true,\n  phase: 'beforeWrite',\n  fn: computeStyles,\n  data: {},\n}: ComputeStylesModifier);\n","// @flow\nimport type { Modifier, ModifierArguments } from '../types';\nimport getNodeName from '../dom-utils/getNodeName';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// This modifier takes the styles prepared by the `computeStyles` modifier\n// and applies them to the HTMLElements such as popper and arrow\n\nfunction applyStyles({ state }: ModifierArguments<{||}>) {\n  Object.keys(state.elements).forEach((name) => {\n    const style = state.styles[name] || {};\n\n    const attributes = state.attributes[name] || {};\n    const element = state.elements[name];\n\n    // arrow is optional + virtual elements\n    if (!isHTMLElement(element) || !getNodeName(element)) {\n      return;\n    }\n\n    // Flow doesn't support to extend this property, but it's the most\n    // effective way to apply styles to an HTMLElement\n    // $FlowFixMe[cannot-write]\n    Object.assign(element.style, style);\n\n    Object.keys(attributes).forEach((name) => {\n      const value = attributes[name];\n      if (value === false) {\n        element.removeAttribute(name);\n      } else {\n        element.setAttribute(name, value === true ? '' : value);\n      }\n    });\n  });\n}\n\nfunction effect({ state }: ModifierArguments<{||}>) {\n  const initialStyles = {\n    popper: {\n      position: state.options.strategy,\n      left: '0',\n      top: '0',\n      margin: '0',\n    },\n    arrow: {\n      position: 'absolute',\n    },\n    reference: {},\n  };\n\n  Object.assign(state.elements.popper.style, initialStyles.popper);\n  state.styles = initialStyles;\n\n  if (state.elements.arrow) {\n    Object.assign(state.elements.arrow.style, initialStyles.arrow);\n  }\n\n  return () => {\n    Object.keys(state.elements).forEach((name) => {\n      const element = state.elements[name];\n      const attributes = state.attributes[name] || {};\n\n      const styleProperties = Object.keys(\n        state.styles.hasOwnProperty(name)\n          ? state.styles[name]\n          : initialStyles[name]\n      );\n\n      // Set all values to an empty string to unset them\n      const style = styleProperties.reduce((style, property) => {\n        style[property] = '';\n        return style;\n      }, {});\n\n      // arrow is optional + virtual elements\n      if (!isHTMLElement(element) || !getNodeName(element)) {\n        return;\n      }\n\n      Object.assign(element.style, style);\n\n      Object.keys(attributes).forEach((attribute) => {\n        element.removeAttribute(attribute);\n      });\n    });\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ApplyStylesModifier = Modifier<'applyStyles', {||}>;\nexport default ({\n  name: 'applyStyles',\n  enabled: true,\n  phase: 'write',\n  fn: applyStyles,\n  effect,\n  requires: ['computeStyles'],\n}: ApplyStylesModifier);\n","// @flow\nimport { popperGenerator, detectOverflow } from './createPopper';\n\nimport eventListeners from './modifiers/eventListeners';\nimport popperOffsets from './modifiers/popperOffsets';\nimport computeStyles from './modifiers/computeStyles';\nimport applyStyles from './modifiers/applyStyles';\n\nexport type * from 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\ No newline at end of file
diff --git a/popperjs/package/dist/umd/popper-lite.min.js b/popperjs/package/dist/umd/popper-lite.min.js
new file mode 100644
index 0000000..9f1d606
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-lite.min.js
@@ -0,0 +1,6 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
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e?(e.nodeName||"").toLowerCase():null}function f(e){return((o(e)?e.ownerDocument:e.document)||window.document).documentElement}function c(e){return r(f(e)).left+a(e).scrollLeft}function p(e){return t(e).getComputedStyle(e)}function l(e){return e=p(e),/auto|scroll|overlay|hidden/.test(e.overflow+e.overflowY+e.overflowX)}function u(e,o,i){void 0===i&&(i=!1);var p,u=n(o);if(p=n(o)){var d=o.getBoundingClientRect();p=k(d.width)/o.offsetWidth||1,d=k(d.height)/o.offsetHeight||1,p=1!==p||1!==d}d=p,p=f(o),e=r(e,d),d={scrollLeft:0,scrollTop:0};var h={x:0,y:0};return(u||!u&&!i)&&(("body"!==s(o)||l(p))&&(d=o!==t(o)&&n(o)?{scrollLeft:o.scrollLeft,scrollTop:o.scrollTop}:a(o)),n(o)?((h=r(o,!0)).x+=o.clientLeft,h.y+=o.clientTop):p&&(h.x=c(p))),{x:e.left+d.scrollLeft-h.x,y:e.top+d.scrollTop-h.y,width:e.width,height:e.height}}function d(e){var t=r(e),o=e.offsetWidth,n=e.offsetHeight;return 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n=o.adaptive;n=void 0===n||n,o=void 0===(o=o.roundOffsets)||o,e={placement:t.placement.split("-")[0],variation:t.placement.split("-")[1],popper:t.elements.popper,popperRect:t.rects.popper,gpuAcceleration:e,isFixed:"fixed"===t.options.strategy},null!=t.modifiersData.popperOffsets&&(t.styles.popper=Object.assign({},t.styles.popper,W(Object.assign({},e,{offsets:t.modifiersData.popperOffsets,position:t.options.strategy,adaptive:n,roundOffsets:o})))),null!=t.modifiersData.arrow&&(t.styles.arrow=Object.assign({},t.styles.arrow,W(Object.assign({},e,{offsets:t.modifiersData.arrow,position:"absolute",adaptive:!1,roundOffsets:o})))),t.attributes.popper=Object.assign({},t.attributes.popper,{"data-popper-placement":t.placement})},data:{}},{name:"applyStyles",enabled:!0,phase:"write",fn:function(e){var t=e.state;Object.keys(t.elements).forEach((function(e){var o=t.styles[e]||{},i=t.attributes[e]||{},r=t.elements[e];n(r)&&s(r)&&(Object.assign(r.style,o),Object.keys(i).forEach((function(e){var t=i[e];!1===t?r.removeAttribute(e):r.setAttribute(e,!0===t?"":t)})))}))},effect:function(e){var t=e.state,o={popper:{position:t.options.strategy,left:"0",top:"0",margin:"0"},arrow:{position:"absolute"},reference:{}};return Object.assign(t.elements.popper.style,o.popper),t.styles=o,t.elements.arrow&&Object.assign(t.elements.arrow.style,o.arrow),function(){Object.keys(t.elements).forEach((function(e){var i=t.elements[e],r=t.attributes[e]||{};e=Object.keys(t.styles.hasOwnProperty(e)?t.styles[e]:o[e]).reduce((function(e,t){return e[t]="",e}),{}),n(i)&&s(i)&&(Object.assign(i.style,e),Object.keys(r).forEach((function(e){i.removeAttribute(e)})))}))}},requires:["computeStyles"]}],N=M({defaultModifiers:C});e.createPopper=N,e.defaultModifiers=C,e.detectOverflow=function(e,t){void 0===t&&(t={});var n=t;t=void 0===(t=n.placement)?e.placement:t;var i=n.boundary,a=void 0===i?"clippingParents":i,s=void 0===(i=n.rootBoundary)?"viewport":i;i=void 0===(i=n.elementContext)?"popper":i;var c=n.altBoundary,p=void 0!==c&&c;n=void 0===(n=n.padding)?0:n,n=Object.assign({},{top:0,right:0,bottom:0,left:0},"number"!=typeof n?n:function(e,t){return t.reduce((function(t,o){return t[o]=e,t}),{})}(n,H)),c=e.rects.popper,a=j(o(p=e.elements[p?"popper"===i?"reference":"popper":i])?p:p.contextElement||f(e.elements.popper),a,s),p=E({reference:s=r(e.elements.reference),element:c,strategy:"absolute",placement:t}),c=x(Object.assign({},c,p)),s="popper"===i?c:s;var l={top:a.top-s.top+n.top,bottom:s.bottom-a.bottom+n.bottom,left:a.left-s.left+n.left,right:s.right-a.right+n.right};if(e=e.modifiersData.offset,"popper"===i&&e){var u=e[t];Object.keys(l).forEach((function(e){var t=0<=["right","bottom"].indexOf(e)?1:-1,o=0<=["top","bottom"].indexOf(e)?"y":"x";l[e]+=u[o]*t}))}return l},e.popperGenerator=M,Object.defineProperty(e,"__esModule",{value:!0})}));
+//# sourceMappingURL=popper-lite.min.js.map
diff --git a/popperjs/package/dist/umd/popper-lite.min.js.flow b/popperjs/package/dist/umd/popper-lite.min.js.flow
new file mode 100644
index 0000000..8658c44
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-lite.min.js.flow
@@ -0,0 +1,3 @@
+// @flow
+
+export * from '../../lib/popper-lite.js'
diff --git a/popperjs/package/dist/umd/popper-lite.min.js.map b/popperjs/package/dist/umd/popper-lite.min.js.map
new file mode 100644
index 0000000..c5c0019
--- /dev/null
+++ b/popperjs/package/dist/umd/popper-lite.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper-lite.min.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/getOffsetParent.js","../../src/dom-utils/isTableElement.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/enums.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/utils/computeOffsets.js","../../src/utils/getBasePlacement.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/createPopper.js","../../src/utils/mergeByName.js","../../src/modifiers/computeStyles.js","../../src/utils/math.js","../../src/modifiers/eventListeners.js","../../src/popper-lite.js","../../src/modifiers/popperOffsets.js","../../src/modifiers/applyStyles.js","../../src/utils/detectOverflow.js","../../src/utils/getFreshSideObject.js","../../src/utils/expandToHashMap.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 'height' : 'width';\n\n    switch (variation) {\n      case start:\n        offsets[mainAxis] =\n          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n        break;\n      case end:\n        offsets[mainAxis] =\n          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n        break;\n      default:\n    }\n  }\n\n  return offsets;\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow };\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport type {\n  PositioningStrategy,\n  Offsets,\n  Modifier,\n  ModifierArguments,\n  Rect,\n  Window,\n} from '../types';\nimport {\n  type BasePlacement,\n  type Variation,\n  top,\n  left,\n  right,\n  bottom,\n  end,\n} from '../enums';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getWindow from '../dom-utils/getWindow';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getComputedStyle from '../dom-utils/getComputedStyle';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getVariation from '../utils/getVariation';\nimport { round } from '../utils/math';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type RoundOffsets = (\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>\n) => Offsets;\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets?: boolean | RoundOffsets,\n};\n\nconst unsetSides = {\n  top: 'auto',\n  right: 'auto',\n  bottom: 'auto',\n  left: 'auto',\n};\n\n// Round the offsets to the nearest suitable subpixel based on the DPR.\n// Zooming can change the DPR, but it seems to report a value that will\n// cleanly divide the values into the appropriate subpixels.\nfunction roundOffsetsByDPR({ x, y }): Offsets {\n  const win: Window = window;\n  const dpr = win.devicePixelRatio || 1;\n\n  return {\n    x: round(x * dpr) / dpr || 0,\n    y: round(y * dpr) / dpr || 0,\n  };\n}\n\nexport function mapToStyles({\n  popper,\n  popperRect,\n  placement,\n  variation,\n  offsets,\n  position,\n  gpuAcceleration,\n  adaptive,\n  roundOffsets,\n  isFixed,\n}: {\n  popper: HTMLElement,\n  popperRect: Rect,\n  placement: BasePlacement,\n  variation: ?Variation,\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>,\n  position: PositioningStrategy,\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets: boolean | RoundOffsets,\n  isFixed: boolean,\n}) {\n  let { x = 0, y = 0 } =\n    roundOffsets === true\n      ? roundOffsetsByDPR(offsets)\n      : typeof roundOffsets === 'function'\n      ? roundOffsets(offsets)\n      : offsets;\n\n  const hasX = offsets.hasOwnProperty('x');\n  const hasY = offsets.hasOwnProperty('y');\n\n  let sideX: string = left;\n  let sideY: string = top;\n\n  const win: Window = window;\n\n  if (adaptive) {\n    let offsetParent = getOffsetParent(popper);\n    let heightProp = 'clientHeight';\n    let widthProp = 'clientWidth';\n\n    if (offsetParent === getWindow(popper)) {\n      offsetParent = getDocumentElement(popper);\n\n      if (\n        getComputedStyle(offsetParent).position !== 'static' &&\n        position === 'absolute'\n      ) {\n        heightProp = 'scrollHeight';\n        widthProp = 'scrollWidth';\n      }\n    }\n\n    // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it\n    offsetParent = (offsetParent: Element);\n\n    if (\n      placement === top ||\n      ((placement === left || placement === right) && variation === end)\n    ) {\n      sideY = bottom;\n      const offsetY =\n        isFixed && win.visualViewport\n          ? win.visualViewport.height\n          : // $FlowFixMe[prop-missing]\n            offsetParent[heightProp];\n      y -= offsetY - popperRect.height;\n      y *= gpuAcceleration ? 1 : -1;\n    }\n\n    if (\n      placement === left ||\n      ((placement === top || placement === bottom) && variation === end)\n    ) {\n      sideX = right;\n      const offsetX =\n        isFixed && win.visualViewport\n          ? win.visualViewport.width\n          : // $FlowFixMe[prop-missing]\n            offsetParent[widthProp];\n      x -= offsetX - popperRect.width;\n      x *= gpuAcceleration ? 1 : -1;\n    }\n  }\n\n  const commonStyles = {\n    position,\n    ...(adaptive && unsetSides),\n  };\n\n  if (gpuAcceleration) {\n    return {\n      ...commonStyles,\n      [sideY]: hasY ? '0' : '',\n      [sideX]: hasX ? '0' : '',\n      // Layer acceleration can disable subpixel rendering which causes slightly\n      // blurry text on low PPI displays, so we want to use 2D transforms\n      // instead\n      transform:\n        (win.devicePixelRatio || 1) <= 1\n          ? `translate(${x}px, ${y}px)`\n          : `translate3d(${x}px, ${y}px, 0)`,\n    };\n  }\n\n  return {\n    ...commonStyles,\n    [sideY]: hasY ? `${y}px` : '',\n    [sideX]: hasX ? `${x}px` : '',\n    transform: '',\n  };\n}\n\nfunction computeStyles({ state, options }: ModifierArguments<Options>) {\n  const {\n    gpuAcceleration = true,\n    adaptive = true,\n    // defaults to use builtin `roundOffsetsByDPR`\n    roundOffsets = true,\n  } = options;\n\n  if (__DEV__) {\n    const transitionProperty =\n      getComputedStyle(state.elements.popper).transitionProperty || '';\n\n    if (\n      adaptive &&\n      ['transform', 'top', 'right', 'bottom', 'left'].some(\n        (property) => transitionProperty.indexOf(property) >= 0\n      )\n    ) {\n      console.warn(\n        [\n          'Popper: Detected CSS transitions on at least one of the following',\n          'CSS properties: \"transform\", \"top\", \"right\", \"bottom\", \"left\".',\n          '\\n\\n',\n          'Disable the \"computeStyles\" modifier\\'s `adaptive` option to allow',\n          'for smooth transitions, or remove these properties from the CSS',\n          'transition declaration on the popper element if only transitioning',\n          'opacity or background-color for example.',\n          '\\n\\n',\n          'We recommend using the popper element as a wrapper around an inner',\n          'element that can have any CSS property transitioned for animations.',\n        ].join(' ')\n      );\n    }\n  }\n\n  const commonStyles = {\n    placement: getBasePlacement(state.placement),\n    variation: getVariation(state.placement),\n    popper: state.elements.popper,\n    popperRect: state.rects.popper,\n    gpuAcceleration,\n    isFixed: 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computeStyles,\n  applyStyles,\n];\n\nconst createPopper = popperGenerator({ defaultModifiers });\n\n// eslint-disable-next-line import/no-unused-modules\nexport { createPopper, popperGenerator, defaultModifiers, detectOverflow };\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport computeOffsets from '../utils/computeOffsets';\n\nfunction popperOffsets({ state, name }: ModifierArguments<{||}>) {\n  // Offsets are the actual position the popper needs to have to be\n  // properly positioned near its reference element\n  // This is the most basic placement, and will be adjusted by\n  // the modifiers in the next step\n  state.modifiersData[name] = computeOffsets({\n    reference: state.rects.reference,\n    element: state.rects.popper,\n    strategy: 'absolute',\n    placement: state.placement,\n  });\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PopperOffsetsModifier = Modifier<'popperOffsets', {||}>;\nexport default ({\n  name: 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Object.assign(element.style, style);\n\n    Object.keys(attributes).forEach((name) => {\n      const value = attributes[name];\n      if (value === false) {\n        element.removeAttribute(name);\n      } else {\n        element.setAttribute(name, value === true ? 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\ No newline at end of file
diff --git a/popperjs/package/dist/umd/popper.js b/popperjs/package/dist/umd/popper.js
new file mode 100644
index 0000000..605f236
--- /dev/null
+++ b/popperjs/package/dist/umd/popper.js
@@ -0,0 +1,1974 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.Popper = {}));
+}(this, (function (exports) { 'use strict';
+
+  function getWindow(node) {
+    if (node == null) {
+      return window;
+    }
+
+    if (node.toString() !== '[object Window]') {
+      var ownerDocument = node.ownerDocument;
+      return ownerDocument ? ownerDocument.defaultView || window : window;
+    }
+
+    return node;
+  }
+
+  function isElement(node) {
+    var OwnElement = getWindow(node).Element;
+    return node instanceof OwnElement || node instanceof Element;
+  }
+
+  function isHTMLElement(node) {
+    var OwnElement = getWindow(node).HTMLElement;
+    return node instanceof OwnElement || node instanceof HTMLElement;
+  }
+
+  function isShadowRoot(node) {
+    // IE 11 has no ShadowRoot
+    if (typeof ShadowRoot === 'undefined') {
+      return false;
+    }
+
+    var OwnElement = getWindow(node).ShadowRoot;
+    return node instanceof OwnElement || node instanceof ShadowRoot;
+  }
+
+  var max = Math.max;
+  var min = Math.min;
+  var round = Math.round;
+
+  function getBoundingClientRect(element, includeScale) {
+    if (includeScale === void 0) {
+      includeScale = false;
+    }
+
+    var rect = element.getBoundingClientRect();
+    var scaleX = 1;
+    var scaleY = 1;
+
+    if (isHTMLElement(element) && includeScale) {
+      var offsetHeight = element.offsetHeight;
+      var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+      // Fallback to 1 in case both values are `0`
+
+      if (offsetWidth > 0) {
+        scaleX = round(rect.width) / offsetWidth || 1;
+      }
+
+      if (offsetHeight > 0) {
+        scaleY = round(rect.height) / offsetHeight || 1;
+      }
+    }
+
+    return {
+      width: rect.width / scaleX,
+      height: rect.height / scaleY,
+      top: rect.top / scaleY,
+      right: rect.right / scaleX,
+      bottom: rect.bottom / scaleY,
+      left: rect.left / scaleX,
+      x: rect.left / scaleX,
+      y: rect.top / scaleY
+    };
+  }
+
+  function getWindowScroll(node) {
+    var win = getWindow(node);
+    var scrollLeft = win.pageXOffset;
+    var scrollTop = win.pageYOffset;
+    return {
+      scrollLeft: scrollLeft,
+      scrollTop: scrollTop
+    };
+  }
+
+  function getHTMLElementScroll(element) {
+    return {
+      scrollLeft: element.scrollLeft,
+      scrollTop: element.scrollTop
+    };
+  }
+
+  function getNodeScroll(node) {
+    if (node === getWindow(node) || !isHTMLElement(node)) {
+      return getWindowScroll(node);
+    } else {
+      return getHTMLElementScroll(node);
+    }
+  }
+
+  function getNodeName(element) {
+    return element ? (element.nodeName || '').toLowerCase() : null;
+  }
+
+  function getDocumentElement(element) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+    element.document) || window.document).documentElement;
+  }
+
+  function getWindowScrollBarX(element) {
+    // If <html> has a CSS width greater than the viewport, then this will be
+    // incorrect for RTL.
+    // Popper 1 is broken in this case and never had a bug report so let's assume
+    // it's not an issue. I don't think anyone ever specifies width on <html>
+    // anyway.
+    // Browsers where the left scrollbar doesn't cause an issue report `0` for
+    // this (e.g. Edge 2019, IE11, Safari)
+    return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+  }
+
+  function getComputedStyle(element) {
+    return getWindow(element).getComputedStyle(element);
+  }
+
+  function isScrollParent(element) {
+    // Firefox wants us to check `-x` and `-y` variations as well
+    var _getComputedStyle = getComputedStyle(element),
+        overflow = _getComputedStyle.overflow,
+        overflowX = _getComputedStyle.overflowX,
+        overflowY = _getComputedStyle.overflowY;
+
+    return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+  }
+
+  function isElementScaled(element) {
+    var rect = element.getBoundingClientRect();
+    var scaleX = round(rect.width) / element.offsetWidth || 1;
+    var scaleY = round(rect.height) / element.offsetHeight || 1;
+    return scaleX !== 1 || scaleY !== 1;
+  } // Returns the composite rect of an element relative to its offsetParent.
+  // Composite means it takes into account transforms as well as layout.
+
+
+  function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+    if (isFixed === void 0) {
+      isFixed = false;
+    }
+
+    var isOffsetParentAnElement = isHTMLElement(offsetParent);
+    var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+    var documentElement = getDocumentElement(offsetParent);
+    var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+    var scroll = {
+      scrollLeft: 0,
+      scrollTop: 0
+    };
+    var offsets = {
+      x: 0,
+      y: 0
+    };
+
+    if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+      if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+      isScrollParent(documentElement)) {
+        scroll = getNodeScroll(offsetParent);
+      }
+
+      if (isHTMLElement(offsetParent)) {
+        offsets = getBoundingClientRect(offsetParent, true);
+        offsets.x += offsetParent.clientLeft;
+        offsets.y += offsetParent.clientTop;
+      } else if (documentElement) {
+        offsets.x = getWindowScrollBarX(documentElement);
+      }
+    }
+
+    return {
+      x: rect.left + scroll.scrollLeft - offsets.x,
+      y: rect.top + scroll.scrollTop - offsets.y,
+      width: rect.width,
+      height: rect.height
+    };
+  }
+
+  // means it doesn't take into account transforms.
+
+  function getLayoutRect(element) {
+    var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+    // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+    var width = element.offsetWidth;
+    var height = element.offsetHeight;
+
+    if (Math.abs(clientRect.width - width) <= 1) {
+      width = clientRect.width;
+    }
+
+    if (Math.abs(clientRect.height - height) <= 1) {
+      height = clientRect.height;
+    }
+
+    return {
+      x: element.offsetLeft,
+      y: element.offsetTop,
+      width: width,
+      height: height
+    };
+  }
+
+  function getParentNode(element) {
+    if (getNodeName(element) === 'html') {
+      return element;
+    }
+
+    return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+      // $FlowFixMe[incompatible-return]
+      // $FlowFixMe[prop-missing]
+      element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+      element.parentNode || ( // DOM Element detected
+      isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+      // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+      getDocumentElement(element) // fallback
+
+    );
+  }
+
+  function getScrollParent(node) {
+    if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+      // $FlowFixMe[incompatible-return]: assume body is always available
+      return node.ownerDocument.body;
+    }
+
+    if (isHTMLElement(node) && isScrollParent(node)) {
+      return node;
+    }
+
+    return getScrollParent(getParentNode(node));
+  }
+
+  /*
+  given a DOM element, return the list of all scroll parents, up the list of ancesors
+  until we get to the top window object. This list is what we attach scroll listeners
+  to, because if any of these parent elements scroll, we'll need to re-calculate the
+  reference element's position.
+  */
+
+  function listScrollParents(element, list) {
+    var _element$ownerDocumen;
+
+    if (list === void 0) {
+      list = [];
+    }
+
+    var scrollParent = getScrollParent(element);
+    var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+    var win = getWindow(scrollParent);
+    var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+    var updatedList = list.concat(target);
+    return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+    updatedList.concat(listScrollParents(getParentNode(target)));
+  }
+
+  function isTableElement(element) {
+    return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+  }
+
+  function getTrueOffsetParent(element) {
+    if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+    getComputedStyle(element).position === 'fixed') {
+      return null;
+    }
+
+    return element.offsetParent;
+  } // `.offsetParent` reports `null` for fixed elements, while absolute elements
+  // return the containing block
+
+
+  function getContainingBlock(element) {
+    var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+    var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+    if (isIE && isHTMLElement(element)) {
+      // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+      var elementCss = getComputedStyle(element);
+
+      if (elementCss.position === 'fixed') {
+        return null;
+      }
+    }
+
+    var currentNode = getParentNode(element);
+
+    while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+      var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+      // create a containing block.
+      // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+      if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+        return currentNode;
+      } else {
+        currentNode = currentNode.parentNode;
+      }
+    }
+
+    return null;
+  } // Gets the closest ancestor positioned element. Handles some edge cases,
+  // such as table ancestors and cross browser bugs.
+
+
+  function getOffsetParent(element) {
+    var window = getWindow(element);
+    var offsetParent = getTrueOffsetParent(element);
+
+    while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+      offsetParent = getTrueOffsetParent(offsetParent);
+    }
+
+    if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+      return window;
+    }
+
+    return offsetParent || getContainingBlock(element) || window;
+  }
+
+  var top = 'top';
+  var bottom = 'bottom';
+  var right = 'right';
+  var left = 'left';
+  var auto = 'auto';
+  var basePlacements = [top, bottom, right, left];
+  var start = 'start';
+  var end = 'end';
+  var clippingParents = 'clippingParents';
+  var viewport = 'viewport';
+  var popper = 'popper';
+  var reference = 'reference';
+  var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
+    return acc.concat([placement + "-" + start, placement + "-" + end]);
+  }, []);
+  var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
+    return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
+  }, []); // modifiers that need to read the DOM
+
+  var beforeRead = 'beforeRead';
+  var read = 'read';
+  var afterRead = 'afterRead'; // pure-logic modifiers
+
+  var beforeMain = 'beforeMain';
+  var main = 'main';
+  var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+  var beforeWrite = 'beforeWrite';
+  var write = 'write';
+  var afterWrite = 'afterWrite';
+  var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
+
+  function order(modifiers) {
+    var map = new Map();
+    var visited = new Set();
+    var result = [];
+    modifiers.forEach(function (modifier) {
+      map.set(modifier.name, modifier);
+    }); // On visiting object, check for its dependencies and visit them recursively
+
+    function sort(modifier) {
+      visited.add(modifier.name);
+      var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+      requires.forEach(function (dep) {
+        if (!visited.has(dep)) {
+          var depModifier = map.get(dep);
+
+          if (depModifier) {
+            sort(depModifier);
+          }
+        }
+      });
+      result.push(modifier);
+    }
+
+    modifiers.forEach(function (modifier) {
+      if (!visited.has(modifier.name)) {
+        // check for visited object
+        sort(modifier);
+      }
+    });
+    return result;
+  }
+
+  function orderModifiers(modifiers) {
+    // order based on dependencies
+    var orderedModifiers = order(modifiers); // order based on phase
+
+    return modifierPhases.reduce(function (acc, phase) {
+      return acc.concat(orderedModifiers.filter(function (modifier) {
+        return modifier.phase === phase;
+      }));
+    }, []);
+  }
+
+  function debounce(fn) {
+    var pending;
+    return function () {
+      if (!pending) {
+        pending = new Promise(function (resolve) {
+          Promise.resolve().then(function () {
+            pending = undefined;
+            resolve(fn());
+          });
+        });
+      }
+
+      return pending;
+    };
+  }
+
+  function format(str) {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    return [].concat(args).reduce(function (p, c) {
+      return p.replace(/%s/, c);
+    }, str);
+  }
+
+  var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+  var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+  var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+  function validateModifiers(modifiers) {
+    modifiers.forEach(function (modifier) {
+      [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+      .filter(function (value, index, self) {
+        return self.indexOf(value) === index;
+      }).forEach(function (key) {
+        switch (key) {
+          case 'name':
+            if (typeof modifier.name !== 'string') {
+              console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+            }
+
+            break;
+
+          case 'enabled':
+            if (typeof modifier.enabled !== 'boolean') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+            }
+
+            break;
+
+          case 'phase':
+            if (modifierPhases.indexOf(modifier.phase) < 0) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+            }
+
+            break;
+
+          case 'fn':
+            if (typeof modifier.fn !== 'function') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+            }
+
+            break;
+
+          case 'effect':
+            if (modifier.effect != null && typeof modifier.effect !== 'function') {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+            }
+
+            break;
+
+          case 'requires':
+            if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+            }
+
+            break;
+
+          case 'requiresIfExists':
+            if (!Array.isArray(modifier.requiresIfExists)) {
+              console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+            }
+
+            break;
+
+          case 'options':
+          case 'data':
+            break;
+
+          default:
+            console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+              return "\"" + s + "\"";
+            }).join(', ') + "; but \"" + key + "\" was provided.");
+        }
+
+        modifier.requires && modifier.requires.forEach(function (requirement) {
+          if (modifiers.find(function (mod) {
+            return mod.name === requirement;
+          }) == null) {
+            console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+          }
+        });
+      });
+    });
+  }
+
+  function uniqueBy(arr, fn) {
+    var identifiers = new Set();
+    return arr.filter(function (item) {
+      var identifier = fn(item);
+
+      if (!identifiers.has(identifier)) {
+        identifiers.add(identifier);
+        return true;
+      }
+    });
+  }
+
+  function getBasePlacement(placement) {
+    return placement.split('-')[0];
+  }
+
+  function mergeByName(modifiers) {
+    var merged = modifiers.reduce(function (merged, current) {
+      var existing = merged[current.name];
+      merged[current.name] = existing ? Object.assign({}, existing, current, {
+        options: Object.assign({}, existing.options, current.options),
+        data: Object.assign({}, existing.data, current.data)
+      }) : current;
+      return merged;
+    }, {}); // IE11 does not support Object.values
+
+    return Object.keys(merged).map(function (key) {
+      return merged[key];
+    });
+  }
+
+  function getViewportRect(element) {
+    var win = getWindow(element);
+    var html = getDocumentElement(element);
+    var visualViewport = win.visualViewport;
+    var width = html.clientWidth;
+    var height = html.clientHeight;
+    var x = 0;
+    var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+    // can be obscured underneath it.
+    // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+    // if it isn't open, so if this isn't available, the popper will be detected
+    // to overflow the bottom of the screen too early.
+
+    if (visualViewport) {
+      width = visualViewport.width;
+      height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+      // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+      // errors due to floating point numbers, so we need to check precision.
+      // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+      // Feature detection fails in mobile emulation mode in Chrome.
+      // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+      // 0.001
+      // Fallback here: "Not Safari" userAgent
+
+      if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+        x = visualViewport.offsetLeft;
+        y = visualViewport.offsetTop;
+      }
+    }
+
+    return {
+      width: width,
+      height: height,
+      x: x + getWindowScrollBarX(element),
+      y: y
+    };
+  }
+
+  // of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+  function getDocumentRect(element) {
+    var _element$ownerDocumen;
+
+    var html = getDocumentElement(element);
+    var winScroll = getWindowScroll(element);
+    var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+    var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+    var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+    var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+    var y = -winScroll.scrollTop;
+
+    if (getComputedStyle(body || html).direction === 'rtl') {
+      x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+    }
+
+    return {
+      width: width,
+      height: height,
+      x: x,
+      y: y
+    };
+  }
+
+  function contains(parent, child) {
+    var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+    if (parent.contains(child)) {
+      return true;
+    } // then fallback to custom implementation with Shadow DOM support
+    else if (rootNode && isShadowRoot(rootNode)) {
+        var next = child;
+
+        do {
+          if (next && parent.isSameNode(next)) {
+            return true;
+          } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+          next = next.parentNode || next.host;
+        } while (next);
+      } // Give up, the result is false
+
+
+    return false;
+  }
+
+  function rectToClientRect(rect) {
+    return Object.assign({}, rect, {
+      left: rect.x,
+      top: rect.y,
+      right: rect.x + rect.width,
+      bottom: rect.y + rect.height
+    });
+  }
+
+  function getInnerBoundingClientRect(element) {
+    var rect = getBoundingClientRect(element);
+    rect.top = rect.top + element.clientTop;
+    rect.left = rect.left + element.clientLeft;
+    rect.bottom = rect.top + element.clientHeight;
+    rect.right = rect.left + element.clientWidth;
+    rect.width = element.clientWidth;
+    rect.height = element.clientHeight;
+    rect.x = rect.left;
+    rect.y = rect.top;
+    return rect;
+  }
+
+  function getClientRectFromMixedType(element, clippingParent) {
+    return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+  } // A "clipping parent" is an overflowable container with the characteristic of
+  // clipping (or hiding) overflowing elements with a position different from
+  // `initial`
+
+
+  function getClippingParents(element) {
+    var clippingParents = listScrollParents(getParentNode(element));
+    var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+    var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+    if (!isElement(clipperElement)) {
+      return [];
+    } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+    return clippingParents.filter(function (clippingParent) {
+      return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+    });
+  } // Gets the maximum area that the element is visible in due to any number of
+  // clipping parents
+
+
+  function getClippingRect(element, boundary, rootBoundary) {
+    var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+    var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+    var firstClippingParent = clippingParents[0];
+    var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+      var rect = getClientRectFromMixedType(element, clippingParent);
+      accRect.top = max(rect.top, accRect.top);
+      accRect.right = min(rect.right, accRect.right);
+      accRect.bottom = min(rect.bottom, accRect.bottom);
+      accRect.left = max(rect.left, accRect.left);
+      return accRect;
+    }, getClientRectFromMixedType(element, firstClippingParent));
+    clippingRect.width = clippingRect.right - clippingRect.left;
+    clippingRect.height = clippingRect.bottom - clippingRect.top;
+    clippingRect.x = clippingRect.left;
+    clippingRect.y = clippingRect.top;
+    return clippingRect;
+  }
+
+  function getVariation(placement) {
+    return placement.split('-')[1];
+  }
+
+  function getMainAxisFromPlacement(placement) {
+    return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+  }
+
+  function computeOffsets(_ref) {
+    var reference = _ref.reference,
+        element = _ref.element,
+        placement = _ref.placement;
+    var basePlacement = placement ? getBasePlacement(placement) : null;
+    var variation = placement ? getVariation(placement) : null;
+    var commonX = reference.x + reference.width / 2 - element.width / 2;
+    var commonY = reference.y + reference.height / 2 - element.height / 2;
+    var offsets;
+
+    switch (basePlacement) {
+      case top:
+        offsets = {
+          x: commonX,
+          y: reference.y - element.height
+        };
+        break;
+
+      case bottom:
+        offsets = {
+          x: commonX,
+          y: reference.y + reference.height
+        };
+        break;
+
+      case right:
+        offsets = {
+          x: reference.x + reference.width,
+          y: commonY
+        };
+        break;
+
+      case left:
+        offsets = {
+          x: reference.x - element.width,
+          y: commonY
+        };
+        break;
+
+      default:
+        offsets = {
+          x: reference.x,
+          y: reference.y
+        };
+    }
+
+    var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+    if (mainAxis != null) {
+      var len = mainAxis === 'y' ? 'height' : 'width';
+
+      switch (variation) {
+        case start:
+          offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+          break;
+
+        case end:
+          offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+          break;
+      }
+    }
+
+    return offsets;
+  }
+
+  function getFreshSideObject() {
+    return {
+      top: 0,
+      right: 0,
+      bottom: 0,
+      left: 0
+    };
+  }
+
+  function mergePaddingObject(paddingObject) {
+    return Object.assign({}, getFreshSideObject(), paddingObject);
+  }
+
+  function expandToHashMap(value, keys) {
+    return keys.reduce(function (hashMap, key) {
+      hashMap[key] = value;
+      return hashMap;
+    }, {});
+  }
+
+  function detectOverflow(state, options) {
+    if (options === void 0) {
+      options = {};
+    }
+
+    var _options = options,
+        _options$placement = _options.placement,
+        placement = _options$placement === void 0 ? state.placement : _options$placement,
+        _options$boundary = _options.boundary,
+        boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+        _options$rootBoundary = _options.rootBoundary,
+        rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+        _options$elementConte = _options.elementContext,
+        elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+        _options$altBoundary = _options.altBoundary,
+        altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+        _options$padding = _options.padding,
+        padding = _options$padding === void 0 ? 0 : _options$padding;
+    var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+    var altContext = elementContext === popper ? reference : popper;
+    var popperRect = state.rects.popper;
+    var element = state.elements[altBoundary ? altContext : elementContext];
+    var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+    var referenceClientRect = getBoundingClientRect(state.elements.reference);
+    var popperOffsets = computeOffsets({
+      reference: referenceClientRect,
+      element: popperRect,
+      strategy: 'absolute',
+      placement: placement
+    });
+    var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+    var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+    // 0 or negative = within the clipping rect
+
+    var overflowOffsets = {
+      top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+      bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+      left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+      right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+    };
+    var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+    if (elementContext === popper && offsetData) {
+      var offset = offsetData[placement];
+      Object.keys(overflowOffsets).forEach(function (key) {
+        var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+        var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+        overflowOffsets[key] += offset[axis] * multiply;
+      });
+    }
+
+    return overflowOffsets;
+  }
+
+  var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+  var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+  var DEFAULT_OPTIONS = {
+    placement: 'bottom',
+    modifiers: [],
+    strategy: 'absolute'
+  };
+
+  function areValidElements() {
+    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+      args[_key] = arguments[_key];
+    }
+
+    return !args.some(function (element) {
+      return !(element && typeof element.getBoundingClientRect === 'function');
+    });
+  }
+
+  function popperGenerator(generatorOptions) {
+    if (generatorOptions === void 0) {
+      generatorOptions = {};
+    }
+
+    var _generatorOptions = generatorOptions,
+        _generatorOptions$def = _generatorOptions.defaultModifiers,
+        defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+        _generatorOptions$def2 = _generatorOptions.defaultOptions,
+        defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+    return function createPopper(reference, popper, options) {
+      if (options === void 0) {
+        options = defaultOptions;
+      }
+
+      var state = {
+        placement: 'bottom',
+        orderedModifiers: [],
+        options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+        modifiersData: {},
+        elements: {
+          reference: reference,
+          popper: popper
+        },
+        attributes: {},
+        styles: {}
+      };
+      var effectCleanupFns = [];
+      var isDestroyed = false;
+      var instance = {
+        state: state,
+        setOptions: function setOptions(setOptionsAction) {
+          var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+          cleanupModifierEffects();
+          state.options = Object.assign({}, defaultOptions, state.options, options);
+          state.scrollParents = {
+            reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+            popper: listScrollParents(popper)
+          }; // Orders the modifiers based on their dependencies and `phase`
+          // properties
+
+          var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+          state.orderedModifiers = orderedModifiers.filter(function (m) {
+            return m.enabled;
+          }); // Validate the provided modifiers so that the consumer will get warned
+          // if one of the modifiers is invalid for any reason
+
+          {
+            var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+              var name = _ref.name;
+              return name;
+            });
+            validateModifiers(modifiers);
+
+            if (getBasePlacement(state.options.placement) === auto) {
+              var flipModifier = state.orderedModifiers.find(function (_ref2) {
+                var name = _ref2.name;
+                return name === 'flip';
+              });
+
+              if (!flipModifier) {
+                console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+              }
+            }
+
+            var _getComputedStyle = getComputedStyle(popper),
+                marginTop = _getComputedStyle.marginTop,
+                marginRight = _getComputedStyle.marginRight,
+                marginBottom = _getComputedStyle.marginBottom,
+                marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+            // cause bugs with positioning, so we'll warn the consumer
+
+
+            if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+              return parseFloat(margin);
+            })) {
+              console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+            }
+          }
+
+          runModifierEffects();
+          return instance.update();
+        },
+        // Sync update – it will always be executed, even if not necessary. This
+        // is useful for low frequency updates where sync behavior simplifies the
+        // logic.
+        // For high frequency updates (e.g. `resize` and `scroll` events), always
+        // prefer the async Popper#update method
+        forceUpdate: function forceUpdate() {
+          if (isDestroyed) {
+            return;
+          }
+
+          var _state$elements = state.elements,
+              reference = _state$elements.reference,
+              popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+          // anymore
+
+          if (!areValidElements(reference, popper)) {
+            {
+              console.error(INVALID_ELEMENT_ERROR);
+            }
+
+            return;
+          } // Store the reference and popper rects to be read by modifiers
+
+
+          state.rects = {
+            reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+            popper: getLayoutRect(popper)
+          }; // Modifiers have the ability to reset the current update cycle. The
+          // most common use case for this is the `flip` modifier changing the
+          // placement, which then needs to re-run all the modifiers, because the
+          // logic was previously ran for the previous placement and is therefore
+          // stale/incorrect
+
+          state.reset = false;
+          state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+          // is filled with the initial data specified by the modifier. This means
+          // it doesn't persist and is fresh on each update.
+          // To ensure persistent data, use `${name}#persistent`
+
+          state.orderedModifiers.forEach(function (modifier) {
+            return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+          });
+          var __debug_loops__ = 0;
+
+          for (var index = 0; index < state.orderedModifiers.length; index++) {
+            {
+              __debug_loops__ += 1;
+
+              if (__debug_loops__ > 100) {
+                console.error(INFINITE_LOOP_ERROR);
+                break;
+              }
+            }
+
+            if (state.reset === true) {
+              state.reset = false;
+              index = -1;
+              continue;
+            }
+
+            var _state$orderedModifie = state.orderedModifiers[index],
+                fn = _state$orderedModifie.fn,
+                _state$orderedModifie2 = _state$orderedModifie.options,
+                _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+                name = _state$orderedModifie.name;
+
+            if (typeof fn === 'function') {
+              state = fn({
+                state: state,
+                options: _options,
+                name: name,
+                instance: instance
+              }) || state;
+            }
+          }
+        },
+        // Async and optimistically optimized update – it will not be executed if
+        // not necessary (debounced to run at most once-per-tick)
+        update: debounce(function () {
+          return new Promise(function (resolve) {
+            instance.forceUpdate();
+            resolve(state);
+          });
+        }),
+        destroy: function destroy() {
+          cleanupModifierEffects();
+          isDestroyed = true;
+        }
+      };
+
+      if (!areValidElements(reference, popper)) {
+        {
+          console.error(INVALID_ELEMENT_ERROR);
+        }
+
+        return instance;
+      }
+
+      instance.setOptions(options).then(function (state) {
+        if (!isDestroyed && options.onFirstUpdate) {
+          options.onFirstUpdate(state);
+        }
+      }); // Modifiers have the ability to execute arbitrary code before the first
+      // update cycle runs. They will be executed in the same order as the update
+      // cycle. This is useful when a modifier adds some persistent data that
+      // other modifiers need to use, but the modifier is run after the dependent
+      // one.
+
+      function runModifierEffects() {
+        state.orderedModifiers.forEach(function (_ref3) {
+          var name = _ref3.name,
+              _ref3$options = _ref3.options,
+              options = _ref3$options === void 0 ? {} : _ref3$options,
+              effect = _ref3.effect;
+
+          if (typeof effect === 'function') {
+            var cleanupFn = effect({
+              state: state,
+              name: name,
+              instance: instance,
+              options: options
+            });
+
+            var noopFn = function noopFn() {};
+
+            effectCleanupFns.push(cleanupFn || noopFn);
+          }
+        });
+      }
+
+      function cleanupModifierEffects() {
+        effectCleanupFns.forEach(function (fn) {
+          return fn();
+        });
+        effectCleanupFns = [];
+      }
+
+      return instance;
+    };
+  }
+
+  var passive = {
+    passive: true
+  };
+
+  function effect$2(_ref) {
+    var state = _ref.state,
+        instance = _ref.instance,
+        options = _ref.options;
+    var _options$scroll = options.scroll,
+        scroll = _options$scroll === void 0 ? true : _options$scroll,
+        _options$resize = options.resize,
+        resize = _options$resize === void 0 ? true : _options$resize;
+    var window = getWindow(state.elements.popper);
+    var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);
+
+    if (scroll) {
+      scrollParents.forEach(function (scrollParent) {
+        scrollParent.addEventListener('scroll', instance.update, passive);
+      });
+    }
+
+    if (resize) {
+      window.addEventListener('resize', instance.update, passive);
+    }
+
+    return function () {
+      if (scroll) {
+        scrollParents.forEach(function (scrollParent) {
+          scrollParent.removeEventListener('scroll', instance.update, passive);
+        });
+      }
+
+      if (resize) {
+        window.removeEventListener('resize', instance.update, passive);
+      }
+    };
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var eventListeners = {
+    name: 'eventListeners',
+    enabled: true,
+    phase: 'write',
+    fn: function fn() {},
+    effect: effect$2,
+    data: {}
+  };
+
+  function popperOffsets(_ref) {
+    var state = _ref.state,
+        name = _ref.name;
+    // Offsets are the actual position the popper needs to have to be
+    // properly positioned near its reference element
+    // This is the most basic placement, and will be adjusted by
+    // the modifiers in the next step
+    state.modifiersData[name] = computeOffsets({
+      reference: state.rects.reference,
+      element: state.rects.popper,
+      strategy: 'absolute',
+      placement: state.placement
+    });
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var popperOffsets$1 = {
+    name: 'popperOffsets',
+    enabled: true,
+    phase: 'read',
+    fn: popperOffsets,
+    data: {}
+  };
+
+  var unsetSides = {
+    top: 'auto',
+    right: 'auto',
+    bottom: 'auto',
+    left: 'auto'
+  }; // Round the offsets to the nearest suitable subpixel based on the DPR.
+  // Zooming can change the DPR, but it seems to report a value that will
+  // cleanly divide the values into the appropriate subpixels.
+
+  function roundOffsetsByDPR(_ref) {
+    var x = _ref.x,
+        y = _ref.y;
+    var win = window;
+    var dpr = win.devicePixelRatio || 1;
+    return {
+      x: round(x * dpr) / dpr || 0,
+      y: round(y * dpr) / dpr || 0
+    };
+  }
+
+  function mapToStyles(_ref2) {
+    var _Object$assign2;
+
+    var popper = _ref2.popper,
+        popperRect = _ref2.popperRect,
+        placement = _ref2.placement,
+        variation = _ref2.variation,
+        offsets = _ref2.offsets,
+        position = _ref2.position,
+        gpuAcceleration = _ref2.gpuAcceleration,
+        adaptive = _ref2.adaptive,
+        roundOffsets = _ref2.roundOffsets,
+        isFixed = _ref2.isFixed;
+
+    var _ref3 = roundOffsets === true ? roundOffsetsByDPR(offsets) : typeof roundOffsets === 'function' ? roundOffsets(offsets) : offsets,
+        _ref3$x = _ref3.x,
+        x = _ref3$x === void 0 ? 0 : _ref3$x,
+        _ref3$y = _ref3.y,
+        y = _ref3$y === void 0 ? 0 : _ref3$y;
+
+    var hasX = offsets.hasOwnProperty('x');
+    var hasY = offsets.hasOwnProperty('y');
+    var sideX = left;
+    var sideY = top;
+    var win = window;
+
+    if (adaptive) {
+      var offsetParent = getOffsetParent(popper);
+      var heightProp = 'clientHeight';
+      var widthProp = 'clientWidth';
+
+      if (offsetParent === getWindow(popper)) {
+        offsetParent = getDocumentElement(popper);
+
+        if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {
+          heightProp = 'scrollHeight';
+          widthProp = 'scrollWidth';
+        }
+      } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+
+
+      offsetParent = offsetParent;
+
+      if (placement === top || (placement === left || placement === right) && variation === end) {
+        sideY = bottom;
+        var offsetY = isFixed && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]
+        offsetParent[heightProp];
+        y -= offsetY - popperRect.height;
+        y *= gpuAcceleration ? 1 : -1;
+      }
+
+      if (placement === left || (placement === top || placement === bottom) && variation === end) {
+        sideX = right;
+        var offsetX = isFixed && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
+        offsetParent[widthProp];
+        x -= offsetX - popperRect.width;
+        x *= gpuAcceleration ? 1 : -1;
+      }
+    }
+
+    var commonStyles = Object.assign({
+      position: position
+    }, adaptive && unsetSides);
+
+    if (gpuAcceleration) {
+      var _Object$assign;
+
+      return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
+    }
+
+    return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
+  }
+
+  function computeStyles(_ref4) {
+    var state = _ref4.state,
+        options = _ref4.options;
+    var _options$gpuAccelerat = options.gpuAcceleration,
+        gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
+        _options$adaptive = options.adaptive,
+        adaptive = _options$adaptive === void 0 ? true : _options$adaptive,
+        _options$roundOffsets = options.roundOffsets,
+        roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;
+
+    {
+      var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
+
+      if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
+        return transitionProperty.indexOf(property) >= 0;
+      })) {
+        console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
+      }
+    }
+
+    var commonStyles = {
+      placement: getBasePlacement(state.placement),
+      variation: getVariation(state.placement),
+      popper: state.elements.popper,
+      popperRect: state.rects.popper,
+      gpuAcceleration: gpuAcceleration,
+      isFixed: state.options.strategy === 'fixed'
+    };
+
+    if (state.modifiersData.popperOffsets != null) {
+      state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {
+        offsets: state.modifiersData.popperOffsets,
+        position: state.options.strategy,
+        adaptive: adaptive,
+        roundOffsets: roundOffsets
+      })));
+    }
+
+    if (state.modifiersData.arrow != null) {
+      state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {
+        offsets: state.modifiersData.arrow,
+        position: 'absolute',
+        adaptive: false,
+        roundOffsets: roundOffsets
+      })));
+    }
+
+    state.attributes.popper = Object.assign({}, state.attributes.popper, {
+      'data-popper-placement': state.placement
+    });
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var computeStyles$1 = {
+    name: 'computeStyles',
+    enabled: true,
+    phase: 'beforeWrite',
+    fn: computeStyles,
+    data: {}
+  };
+
+  // and applies them to the HTMLElements such as popper and arrow
+
+  function applyStyles(_ref) {
+    var state = _ref.state;
+    Object.keys(state.elements).forEach(function (name) {
+      var style = state.styles[name] || {};
+      var attributes = state.attributes[name] || {};
+      var element = state.elements[name]; // arrow is optional + virtual elements
+
+      if (!isHTMLElement(element) || !getNodeName(element)) {
+        return;
+      } // Flow doesn't support to extend this property, but it's the most
+      // effective way to apply styles to an HTMLElement
+      // $FlowFixMe[cannot-write]
+
+
+      Object.assign(element.style, style);
+      Object.keys(attributes).forEach(function (name) {
+        var value = attributes[name];
+
+        if (value === false) {
+          element.removeAttribute(name);
+        } else {
+          element.setAttribute(name, value === true ? '' : value);
+        }
+      });
+    });
+  }
+
+  function effect$1(_ref2) {
+    var state = _ref2.state;
+    var initialStyles = {
+      popper: {
+        position: state.options.strategy,
+        left: '0',
+        top: '0',
+        margin: '0'
+      },
+      arrow: {
+        position: 'absolute'
+      },
+      reference: {}
+    };
+    Object.assign(state.elements.popper.style, initialStyles.popper);
+    state.styles = initialStyles;
+
+    if (state.elements.arrow) {
+      Object.assign(state.elements.arrow.style, initialStyles.arrow);
+    }
+
+    return function () {
+      Object.keys(state.elements).forEach(function (name) {
+        var element = state.elements[name];
+        var attributes = state.attributes[name] || {};
+        var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them
+
+        var style = styleProperties.reduce(function (style, property) {
+          style[property] = '';
+          return style;
+        }, {}); // arrow is optional + virtual elements
+
+        if (!isHTMLElement(element) || !getNodeName(element)) {
+          return;
+        }
+
+        Object.assign(element.style, style);
+        Object.keys(attributes).forEach(function (attribute) {
+          element.removeAttribute(attribute);
+        });
+      });
+    };
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var applyStyles$1 = {
+    name: 'applyStyles',
+    enabled: true,
+    phase: 'write',
+    fn: applyStyles,
+    effect: effect$1,
+    requires: ['computeStyles']
+  };
+
+  function distanceAndSkiddingToXY(placement, rects, offset) {
+    var basePlacement = getBasePlacement(placement);
+    var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;
+
+    var _ref = typeof offset === 'function' ? offset(Object.assign({}, rects, {
+      placement: placement
+    })) : offset,
+        skidding = _ref[0],
+        distance = _ref[1];
+
+    skidding = skidding || 0;
+    distance = (distance || 0) * invertDistance;
+    return [left, right].indexOf(basePlacement) >= 0 ? {
+      x: distance,
+      y: skidding
+    } : {
+      x: skidding,
+      y: distance
+    };
+  }
+
+  function offset(_ref2) {
+    var state = _ref2.state,
+        options = _ref2.options,
+        name = _ref2.name;
+    var _options$offset = options.offset,
+        offset = _options$offset === void 0 ? [0, 0] : _options$offset;
+    var data = placements.reduce(function (acc, placement) {
+      acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);
+      return acc;
+    }, {});
+    var _data$state$placement = data[state.placement],
+        x = _data$state$placement.x,
+        y = _data$state$placement.y;
+
+    if (state.modifiersData.popperOffsets != null) {
+      state.modifiersData.popperOffsets.x += x;
+      state.modifiersData.popperOffsets.y += y;
+    }
+
+    state.modifiersData[name] = data;
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var offset$1 = {
+    name: 'offset',
+    enabled: true,
+    phase: 'main',
+    requires: ['popperOffsets'],
+    fn: offset
+  };
+
+  var hash$1 = {
+    left: 'right',
+    right: 'left',
+    bottom: 'top',
+    top: 'bottom'
+  };
+  function getOppositePlacement(placement) {
+    return placement.replace(/left|right|bottom|top/g, function (matched) {
+      return hash$1[matched];
+    });
+  }
+
+  var hash = {
+    start: 'end',
+    end: 'start'
+  };
+  function getOppositeVariationPlacement(placement) {
+    return placement.replace(/start|end/g, function (matched) {
+      return hash[matched];
+    });
+  }
+
+  function computeAutoPlacement(state, options) {
+    if (options === void 0) {
+      options = {};
+    }
+
+    var _options = options,
+        placement = _options.placement,
+        boundary = _options.boundary,
+        rootBoundary = _options.rootBoundary,
+        padding = _options.padding,
+        flipVariations = _options.flipVariations,
+        _options$allowedAutoP = _options.allowedAutoPlacements,
+        allowedAutoPlacements = _options$allowedAutoP === void 0 ? placements : _options$allowedAutoP;
+    var variation = getVariation(placement);
+    var placements$1 = variation ? flipVariations ? variationPlacements : variationPlacements.filter(function (placement) {
+      return getVariation(placement) === variation;
+    }) : basePlacements;
+    var allowedPlacements = placements$1.filter(function (placement) {
+      return allowedAutoPlacements.indexOf(placement) >= 0;
+    });
+
+    if (allowedPlacements.length === 0) {
+      allowedPlacements = placements$1;
+
+      {
+        console.error(['Popper: The `allowedAutoPlacements` option did not allow any', 'placements. Ensure the `placement` option matches the variation', 'of the allowed placements.', 'For example, "auto" cannot be used to allow "bottom-start".', 'Use "auto-start" instead.'].join(' '));
+      }
+    } // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...
+
+
+    var overflows = allowedPlacements.reduce(function (acc, placement) {
+      acc[placement] = detectOverflow(state, {
+        placement: placement,
+        boundary: boundary,
+        rootBoundary: rootBoundary,
+        padding: padding
+      })[getBasePlacement(placement)];
+      return acc;
+    }, {});
+    return Object.keys(overflows).sort(function (a, b) {
+      return overflows[a] - overflows[b];
+    });
+  }
+
+  function getExpandedFallbackPlacements(placement) {
+    if (getBasePlacement(placement) === auto) {
+      return [];
+    }
+
+    var oppositePlacement = getOppositePlacement(placement);
+    return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];
+  }
+
+  function flip(_ref) {
+    var state = _ref.state,
+        options = _ref.options,
+        name = _ref.name;
+
+    if (state.modifiersData[name]._skip) {
+      return;
+    }
+
+    var _options$mainAxis = options.mainAxis,
+        checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+        _options$altAxis = options.altAxis,
+        checkAltAxis = _options$altAxis === void 0 ? true : _options$altAxis,
+        specifiedFallbackPlacements = options.fallbackPlacements,
+        padding = options.padding,
+        boundary = options.boundary,
+        rootBoundary = options.rootBoundary,
+        altBoundary = options.altBoundary,
+        _options$flipVariatio = options.flipVariations,
+        flipVariations = _options$flipVariatio === void 0 ? true : _options$flipVariatio,
+        allowedAutoPlacements = options.allowedAutoPlacements;
+    var preferredPlacement = state.options.placement;
+    var basePlacement = getBasePlacement(preferredPlacement);
+    var isBasePlacement = basePlacement === preferredPlacement;
+    var fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipVariations ? [getOppositePlacement(preferredPlacement)] : getExpandedFallbackPlacements(preferredPlacement));
+    var placements = [preferredPlacement].concat(fallbackPlacements).reduce(function (acc, placement) {
+      return acc.concat(getBasePlacement(placement) === auto ? computeAutoPlacement(state, {
+        placement: placement,
+        boundary: boundary,
+        rootBoundary: rootBoundary,
+        padding: padding,
+        flipVariations: flipVariations,
+        allowedAutoPlacements: allowedAutoPlacements
+      }) : placement);
+    }, []);
+    var referenceRect = state.rects.reference;
+    var popperRect = state.rects.popper;
+    var checksMap = new Map();
+    var makeFallbackChecks = true;
+    var firstFittingPlacement = placements[0];
+
+    for (var i = 0; i < placements.length; i++) {
+      var placement = placements[i];
+
+      var _basePlacement = getBasePlacement(placement);
+
+      var isStartVariation = getVariation(placement) === start;
+      var isVertical = [top, bottom].indexOf(_basePlacement) >= 0;
+      var len = isVertical ? 'width' : 'height';
+      var overflow = detectOverflow(state, {
+        placement: placement,
+        boundary: boundary,
+        rootBoundary: rootBoundary,
+        altBoundary: altBoundary,
+        padding: padding
+      });
+      var mainVariationSide = isVertical ? isStartVariation ? right : left : isStartVariation ? bottom : top;
+
+      if (referenceRect[len] > popperRect[len]) {
+        mainVariationSide = getOppositePlacement(mainVariationSide);
+      }
+
+      var altVariationSide = getOppositePlacement(mainVariationSide);
+      var checks = [];
+
+      if (checkMainAxis) {
+        checks.push(overflow[_basePlacement] <= 0);
+      }
+
+      if (checkAltAxis) {
+        checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);
+      }
+
+      if (checks.every(function (check) {
+        return check;
+      })) {
+        firstFittingPlacement = placement;
+        makeFallbackChecks = false;
+        break;
+      }
+
+      checksMap.set(placement, checks);
+    }
+
+    if (makeFallbackChecks) {
+      // `2` may be desired in some cases – research later
+      var numberOfChecks = flipVariations ? 3 : 1;
+
+      var _loop = function _loop(_i) {
+        var fittingPlacement = placements.find(function (placement) {
+          var checks = checksMap.get(placement);
+
+          if (checks) {
+            return checks.slice(0, _i).every(function (check) {
+              return check;
+            });
+          }
+        });
+
+        if (fittingPlacement) {
+          firstFittingPlacement = fittingPlacement;
+          return "break";
+        }
+      };
+
+      for (var _i = numberOfChecks; _i > 0; _i--) {
+        var _ret = _loop(_i);
+
+        if (_ret === "break") break;
+      }
+    }
+
+    if (state.placement !== firstFittingPlacement) {
+      state.modifiersData[name]._skip = true;
+      state.placement = firstFittingPlacement;
+      state.reset = true;
+    }
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var flip$1 = {
+    name: 'flip',
+    enabled: true,
+    phase: 'main',
+    fn: flip,
+    requiresIfExists: ['offset'],
+    data: {
+      _skip: false
+    }
+  };
+
+  function getAltAxis(axis) {
+    return axis === 'x' ? 'y' : 'x';
+  }
+
+  function within(min$1, value, max$1) {
+    return max(min$1, min(value, max$1));
+  }
+  function withinMaxClamp(min, value, max) {
+    var v = within(min, value, max);
+    return v > max ? max : v;
+  }
+
+  function preventOverflow(_ref) {
+    var state = _ref.state,
+        options = _ref.options,
+        name = _ref.name;
+    var _options$mainAxis = options.mainAxis,
+        checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+        _options$altAxis = options.altAxis,
+        checkAltAxis = _options$altAxis === void 0 ? false : _options$altAxis,
+        boundary = options.boundary,
+        rootBoundary = options.rootBoundary,
+        altBoundary = options.altBoundary,
+        padding = options.padding,
+        _options$tether = options.tether,
+        tether = _options$tether === void 0 ? true : _options$tether,
+        _options$tetherOffset = options.tetherOffset,
+        tetherOffset = _options$tetherOffset === void 0 ? 0 : _options$tetherOffset;
+    var overflow = detectOverflow(state, {
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      padding: padding,
+      altBoundary: altBoundary
+    });
+    var basePlacement = getBasePlacement(state.placement);
+    var variation = getVariation(state.placement);
+    var isBasePlacement = !variation;
+    var mainAxis = getMainAxisFromPlacement(basePlacement);
+    var altAxis = getAltAxis(mainAxis);
+    var popperOffsets = state.modifiersData.popperOffsets;
+    var referenceRect = state.rects.reference;
+    var popperRect = state.rects.popper;
+    var tetherOffsetValue = typeof tetherOffset === 'function' ? tetherOffset(Object.assign({}, state.rects, {
+      placement: state.placement
+    })) : tetherOffset;
+    var normalizedTetherOffsetValue = typeof tetherOffsetValue === 'number' ? {
+      mainAxis: tetherOffsetValue,
+      altAxis: tetherOffsetValue
+    } : Object.assign({
+      mainAxis: 0,
+      altAxis: 0
+    }, tetherOffsetValue);
+    var offsetModifierState = state.modifiersData.offset ? state.modifiersData.offset[state.placement] : null;
+    var data = {
+      x: 0,
+      y: 0
+    };
+
+    if (!popperOffsets) {
+      return;
+    }
+
+    if (checkMainAxis) {
+      var _offsetModifierState$;
+
+      var mainSide = mainAxis === 'y' ? top : left;
+      var altSide = mainAxis === 'y' ? bottom : right;
+      var len = mainAxis === 'y' ? 'height' : 'width';
+      var offset = popperOffsets[mainAxis];
+      var min$1 = offset + overflow[mainSide];
+      var max$1 = offset - overflow[altSide];
+      var additive = tether ? -popperRect[len] / 2 : 0;
+      var minLen = variation === start ? referenceRect[len] : popperRect[len];
+      var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go
+      // outside the reference bounds
+
+      var arrowElement = state.elements.arrow;
+      var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {
+        width: 0,
+        height: 0
+      };
+      var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();
+      var arrowPaddingMin = arrowPaddingObject[mainSide];
+      var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want
+      // to include its full size in the calculation. If the reference is small
+      // and near the edge of a boundary, the popper can overflow even if the
+      // reference is not overflowing as well (e.g. virtual elements with no
+      // width or height)
+
+      var arrowLen = within(0, referenceRect[len], arrowRect[len]);
+      var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis : minLen - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis;
+      var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis : maxLen + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis;
+      var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);
+      var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;
+      var offsetModifierValue = (_offsetModifierState$ = offsetModifierState == null ? void 0 : offsetModifierState[mainAxis]) != null ? _offsetModifierState$ : 0;
+      var tetherMin = offset + minOffset - offsetModifierValue - clientOffset;
+      var tetherMax = offset + maxOffset - offsetModifierValue;
+      var preventedOffset = within(tether ? min(min$1, tetherMin) : min$1, offset, tether ? max(max$1, tetherMax) : max$1);
+      popperOffsets[mainAxis] = preventedOffset;
+      data[mainAxis] = preventedOffset - offset;
+    }
+
+    if (checkAltAxis) {
+      var _offsetModifierState$2;
+
+      var _mainSide = mainAxis === 'x' ? top : left;
+
+      var _altSide = mainAxis === 'x' ? bottom : right;
+
+      var _offset = popperOffsets[altAxis];
+
+      var _len = altAxis === 'y' ? 'height' : 'width';
+
+      var _min = _offset + overflow[_mainSide];
+
+      var _max = _offset - overflow[_altSide];
+
+      var isOriginSide = [top, left].indexOf(basePlacement) !== -1;
+
+      var _offsetModifierValue = (_offsetModifierState$2 = offsetModifierState == null ? void 0 : offsetModifierState[altAxis]) != null ? _offsetModifierState$2 : 0;
+
+      var _tetherMin = isOriginSide ? _min : _offset - referenceRect[_len] - popperRect[_len] - _offsetModifierValue + normalizedTetherOffsetValue.altAxis;
+
+      var _tetherMax = isOriginSide ? _offset + referenceRect[_len] + popperRect[_len] - _offsetModifierValue - normalizedTetherOffsetValue.altAxis : _max;
+
+      var _preventedOffset = tether && isOriginSide ? withinMaxClamp(_tetherMin, _offset, _tetherMax) : within(tether ? _tetherMin : _min, _offset, tether ? _tetherMax : _max);
+
+      popperOffsets[altAxis] = _preventedOffset;
+      data[altAxis] = _preventedOffset - _offset;
+    }
+
+    state.modifiersData[name] = data;
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var preventOverflow$1 = {
+    name: 'preventOverflow',
+    enabled: true,
+    phase: 'main',
+    fn: preventOverflow,
+    requiresIfExists: ['offset']
+  };
+
+  var toPaddingObject = function toPaddingObject(padding, state) {
+    padding = typeof padding === 'function' ? padding(Object.assign({}, state.rects, {
+      placement: state.placement
+    })) : padding;
+    return mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+  };
+
+  function arrow(_ref) {
+    var _state$modifiersData$;
+
+    var state = _ref.state,
+        name = _ref.name,
+        options = _ref.options;
+    var arrowElement = state.elements.arrow;
+    var popperOffsets = state.modifiersData.popperOffsets;
+    var basePlacement = getBasePlacement(state.placement);
+    var axis = getMainAxisFromPlacement(basePlacement);
+    var isVertical = [left, right].indexOf(basePlacement) >= 0;
+    var len = isVertical ? 'height' : 'width';
+
+    if (!arrowElement || !popperOffsets) {
+      return;
+    }
+
+    var paddingObject = toPaddingObject(options.padding, state);
+    var arrowRect = getLayoutRect(arrowElement);
+    var minProp = axis === 'y' ? top : left;
+    var maxProp = axis === 'y' ? bottom : right;
+    var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];
+    var startDiff = popperOffsets[axis] - state.rects.reference[axis];
+    var arrowOffsetParent = getOffsetParent(arrowElement);
+    var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;
+    var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is
+    // outside of the popper bounds
+
+    var min = paddingObject[minProp];
+    var max = clientSize - arrowRect[len] - paddingObject[maxProp];
+    var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
+    var offset = within(min, center, max); // Prevents breaking syntax highlighting...
+
+    var axisProp = axis;
+    state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);
+  }
+
+  function effect(_ref2) {
+    var state = _ref2.state,
+        options = _ref2.options;
+    var _options$element = options.element,
+        arrowElement = _options$element === void 0 ? '[data-popper-arrow]' : _options$element;
+
+    if (arrowElement == null) {
+      return;
+    } // CSS selector
+
+
+    if (typeof arrowElement === 'string') {
+      arrowElement = state.elements.popper.querySelector(arrowElement);
+
+      if (!arrowElement) {
+        return;
+      }
+    }
+
+    {
+      if (!isHTMLElement(arrowElement)) {
+        console.error(['Popper: "arrow" element must be an HTMLElement (not an SVGElement).', 'To use an SVG arrow, wrap it in an HTMLElement that will be used as', 'the arrow.'].join(' '));
+      }
+    }
+
+    if (!contains(state.elements.popper, arrowElement)) {
+      {
+        console.error(['Popper: "arrow" modifier\'s `element` must be a child of the popper', 'element.'].join(' '));
+      }
+
+      return;
+    }
+
+    state.elements.arrow = arrowElement;
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var arrow$1 = {
+    name: 'arrow',
+    enabled: true,
+    phase: 'main',
+    fn: arrow,
+    effect: effect,
+    requires: ['popperOffsets'],
+    requiresIfExists: ['preventOverflow']
+  };
+
+  function getSideOffsets(overflow, rect, preventedOffsets) {
+    if (preventedOffsets === void 0) {
+      preventedOffsets = {
+        x: 0,
+        y: 0
+      };
+    }
+
+    return {
+      top: overflow.top - rect.height - preventedOffsets.y,
+      right: overflow.right - rect.width + preventedOffsets.x,
+      bottom: overflow.bottom - rect.height + preventedOffsets.y,
+      left: overflow.left - rect.width - preventedOffsets.x
+    };
+  }
+
+  function isAnySideFullyClipped(overflow) {
+    return [top, right, bottom, left].some(function (side) {
+      return overflow[side] >= 0;
+    });
+  }
+
+  function hide(_ref) {
+    var state = _ref.state,
+        name = _ref.name;
+    var referenceRect = state.rects.reference;
+    var popperRect = state.rects.popper;
+    var preventedOffsets = state.modifiersData.preventOverflow;
+    var referenceOverflow = detectOverflow(state, {
+      elementContext: 'reference'
+    });
+    var popperAltOverflow = detectOverflow(state, {
+      altBoundary: true
+    });
+    var referenceClippingOffsets = getSideOffsets(referenceOverflow, referenceRect);
+    var popperEscapeOffsets = getSideOffsets(popperAltOverflow, popperRect, preventedOffsets);
+    var isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
+    var hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
+    state.modifiersData[name] = {
+      referenceClippingOffsets: referenceClippingOffsets,
+      popperEscapeOffsets: popperEscapeOffsets,
+      isReferenceHidden: isReferenceHidden,
+      hasPopperEscaped: hasPopperEscaped
+    };
+    state.attributes.popper = Object.assign({}, state.attributes.popper, {
+      'data-popper-reference-hidden': isReferenceHidden,
+      'data-popper-escaped': hasPopperEscaped
+    });
+  } // eslint-disable-next-line import/no-unused-modules
+
+
+  var hide$1 = {
+    name: 'hide',
+    enabled: true,
+    phase: 'main',
+    requiresIfExists: ['preventOverflow'],
+    fn: hide
+  };
+
+  var defaultModifiers$1 = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1];
+  var createPopper$1 = /*#__PURE__*/popperGenerator({
+    defaultModifiers: defaultModifiers$1
+  }); // eslint-disable-next-line import/no-unused-modules
+
+  var defaultModifiers = [eventListeners, popperOffsets$1, computeStyles$1, applyStyles$1, offset$1, flip$1, preventOverflow$1, arrow$1, hide$1];
+  var createPopper = /*#__PURE__*/popperGenerator({
+    defaultModifiers: defaultModifiers
+  }); // eslint-disable-next-line import/no-unused-modules
+
+  exports.applyStyles = applyStyles$1;
+  exports.arrow = arrow$1;
+  exports.computeStyles = computeStyles$1;
+  exports.createPopper = createPopper;
+  exports.createPopperLite = createPopper$1;
+  exports.defaultModifiers = defaultModifiers;
+  exports.detectOverflow = detectOverflow;
+  exports.eventListeners = eventListeners;
+  exports.flip = flip$1;
+  exports.hide = hide$1;
+  exports.offset = offset$1;
+  exports.popperGenerator = popperGenerator;
+  exports.popperOffsets = popperOffsets$1;
+  exports.preventOverflow = preventOverflow$1;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+})));
+//# sourceMappingURL=popper.js.map
diff --git a/popperjs/package/dist/umd/popper.js.map b/popperjs/package/dist/umd/popper.js.map
new file mode 100644
index 0000000..83f8cb9
--- /dev/null
+++ b/popperjs/package/dist/umd/popper.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/utils/math.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/isTableElement.js","../../src/dom-utils/getOffsetParent.js","../../src/enums.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/format.js","../../src/utils/validateModifiers.js","../../src/utils/uniqueBy.js","../../src/utils/getBasePlacement.js","../../src/utils/mergeByName.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/dom-utils/contains.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/utils/computeOffsets.js","../../src/utils/getFreshSideObject.js","../../src/utils/mergePaddingObject.js","../../src/utils/expandToHashMap.js","../../src/utils/detectOverflow.js","../../src/createPopper.js","../../src/modifiers/eventListeners.js","../../src/modifiers/popperOffsets.js","../../src/modifiers/computeStyles.js","../../src/modifiers/applyStyles.js","../../src/modifiers/offset.js","../../src/utils/getOppositePlacement.js","../../src/utils/getOppositeVariationPlacement.js","../../src/utils/computeAutoPlacement.js","../../src/modifiers/flip.js","../../src/utils/getAltAxis.js","../../src/utils/within.js","../../src/modifiers/preventOverflow.js","../../src/modifiers/arrow.js","../../src/modifiers/hide.js","../../src/popper-lite.js","../../src/popper.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\n\nexport default function format(str: string, ...args: Array<string>) {\n  return [...args].reduce((p, c) => p.replace(/%s/, c), str);\n}\n","// @flow\nimport format from './format';\nimport { modifierPhases } from '../enums';\n\nconst INVALID_MODIFIER_ERROR =\n  'Popper: modifier \"%s\" provided an invalid %s property, expected %s but got %s';\nconst MISSING_DEPENDENCY_ERROR =\n  'Popper: modifier \"%s\" requires \"%s\", but \"%s\" modifier is not available';\nconst VALID_PROPERTIES = [\n  'name',\n  'enabled',\n  'phase',\n  'fn',\n  'effect',\n  'requires',\n  'options',\n];\n\nexport default function validateModifiers(modifiers: Array<any>): void {\n  modifiers.forEach((modifier) => {\n    [...Object.keys(modifier), ...VALID_PROPERTIES]\n      // IE11-compatible replacement for `new Set(iterable)`\n      .filter((value, index, self) => self.indexOf(value) === index)\n      .forEach((key) => {\n        switch (key) {\n          case 'name':\n            if (typeof modifier.name !== 'string') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  String(modifier.name),\n                  '\"name\"',\n                  '\"string\"',\n                  `\"${String(modifier.name)}\"`\n                )\n              );\n            }\n            break;\n          case 'enabled':\n            if (typeof modifier.enabled !== 'boolean') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"enabled\"',\n                  '\"boolean\"',\n                  `\"${String(modifier.enabled)}\"`\n                )\n              );\n            }\n            break;\n          case 'phase':\n            if (modifierPhases.indexOf(modifier.phase) < 0) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"phase\"',\n                  `either ${modifierPhases.join(', ')}`,\n                  `\"${String(modifier.phase)}\"`\n                )\n              );\n            }\n            break;\n          case 'fn':\n            if (typeof modifier.fn !== 'function') {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"fn\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'effect':\n            if (\n              modifier.effect != null &&\n              typeof modifier.effect !== 'function'\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"effect\"',\n                  '\"function\"',\n                  `\"${String(modifier.fn)}\"`\n                )\n              );\n            }\n            break;\n          case 'requires':\n            if (\n              modifier.requires != null &&\n              !Array.isArray(modifier.requires)\n            ) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requires\"',\n                  '\"array\"',\n                  `\"${String(modifier.requires)}\"`\n                )\n              );\n            }\n            break;\n          case 'requiresIfExists':\n            if (!Array.isArray(modifier.requiresIfExists)) {\n              console.error(\n                format(\n                  INVALID_MODIFIER_ERROR,\n                  modifier.name,\n                  '\"requiresIfExists\"',\n                  '\"array\"',\n                  `\"${String(modifier.requiresIfExists)}\"`\n                )\n              );\n            }\n            break;\n          case 'options':\n          case 'data':\n            break;\n          default:\n            console.error(\n              `PopperJS: an invalid property has been provided to the \"${\n                modifier.name\n              }\" modifier, valid properties are ${VALID_PROPERTIES.map(\n                (s) => `\"${s}\"`\n              ).join(', ')}; but \"${key}\" was provided.`\n            );\n        }\n\n        modifier.requires &&\n          modifier.requires.forEach((requirement) => {\n            if (modifiers.find((mod) => mod.name === requirement) == null) {\n              console.error(\n                format(\n                  MISSING_DEPENDENCY_ERROR,\n                  String(modifier.name),\n                  requirement,\n                  requirement\n                )\n              );\n            }\n          });\n      });\n  });\n}\n","// @flow\n\nexport default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {\n  const identifiers = new Set();\n\n  return arr.filter(item => {\n    const identifier = fn(item);\n\n    if (!identifiers.has(identifier)) {\n      identifiers.add(identifier);\n      return true;\n    }\n  });\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 'height' : 'width';\n\n    switch (variation) {\n      case start:\n        offsets[mainAxis] =\n          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n        break;\n      case end:\n        offsets[mainAxis] =\n          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n        break;\n      default:\n    }\n  }\n\n  return offsets;\n}\n","// @flow\nimport type { SideObject } from '../types';\n\nexport default function getFreshSideObject(): SideObject {\n  return {\n    top: 0,\n    right: 0,\n    bottom: 0,\n    left: 0,\n  };\n}\n","// @flow\nimport type { SideObject } from '../types';\nimport getFreshSideObject from './getFreshSideObject';\n\nexport default function mergePaddingObject(\n  paddingObject: $Shape<SideObject>\n): SideObject {\n  return {\n    ...getFreshSideObject(),\n    ...paddingObject,\n  };\n}\n","// @flow\n\nexport default function expandToHashMap<\n  T: number | string | boolean,\n  K: string\n>(value: T, keys: Array<K>): { [key: string]: T } {\n  return keys.reduce((hashMap, key) => {\n    hashMap[key] = value;\n    return hashMap;\n  }, {});\n}\n","// @flow\nimport type { State, SideObject, Padding } from '../types';\nimport type { Placement, Boundary, RootBoundary, Context } from '../enums';\nimport getClippingRect from '../dom-utils/getClippingRect';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getBoundingClientRect from '../dom-utils/getBoundingClientRect';\nimport computeOffsets from './computeOffsets';\nimport rectToClientRect from './rectToClientRect';\nimport {\n  clippingParents,\n  reference,\n  popper,\n  bottom,\n  top,\n  right,\n  basePlacements,\n  viewport,\n} from '../enums';\nimport { isElement } from '../dom-utils/instanceOf';\nimport mergePaddingObject from './mergePaddingObject';\nimport expandToHashMap from './expandToHashMap';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  placement: Placement,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  elementContext: Context,\n  altBoundary: boolean,\n  padding: Padding,\n};\n\nexport default function detectOverflow(\n  state: State,\n  options: $Shape<Options> = {}\n): SideObject {\n  const {\n    placement = state.placement,\n    boundary = clippingParents,\n    rootBoundary = viewport,\n    elementContext = popper,\n    altBoundary = false,\n    padding = 0,\n  } = options;\n\n  const paddingObject = mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n\n  const altContext = elementContext === popper ? reference : popper;\n\n  const popperRect = state.rects.popper;\n  const element = state.elements[altBoundary ? altContext : elementContext];\n\n  const clippingClientRect = getClippingRect(\n    isElement(element)\n      ? element\n      : element.contextElement || getDocumentElement(state.elements.popper),\n    boundary,\n    rootBoundary\n  );\n\n  const referenceClientRect = getBoundingClientRect(state.elements.reference);\n\n  const popperOffsets = computeOffsets({\n    reference: referenceClientRect,\n    element: popperRect,\n    strategy: 'absolute',\n    placement,\n  });\n\n  const popperClientRect = rectToClientRect({\n    ...popperRect,\n    ...popperOffsets,\n  });\n\n  const elementClientRect =\n    elementContext === popper ? popperClientRect : referenceClientRect;\n\n  // positive = overflowing the clipping rect\n  // 0 or negative = within the clipping rect\n  const overflowOffsets = {\n    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n    bottom:\n      elementClientRect.bottom -\n      clippingClientRect.bottom +\n      paddingObject.bottom,\n    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n    right:\n      elementClientRect.right - clippingClientRect.right + paddingObject.right,\n  };\n\n  const offsetData = state.modifiersData.offset;\n\n  // Offsets can be applied only to the popper element\n  if (elementContext === popper && offsetData) {\n    const offset = offsetData[placement];\n\n    Object.keys(overflowOffsets).forEach((key) => {\n      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow };\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport getWindow from '../dom-utils/getWindow';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  scroll: boolean,\n  resize: boolean,\n};\n\nconst passive = { passive: true };\n\nfunction effect({ state, instance, options }: ModifierArguments<Options>) {\n  const { scroll = true, resize = true } = options;\n\n  const window = getWindow(state.elements.popper);\n  const scrollParents = [\n    ...state.scrollParents.reference,\n    ...state.scrollParents.popper,\n  ];\n\n  if (scroll) {\n    scrollParents.forEach(scrollParent => {\n      scrollParent.addEventListener('scroll', instance.update, passive);\n    });\n  }\n\n  if (resize) {\n    window.addEventListener('resize', instance.update, passive);\n  }\n\n  return () => {\n    if (scroll) {\n      scrollParents.forEach(scrollParent => {\n        scrollParent.removeEventListener('scroll', instance.update, passive);\n      });\n    }\n\n    if (resize) {\n      window.removeEventListener('resize', instance.update, passive);\n    }\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type EventListenersModifier = Modifier<'eventListeners', Options>;\nexport default ({\n  name: 'eventListeners',\n  enabled: true,\n  phase: 'write',\n  fn: () => {},\n  effect,\n  data: {},\n}: EventListenersModifier);\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport computeOffsets from '../utils/computeOffsets';\n\nfunction popperOffsets({ state, name }: ModifierArguments<{||}>) {\n  // Offsets are the actual position the popper needs to have to be\n  // properly positioned near its reference element\n  // This is the most basic placement, and will be adjusted by\n  // the modifiers in the next step\n  state.modifiersData[name] = computeOffsets({\n    reference: state.rects.reference,\n    element: state.rects.popper,\n    strategy: 'absolute',\n    placement: state.placement,\n  });\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PopperOffsetsModifier = Modifier<'popperOffsets', {||}>;\nexport default ({\n  name: 'popperOffsets',\n  enabled: true,\n  phase: 'read',\n  fn: popperOffsets,\n  data: {},\n}: PopperOffsetsModifier);\n","// @flow\nimport type {\n  PositioningStrategy,\n  Offsets,\n  Modifier,\n  ModifierArguments,\n  Rect,\n  Window,\n} from '../types';\nimport {\n  type BasePlacement,\n  type Variation,\n  top,\n  left,\n  right,\n  bottom,\n  end,\n} from '../enums';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getWindow from '../dom-utils/getWindow';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getComputedStyle from '../dom-utils/getComputedStyle';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getVariation from '../utils/getVariation';\nimport { round } from '../utils/math';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type RoundOffsets = (\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>\n) => Offsets;\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets?: boolean | RoundOffsets,\n};\n\nconst unsetSides = {\n  top: 'auto',\n  right: 'auto',\n  bottom: 'auto',\n  left: 'auto',\n};\n\n// Round the offsets to the nearest suitable subpixel based on the DPR.\n// Zooming can change the DPR, but it seems to report a value that will\n// cleanly divide the values into the appropriate subpixels.\nfunction roundOffsetsByDPR({ x, y }): Offsets {\n  const win: Window = window;\n  const dpr = win.devicePixelRatio || 1;\n\n  return {\n    x: round(x * dpr) / dpr || 0,\n    y: round(y * dpr) / dpr || 0,\n  };\n}\n\nexport function mapToStyles({\n  popper,\n  popperRect,\n  placement,\n  variation,\n  offsets,\n  position,\n  gpuAcceleration,\n  adaptive,\n  roundOffsets,\n  isFixed,\n}: {\n  popper: HTMLElement,\n  popperRect: Rect,\n  placement: BasePlacement,\n  variation: ?Variation,\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>,\n  position: PositioningStrategy,\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets: boolean | RoundOffsets,\n  isFixed: boolean,\n}) {\n  let { x = 0, y = 0 } =\n    roundOffsets === true\n      ? roundOffsetsByDPR(offsets)\n      : typeof roundOffsets === 'function'\n      ? roundOffsets(offsets)\n      : offsets;\n\n  const hasX = offsets.hasOwnProperty('x');\n  const hasY = offsets.hasOwnProperty('y');\n\n  let sideX: string = left;\n  let sideY: string = top;\n\n  const win: Window = window;\n\n  if (adaptive) {\n    let offsetParent = getOffsetParent(popper);\n    let heightProp = 'clientHeight';\n    let widthProp = 'clientWidth';\n\n    if (offsetParent === getWindow(popper)) {\n      offsetParent = getDocumentElement(popper);\n\n      if (\n        getComputedStyle(offsetParent).position !== 'static' &&\n        position === 'absolute'\n      ) {\n        heightProp = 'scrollHeight';\n        widthProp = 'scrollWidth';\n      }\n    }\n\n    // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it\n    offsetParent = (offsetParent: Element);\n\n    if (\n      placement === top ||\n      ((placement === left || placement === right) && variation === end)\n    ) {\n      sideY = bottom;\n      const offsetY =\n        isFixed && win.visualViewport\n          ? win.visualViewport.height\n          : // $FlowFixMe[prop-missing]\n            offsetParent[heightProp];\n      y -= offsetY - popperRect.height;\n      y *= gpuAcceleration ? 1 : -1;\n    }\n\n    if (\n      placement === left ||\n      ((placement === top || placement === bottom) && variation === end)\n    ) {\n      sideX = right;\n      const offsetX =\n        isFixed && win.visualViewport\n          ? win.visualViewport.width\n          : // $FlowFixMe[prop-missing]\n            offsetParent[widthProp];\n      x -= offsetX - popperRect.width;\n      x *= gpuAcceleration ? 1 : -1;\n    }\n  }\n\n  const commonStyles = {\n    position,\n    ...(adaptive && unsetSides),\n  };\n\n  if (gpuAcceleration) {\n    return {\n      ...commonStyles,\n      [sideY]: hasY ? '0' : '',\n      [sideX]: hasX ? '0' : '',\n      // Layer acceleration can disable subpixel rendering which causes slightly\n      // blurry text on low PPI displays, so we want to use 2D transforms\n      // instead\n      transform:\n        (win.devicePixelRatio || 1) <= 1\n          ? `translate(${x}px, ${y}px)`\n          : `translate3d(${x}px, ${y}px, 0)`,\n    };\n  }\n\n  return {\n    ...commonStyles,\n    [sideY]: hasY ? `${y}px` : '',\n    [sideX]: hasX ? `${x}px` : '',\n    transform: '',\n  };\n}\n\nfunction computeStyles({ state, options }: ModifierArguments<Options>) {\n  const {\n    gpuAcceleration = true,\n    adaptive = true,\n    // defaults to use builtin `roundOffsetsByDPR`\n    roundOffsets = true,\n  } = options;\n\n  if (__DEV__) {\n    const transitionProperty =\n      getComputedStyle(state.elements.popper).transitionProperty || '';\n\n    if (\n      adaptive &&\n      ['transform', 'top', 'right', 'bottom', 'left'].some(\n        (property) => transitionProperty.indexOf(property) >= 0\n      )\n    ) {\n      console.warn(\n        [\n          'Popper: Detected CSS transitions on at least one of the following',\n          'CSS properties: \"transform\", \"top\", \"right\", \"bottom\", \"left\".',\n          '\\n\\n',\n          'Disable the \"computeStyles\" modifier\\'s `adaptive` option to allow',\n          'for smooth transitions, or remove these properties from the CSS',\n          'transition declaration on the popper element if only transitioning',\n          'opacity or background-color for example.',\n          '\\n\\n',\n          'We recommend using the popper element as a wrapper around an inner',\n          'element that can have any CSS property transitioned for animations.',\n        ].join(' ')\n      );\n    }\n  }\n\n  const commonStyles = {\n    placement: getBasePlacement(state.placement),\n    variation: getVariation(state.placement),\n    popper: state.elements.popper,\n    popperRect: state.rects.popper,\n    gpuAcceleration,\n    isFixed: state.options.strategy === 'fixed',\n  };\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.styles.popper = {\n      ...state.styles.popper,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.popperOffsets,\n        position: state.options.strategy,\n        adaptive,\n        roundOffsets,\n      }),\n    };\n  }\n\n  if (state.modifiersData.arrow != null) {\n    state.styles.arrow = {\n      ...state.styles.arrow,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.arrow,\n        position: 'absolute',\n        adaptive: false,\n        roundOffsets,\n      }),\n    };\n  }\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-placement': state.placement,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ComputeStylesModifier = Modifier<'computeStyles', Options>;\nexport default ({\n  name: 'computeStyles',\n  enabled: true,\n  phase: 'beforeWrite',\n  fn: computeStyles,\n  data: {},\n}: ComputeStylesModifier);\n","// @flow\nimport type { Modifier, ModifierArguments } from '../types';\nimport getNodeName from '../dom-utils/getNodeName';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// This modifier takes the styles prepared by the `computeStyles` modifier\n// and applies them to the HTMLElements such as popper and arrow\n\nfunction applyStyles({ state }: ModifierArguments<{||}>) {\n  Object.keys(state.elements).forEach((name) => {\n    const style = state.styles[name] || {};\n\n    const attributes = state.attributes[name] || {};\n    const element = state.elements[name];\n\n    // arrow is optional + virtual elements\n    if (!isHTMLElement(element) || !getNodeName(element)) {\n      return;\n    }\n\n    // Flow doesn't support to extend this property, but it's the most\n    // effective way to apply styles to an HTMLElement\n    // $FlowFixMe[cannot-write]\n    Object.assign(element.style, style);\n\n    Object.keys(attributes).forEach((name) => {\n      const value = attributes[name];\n      if (value === false) {\n        element.removeAttribute(name);\n      } else {\n        element.setAttribute(name, value === true ? '' : value);\n      }\n    });\n  });\n}\n\nfunction effect({ state }: ModifierArguments<{||}>) {\n  const initialStyles = {\n    popper: {\n      position: state.options.strategy,\n      left: '0',\n      top: '0',\n      margin: '0',\n    },\n    arrow: {\n      position: 'absolute',\n    },\n    reference: {},\n  };\n\n  Object.assign(state.elements.popper.style, initialStyles.popper);\n  state.styles = initialStyles;\n\n  if (state.elements.arrow) {\n    Object.assign(state.elements.arrow.style, initialStyles.arrow);\n  }\n\n  return () => {\n    Object.keys(state.elements).forEach((name) => {\n      const element = state.elements[name];\n      const attributes = state.attributes[name] || {};\n\n      const styleProperties = Object.keys(\n        state.styles.hasOwnProperty(name)\n          ? state.styles[name]\n          : initialStyles[name]\n      );\n\n      // Set all values to an empty string to unset them\n      const style = styleProperties.reduce((style, property) => {\n        style[property] = '';\n        return style;\n      }, {});\n\n      // arrow is optional + virtual elements\n      if (!isHTMLElement(element) || !getNodeName(element)) {\n        return;\n      }\n\n      Object.assign(element.style, style);\n\n      Object.keys(attributes).forEach((attribute) => {\n        element.removeAttribute(attribute);\n      });\n    });\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ApplyStylesModifier = Modifier<'applyStyles', {||}>;\nexport default ({\n  name: 'applyStyles',\n  enabled: true,\n  phase: 'write',\n  fn: applyStyles,\n  effect,\n  requires: ['computeStyles'],\n}: ApplyStylesModifier);\n","// @flow\nimport type { Placement } from '../enums';\nimport type { ModifierArguments, Modifier, Rect, Offsets } from '../types';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport { top, left, right, placements } from '../enums';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type OffsetsFunction = ({\n  popper: Rect,\n  reference: Rect,\n  placement: Placement,\n}) => [?number, ?number];\n\ntype Offset = OffsetsFunction | [?number, ?number];\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  offset: Offset,\n};\n\nexport function distanceAndSkiddingToXY(\n  placement: Placement,\n  rects: { popper: Rect, reference: Rect },\n  offset: Offset\n): Offsets {\n  const basePlacement = getBasePlacement(placement);\n  const invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;\n\n  let [skidding, distance] =\n    typeof offset === 'function'\n      ? offset({\n          ...rects,\n          placement,\n        })\n      : offset;\n\n  skidding = skidding || 0;\n  distance = (distance || 0) * invertDistance;\n\n  return [left, right].indexOf(basePlacement) >= 0\n    ? { x: distance, y: skidding }\n    : { x: skidding, y: distance };\n}\n\nfunction offset({ state, options, name }: ModifierArguments<Options>) {\n  const { offset = [0, 0] } = options;\n\n  const data = placements.reduce((acc, placement) => {\n    acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);\n    return acc;\n  }, {});\n\n  const { x, y } = data[state.placement];\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.modifiersData.popperOffsets.x += x;\n    state.modifiersData.popperOffsets.y += y;\n  }\n\n  state.modifiersData[name] = data;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type OffsetModifier = Modifier<'offset', Options>;\nexport default ({\n  name: 'offset',\n  enabled: true,\n  phase: 'main',\n  requires: ['popperOffsets'],\n  fn: offset,\n}: OffsetModifier);\n","// @flow\nimport type { Placement } from '../enums';\n\nconst hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n\nexport default function getOppositePlacement(placement: Placement): Placement {\n  return (placement.replace(\n    /left|right|bottom|top/g,\n    matched => hash[matched]\n  ): any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nconst hash = { start: 'end', end: 'start' };\n\nexport default function getOppositeVariationPlacement(\n  placement: Placement\n): Placement {\n  return (placement.replace(/start|end/g, matched => hash[matched]): any);\n}\n","// @flow\nimport type { State, Padding } from '../types';\nimport type {\n  Placement,\n  ComputedPlacement,\n  Boundary,\n  RootBoundary,\n} from '../enums';\nimport getVariation from './getVariation';\nimport {\n  variationPlacements,\n  basePlacements,\n  placements as allPlacements,\n} from '../enums';\nimport detectOverflow from './detectOverflow';\nimport getBasePlacement from './getBasePlacement';\n\ntype Options = {\n  placement: Placement,\n  padding: Padding,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  flipVariations: boolean,\n  allowedAutoPlacements?: Array<Placement>,\n};\n\ntype OverflowsMap = { [ComputedPlacement]: number };\n\nexport default function computeAutoPlacement(\n  state: $Shape<State>,\n  options: Options = {}\n): Array<ComputedPlacement> {\n  const {\n    placement,\n    boundary,\n    rootBoundary,\n    padding,\n    flipVariations,\n    allowedAutoPlacements = allPlacements,\n  } = options;\n\n  const variation = getVariation(placement);\n\n  const placements = variation\n    ? flipVariations\n      ? variationPlacements\n      : variationPlacements.filter(\n          (placement) => getVariation(placement) === variation\n        )\n    : basePlacements;\n\n  let allowedPlacements = placements.filter(\n    (placement) => allowedAutoPlacements.indexOf(placement) >= 0\n  );\n\n  if (allowedPlacements.length === 0) {\n    allowedPlacements = placements;\n\n    if (__DEV__) {\n      console.error(\n        [\n          'Popper: The `allowedAutoPlacements` option did not allow any',\n          'placements. Ensure the `placement` option matches the variation',\n          'of the allowed placements.',\n          'For example, \"auto\" cannot be used to allow \"bottom-start\".',\n          'Use \"auto-start\" instead.',\n        ].join(' ')\n      );\n    }\n  }\n\n  // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...\n  const overflows: OverflowsMap = allowedPlacements.reduce((acc, placement) => {\n    acc[placement] = detectOverflow(state, {\n      placement,\n      boundary,\n      rootBoundary,\n      padding,\n    })[getBasePlacement(placement)];\n\n    return acc;\n  }, {});\n\n  return Object.keys(overflows).sort((a, b) => overflows[a] - overflows[b]);\n}\n","// @flow\nimport type { Placement, Boundary, RootBoundary } from '../enums';\nimport type { ModifierArguments, Modifier, Padding } from '../types';\nimport getOppositePlacement from '../utils/getOppositePlacement';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getOppositeVariationPlacement from '../utils/getOppositeVariationPlacement';\nimport detectOverflow from '../utils/detectOverflow';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\nimport { bottom, top, start, right, left, auto } from '../enums';\nimport getVariation from '../utils/getVariation';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  mainAxis: boolean,\n  altAxis: boolean,\n  fallbackPlacements: Array<Placement>,\n  padding: Padding,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  altBoundary: boolean,\n  flipVariations: boolean,\n  allowedAutoPlacements: Array<Placement>,\n};\n\nfunction getExpandedFallbackPlacements(placement: Placement): Array<Placement> {\n  if (getBasePlacement(placement) === auto) {\n    return [];\n  }\n\n  const oppositePlacement = getOppositePlacement(placement);\n\n  return [\n    getOppositeVariationPlacement(placement),\n    oppositePlacement,\n    getOppositeVariationPlacement(oppositePlacement),\n  ];\n}\n\nfunction flip({ state, options, name }: ModifierArguments<Options>) {\n  if (state.modifiersData[name]._skip) {\n    return;\n  }\n\n  const {\n    mainAxis: checkMainAxis = true,\n    altAxis: checkAltAxis = true,\n    fallbackPlacements: specifiedFallbackPlacements,\n    padding,\n    boundary,\n    rootBoundary,\n    altBoundary,\n    flipVariations = true,\n    allowedAutoPlacements,\n  } = options;\n\n  const preferredPlacement = state.options.placement;\n  const basePlacement = getBasePlacement(preferredPlacement);\n  const isBasePlacement = basePlacement === preferredPlacement;\n\n  const fallbackPlacements =\n    specifiedFallbackPlacements ||\n    (isBasePlacement || !flipVariations\n      ? [getOppositePlacement(preferredPlacement)]\n      : getExpandedFallbackPlacements(preferredPlacement));\n\n  const placements = [preferredPlacement, ...fallbackPlacements].reduce(\n    (acc, placement) => {\n      return acc.concat(\n        getBasePlacement(placement) === auto\n          ? computeAutoPlacement(state, {\n              placement,\n              boundary,\n              rootBoundary,\n              padding,\n              flipVariations,\n              allowedAutoPlacements,\n            })\n          : placement\n      );\n    },\n    []\n  );\n\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n\n  const checksMap = new Map();\n  let makeFallbackChecks = true;\n  let firstFittingPlacement = placements[0];\n\n  for (let i = 0; i < placements.length; i++) {\n    const placement = placements[i];\n    const basePlacement = getBasePlacement(placement);\n    const isStartVariation = getVariation(placement) === start;\n    const isVertical = [top, bottom].indexOf(basePlacement) >= 0;\n    const len = isVertical ? 'width' : 'height';\n\n    const overflow = detectOverflow(state, {\n      placement,\n      boundary,\n      rootBoundary,\n      altBoundary,\n      padding,\n    });\n\n    let mainVariationSide: any = isVertical\n      ? isStartVariation\n        ? right\n        : left\n      : isStartVariation\n      ? bottom\n      : top;\n\n    if (referenceRect[len] > popperRect[len]) {\n      mainVariationSide = getOppositePlacement(mainVariationSide);\n    }\n\n    const altVariationSide: any = getOppositePlacement(mainVariationSide);\n\n    const checks = [];\n\n    if (checkMainAxis) {\n      checks.push(overflow[basePlacement] <= 0);\n    }\n\n    if (checkAltAxis) {\n      checks.push(\n        overflow[mainVariationSide] <= 0,\n        overflow[altVariationSide] <= 0\n      );\n    }\n\n    if (checks.every((check) => check)) {\n      firstFittingPlacement = placement;\n      makeFallbackChecks = false;\n      break;\n    }\n\n    checksMap.set(placement, checks);\n  }\n\n  if (makeFallbackChecks) {\n    // `2` may be desired in some cases – research later\n    const numberOfChecks = flipVariations ? 3 : 1;\n\n    for (let i = numberOfChecks; i > 0; i--) {\n      const fittingPlacement = placements.find((placement) => {\n        const checks = checksMap.get(placement);\n        if (checks) {\n          return checks.slice(0, i).every((check) => check);\n        }\n      });\n\n      if (fittingPlacement) {\n        firstFittingPlacement = fittingPlacement;\n        break;\n      }\n    }\n  }\n\n  if (state.placement !== firstFittingPlacement) {\n    state.modifiersData[name]._skip = true;\n    state.placement = firstFittingPlacement;\n    state.reset = true;\n  }\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type FlipModifier = Modifier<'flip', Options>;\nexport default ({\n  name: 'flip',\n  enabled: true,\n  phase: 'main',\n  fn: flip,\n  requiresIfExists: ['offset'],\n  data: { _skip: false },\n}: FlipModifier);\n","// @flow\n\nexport default function getAltAxis(axis: 'x' | 'y'): 'x' | 'y' {\n  return axis === 'x' ? 'y' : 'x';\n}\n","// @flow\nimport { max as mathMax, min as mathMin } from './math';\n\nexport function within(min: number, value: number, max: number): number {\n  return mathMax(min, mathMin(value, max));\n}\n\nexport function withinMaxClamp(min: number, value: number, max: number) {\n  const v = within(min, value, max);\n  return v > max ? max : v;\n}\n","// @flow\nimport { top, left, right, bottom, start } from '../enums';\nimport type { Placement, Boundary, RootBoundary } from '../enums';\nimport type { Rect, ModifierArguments, Modifier, Padding } from '../types';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';\nimport getAltAxis from '../utils/getAltAxis';\nimport { within, withinMaxClamp } from '../utils/within';\nimport getLayoutRect from '../dom-utils/getLayoutRect';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport detectOverflow from '../utils/detectOverflow';\nimport getVariation from '../utils/getVariation';\nimport getFreshSideObject from '../utils/getFreshSideObject';\nimport { min as mathMin, max as mathMax } from '../utils/math';\n\ntype TetherOffset =\n  | (({\n      popper: Rect,\n      reference: Rect,\n      placement: Placement,\n    }) => number | { mainAxis: number, altAxis: number })\n  | number\n  | { mainAxis: number, altAxis: number };\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  /* Prevents boundaries overflow on the main axis */\n  mainAxis: boolean,\n  /* Prevents boundaries overflow on the alternate axis */\n  altAxis: boolean,\n  /* The area to check the popper is overflowing in */\n  boundary: Boundary,\n  /* If the popper is not overflowing the main area, fallback to this one */\n  rootBoundary: RootBoundary,\n  /* Use the reference's \"clippingParents\" boundary context */\n  altBoundary: boolean,\n  /**\n   * Allows the popper to overflow from its boundaries to keep it near its\n   * reference element\n   */\n  tether: boolean,\n  /* Offsets when the `tether` option should activate */\n  tetherOffset: TetherOffset,\n  /* Sets a padding to the provided boundary */\n  padding: Padding,\n};\n\nfunction preventOverflow({ state, options, name }: ModifierArguments<Options>) {\n  const {\n    mainAxis: checkMainAxis = true,\n    altAxis: checkAltAxis = false,\n    boundary,\n    rootBoundary,\n    altBoundary,\n    padding,\n    tether = true,\n    tetherOffset = 0,\n  } = options;\n\n  const overflow = detectOverflow(state, {\n    boundary,\n    rootBoundary,\n    padding,\n    altBoundary,\n  });\n  const basePlacement = getBasePlacement(state.placement);\n  const variation = getVariation(state.placement);\n  const isBasePlacement = !variation;\n  const mainAxis = getMainAxisFromPlacement(basePlacement);\n  const altAxis = getAltAxis(mainAxis);\n  const popperOffsets = state.modifiersData.popperOffsets;\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n  const tetherOffsetValue =\n    typeof tetherOffset === 'function'\n      ? tetherOffset({\n          ...state.rects,\n          placement: state.placement,\n        })\n      : tetherOffset;\n  const normalizedTetherOffsetValue =\n    typeof tetherOffsetValue === 'number'\n      ? { mainAxis: tetherOffsetValue, altAxis: tetherOffsetValue }\n      : { mainAxis: 0, altAxis: 0, ...tetherOffsetValue };\n  const offsetModifierState = state.modifiersData.offset\n    ? state.modifiersData.offset[state.placement]\n    : null;\n\n  const data = { x: 0, y: 0 };\n\n  if (!popperOffsets) {\n    return;\n  }\n\n  if (checkMainAxis) {\n    const mainSide = mainAxis === 'y' ? top : left;\n    const altSide = mainAxis === 'y' ? bottom : right;\n    const len = mainAxis === 'y' ? 'height' : 'width';\n    const offset = popperOffsets[mainAxis];\n\n    const min = offset + overflow[mainSide];\n    const max = offset - overflow[altSide];\n\n    const additive = tether ? -popperRect[len] / 2 : 0;\n\n    const minLen = variation === start ? referenceRect[len] : popperRect[len];\n    const maxLen = variation === start ? -popperRect[len] : -referenceRect[len];\n\n    // We need to include the arrow in the calculation so the arrow doesn't go\n    // outside the reference bounds\n    const arrowElement = state.elements.arrow;\n    const arrowRect =\n      tether && arrowElement\n        ? getLayoutRect(arrowElement)\n        : { width: 0, height: 0 };\n    const arrowPaddingObject = state.modifiersData['arrow#persistent']\n      ? state.modifiersData['arrow#persistent'].padding\n      : getFreshSideObject();\n    const arrowPaddingMin = arrowPaddingObject[mainSide];\n    const arrowPaddingMax = arrowPaddingObject[altSide];\n\n    // If the reference length is smaller than the arrow length, we don't want\n    // to include its full size in the calculation. If the reference is small\n    // and near the edge of a boundary, the popper can overflow even if the\n    // reference is not overflowing as well (e.g. virtual elements with no\n    // width or height)\n    const arrowLen = within(0, referenceRect[len], arrowRect[len]);\n\n    const minOffset = isBasePlacement\n      ? referenceRect[len] / 2 -\n        additive -\n        arrowLen -\n        arrowPaddingMin -\n        normalizedTetherOffsetValue.mainAxis\n      : minLen -\n        arrowLen -\n        arrowPaddingMin -\n        normalizedTetherOffsetValue.mainAxis;\n    const maxOffset = isBasePlacement\n      ? -referenceRect[len] / 2 +\n        additive +\n        arrowLen +\n        arrowPaddingMax +\n        normalizedTetherOffsetValue.mainAxis\n      : maxLen +\n        arrowLen +\n        arrowPaddingMax +\n        normalizedTetherOffsetValue.mainAxis;\n\n    const arrowOffsetParent =\n      state.elements.arrow && getOffsetParent(state.elements.arrow);\n    const clientOffset = arrowOffsetParent\n      ? mainAxis === 'y'\n        ? arrowOffsetParent.clientTop || 0\n        : arrowOffsetParent.clientLeft || 0\n      : 0;\n\n    const offsetModifierValue = offsetModifierState?.[mainAxis] ?? 0;\n    const tetherMin = offset + minOffset - offsetModifierValue - clientOffset;\n    const tetherMax = offset + maxOffset - offsetModifierValue;\n\n    const preventedOffset = within(\n      tether ? mathMin(min, tetherMin) : min,\n      offset,\n      tether ? mathMax(max, tetherMax) : max\n    );\n\n    popperOffsets[mainAxis] = preventedOffset;\n    data[mainAxis] = preventedOffset - offset;\n  }\n\n  if (checkAltAxis) {\n    const mainSide = mainAxis === 'x' ? top : left;\n    const altSide = mainAxis === 'x' ? bottom : right;\n    const offset = popperOffsets[altAxis];\n\n    const len = altAxis === 'y' ? 'height' : 'width';\n\n    const min = offset + overflow[mainSide];\n    const max = offset - overflow[altSide];\n\n    const isOriginSide = [top, left].indexOf(basePlacement) !== -1;\n\n    const offsetModifierValue = offsetModifierState?.[altAxis] ?? 0;\n    const tetherMin = isOriginSide\n      ? min\n      : offset -\n        referenceRect[len] -\n        popperRect[len] -\n        offsetModifierValue +\n        normalizedTetherOffsetValue.altAxis;\n    const tetherMax = isOriginSide\n      ? offset +\n        referenceRect[len] +\n        popperRect[len] -\n        offsetModifierValue -\n        normalizedTetherOffsetValue.altAxis\n      : max;\n\n    const preventedOffset =\n      tether && isOriginSide\n        ? withinMaxClamp(tetherMin, offset, tetherMax)\n        : within(tether ? tetherMin : min, offset, tether ? tetherMax : max);\n\n    popperOffsets[altAxis] = preventedOffset;\n    data[altAxis] = preventedOffset - offset;\n  }\n\n  state.modifiersData[name] = data;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PreventOverflowModifier = Modifier<'preventOverflow', Options>;\nexport default ({\n  name: 'preventOverflow',\n  enabled: true,\n  phase: 'main',\n  fn: preventOverflow,\n  requiresIfExists: ['offset'],\n}: PreventOverflowModifier);\n","// @flow\nimport type { Modifier, ModifierArguments, Padding, Rect } from '../types';\nimport type { Placement } from '../enums';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getLayoutRect from '../dom-utils/getLayoutRect';\nimport contains from '../dom-utils/contains';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';\nimport { within } from '../utils/within';\nimport mergePaddingObject from '../utils/mergePaddingObject';\nimport expandToHashMap from '../utils/expandToHashMap';\nimport { left, right, basePlacements, top, bottom } from '../enums';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  element: HTMLElement | string | null,\n  padding:\n    | Padding\n    | (({|\n        popper: Rect,\n        reference: Rect,\n        placement: Placement,\n      |}) => Padding),\n};\n\nconst toPaddingObject = (padding, state) => {\n  padding =\n    typeof padding === 'function'\n      ? padding({ ...state.rects, placement: state.placement })\n      : padding;\n\n  return mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n};\n\nfunction arrow({ state, name, options }: ModifierArguments<Options>) {\n  const arrowElement = state.elements.arrow;\n  const popperOffsets = state.modifiersData.popperOffsets;\n  const basePlacement = getBasePlacement(state.placement);\n  const axis = getMainAxisFromPlacement(basePlacement);\n  const isVertical = [left, right].indexOf(basePlacement) >= 0;\n  const len = isVertical ? 'height' : 'width';\n\n  if (!arrowElement || !popperOffsets) {\n    return;\n  }\n\n  const paddingObject = toPaddingObject(options.padding, state);\n  const arrowRect = getLayoutRect(arrowElement);\n  const minProp = axis === 'y' ? top : left;\n  const maxProp = axis === 'y' ? bottom : right;\n\n  const endDiff =\n    state.rects.reference[len] +\n    state.rects.reference[axis] -\n    popperOffsets[axis] -\n    state.rects.popper[len];\n  const startDiff = popperOffsets[axis] - state.rects.reference[axis];\n\n  const arrowOffsetParent = getOffsetParent(arrowElement);\n  const clientSize = arrowOffsetParent\n    ? axis === 'y'\n      ? arrowOffsetParent.clientHeight || 0\n      : arrowOffsetParent.clientWidth || 0\n    : 0;\n\n  const centerToReference = endDiff / 2 - startDiff / 2;\n\n  // Make sure the arrow doesn't overflow the popper if the center point is\n  // outside of the popper bounds\n  const min = paddingObject[minProp];\n  const max = clientSize - arrowRect[len] - paddingObject[maxProp];\n  const center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;\n  const offset = within(min, center, max);\n\n  // Prevents breaking syntax highlighting...\n  const axisProp: string = axis;\n  state.modifiersData[name] = {\n    [axisProp]: offset,\n    centerOffset: offset - center,\n  };\n}\n\nfunction effect({ state, options }: ModifierArguments<Options>) {\n  let { element: arrowElement = '[data-popper-arrow]' } = options;\n\n  if (arrowElement == null) {\n    return;\n  }\n\n  // CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = state.elements.popper.querySelector(arrowElement);\n\n    if (!arrowElement) {\n      return;\n    }\n  }\n\n  if (__DEV__) {\n    if (!isHTMLElement(arrowElement)) {\n      console.error(\n        [\n          'Popper: \"arrow\" element must be an HTMLElement (not an SVGElement).',\n          'To use an SVG arrow, wrap it in an HTMLElement that will be used as',\n          'the arrow.',\n        ].join(' ')\n      );\n    }\n  }\n\n  if (!contains(state.elements.popper, arrowElement)) {\n    if (__DEV__) {\n      console.error(\n        [\n          'Popper: \"arrow\" modifier\\'s `element` must be a child of the popper',\n          'element.',\n        ].join(' ')\n      );\n    }\n\n    return;\n  }\n\n  state.elements.arrow = arrowElement;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ArrowModifier = Modifier<'arrow', Options>;\nexport default ({\n  name: 'arrow',\n  enabled: true,\n  phase: 'main',\n  fn: arrow,\n  effect,\n  requires: ['popperOffsets'],\n  requiresIfExists: ['preventOverflow'],\n}: ArrowModifier);\n","// @flow\nimport type {\n  ModifierArguments,\n  Modifier,\n  Rect,\n  SideObject,\n  Offsets,\n} from '../types';\nimport { top, bottom, left, right } from '../enums';\nimport detectOverflow from '../utils/detectOverflow';\n\nfunction getSideOffsets(\n  overflow: SideObject,\n  rect: Rect,\n  preventedOffsets: Offsets = { x: 0, y: 0 }\n): SideObject {\n  return {\n    top: overflow.top - rect.height - preventedOffsets.y,\n    right: overflow.right - rect.width + preventedOffsets.x,\n    bottom: overflow.bottom - rect.height + preventedOffsets.y,\n    left: overflow.left - rect.width - preventedOffsets.x,\n  };\n}\n\nfunction isAnySideFullyClipped(overflow: SideObject): boolean {\n  return [top, right, bottom, left].some((side) => overflow[side] >= 0);\n}\n\nfunction hide({ state, name }: ModifierArguments<{||}>) {\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n  const preventedOffsets = state.modifiersData.preventOverflow;\n\n  const referenceOverflow = detectOverflow(state, {\n    elementContext: 'reference',\n  });\n  const popperAltOverflow = detectOverflow(state, {\n    altBoundary: true,\n  });\n\n  const referenceClippingOffsets = getSideOffsets(\n    referenceOverflow,\n    referenceRect\n  );\n  const popperEscapeOffsets = getSideOffsets(\n    popperAltOverflow,\n    popperRect,\n    preventedOffsets\n  );\n\n  const isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);\n  const hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);\n\n  state.modifiersData[name] = {\n    referenceClippingOffsets,\n    popperEscapeOffsets,\n    isReferenceHidden,\n    hasPopperEscaped,\n  };\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-reference-hidden': isReferenceHidden,\n    'data-popper-escaped': hasPopperEscaped,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type HideModifier = Modifier<'hide', {||}>;\nexport default ({\n  name: 'hide',\n  enabled: true,\n  phase: 'main',\n  requiresIfExists: ['preventOverflow'],\n  fn: hide,\n}: HideModifier);\n","// @flow\nimport { popperGenerator, detectOverflow } from './createPopper';\n\nimport eventListeners from './modifiers/eventListeners';\nimport popperOffsets from './modifiers/popperOffsets';\nimport computeStyles from './modifiers/computeStyles';\nimport applyStyles from './modifiers/applyStyles';\n\nexport type * from './types';\n\nconst defaultModifiers = [\n  eventListeners,\n  popperOffsets,\n  computeStyles,\n  applyStyles,\n];\n\nconst createPopper = popperGenerator({ defaultModifiers });\n\n// eslint-disable-next-line import/no-unused-modules\nexport { createPopper, popperGenerator, defaultModifiers, detectOverflow };\n","// @flow\nimport { popperGenerator, detectOverflow } from './createPopper';\n\nimport eventListeners from './modifiers/eventListeners';\nimport popperOffsets from './modifiers/popperOffsets';\nimport computeStyles from './modifiers/computeStyles';\nimport applyStyles from './modifiers/applyStyles';\nimport offset from './modifiers/offset';\nimport flip from './modifiers/flip';\nimport preventOverflow from './modifiers/preventOverflow';\nimport arrow from './modifiers/arrow';\nimport hide from './modifiers/hide';\n\nexport type * from './types';\n\nconst defaultModifiers = [\n  eventListeners,\n  popperOffsets,\n  computeStyles,\n  applyStyles,\n  offset,\n  flip,\n  preventOverflow,\n  arrow,\n  hide,\n];\n\nconst createPopper = popperGenerator({ defaultModifiers });\n\n// eslint-disable-next-line import/no-unused-modules\nexport { createPopper, popperGenerator, defaultModifiers, detectOverflow };\n// eslint-disable-next-line import/no-unused-modules\nexport { createPopper as createPopperLite } from './popper-lite';\n// eslint-disable-next-line import/no-unused-modules\nexport * from 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\ No newline at end of file
diff --git a/popperjs/package/dist/umd/popper.min.js b/popperjs/package/dist/umd/popper.min.js
new file mode 100644
index 0000000..51eb737
--- /dev/null
+++ b/popperjs/package/dist/umd/popper.min.js
@@ -0,0 +1,6 @@
+/**
+ * @popperjs/core v2.11.0 - MIT License
+ */
+
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0:g[n])?H:0,H=p?b:i-h[r]-m[r]-u+v.altAxis,h=p?i+h[r]+m[r]-u-v.altAxis:f,a&&p?H=(H=V(H,N(i,h)))>h?h:H:H=V(a?H:b,N(i,a?h:f)),o[n]=H,s[n]=H-i;t.modifiersData[e]=s}},requiresIfExists:["offset"]},re={name:"arrow",enabled:!0,phase:"main",fn:function(e){var t,n=e.state,o=e.name,r=e.options,i=n.elements.arrow,a=n.modifiersData.popperOffsets,s=x(n.placement);if(e=L(s),s=0<=["left","right"].indexOf(s)?"height":"width",i&&a){r=M("number"!=typeof(r="function"==typeof(r=r.padding)?r(Object.assign({},n.rects,{placement:n.placement})):r)?r:k(r,_));var f=d(i),p="y"===e?"top":"left",c="y"===e?"bottom":"right",l=n.rects.reference[s]+n.rects.reference[e]-a[e]-n.rects.popper[s];a=a[e]-n.rects.reference[e],a=(i=(i=y(i))?"y"===e?i.clientHeight||0:i.clientWidth||0:0)/2-f[s]/2+(l/2-a/2),s=V(r[p],N(a,i-f[s]-r[c])),n.modifiersData[o]=((t={})[e]=s,t.centerOffset=s-a,t)}},effect:function(e){var t=e.state;if(null!=(e=void 0===(e=e.options.element)?"[data-popper-arrow]":e)){if("string"==typeof e&&!(e=t.elements.popper.querySelector(e)))return;O(t.elements.popper,e)&&(t.elements.arrow=e)}},requires:["popperOffsets"],requiresIfExists:["preventOverflow"]},ie={name:"hide",enabled:!0,phase:"main",requiresIfExists:["preventOverflow"],fn:function(e){var t=e.state;e=e.name;var n=t.rects.reference,o=t.rects.popper,r=t.modifiersData.preventOverflow,i=W(t,{elementContext:"reference"}),a=W(t,{altBoundary:!0});n=C(i,n),o=C(a,o,r),r=q(n),a=q(o),t.modifiersData[e]={referenceClippingOffsets:n,popperEscapeOffsets:o,isReferenceHidden:r,hasPopperEscaped:a},t.attributes.popper=Object.assign({},t.attributes.popper,{"data-popper-reference-hidden":r,"data-popper-escaped":a})}},ae=H({defaultModifiers:[G,J,Q,Z]}),se=[G,J,Q,Z,$,ne,oe,re,ie],fe=H({defaultModifiers:se});e.applyStyles=Z,e.arrow=re,e.computeStyles=Q,e.createPopper=fe,e.createPopperLite=ae,e.defaultModifiers=se,e.detectOverflow=W,e.eventListeners=G,e.flip=ne,e.hide=ie,e.offset=$,e.popperGenerator=H,e.popperOffsets=J,e.preventOverflow=oe,Object.defineProperty(e,"__esModule",{value:!0})}));
+//# sourceMappingURL=popper.min.js.map
diff --git a/popperjs/package/dist/umd/popper.min.js.flow b/popperjs/package/dist/umd/popper.min.js.flow
new file mode 100644
index 0000000..e745d92
--- /dev/null
+++ b/popperjs/package/dist/umd/popper.min.js.flow
@@ -0,0 +1,3 @@
+// @flow
+
+export * from '../../lib/popper.js'
diff --git a/popperjs/package/dist/umd/popper.min.js.map b/popperjs/package/dist/umd/popper.min.js.map
new file mode 100644
index 0000000..2616955
--- /dev/null
+++ b/popperjs/package/dist/umd/popper.min.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"popper.min.js","sources":["../../src/dom-utils/getWindow.js","../../src/dom-utils/instanceOf.js","../../src/dom-utils/getBoundingClientRect.js","../../src/dom-utils/getWindowScroll.js","../../src/dom-utils/getNodeName.js","../../src/dom-utils/getDocumentElement.js","../../src/dom-utils/getWindowScrollBarX.js","../../src/dom-utils/getComputedStyle.js","../../src/dom-utils/isScrollParent.js","../../src/dom-utils/getCompositeRect.js","../../src/dom-utils/getNodeScroll.js","../../src/dom-utils/getHTMLElementScroll.js","../../src/dom-utils/getLayoutRect.js","../../src/dom-utils/getParentNode.js","../../src/dom-utils/getScrollParent.js","../../src/dom-utils/listScrollParents.js","../../src/dom-utils/getOffsetParent.js","../../src/dom-utils/isTableElement.js","../../src/utils/orderModifiers.js","../../src/utils/debounce.js","../../src/utils/getBasePlacement.js","../../src/dom-utils/contains.js","../../src/utils/rectToClientRect.js","../../src/dom-utils/getClippingRect.js","../../src/enums.js","../../src/dom-utils/getViewportRect.js","../../src/dom-utils/getDocumentRect.js","../../src/utils/getVariation.js","../../src/utils/getMainAxisFromPlacement.js","../../src/utils/computeOffsets.js","../../src/utils/mergePaddingObject.js","../../src/utils/getFreshSideObject.js","../../src/utils/expandToHashMap.js","../../src/utils/detectOverflow.js","../../src/createPopper.js","../../src/utils/mergeByName.js","../../src/modifiers/computeStyles.js","../../src/utils/getOppositePlacement.js","../../src/utils/getOppositeVariationPlacement.js","../../src/modifiers/hide.js","../../src/utils/math.js","../../src/modifiers/eventListeners.js","../../src/modifiers/popperOffsets.js","../../src/modifiers/applyStyles.js","../../src/modifiers/offset.js","../../src/modifiers/flip.js","../../src/utils/computeAutoPlacement.js","../../src/modifiers/preventOverflow.js","../../src/utils/getAltAxis.js","../../src/utils/within.js","../../src/modifiers/arrow.js","../../src/popper-lite.js","../../src/popper.js"],"sourcesContent":["// @flow\nimport type { Window } from '../types';\ndeclare function getWindow(node: Node | Window): Window;\n\nexport default function getWindow(node) {\n  if (node == null) {\n    return window;\n  }\n\n  if (node.toString() !== '[object Window]') {\n    const ownerDocument = node.ownerDocument;\n    return ownerDocument ? ownerDocument.defaultView || window : window;\n  }\n\n  return node;\n}\n","// @flow\nimport getWindow from './getWindow';\n\ndeclare function isElement(node: mixed): boolean %checks(node instanceof\n  Element);\nfunction isElement(node) {\n  const OwnElement = getWindow(node).Element;\n  return node instanceof OwnElement || node instanceof Element;\n}\n\ndeclare function isHTMLElement(node: mixed): boolean %checks(node instanceof\n  HTMLElement);\nfunction isHTMLElement(node) {\n  const OwnElement = getWindow(node).HTMLElement;\n  return node instanceof OwnElement || node instanceof HTMLElement;\n}\n\ndeclare function isShadowRoot(node: mixed): boolean %checks(node instanceof\n  ShadowRoot);\nfunction isShadowRoot(node) {\n  // IE 11 has no ShadowRoot\n  if (typeof ShadowRoot === 'undefined') {\n    return false;\n  }\n  const OwnElement = getWindow(node).ShadowRoot;\n  return node instanceof OwnElement || node instanceof ShadowRoot;\n}\n\nexport { isElement, isHTMLElement, isShadowRoot };\n","// @flow\nimport type { ClientRectObject, VirtualElement } from '../types';\nimport { isHTMLElement } from './instanceOf';\nimport { round } from '../utils/math';\n\nexport default function getBoundingClientRect(\n  element: Element | VirtualElement,\n  includeScale: boolean = false\n): ClientRectObject {\n  const rect = element.getBoundingClientRect();\n  let scaleX = 1;\n  let scaleY = 1;\n\n  if (isHTMLElement(element) && includeScale) {\n    const offsetHeight = element.offsetHeight;\n    const offsetWidth = element.offsetWidth;\n\n    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale\n    // Fallback to 1 in case both values are `0`\n    if (offsetWidth > 0) {\n      scaleX = round(rect.width) / offsetWidth || 1;\n    }\n    if (offsetHeight > 0) {\n      scaleY = round(rect.height) / offsetHeight || 1;\n    }\n  }\n\n  return {\n    width: rect.width / scaleX,\n    height: rect.height / scaleY,\n    top: rect.top / scaleY,\n    right: rect.right / scaleX,\n    bottom: rect.bottom / scaleY,\n    left: rect.left / scaleX,\n    x: rect.left / scaleX,\n    y: rect.top / scaleY,\n  };\n}\n","// @flow\nimport getWindow from './getWindow';\nimport type { Window } from '../types';\n\nexport default function getWindowScroll(node: Node | Window) {\n  const win = getWindow(node);\n  const scrollLeft = win.pageXOffset;\n  const scrollTop = win.pageYOffset;\n\n  return {\n    scrollLeft,\n    scrollTop,\n  };\n}\n","// @flow\nimport type { Window } from '../types';\n\nexport default function getNodeName(element: ?Node | Window): ?string {\n  return element ? (element.nodeName || '').toLowerCase() : null;\n}\n","// @flow\nimport { isElement } from './instanceOf';\nimport type { Window } from '../types';\n\nexport default function getDocumentElement(\n  element: Element | Window\n): HTMLElement {\n  // $FlowFixMe[incompatible-return]: assume body is always available\n  return (\n    (isElement(element)\n      ? element.ownerDocument\n      : // $FlowFixMe[prop-missing]\n        element.document) || window.document\n  ).documentElement;\n}\n","// @flow\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScroll from './getWindowScroll';\n\nexport default function getWindowScrollBarX(element: Element): number {\n  // If <html> has a CSS width greater than the viewport, then this will be\n  // incorrect for RTL.\n  // Popper 1 is broken in this case and never had a bug report so let's assume\n  // it's not an issue. I don't think anyone ever specifies width on <html>\n  // anyway.\n  // Browsers where the left scrollbar doesn't cause an issue report `0` for\n  // this (e.g. Edge 2019, IE11, Safari)\n  return (\n    getBoundingClientRect(getDocumentElement(element)).left +\n    getWindowScroll(element).scrollLeft\n  );\n}\n","// @flow\nimport getWindow from './getWindow';\n\nexport default function getComputedStyle(\n  element: Element\n): CSSStyleDeclaration {\n  return getWindow(element).getComputedStyle(element);\n}\n","// @flow\nimport getComputedStyle from './getComputedStyle';\n\nexport default function isScrollParent(element: HTMLElement): boolean {\n  // Firefox wants us to check `-x` and `-y` variations as well\n  const { overflow, overflowX, overflowY } = getComputedStyle(element);\n  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);\n}\n","// @flow\nimport type { Rect, VirtualElement, Window } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getNodeScroll from './getNodeScroll';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getDocumentElement from './getDocumentElement';\nimport isScrollParent from './isScrollParent';\nimport { round } from '../utils/math';\n\nfunction isElementScaled(element: HTMLElement) {\n  const rect = element.getBoundingClientRect();\n  const scaleX = round(rect.width) / element.offsetWidth || 1;\n  const scaleY = round(rect.height) / element.offsetHeight || 1;\n\n  return scaleX !== 1 || scaleY !== 1;\n}\n\n// Returns the composite rect of an element relative to its offsetParent.\n// Composite means it takes into account transforms as well as layout.\nexport default function getCompositeRect(\n  elementOrVirtualElement: Element | VirtualElement,\n  offsetParent: Element | Window,\n  isFixed: boolean = false\n): Rect {\n  const isOffsetParentAnElement = isHTMLElement(offsetParent);\n  const offsetParentIsScaled =\n    isHTMLElement(offsetParent) && isElementScaled(offsetParent);\n  const documentElement = getDocumentElement(offsetParent);\n  const rect = getBoundingClientRect(\n    elementOrVirtualElement,\n    offsetParentIsScaled\n  );\n\n  let scroll = { scrollLeft: 0, scrollTop: 0 };\n  let offsets = { x: 0, y: 0 };\n\n  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {\n    if (\n      getNodeName(offsetParent) !== 'body' ||\n      // https://github.com/popperjs/popper-core/issues/1078\n      isScrollParent(documentElement)\n    ) {\n      scroll = getNodeScroll(offsetParent);\n    }\n\n    if (isHTMLElement(offsetParent)) {\n      offsets = getBoundingClientRect(offsetParent, true);\n      offsets.x += offsetParent.clientLeft;\n      offsets.y += offsetParent.clientTop;\n    } else if (documentElement) {\n      offsets.x = getWindowScrollBarX(documentElement);\n    }\n  }\n\n  return {\n    x: rect.left + scroll.scrollLeft - offsets.x,\n    y: rect.top + scroll.scrollTop - offsets.y,\n    width: rect.width,\n    height: rect.height,\n  };\n}\n","// @flow\nimport getWindowScroll from './getWindowScroll';\nimport getWindow from './getWindow';\nimport { isHTMLElement } from './instanceOf';\nimport getHTMLElementScroll from './getHTMLElementScroll';\nimport type { Window } from '../types';\n\nexport default function getNodeScroll(node: Node | Window) {\n  if (node === getWindow(node) || !isHTMLElement(node)) {\n    return getWindowScroll(node);\n  } else {\n    return getHTMLElementScroll(node);\n  }\n}\n","// @flow\n\nexport default function getHTMLElementScroll(element: HTMLElement) {\n  return {\n    scrollLeft: element.scrollLeft,\n    scrollTop: element.scrollTop,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getBoundingClientRect from './getBoundingClientRect';\n\n// Returns the layout rect of an element relative to its offsetParent. Layout\n// means it doesn't take into account transforms.\nexport default function getLayoutRect(element: HTMLElement): Rect {\n  const clientRect = getBoundingClientRect(element);\n\n  // Use the clientRect sizes if it's not been transformed.\n  // Fixes https://github.com/popperjs/popper-core/issues/1223\n  let width = element.offsetWidth;\n  let height = element.offsetHeight;\n\n  if (Math.abs(clientRect.width - width) <= 1) {\n    width = clientRect.width;\n  }\n\n  if (Math.abs(clientRect.height - height) <= 1) {\n    height = clientRect.height;\n  }\n\n  return {\n    x: element.offsetLeft,\n    y: element.offsetTop,\n    width,\n    height,\n  };\n}\n","// @flow\nimport getNodeName from './getNodeName';\nimport getDocumentElement from './getDocumentElement';\nimport { isShadowRoot } from './instanceOf';\n\nexport default function getParentNode(element: Node | ShadowRoot): Node {\n  if (getNodeName(element) === 'html') {\n    return element;\n  }\n\n  return (\n    // this is a quicker (but less type safe) way to save quite some bytes from the bundle\n    // $FlowFixMe[incompatible-return]\n    // $FlowFixMe[prop-missing]\n    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node\n    element.parentNode || // DOM Element detected\n    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected\n    // $FlowFixMe[incompatible-call]: HTMLElement is a Node\n    getDocumentElement(element) // fallback\n  );\n}\n","// @flow\nimport getParentNode from './getParentNode';\nimport isScrollParent from './isScrollParent';\nimport getNodeName from './getNodeName';\nimport { isHTMLElement } from './instanceOf';\n\nexport default function getScrollParent(node: Node): HTMLElement {\n  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {\n    // $FlowFixMe[incompatible-return]: assume body is always available\n    return node.ownerDocument.body;\n  }\n\n  if (isHTMLElement(node) && isScrollParent(node)) {\n    return node;\n  }\n\n  return getScrollParent(getParentNode(node));\n}\n","// @flow\nimport getScrollParent from './getScrollParent';\nimport getParentNode from './getParentNode';\nimport getWindow from './getWindow';\nimport type { Window, VisualViewport } from '../types';\nimport isScrollParent from './isScrollParent';\n\n/*\ngiven a DOM element, return the list of all scroll parents, up the list of ancesors\nuntil we get to the top window object. This list is what we attach scroll listeners\nto, because if any of these parent elements scroll, we'll need to re-calculate the\nreference element's position.\n*/\nexport default function listScrollParents(\n  element: Node,\n  list: Array<Element | Window> = []\n): Array<Element | Window | VisualViewport> {\n  const scrollParent = getScrollParent(element);\n  const isBody = scrollParent === element.ownerDocument?.body;\n  const win = getWindow(scrollParent);\n  const target = isBody\n    ? [win].concat(\n        win.visualViewport || [],\n        isScrollParent(scrollParent) ? scrollParent : []\n      )\n    : scrollParent;\n  const updatedList = list.concat(target);\n\n  return isBody\n    ? updatedList\n    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here\n      updatedList.concat(listScrollParents(getParentNode(target)));\n}\n","// @flow\nimport getWindow from './getWindow';\nimport getNodeName from './getNodeName';\nimport getComputedStyle from './getComputedStyle';\nimport { isHTMLElement } from './instanceOf';\nimport isTableElement from './isTableElement';\nimport getParentNode from './getParentNode';\n\nfunction getTrueOffsetParent(element: Element): ?Element {\n  if (\n    !isHTMLElement(element) ||\n    // https://github.com/popperjs/popper-core/issues/837\n    getComputedStyle(element).position === 'fixed'\n  ) {\n    return null;\n  }\n\n  return element.offsetParent;\n}\n\n// `.offsetParent` reports `null` for fixed elements, while absolute elements\n// return the containing block\nfunction getContainingBlock(element: Element) {\n  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;\n  const isIE = navigator.userAgent.indexOf('Trident') !== -1;\n\n  if (isIE && isHTMLElement(element)) {\n    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport\n    const elementCss = getComputedStyle(element);\n    if (elementCss.position === 'fixed') {\n      return null;\n    }\n  }\n\n  let currentNode = getParentNode(element);\n\n  while (\n    isHTMLElement(currentNode) &&\n    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0\n  ) {\n    const css = getComputedStyle(currentNode);\n\n    // This is non-exhaustive but covers the most common CSS properties that\n    // create a containing block.\n    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block\n    if (\n      css.transform !== 'none' ||\n      css.perspective !== 'none' ||\n      css.contain === 'paint' ||\n      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||\n      (isFirefox && css.willChange === 'filter') ||\n      (isFirefox && css.filter && css.filter !== 'none')\n    ) {\n      return currentNode;\n    } else {\n      currentNode = currentNode.parentNode;\n    }\n  }\n\n  return null;\n}\n\n// Gets the closest ancestor positioned element. Handles some edge cases,\n// such as table ancestors and cross browser bugs.\nexport default function getOffsetParent(element: Element) {\n  const window = getWindow(element);\n\n  let offsetParent = getTrueOffsetParent(element);\n\n  while (\n    offsetParent &&\n    isTableElement(offsetParent) &&\n    getComputedStyle(offsetParent).position === 'static'\n  ) {\n    offsetParent = getTrueOffsetParent(offsetParent);\n  }\n\n  if (\n    offsetParent &&\n    (getNodeName(offsetParent) === 'html' ||\n      (getNodeName(offsetParent) === 'body' &&\n        getComputedStyle(offsetParent).position === 'static'))\n  ) {\n    return window;\n  }\n\n  return offsetParent || getContainingBlock(element) || window;\n}\n","// @flow\nimport getNodeName from './getNodeName';\n\nexport default function isTableElement(element: Element): boolean {\n  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;\n}\n","// @flow\nimport type { Modifier } from '../types';\nimport { modifierPhases } from '../enums';\n\n// source: https://stackoverflow.com/questions/49875255\nfunction order(modifiers) {\n  const map = new Map();\n  const visited = new Set();\n  const result = [];\n\n  modifiers.forEach(modifier => {\n    map.set(modifier.name, modifier);\n  });\n\n  // On visiting object, check for its dependencies and visit them recursively\n  function sort(modifier: Modifier<any, any>) {\n    visited.add(modifier.name);\n\n    const requires = [\n      ...(modifier.requires || []),\n      ...(modifier.requiresIfExists || []),\n    ];\n\n    requires.forEach(dep => {\n      if (!visited.has(dep)) {\n        const depModifier = map.get(dep);\n\n        if (depModifier) {\n          sort(depModifier);\n        }\n      }\n    });\n\n    result.push(modifier);\n  }\n\n  modifiers.forEach(modifier => {\n    if (!visited.has(modifier.name)) {\n      // check for visited object\n      sort(modifier);\n    }\n  });\n\n  return result;\n}\n\nexport default function orderModifiers(\n  modifiers: Array<Modifier<any, any>>\n): Array<Modifier<any, any>> {\n  // order based on dependencies\n  const orderedModifiers = order(modifiers);\n\n  // order based on phase\n  return modifierPhases.reduce((acc, phase) => {\n    return acc.concat(\n      orderedModifiers.filter(modifier => modifier.phase === phase)\n    );\n  }, []);\n}\n","// @flow\n\nexport default function debounce<T>(fn: Function): () => Promise<T> {\n  let pending;\n  return () => {\n    if (!pending) {\n      pending = new Promise<T>(resolve => {\n        Promise.resolve().then(() => {\n          pending = undefined;\n          resolve(fn());\n        });\n      });\n    }\n\n    return pending;\n  };\n}\n","// @flow\nimport { type BasePlacement, type Placement, auto } from '../enums';\n\nexport default function getBasePlacement(\n  placement: Placement | typeof auto\n): BasePlacement {\n  return (placement.split('-')[0]: any);\n}\n","// @flow\nimport { isShadowRoot } from './instanceOf';\n\nexport default function contains(parent: Element, child: Element) {\n  const rootNode = child.getRootNode && child.getRootNode();\n\n  // First, attempt with faster native method\n  if (parent.contains(child)) {\n    return true;\n  }\n  // then fallback to custom implementation with Shadow DOM support\n  else if (rootNode && isShadowRoot(rootNode)) {\n    let next = child;\n    do {\n      if (next && parent.isSameNode(next)) {\n        return true;\n      }\n      // $FlowFixMe[prop-missing]: need a better way to handle this...\n      next = next.parentNode || next.host;\n    } while (next);\n  }\n\n  // Give up, the result is false\n  return false;\n}\n","// @flow\nimport type { Rect, ClientRectObject } from '../types';\n\nexport default function rectToClientRect(rect: Rect): ClientRectObject {\n  return {\n    ...rect,\n    left: rect.x,\n    top: rect.y,\n    right: rect.x + rect.width,\n    bottom: rect.y + rect.height,\n  };\n}\n","// @flow\nimport type { ClientRectObject } from '../types';\nimport type { Boundary, RootBoundary } from '../enums';\nimport { viewport } from '../enums';\nimport getViewportRect from './getViewportRect';\nimport getDocumentRect from './getDocumentRect';\nimport listScrollParents from './listScrollParents';\nimport getOffsetParent from './getOffsetParent';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport { isElement, isHTMLElement } from './instanceOf';\nimport getBoundingClientRect from './getBoundingClientRect';\nimport getParentNode from './getParentNode';\nimport contains from './contains';\nimport getNodeName from './getNodeName';\nimport rectToClientRect from '../utils/rectToClientRect';\nimport { max, min } from '../utils/math';\n\nfunction getInnerBoundingClientRect(element: Element) {\n  const rect = getBoundingClientRect(element);\n\n  rect.top = rect.top + element.clientTop;\n  rect.left = rect.left + element.clientLeft;\n  rect.bottom = rect.top + element.clientHeight;\n  rect.right = rect.left + element.clientWidth;\n  rect.width = element.clientWidth;\n  rect.height = element.clientHeight;\n  rect.x = rect.left;\n  rect.y = rect.top;\n\n  return rect;\n}\n\nfunction getClientRectFromMixedType(\n  element: Element,\n  clippingParent: Element | RootBoundary\n): ClientRectObject {\n  return clippingParent === viewport\n    ? rectToClientRect(getViewportRect(element))\n    : isElement(clippingParent)\n    ? getInnerBoundingClientRect(clippingParent)\n    : rectToClientRect(getDocumentRect(getDocumentElement(element)));\n}\n\n// A \"clipping parent\" is an overflowable container with the characteristic of\n// clipping (or hiding) overflowing elements with a position different from\n// `initial`\nfunction getClippingParents(element: Element): Array<Element> {\n  const clippingParents = listScrollParents(getParentNode(element));\n  const canEscapeClipping =\n    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;\n  const clipperElement =\n    canEscapeClipping && isHTMLElement(element)\n      ? getOffsetParent(element)\n      : element;\n\n  if (!isElement(clipperElement)) {\n    return [];\n  }\n\n  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414\n  return clippingParents.filter(\n    (clippingParent) =>\n      isElement(clippingParent) &&\n      contains(clippingParent, clipperElement) &&\n      getNodeName(clippingParent) !== 'body' &&\n      (canEscapeClipping\n        ? getComputedStyle(clippingParent).position !== 'static'\n        : true)\n  );\n}\n\n// Gets the maximum area that the element is visible in due to any number of\n// clipping parents\nexport default function getClippingRect(\n  element: Element,\n  boundary: Boundary,\n  rootBoundary: RootBoundary\n): ClientRectObject {\n  const mainClippingParents =\n    boundary === 'clippingParents'\n      ? getClippingParents(element)\n      : [].concat(boundary);\n  const clippingParents = [...mainClippingParents, rootBoundary];\n  const firstClippingParent = clippingParents[0];\n\n  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {\n    const rect = getClientRectFromMixedType(element, clippingParent);\n\n    accRect.top = max(rect.top, accRect.top);\n    accRect.right = min(rect.right, accRect.right);\n    accRect.bottom = min(rect.bottom, accRect.bottom);\n    accRect.left = max(rect.left, accRect.left);\n\n    return accRect;\n  }, getClientRectFromMixedType(element, firstClippingParent));\n\n  clippingRect.width = clippingRect.right - clippingRect.left;\n  clippingRect.height = clippingRect.bottom - clippingRect.top;\n  clippingRect.x = clippingRect.left;\n  clippingRect.y = clippingRect.top;\n\n  return clippingRect;\n}\n","// @flow\nexport const top: 'top' = 'top';\nexport const bottom: 'bottom' = 'bottom';\nexport const right: 'right' = 'right';\nexport const left: 'left' = 'left';\nexport const auto: 'auto' = 'auto';\nexport type BasePlacement =\n  | typeof top\n  | typeof bottom\n  | typeof right\n  | typeof left;\nexport const basePlacements: Array<BasePlacement> = [top, bottom, right, left];\n\nexport const start: 'start' = 'start';\nexport const end: 'end' = 'end';\nexport type Variation = typeof start | typeof end;\n\nexport const clippingParents: 'clippingParents' = 'clippingParents';\nexport const viewport: 'viewport' = 'viewport';\nexport type Boundary = Element | Array<Element> | typeof clippingParents;\nexport type RootBoundary = typeof viewport | 'document';\n\nexport const popper: 'popper' = 'popper';\nexport const reference: 'reference' = 'reference';\nexport type Context = typeof popper | typeof reference;\n\nexport type VariationPlacement =\n  | 'top-start'\n  | 'top-end'\n  | 'bottom-start'\n  | 'bottom-end'\n  | 'right-start'\n  | 'right-end'\n  | 'left-start'\n  | 'left-end';\nexport type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';\nexport type ComputedPlacement = VariationPlacement | BasePlacement;\nexport type Placement = AutoPlacement | BasePlacement | VariationPlacement;\n\nexport const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(\n  (acc: Array<VariationPlacement>, placement: BasePlacement) =>\n    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),\n  []\n);\nexport const placements: Array<Placement> = [...basePlacements, auto].reduce(\n  (\n    acc: Array<Placement>,\n    placement: BasePlacement | typeof auto\n  ): Array<Placement> =>\n    acc.concat([\n      placement,\n      (`${placement}-${start}`: any),\n      (`${placement}-${end}`: any),\n    ]),\n  []\n);\n\n// modifiers that need to read the DOM\nexport const beforeRead: 'beforeRead' = 'beforeRead';\nexport const read: 'read' = 'read';\nexport const afterRead: 'afterRead' = 'afterRead';\n// pure-logic modifiers\nexport const beforeMain: 'beforeMain' = 'beforeMain';\nexport const main: 'main' = 'main';\nexport const afterMain: 'afterMain' = 'afterMain';\n// modifier with the purpose to write to the DOM (or write into a framework state)\nexport const beforeWrite: 'beforeWrite' = 'beforeWrite';\nexport const write: 'write' = 'write';\nexport const afterWrite: 'afterWrite' = 'afterWrite';\nexport const modifierPhases: Array<ModifierPhases> = [\n  beforeRead,\n  read,\n  afterRead,\n  beforeMain,\n  main,\n  afterMain,\n  beforeWrite,\n  write,\n  afterWrite,\n];\n\nexport type ModifierPhases =\n  | typeof beforeRead\n  | typeof read\n  | typeof afterRead\n  | typeof beforeMain\n  | typeof main\n  | typeof afterMain\n  | typeof beforeWrite\n  | typeof write\n  | typeof afterWrite;\n","// @flow\nimport getWindow from './getWindow';\nimport getDocumentElement from './getDocumentElement';\nimport getWindowScrollBarX from './getWindowScrollBarX';\n\nexport default function getViewportRect(element: Element) {\n  const win = getWindow(element);\n  const html = getDocumentElement(element);\n  const visualViewport = win.visualViewport;\n\n  let width = html.clientWidth;\n  let height = html.clientHeight;\n  let x = 0;\n  let y = 0;\n\n  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper\n  // can be obscured underneath it.\n  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even\n  // if it isn't open, so if this isn't available, the popper will be detected\n  // to overflow the bottom of the screen too early.\n  if (visualViewport) {\n    width = visualViewport.width;\n    height = visualViewport.height;\n\n    // Uses Layout Viewport (like Chrome; Safari does not currently)\n    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding\n    // errors due to floating point numbers, so we need to check precision.\n    // Safari returns a number <= 0, usually < -1 when pinch-zoomed\n\n    // Feature detection fails in mobile emulation mode in Chrome.\n    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <\n    // 0.001\n    // Fallback here: \"Not Safari\" userAgent\n    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {\n      x = visualViewport.offsetLeft;\n      y = visualViewport.offsetTop;\n    }\n  }\n\n  return {\n    width,\n    height,\n    x: x + getWindowScrollBarX(element),\n    y,\n  };\n}\n","// @flow\nimport type { Rect } from '../types';\nimport getDocumentElement from './getDocumentElement';\nimport getComputedStyle from './getComputedStyle';\nimport getWindowScrollBarX from './getWindowScrollBarX';\nimport getWindowScroll from './getWindowScroll';\nimport { max } from '../utils/math';\n\n// Gets the entire size of the scrollable document area, even extending outside\n// of the `<html>` and `<body>` rect bounds if horizontally scrollable\nexport default function getDocumentRect(element: HTMLElement): Rect {\n  const html = getDocumentElement(element);\n  const winScroll = getWindowScroll(element);\n  const body = element.ownerDocument?.body;\n\n  const width = max(\n    html.scrollWidth,\n    html.clientWidth,\n    body ? body.scrollWidth : 0,\n    body ? body.clientWidth : 0\n  );\n  const height = max(\n    html.scrollHeight,\n    html.clientHeight,\n    body ? body.scrollHeight : 0,\n    body ? body.clientHeight : 0\n  );\n\n  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);\n  const y = -winScroll.scrollTop;\n\n  if (getComputedStyle(body || html).direction === 'rtl') {\n    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;\n  }\n\n  return { width, height, x, y };\n}\n","// @flow\nimport { type Variation, type Placement } from '../enums';\n\nexport default function getVariation(placement: Placement): ?Variation {\n  return (placement.split('-')[1]: any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nexport default function getMainAxisFromPlacement(\n  placement: Placement\n): 'x' | 'y' {\n  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';\n}\n","// @flow\nimport getBasePlacement from './getBasePlacement';\nimport getVariation from './getVariation';\nimport getMainAxisFromPlacement from './getMainAxisFromPlacement';\nimport type {\n  Rect,\n  PositioningStrategy,\n  Offsets,\n  ClientRectObject,\n} from '../types';\nimport { top, right, bottom, left, start, end, type Placement } from '../enums';\n\nexport default function computeOffsets({\n  reference,\n  element,\n  placement,\n}: {\n  reference: Rect | ClientRectObject,\n  element: Rect | ClientRectObject,\n  strategy: PositioningStrategy,\n  placement?: Placement,\n}): Offsets {\n  const basePlacement = placement ? getBasePlacement(placement) : null;\n  const variation = placement ? getVariation(placement) : null;\n  const commonX = reference.x + reference.width / 2 - element.width / 2;\n  const commonY = reference.y + reference.height / 2 - element.height / 2;\n\n  let offsets;\n  switch (basePlacement) {\n    case top:\n      offsets = {\n        x: commonX,\n        y: reference.y - element.height,\n      };\n      break;\n    case bottom:\n      offsets = {\n        x: commonX,\n        y: reference.y + reference.height,\n      };\n      break;\n    case right:\n      offsets = {\n        x: reference.x + reference.width,\n        y: commonY,\n      };\n      break;\n    case left:\n      offsets = {\n        x: reference.x - element.width,\n        y: commonY,\n      };\n      break;\n    default:\n      offsets = {\n        x: reference.x,\n        y: reference.y,\n      };\n  }\n\n  const mainAxis = basePlacement\n    ? getMainAxisFromPlacement(basePlacement)\n    : null;\n\n  if (mainAxis != null) {\n    const len = mainAxis === 'y' ? 'height' : 'width';\n\n    switch (variation) {\n      case start:\n        offsets[mainAxis] =\n          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);\n        break;\n      case end:\n        offsets[mainAxis] =\n          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);\n        break;\n      default:\n    }\n  }\n\n  return offsets;\n}\n","// @flow\nimport type { SideObject } from '../types';\nimport getFreshSideObject from './getFreshSideObject';\n\nexport default function mergePaddingObject(\n  paddingObject: $Shape<SideObject>\n): SideObject {\n  return {\n    ...getFreshSideObject(),\n    ...paddingObject,\n  };\n}\n","// @flow\nimport type { SideObject } from '../types';\n\nexport default function getFreshSideObject(): SideObject {\n  return {\n    top: 0,\n    right: 0,\n    bottom: 0,\n    left: 0,\n  };\n}\n","// @flow\n\nexport default function expandToHashMap<\n  T: number | string | boolean,\n  K: string\n>(value: T, keys: Array<K>): { [key: string]: T } {\n  return keys.reduce((hashMap, key) => {\n    hashMap[key] = value;\n    return hashMap;\n  }, {});\n}\n","// @flow\nimport type { State, SideObject, Padding } from '../types';\nimport type { Placement, Boundary, RootBoundary, Context } from '../enums';\nimport getClippingRect from '../dom-utils/getClippingRect';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getBoundingClientRect from '../dom-utils/getBoundingClientRect';\nimport computeOffsets from './computeOffsets';\nimport rectToClientRect from './rectToClientRect';\nimport {\n  clippingParents,\n  reference,\n  popper,\n  bottom,\n  top,\n  right,\n  basePlacements,\n  viewport,\n} from '../enums';\nimport { isElement } from '../dom-utils/instanceOf';\nimport mergePaddingObject from './mergePaddingObject';\nimport expandToHashMap from './expandToHashMap';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  placement: Placement,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  elementContext: Context,\n  altBoundary: boolean,\n  padding: Padding,\n};\n\nexport default function detectOverflow(\n  state: State,\n  options: $Shape<Options> = {}\n): SideObject {\n  const {\n    placement = state.placement,\n    boundary = clippingParents,\n    rootBoundary = viewport,\n    elementContext = popper,\n    altBoundary = false,\n    padding = 0,\n  } = options;\n\n  const paddingObject = mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n\n  const altContext = elementContext === popper ? reference : popper;\n\n  const popperRect = state.rects.popper;\n  const element = state.elements[altBoundary ? altContext : elementContext];\n\n  const clippingClientRect = getClippingRect(\n    isElement(element)\n      ? element\n      : element.contextElement || getDocumentElement(state.elements.popper),\n    boundary,\n    rootBoundary\n  );\n\n  const referenceClientRect = getBoundingClientRect(state.elements.reference);\n\n  const popperOffsets = computeOffsets({\n    reference: referenceClientRect,\n    element: popperRect,\n    strategy: 'absolute',\n    placement,\n  });\n\n  const popperClientRect = rectToClientRect({\n    ...popperRect,\n    ...popperOffsets,\n  });\n\n  const elementClientRect =\n    elementContext === popper ? popperClientRect : referenceClientRect;\n\n  // positive = overflowing the clipping rect\n  // 0 or negative = within the clipping rect\n  const overflowOffsets = {\n    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,\n    bottom:\n      elementClientRect.bottom -\n      clippingClientRect.bottom +\n      paddingObject.bottom,\n    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,\n    right:\n      elementClientRect.right - clippingClientRect.right + paddingObject.right,\n  };\n\n  const offsetData = state.modifiersData.offset;\n\n  // Offsets can be applied only to the popper element\n  if (elementContext === popper && offsetData) {\n    const offset = offsetData[placement];\n\n    Object.keys(overflowOffsets).forEach((key) => {\n      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;\n      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';\n      overflowOffsets[key] += offset[axis] * multiply;\n    });\n  }\n\n  return overflowOffsets;\n}\n","// @flow\nimport type {\n  State,\n  OptionsGeneric,\n  Modifier,\n  Instance,\n  VirtualElement,\n} from './types';\nimport getCompositeRect from './dom-utils/getCompositeRect';\nimport getLayoutRect from './dom-utils/getLayoutRect';\nimport listScrollParents from './dom-utils/listScrollParents';\nimport getOffsetParent from './dom-utils/getOffsetParent';\nimport getComputedStyle from './dom-utils/getComputedStyle';\nimport orderModifiers from './utils/orderModifiers';\nimport debounce from './utils/debounce';\nimport validateModifiers from './utils/validateModifiers';\nimport uniqueBy from './utils/uniqueBy';\nimport getBasePlacement from './utils/getBasePlacement';\nimport mergeByName from './utils/mergeByName';\nimport detectOverflow from './utils/detectOverflow';\nimport { isElement } from './dom-utils/instanceOf';\nimport { auto } from './enums';\n\nconst INVALID_ELEMENT_ERROR =\n  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';\nconst INFINITE_LOOP_ERROR =\n  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';\n\nconst DEFAULT_OPTIONS: OptionsGeneric<any> = {\n  placement: 'bottom',\n  modifiers: [],\n  strategy: 'absolute',\n};\n\ntype PopperGeneratorArgs = {\n  defaultModifiers?: Array<Modifier<any, any>>,\n  defaultOptions?: $Shape<OptionsGeneric<any>>,\n};\n\nfunction areValidElements(...args: Array<any>): boolean {\n  return !args.some(\n    (element) =>\n      !(element && typeof element.getBoundingClientRect === 'function')\n  );\n}\n\nexport function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {\n  const {\n    defaultModifiers = [],\n    defaultOptions = DEFAULT_OPTIONS,\n  } = generatorOptions;\n\n  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(\n    reference: Element | VirtualElement,\n    popper: HTMLElement,\n    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions\n  ): Instance {\n    let state: $Shape<State> = {\n      placement: 'bottom',\n      orderedModifiers: [],\n      options: { ...DEFAULT_OPTIONS, ...defaultOptions },\n      modifiersData: {},\n      elements: {\n        reference,\n        popper,\n      },\n      attributes: {},\n      styles: {},\n    };\n\n    let effectCleanupFns: Array<() => void> = [];\n    let isDestroyed = false;\n\n    const instance = {\n      state,\n      setOptions(setOptionsAction) {\n        const options =\n          typeof setOptionsAction === 'function'\n            ? setOptionsAction(state.options)\n            : setOptionsAction;\n\n        cleanupModifierEffects();\n\n        state.options = {\n          // $FlowFixMe[exponential-spread]\n          ...defaultOptions,\n          ...state.options,\n          ...options,\n        };\n\n        state.scrollParents = {\n          reference: isElement(reference)\n            ? listScrollParents(reference)\n            : reference.contextElement\n            ? listScrollParents(reference.contextElement)\n            : [],\n          popper: listScrollParents(popper),\n        };\n\n        // Orders the modifiers based on their dependencies and `phase`\n        // properties\n        const orderedModifiers = orderModifiers(\n          mergeByName([...defaultModifiers, ...state.options.modifiers])\n        );\n\n        // Strip out disabled modifiers\n        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);\n\n        // Validate the provided modifiers so that the consumer will get warned\n        // if one of the modifiers is invalid for any reason\n        if (__DEV__) {\n          const modifiers = uniqueBy(\n            [...orderedModifiers, ...state.options.modifiers],\n            ({ name }) => name\n          );\n\n          validateModifiers(modifiers);\n\n          if (getBasePlacement(state.options.placement) === auto) {\n            const flipModifier = state.orderedModifiers.find(\n              ({ name }) => name === 'flip'\n            );\n\n            if (!flipModifier) {\n              console.error(\n                [\n                  'Popper: \"auto\" placements require the \"flip\" modifier be',\n                  'present and enabled to work.',\n                ].join(' ')\n              );\n            }\n          }\n\n          const {\n            marginTop,\n            marginRight,\n            marginBottom,\n            marginLeft,\n          } = getComputedStyle(popper);\n\n          // We no longer take into account `margins` on the popper, and it can\n          // cause bugs with positioning, so we'll warn the consumer\n          if (\n            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>\n              parseFloat(margin)\n            )\n          ) {\n            console.warn(\n              [\n                'Popper: CSS \"margin\" styles cannot be used to apply padding',\n                'between the popper and its reference element or boundary.',\n                'To replicate margin, use the `offset` modifier, as well as',\n                'the `padding` option in the `preventOverflow` and `flip`',\n                'modifiers.',\n              ].join(' ')\n            );\n          }\n        }\n\n        runModifierEffects();\n\n        return instance.update();\n      },\n\n      // Sync update – it will always be executed, even if not necessary. This\n      // is useful for low frequency updates where sync behavior simplifies the\n      // logic.\n      // For high frequency updates (e.g. `resize` and `scroll` events), always\n      // prefer the async Popper#update method\n      forceUpdate() {\n        if (isDestroyed) {\n          return;\n        }\n\n        const { reference, popper } = state.elements;\n\n        // Don't proceed if `reference` or `popper` are not valid elements\n        // anymore\n        if (!areValidElements(reference, popper)) {\n          if (__DEV__) {\n            console.error(INVALID_ELEMENT_ERROR);\n          }\n          return;\n        }\n\n        // Store the reference and popper rects to be read by modifiers\n        state.rects = {\n          reference: getCompositeRect(\n            reference,\n            getOffsetParent(popper),\n            state.options.strategy === 'fixed'\n          ),\n          popper: getLayoutRect(popper),\n        };\n\n        // Modifiers have the ability to reset the current update cycle. The\n        // most common use case for this is the `flip` modifier changing the\n        // placement, which then needs to re-run all the modifiers, because the\n        // logic was previously ran for the previous placement and is therefore\n        // stale/incorrect\n        state.reset = false;\n\n        state.placement = state.options.placement;\n\n        // On each update cycle, the `modifiersData` property for each modifier\n        // is filled with the initial data specified by the modifier. This means\n        // it doesn't persist and is fresh on each update.\n        // To ensure persistent data, use `${name}#persistent`\n        state.orderedModifiers.forEach(\n          (modifier) =>\n            (state.modifiersData[modifier.name] = {\n              ...modifier.data,\n            })\n        );\n\n        let __debug_loops__ = 0;\n        for (let index = 0; index < state.orderedModifiers.length; index++) {\n          if (__DEV__) {\n            __debug_loops__ += 1;\n            if (__debug_loops__ > 100) {\n              console.error(INFINITE_LOOP_ERROR);\n              break;\n            }\n          }\n\n          if (state.reset === true) {\n            state.reset = false;\n            index = -1;\n            continue;\n          }\n\n          const { fn, options = {}, name } = state.orderedModifiers[index];\n\n          if (typeof fn === 'function') {\n            state = fn({ state, options, name, instance }) || state;\n          }\n        }\n      },\n\n      // Async and optimistically optimized update – it will not be executed if\n      // not necessary (debounced to run at most once-per-tick)\n      update: debounce<$Shape<State>>(\n        () =>\n          new Promise<$Shape<State>>((resolve) => {\n            instance.forceUpdate();\n            resolve(state);\n          })\n      ),\n\n      destroy() {\n        cleanupModifierEffects();\n        isDestroyed = true;\n      },\n    };\n\n    if (!areValidElements(reference, popper)) {\n      if (__DEV__) {\n        console.error(INVALID_ELEMENT_ERROR);\n      }\n      return instance;\n    }\n\n    instance.setOptions(options).then((state) => {\n      if (!isDestroyed && options.onFirstUpdate) {\n        options.onFirstUpdate(state);\n      }\n    });\n\n    // Modifiers have the ability to execute arbitrary code before the first\n    // update cycle runs. They will be executed in the same order as the update\n    // cycle. This is useful when a modifier adds some persistent data that\n    // other modifiers need to use, but the modifier is run after the dependent\n    // one.\n    function runModifierEffects() {\n      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {\n        if (typeof effect === 'function') {\n          const cleanupFn = effect({ state, name, instance, options });\n          const noopFn = () => {};\n          effectCleanupFns.push(cleanupFn || noopFn);\n        }\n      });\n    }\n\n    function cleanupModifierEffects() {\n      effectCleanupFns.forEach((fn) => fn());\n      effectCleanupFns = [];\n    }\n\n    return instance;\n  };\n}\n\nexport const createPopper = popperGenerator();\n\n// eslint-disable-next-line import/no-unused-modules\nexport { detectOverflow };\n","// @flow\nimport type { Modifier } from '../types';\n\nexport default function mergeByName(\n  modifiers: Array<$Shape<Modifier<any, any>>>\n): Array<$Shape<Modifier<any, any>>> {\n  const merged = modifiers.reduce((merged, current) => {\n    const existing = merged[current.name];\n    merged[current.name] = existing\n      ? {\n          ...existing,\n          ...current,\n          options: { ...existing.options, ...current.options },\n          data: { ...existing.data, ...current.data },\n        }\n      : current;\n    return merged;\n  }, {});\n\n  // IE11 does not support Object.values\n  return Object.keys(merged).map(key => merged[key]);\n}\n","// @flow\nimport type {\n  PositioningStrategy,\n  Offsets,\n  Modifier,\n  ModifierArguments,\n  Rect,\n  Window,\n} from '../types';\nimport {\n  type BasePlacement,\n  type Variation,\n  top,\n  left,\n  right,\n  bottom,\n  end,\n} from '../enums';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getWindow from '../dom-utils/getWindow';\nimport getDocumentElement from '../dom-utils/getDocumentElement';\nimport getComputedStyle from '../dom-utils/getComputedStyle';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getVariation from '../utils/getVariation';\nimport { round } from '../utils/math';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type RoundOffsets = (\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>\n) => Offsets;\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets?: boolean | RoundOffsets,\n};\n\nconst unsetSides = {\n  top: 'auto',\n  right: 'auto',\n  bottom: 'auto',\n  left: 'auto',\n};\n\n// Round the offsets to the nearest suitable subpixel based on the DPR.\n// Zooming can change the DPR, but it seems to report a value that will\n// cleanly divide the values into the appropriate subpixels.\nfunction roundOffsetsByDPR({ x, y }): Offsets {\n  const win: Window = window;\n  const dpr = win.devicePixelRatio || 1;\n\n  return {\n    x: round(x * dpr) / dpr || 0,\n    y: round(y * dpr) / dpr || 0,\n  };\n}\n\nexport function mapToStyles({\n  popper,\n  popperRect,\n  placement,\n  variation,\n  offsets,\n  position,\n  gpuAcceleration,\n  adaptive,\n  roundOffsets,\n  isFixed,\n}: {\n  popper: HTMLElement,\n  popperRect: Rect,\n  placement: BasePlacement,\n  variation: ?Variation,\n  offsets: $Shape<{ x: number, y: number, centerOffset: number }>,\n  position: PositioningStrategy,\n  gpuAcceleration: boolean,\n  adaptive: boolean,\n  roundOffsets: boolean | RoundOffsets,\n  isFixed: boolean,\n}) {\n  let { x = 0, y = 0 } =\n    roundOffsets === true\n      ? roundOffsetsByDPR(offsets)\n      : typeof roundOffsets === 'function'\n      ? roundOffsets(offsets)\n      : offsets;\n\n  const hasX = offsets.hasOwnProperty('x');\n  const hasY = offsets.hasOwnProperty('y');\n\n  let sideX: string = left;\n  let sideY: string = top;\n\n  const win: Window = window;\n\n  if (adaptive) {\n    let offsetParent = getOffsetParent(popper);\n    let heightProp = 'clientHeight';\n    let widthProp = 'clientWidth';\n\n    if (offsetParent === getWindow(popper)) {\n      offsetParent = getDocumentElement(popper);\n\n      if (\n        getComputedStyle(offsetParent).position !== 'static' &&\n        position === 'absolute'\n      ) {\n        heightProp = 'scrollHeight';\n        widthProp = 'scrollWidth';\n      }\n    }\n\n    // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it\n    offsetParent = (offsetParent: Element);\n\n    if (\n      placement === top ||\n      ((placement === left || placement === right) && variation === end)\n    ) {\n      sideY = bottom;\n      const offsetY =\n        isFixed && win.visualViewport\n          ? win.visualViewport.height\n          : // $FlowFixMe[prop-missing]\n            offsetParent[heightProp];\n      y -= offsetY - popperRect.height;\n      y *= gpuAcceleration ? 1 : -1;\n    }\n\n    if (\n      placement === left ||\n      ((placement === top || placement === bottom) && variation === end)\n    ) {\n      sideX = right;\n      const offsetX =\n        isFixed && win.visualViewport\n          ? win.visualViewport.width\n          : // $FlowFixMe[prop-missing]\n            offsetParent[widthProp];\n      x -= offsetX - popperRect.width;\n      x *= gpuAcceleration ? 1 : -1;\n    }\n  }\n\n  const commonStyles = {\n    position,\n    ...(adaptive && unsetSides),\n  };\n\n  if (gpuAcceleration) {\n    return {\n      ...commonStyles,\n      [sideY]: hasY ? '0' : '',\n      [sideX]: hasX ? '0' : '',\n      // Layer acceleration can disable subpixel rendering which causes slightly\n      // blurry text on low PPI displays, so we want to use 2D transforms\n      // instead\n      transform:\n        (win.devicePixelRatio || 1) <= 1\n          ? `translate(${x}px, ${y}px)`\n          : `translate3d(${x}px, ${y}px, 0)`,\n    };\n  }\n\n  return {\n    ...commonStyles,\n    [sideY]: hasY ? `${y}px` : '',\n    [sideX]: hasX ? `${x}px` : '',\n    transform: '',\n  };\n}\n\nfunction computeStyles({ state, options }: ModifierArguments<Options>) {\n  const {\n    gpuAcceleration = true,\n    adaptive = true,\n    // defaults to use builtin `roundOffsetsByDPR`\n    roundOffsets = true,\n  } = options;\n\n  if (__DEV__) {\n    const transitionProperty =\n      getComputedStyle(state.elements.popper).transitionProperty || '';\n\n    if (\n      adaptive &&\n      ['transform', 'top', 'right', 'bottom', 'left'].some(\n        (property) => transitionProperty.indexOf(property) >= 0\n      )\n    ) {\n      console.warn(\n        [\n          'Popper: Detected CSS transitions on at least one of the following',\n          'CSS properties: \"transform\", \"top\", \"right\", \"bottom\", \"left\".',\n          '\\n\\n',\n          'Disable the \"computeStyles\" modifier\\'s `adaptive` option to allow',\n          'for smooth transitions, or remove these properties from the CSS',\n          'transition declaration on the popper element if only transitioning',\n          'opacity or background-color for example.',\n          '\\n\\n',\n          'We recommend using the popper element as a wrapper around an inner',\n          'element that can have any CSS property transitioned for animations.',\n        ].join(' ')\n      );\n    }\n  }\n\n  const commonStyles = {\n    placement: getBasePlacement(state.placement),\n    variation: getVariation(state.placement),\n    popper: state.elements.popper,\n    popperRect: state.rects.popper,\n    gpuAcceleration,\n    isFixed: state.options.strategy === 'fixed',\n  };\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.styles.popper = {\n      ...state.styles.popper,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.popperOffsets,\n        position: state.options.strategy,\n        adaptive,\n        roundOffsets,\n      }),\n    };\n  }\n\n  if (state.modifiersData.arrow != null) {\n    state.styles.arrow = {\n      ...state.styles.arrow,\n      ...mapToStyles({\n        ...commonStyles,\n        offsets: state.modifiersData.arrow,\n        position: 'absolute',\n        adaptive: false,\n        roundOffsets,\n      }),\n    };\n  }\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-placement': state.placement,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ComputeStylesModifier = Modifier<'computeStyles', Options>;\nexport default ({\n  name: 'computeStyles',\n  enabled: true,\n  phase: 'beforeWrite',\n  fn: computeStyles,\n  data: {},\n}: ComputeStylesModifier);\n","// @flow\nimport type { Placement } from '../enums';\n\nconst hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n\nexport default function getOppositePlacement(placement: Placement): Placement {\n  return (placement.replace(\n    /left|right|bottom|top/g,\n    matched => hash[matched]\n  ): any);\n}\n","// @flow\nimport type { Placement } from '../enums';\n\nconst hash = { start: 'end', end: 'start' };\n\nexport default function getOppositeVariationPlacement(\n  placement: Placement\n): Placement {\n  return (placement.replace(/start|end/g, matched => hash[matched]): any);\n}\n","// @flow\nimport type {\n  ModifierArguments,\n  Modifier,\n  Rect,\n  SideObject,\n  Offsets,\n} from '../types';\nimport { top, bottom, left, right } from '../enums';\nimport detectOverflow from '../utils/detectOverflow';\n\nfunction getSideOffsets(\n  overflow: SideObject,\n  rect: Rect,\n  preventedOffsets: Offsets = { x: 0, y: 0 }\n): SideObject {\n  return {\n    top: overflow.top - rect.height - preventedOffsets.y,\n    right: overflow.right - rect.width + preventedOffsets.x,\n    bottom: overflow.bottom - rect.height + preventedOffsets.y,\n    left: overflow.left - rect.width - preventedOffsets.x,\n  };\n}\n\nfunction isAnySideFullyClipped(overflow: SideObject): boolean {\n  return [top, right, bottom, left].some((side) => overflow[side] >= 0);\n}\n\nfunction hide({ state, name }: ModifierArguments<{||}>) {\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n  const preventedOffsets = state.modifiersData.preventOverflow;\n\n  const referenceOverflow = detectOverflow(state, {\n    elementContext: 'reference',\n  });\n  const popperAltOverflow = detectOverflow(state, {\n    altBoundary: true,\n  });\n\n  const referenceClippingOffsets = getSideOffsets(\n    referenceOverflow,\n    referenceRect\n  );\n  const popperEscapeOffsets = getSideOffsets(\n    popperAltOverflow,\n    popperRect,\n    preventedOffsets\n  );\n\n  const isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);\n  const hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);\n\n  state.modifiersData[name] = {\n    referenceClippingOffsets,\n    popperEscapeOffsets,\n    isReferenceHidden,\n    hasPopperEscaped,\n  };\n\n  state.attributes.popper = {\n    ...state.attributes.popper,\n    'data-popper-reference-hidden': isReferenceHidden,\n    'data-popper-escaped': hasPopperEscaped,\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type HideModifier = Modifier<'hide', {||}>;\nexport default ({\n  name: 'hide',\n  enabled: true,\n  phase: 'main',\n  requiresIfExists: ['preventOverflow'],\n  fn: hide,\n}: HideModifier);\n","// @flow\nexport const max = Math.max;\nexport const min = Math.min;\nexport const round = Math.round;\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport getWindow from '../dom-utils/getWindow';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  scroll: boolean,\n  resize: boolean,\n};\n\nconst passive = { passive: true };\n\nfunction effect({ state, instance, options }: ModifierArguments<Options>) {\n  const { scroll = true, resize = true } = options;\n\n  const window = getWindow(state.elements.popper);\n  const scrollParents = [\n    ...state.scrollParents.reference,\n    ...state.scrollParents.popper,\n  ];\n\n  if (scroll) {\n    scrollParents.forEach(scrollParent => {\n      scrollParent.addEventListener('scroll', instance.update, passive);\n    });\n  }\n\n  if (resize) {\n    window.addEventListener('resize', instance.update, passive);\n  }\n\n  return () => {\n    if (scroll) {\n      scrollParents.forEach(scrollParent => {\n        scrollParent.removeEventListener('scroll', instance.update, passive);\n      });\n    }\n\n    if (resize) {\n      window.removeEventListener('resize', instance.update, passive);\n    }\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type EventListenersModifier = Modifier<'eventListeners', Options>;\nexport default ({\n  name: 'eventListeners',\n  enabled: true,\n  phase: 'write',\n  fn: () => {},\n  effect,\n  data: {},\n}: EventListenersModifier);\n","// @flow\nimport type { ModifierArguments, Modifier } from '../types';\nimport computeOffsets from '../utils/computeOffsets';\n\nfunction popperOffsets({ state, name }: ModifierArguments<{||}>) {\n  // Offsets are the actual position the popper needs to have to be\n  // properly positioned near its reference element\n  // This is the most basic placement, and will be adjusted by\n  // the modifiers in the next step\n  state.modifiersData[name] = computeOffsets({\n    reference: state.rects.reference,\n    element: state.rects.popper,\n    strategy: 'absolute',\n    placement: state.placement,\n  });\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PopperOffsetsModifier = Modifier<'popperOffsets', {||}>;\nexport default ({\n  name: 'popperOffsets',\n  enabled: true,\n  phase: 'read',\n  fn: popperOffsets,\n  data: {},\n}: PopperOffsetsModifier);\n","// @flow\nimport type { Modifier, ModifierArguments } from '../types';\nimport getNodeName from '../dom-utils/getNodeName';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// This modifier takes the styles prepared by the `computeStyles` modifier\n// and applies them to the HTMLElements such as popper and arrow\n\nfunction applyStyles({ state }: ModifierArguments<{||}>) {\n  Object.keys(state.elements).forEach((name) => {\n    const style = state.styles[name] || {};\n\n    const attributes = state.attributes[name] || {};\n    const element = state.elements[name];\n\n    // arrow is optional + virtual elements\n    if (!isHTMLElement(element) || !getNodeName(element)) {\n      return;\n    }\n\n    // Flow doesn't support to extend this property, but it's the most\n    // effective way to apply styles to an HTMLElement\n    // $FlowFixMe[cannot-write]\n    Object.assign(element.style, style);\n\n    Object.keys(attributes).forEach((name) => {\n      const value = attributes[name];\n      if (value === false) {\n        element.removeAttribute(name);\n      } else {\n        element.setAttribute(name, value === true ? '' : value);\n      }\n    });\n  });\n}\n\nfunction effect({ state }: ModifierArguments<{||}>) {\n  const initialStyles = {\n    popper: {\n      position: state.options.strategy,\n      left: '0',\n      top: '0',\n      margin: '0',\n    },\n    arrow: {\n      position: 'absolute',\n    },\n    reference: {},\n  };\n\n  Object.assign(state.elements.popper.style, initialStyles.popper);\n  state.styles = initialStyles;\n\n  if (state.elements.arrow) {\n    Object.assign(state.elements.arrow.style, initialStyles.arrow);\n  }\n\n  return () => {\n    Object.keys(state.elements).forEach((name) => {\n      const element = state.elements[name];\n      const attributes = state.attributes[name] || {};\n\n      const styleProperties = Object.keys(\n        state.styles.hasOwnProperty(name)\n          ? state.styles[name]\n          : initialStyles[name]\n      );\n\n      // Set all values to an empty string to unset them\n      const style = styleProperties.reduce((style, property) => {\n        style[property] = '';\n        return style;\n      }, {});\n\n      // arrow is optional + virtual elements\n      if (!isHTMLElement(element) || !getNodeName(element)) {\n        return;\n      }\n\n      Object.assign(element.style, style);\n\n      Object.keys(attributes).forEach((attribute) => {\n        element.removeAttribute(attribute);\n      });\n    });\n  };\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ApplyStylesModifier = Modifier<'applyStyles', {||}>;\nexport default ({\n  name: 'applyStyles',\n  enabled: true,\n  phase: 'write',\n  fn: applyStyles,\n  effect,\n  requires: ['computeStyles'],\n}: ApplyStylesModifier);\n","// @flow\nimport type { Placement } from '../enums';\nimport type { ModifierArguments, Modifier, Rect, Offsets } from '../types';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport { top, left, right, placements } from '../enums';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type OffsetsFunction = ({\n  popper: Rect,\n  reference: Rect,\n  placement: Placement,\n}) => [?number, ?number];\n\ntype Offset = OffsetsFunction | [?number, ?number];\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  offset: Offset,\n};\n\nexport function distanceAndSkiddingToXY(\n  placement: Placement,\n  rects: { popper: Rect, reference: Rect },\n  offset: Offset\n): Offsets {\n  const basePlacement = getBasePlacement(placement);\n  const invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;\n\n  let [skidding, distance] =\n    typeof offset === 'function'\n      ? offset({\n          ...rects,\n          placement,\n        })\n      : offset;\n\n  skidding = skidding || 0;\n  distance = (distance || 0) * invertDistance;\n\n  return [left, right].indexOf(basePlacement) >= 0\n    ? { x: distance, y: skidding }\n    : { x: skidding, y: distance };\n}\n\nfunction offset({ state, options, name }: ModifierArguments<Options>) {\n  const { offset = [0, 0] } = options;\n\n  const data = placements.reduce((acc, placement) => {\n    acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);\n    return acc;\n  }, {});\n\n  const { x, y } = data[state.placement];\n\n  if (state.modifiersData.popperOffsets != null) {\n    state.modifiersData.popperOffsets.x += x;\n    state.modifiersData.popperOffsets.y += y;\n  }\n\n  state.modifiersData[name] = data;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type OffsetModifier = Modifier<'offset', Options>;\nexport default ({\n  name: 'offset',\n  enabled: true,\n  phase: 'main',\n  requires: ['popperOffsets'],\n  fn: offset,\n}: OffsetModifier);\n","// @flow\nimport type { Placement, Boundary, RootBoundary } from '../enums';\nimport type { ModifierArguments, Modifier, Padding } from '../types';\nimport getOppositePlacement from '../utils/getOppositePlacement';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getOppositeVariationPlacement from '../utils/getOppositeVariationPlacement';\nimport detectOverflow from '../utils/detectOverflow';\nimport computeAutoPlacement from '../utils/computeAutoPlacement';\nimport { bottom, top, start, right, left, auto } from '../enums';\nimport getVariation from '../utils/getVariation';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  mainAxis: boolean,\n  altAxis: boolean,\n  fallbackPlacements: Array<Placement>,\n  padding: Padding,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  altBoundary: boolean,\n  flipVariations: boolean,\n  allowedAutoPlacements: Array<Placement>,\n};\n\nfunction getExpandedFallbackPlacements(placement: Placement): Array<Placement> {\n  if (getBasePlacement(placement) === auto) {\n    return [];\n  }\n\n  const oppositePlacement = getOppositePlacement(placement);\n\n  return [\n    getOppositeVariationPlacement(placement),\n    oppositePlacement,\n    getOppositeVariationPlacement(oppositePlacement),\n  ];\n}\n\nfunction flip({ state, options, name }: ModifierArguments<Options>) {\n  if (state.modifiersData[name]._skip) {\n    return;\n  }\n\n  const {\n    mainAxis: checkMainAxis = true,\n    altAxis: checkAltAxis = true,\n    fallbackPlacements: specifiedFallbackPlacements,\n    padding,\n    boundary,\n    rootBoundary,\n    altBoundary,\n    flipVariations = true,\n    allowedAutoPlacements,\n  } = options;\n\n  const preferredPlacement = state.options.placement;\n  const basePlacement = getBasePlacement(preferredPlacement);\n  const isBasePlacement = basePlacement === preferredPlacement;\n\n  const fallbackPlacements =\n    specifiedFallbackPlacements ||\n    (isBasePlacement || !flipVariations\n      ? [getOppositePlacement(preferredPlacement)]\n      : getExpandedFallbackPlacements(preferredPlacement));\n\n  const placements = [preferredPlacement, ...fallbackPlacements].reduce(\n    (acc, placement) => {\n      return acc.concat(\n        getBasePlacement(placement) === auto\n          ? computeAutoPlacement(state, {\n              placement,\n              boundary,\n              rootBoundary,\n              padding,\n              flipVariations,\n              allowedAutoPlacements,\n            })\n          : placement\n      );\n    },\n    []\n  );\n\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n\n  const checksMap = new Map();\n  let makeFallbackChecks = true;\n  let firstFittingPlacement = placements[0];\n\n  for (let i = 0; i < placements.length; i++) {\n    const placement = placements[i];\n    const basePlacement = getBasePlacement(placement);\n    const isStartVariation = getVariation(placement) === start;\n    const isVertical = [top, bottom].indexOf(basePlacement) >= 0;\n    const len = isVertical ? 'width' : 'height';\n\n    const overflow = detectOverflow(state, {\n      placement,\n      boundary,\n      rootBoundary,\n      altBoundary,\n      padding,\n    });\n\n    let mainVariationSide: any = isVertical\n      ? isStartVariation\n        ? right\n        : left\n      : isStartVariation\n      ? bottom\n      : top;\n\n    if (referenceRect[len] > popperRect[len]) {\n      mainVariationSide = getOppositePlacement(mainVariationSide);\n    }\n\n    const altVariationSide: any = getOppositePlacement(mainVariationSide);\n\n    const checks = [];\n\n    if (checkMainAxis) {\n      checks.push(overflow[basePlacement] <= 0);\n    }\n\n    if (checkAltAxis) {\n      checks.push(\n        overflow[mainVariationSide] <= 0,\n        overflow[altVariationSide] <= 0\n      );\n    }\n\n    if (checks.every((check) => check)) {\n      firstFittingPlacement = placement;\n      makeFallbackChecks = false;\n      break;\n    }\n\n    checksMap.set(placement, checks);\n  }\n\n  if (makeFallbackChecks) {\n    // `2` may be desired in some cases – research later\n    const numberOfChecks = flipVariations ? 3 : 1;\n\n    for (let i = numberOfChecks; i > 0; i--) {\n      const fittingPlacement = placements.find((placement) => {\n        const checks = checksMap.get(placement);\n        if (checks) {\n          return checks.slice(0, i).every((check) => check);\n        }\n      });\n\n      if (fittingPlacement) {\n        firstFittingPlacement = fittingPlacement;\n        break;\n      }\n    }\n  }\n\n  if (state.placement !== firstFittingPlacement) {\n    state.modifiersData[name]._skip = true;\n    state.placement = firstFittingPlacement;\n    state.reset = true;\n  }\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type FlipModifier = Modifier<'flip', Options>;\nexport default ({\n  name: 'flip',\n  enabled: true,\n  phase: 'main',\n  fn: flip,\n  requiresIfExists: ['offset'],\n  data: { _skip: false },\n}: FlipModifier);\n","// @flow\nimport type { State, Padding } from '../types';\nimport type {\n  Placement,\n  ComputedPlacement,\n  Boundary,\n  RootBoundary,\n} from '../enums';\nimport getVariation from './getVariation';\nimport {\n  variationPlacements,\n  basePlacements,\n  placements as allPlacements,\n} from '../enums';\nimport detectOverflow from './detectOverflow';\nimport getBasePlacement from './getBasePlacement';\n\ntype Options = {\n  placement: Placement,\n  padding: Padding,\n  boundary: Boundary,\n  rootBoundary: RootBoundary,\n  flipVariations: boolean,\n  allowedAutoPlacements?: Array<Placement>,\n};\n\ntype OverflowsMap = { [ComputedPlacement]: number };\n\nexport default function computeAutoPlacement(\n  state: $Shape<State>,\n  options: Options = {}\n): Array<ComputedPlacement> {\n  const {\n    placement,\n    boundary,\n    rootBoundary,\n    padding,\n    flipVariations,\n    allowedAutoPlacements = allPlacements,\n  } = options;\n\n  const variation = getVariation(placement);\n\n  const placements = variation\n    ? flipVariations\n      ? variationPlacements\n      : variationPlacements.filter(\n          (placement) => getVariation(placement) === variation\n        )\n    : basePlacements;\n\n  let allowedPlacements = placements.filter(\n    (placement) => allowedAutoPlacements.indexOf(placement) >= 0\n  );\n\n  if (allowedPlacements.length === 0) {\n    allowedPlacements = placements;\n\n    if (__DEV__) {\n      console.error(\n        [\n          'Popper: The `allowedAutoPlacements` option did not allow any',\n          'placements. Ensure the `placement` option matches the variation',\n          'of the allowed placements.',\n          'For example, \"auto\" cannot be used to allow \"bottom-start\".',\n          'Use \"auto-start\" instead.',\n        ].join(' ')\n      );\n    }\n  }\n\n  // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...\n  const overflows: OverflowsMap = allowedPlacements.reduce((acc, placement) => {\n    acc[placement] = detectOverflow(state, {\n      placement,\n      boundary,\n      rootBoundary,\n      padding,\n    })[getBasePlacement(placement)];\n\n    return acc;\n  }, {});\n\n  return Object.keys(overflows).sort((a, b) => overflows[a] - overflows[b]);\n}\n","// @flow\nimport { top, left, right, bottom, start } from '../enums';\nimport type { Placement, Boundary, RootBoundary } from '../enums';\nimport type { Rect, ModifierArguments, Modifier, Padding } from '../types';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';\nimport getAltAxis from '../utils/getAltAxis';\nimport { within, withinMaxClamp } from '../utils/within';\nimport getLayoutRect from '../dom-utils/getLayoutRect';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport detectOverflow from '../utils/detectOverflow';\nimport getVariation from '../utils/getVariation';\nimport getFreshSideObject from '../utils/getFreshSideObject';\nimport { min as mathMin, max as mathMax } from '../utils/math';\n\ntype TetherOffset =\n  | (({\n      popper: Rect,\n      reference: Rect,\n      placement: Placement,\n    }) => number | { mainAxis: number, altAxis: number })\n  | number\n  | { mainAxis: number, altAxis: number };\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  /* Prevents boundaries overflow on the main axis */\n  mainAxis: boolean,\n  /* Prevents boundaries overflow on the alternate axis */\n  altAxis: boolean,\n  /* The area to check the popper is overflowing in */\n  boundary: Boundary,\n  /* If the popper is not overflowing the main area, fallback to this one */\n  rootBoundary: RootBoundary,\n  /* Use the reference's \"clippingParents\" boundary context */\n  altBoundary: boolean,\n  /**\n   * Allows the popper to overflow from its boundaries to keep it near its\n   * reference element\n   */\n  tether: boolean,\n  /* Offsets when the `tether` option should activate */\n  tetherOffset: TetherOffset,\n  /* Sets a padding to the provided boundary */\n  padding: Padding,\n};\n\nfunction preventOverflow({ state, options, name }: ModifierArguments<Options>) {\n  const {\n    mainAxis: checkMainAxis = true,\n    altAxis: checkAltAxis = false,\n    boundary,\n    rootBoundary,\n    altBoundary,\n    padding,\n    tether = true,\n    tetherOffset = 0,\n  } = options;\n\n  const overflow = detectOverflow(state, {\n    boundary,\n    rootBoundary,\n    padding,\n    altBoundary,\n  });\n  const basePlacement = getBasePlacement(state.placement);\n  const variation = getVariation(state.placement);\n  const isBasePlacement = !variation;\n  const mainAxis = getMainAxisFromPlacement(basePlacement);\n  const altAxis = getAltAxis(mainAxis);\n  const popperOffsets = state.modifiersData.popperOffsets;\n  const referenceRect = state.rects.reference;\n  const popperRect = state.rects.popper;\n  const tetherOffsetValue =\n    typeof tetherOffset === 'function'\n      ? tetherOffset({\n          ...state.rects,\n          placement: state.placement,\n        })\n      : tetherOffset;\n  const normalizedTetherOffsetValue =\n    typeof tetherOffsetValue === 'number'\n      ? { mainAxis: tetherOffsetValue, altAxis: tetherOffsetValue }\n      : { mainAxis: 0, altAxis: 0, ...tetherOffsetValue };\n  const offsetModifierState = state.modifiersData.offset\n    ? state.modifiersData.offset[state.placement]\n    : null;\n\n  const data = { x: 0, y: 0 };\n\n  if (!popperOffsets) {\n    return;\n  }\n\n  if (checkMainAxis) {\n    const mainSide = mainAxis === 'y' ? top : left;\n    const altSide = mainAxis === 'y' ? bottom : right;\n    const len = mainAxis === 'y' ? 'height' : 'width';\n    const offset = popperOffsets[mainAxis];\n\n    const min = offset + overflow[mainSide];\n    const max = offset - overflow[altSide];\n\n    const additive = tether ? -popperRect[len] / 2 : 0;\n\n    const minLen = variation === start ? referenceRect[len] : popperRect[len];\n    const maxLen = variation === start ? -popperRect[len] : -referenceRect[len];\n\n    // We need to include the arrow in the calculation so the arrow doesn't go\n    // outside the reference bounds\n    const arrowElement = state.elements.arrow;\n    const arrowRect =\n      tether && arrowElement\n        ? getLayoutRect(arrowElement)\n        : { width: 0, height: 0 };\n    const arrowPaddingObject = state.modifiersData['arrow#persistent']\n      ? state.modifiersData['arrow#persistent'].padding\n      : getFreshSideObject();\n    const arrowPaddingMin = arrowPaddingObject[mainSide];\n    const arrowPaddingMax = arrowPaddingObject[altSide];\n\n    // If the reference length is smaller than the arrow length, we don't want\n    // to include its full size in the calculation. If the reference is small\n    // and near the edge of a boundary, the popper can overflow even if the\n    // reference is not overflowing as well (e.g. virtual elements with no\n    // width or height)\n    const arrowLen = within(0, referenceRect[len], arrowRect[len]);\n\n    const minOffset = isBasePlacement\n      ? referenceRect[len] / 2 -\n        additive -\n        arrowLen -\n        arrowPaddingMin -\n        normalizedTetherOffsetValue.mainAxis\n      : minLen -\n        arrowLen -\n        arrowPaddingMin -\n        normalizedTetherOffsetValue.mainAxis;\n    const maxOffset = isBasePlacement\n      ? -referenceRect[len] / 2 +\n        additive +\n        arrowLen +\n        arrowPaddingMax +\n        normalizedTetherOffsetValue.mainAxis\n      : maxLen +\n        arrowLen +\n        arrowPaddingMax +\n        normalizedTetherOffsetValue.mainAxis;\n\n    const arrowOffsetParent =\n      state.elements.arrow && getOffsetParent(state.elements.arrow);\n    const clientOffset = arrowOffsetParent\n      ? mainAxis === 'y'\n        ? arrowOffsetParent.clientTop || 0\n        : arrowOffsetParent.clientLeft || 0\n      : 0;\n\n    const offsetModifierValue = offsetModifierState?.[mainAxis] ?? 0;\n    const tetherMin = offset + minOffset - offsetModifierValue - clientOffset;\n    const tetherMax = offset + maxOffset - offsetModifierValue;\n\n    const preventedOffset = within(\n      tether ? mathMin(min, tetherMin) : min,\n      offset,\n      tether ? mathMax(max, tetherMax) : max\n    );\n\n    popperOffsets[mainAxis] = preventedOffset;\n    data[mainAxis] = preventedOffset - offset;\n  }\n\n  if (checkAltAxis) {\n    const mainSide = mainAxis === 'x' ? top : left;\n    const altSide = mainAxis === 'x' ? bottom : right;\n    const offset = popperOffsets[altAxis];\n\n    const len = altAxis === 'y' ? 'height' : 'width';\n\n    const min = offset + overflow[mainSide];\n    const max = offset - overflow[altSide];\n\n    const isOriginSide = [top, left].indexOf(basePlacement) !== -1;\n\n    const offsetModifierValue = offsetModifierState?.[altAxis] ?? 0;\n    const tetherMin = isOriginSide\n      ? min\n      : offset -\n        referenceRect[len] -\n        popperRect[len] -\n        offsetModifierValue +\n        normalizedTetherOffsetValue.altAxis;\n    const tetherMax = isOriginSide\n      ? offset +\n        referenceRect[len] +\n        popperRect[len] -\n        offsetModifierValue -\n        normalizedTetherOffsetValue.altAxis\n      : max;\n\n    const preventedOffset =\n      tether && isOriginSide\n        ? withinMaxClamp(tetherMin, offset, tetherMax)\n        : within(tether ? tetherMin : min, offset, tether ? tetherMax : max);\n\n    popperOffsets[altAxis] = preventedOffset;\n    data[altAxis] = preventedOffset - offset;\n  }\n\n  state.modifiersData[name] = data;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type PreventOverflowModifier = Modifier<'preventOverflow', Options>;\nexport default ({\n  name: 'preventOverflow',\n  enabled: true,\n  phase: 'main',\n  fn: preventOverflow,\n  requiresIfExists: ['offset'],\n}: PreventOverflowModifier);\n","// @flow\n\nexport default function getAltAxis(axis: 'x' | 'y'): 'x' | 'y' {\n  return axis === 'x' ? 'y' : 'x';\n}\n","// @flow\nimport { max as mathMax, min as mathMin } from './math';\n\nexport function within(min: number, value: number, max: number): number {\n  return mathMax(min, mathMin(value, max));\n}\n\nexport function withinMaxClamp(min: number, value: number, max: number) {\n  const v = within(min, value, max);\n  return v > max ? max : v;\n}\n","// @flow\nimport type { Modifier, ModifierArguments, Padding, Rect } from '../types';\nimport type { Placement } from '../enums';\nimport getBasePlacement from '../utils/getBasePlacement';\nimport getLayoutRect from '../dom-utils/getLayoutRect';\nimport contains from '../dom-utils/contains';\nimport getOffsetParent from '../dom-utils/getOffsetParent';\nimport getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';\nimport { within } from '../utils/within';\nimport mergePaddingObject from '../utils/mergePaddingObject';\nimport expandToHashMap from '../utils/expandToHashMap';\nimport { left, right, basePlacements, top, bottom } from '../enums';\nimport { isHTMLElement } from '../dom-utils/instanceOf';\n\n// eslint-disable-next-line import/no-unused-modules\nexport type Options = {\n  element: HTMLElement | string | null,\n  padding:\n    | Padding\n    | (({|\n        popper: Rect,\n        reference: Rect,\n        placement: Placement,\n      |}) => Padding),\n};\n\nconst toPaddingObject = (padding, state) => {\n  padding =\n    typeof padding === 'function'\n      ? padding({ ...state.rects, placement: state.placement })\n      : padding;\n\n  return mergePaddingObject(\n    typeof padding !== 'number'\n      ? padding\n      : expandToHashMap(padding, basePlacements)\n  );\n};\n\nfunction arrow({ state, name, options }: ModifierArguments<Options>) {\n  const arrowElement = state.elements.arrow;\n  const popperOffsets = state.modifiersData.popperOffsets;\n  const basePlacement = getBasePlacement(state.placement);\n  const axis = getMainAxisFromPlacement(basePlacement);\n  const isVertical = [left, right].indexOf(basePlacement) >= 0;\n  const len = isVertical ? 'height' : 'width';\n\n  if (!arrowElement || !popperOffsets) {\n    return;\n  }\n\n  const paddingObject = toPaddingObject(options.padding, state);\n  const arrowRect = getLayoutRect(arrowElement);\n  const minProp = axis === 'y' ? top : left;\n  const maxProp = axis === 'y' ? bottom : right;\n\n  const endDiff =\n    state.rects.reference[len] +\n    state.rects.reference[axis] -\n    popperOffsets[axis] -\n    state.rects.popper[len];\n  const startDiff = popperOffsets[axis] - state.rects.reference[axis];\n\n  const arrowOffsetParent = getOffsetParent(arrowElement);\n  const clientSize = arrowOffsetParent\n    ? axis === 'y'\n      ? arrowOffsetParent.clientHeight || 0\n      : arrowOffsetParent.clientWidth || 0\n    : 0;\n\n  const centerToReference = endDiff / 2 - startDiff / 2;\n\n  // Make sure the arrow doesn't overflow the popper if the center point is\n  // outside of the popper bounds\n  const min = paddingObject[minProp];\n  const max = clientSize - arrowRect[len] - paddingObject[maxProp];\n  const center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;\n  const offset = within(min, center, max);\n\n  // Prevents breaking syntax highlighting...\n  const axisProp: string = axis;\n  state.modifiersData[name] = {\n    [axisProp]: offset,\n    centerOffset: offset - center,\n  };\n}\n\nfunction effect({ state, options }: ModifierArguments<Options>) {\n  let { element: arrowElement = '[data-popper-arrow]' } = options;\n\n  if (arrowElement == null) {\n    return;\n  }\n\n  // CSS selector\n  if (typeof arrowElement === 'string') {\n    arrowElement = state.elements.popper.querySelector(arrowElement);\n\n    if (!arrowElement) {\n      return;\n    }\n  }\n\n  if (__DEV__) {\n    if (!isHTMLElement(arrowElement)) {\n      console.error(\n        [\n          'Popper: \"arrow\" element must be an HTMLElement (not an SVGElement).',\n          'To use an SVG arrow, wrap it in an HTMLElement that will be used as',\n          'the arrow.',\n        ].join(' ')\n      );\n    }\n  }\n\n  if (!contains(state.elements.popper, arrowElement)) {\n    if (__DEV__) {\n      console.error(\n        [\n          'Popper: \"arrow\" modifier\\'s `element` must be a child of the popper',\n          'element.',\n        ].join(' ')\n      );\n    }\n\n    return;\n  }\n\n  state.elements.arrow = arrowElement;\n}\n\n// eslint-disable-next-line import/no-unused-modules\nexport type ArrowModifier = Modifier<'arrow', Options>;\nexport default ({\n  name: 'arrow',\n  enabled: true,\n  phase: 'main',\n  fn: arrow,\n  effect,\n  requires: ['popperOffsets'],\n  requiresIfExists: ['preventOverflow'],\n}: ArrowModifier);\n","// @flow\nimport { popperGenerator, detectOverflow } from './createPopper';\n\nimport eventListeners from './modifiers/eventListeners';\nimport popperOffsets from './modifiers/popperOffsets';\nimport computeStyles from './modifiers/computeStyles';\nimport applyStyles from './modifiers/applyStyles';\n\nexport type * from 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\ No newline at end of file
diff --git a/popperjs/package/index.d.ts b/popperjs/package/index.d.ts
new file mode 100644
index 0000000..f41a696
--- /dev/null
+++ b/popperjs/package/index.d.ts
@@ -0,0 +1 @@
+export * from './lib';
diff --git a/popperjs/package/lib/createPopper.d.ts b/popperjs/package/lib/createPopper.d.ts
new file mode 100644
index 0000000..e1c0384
--- /dev/null
+++ b/popperjs/package/lib/createPopper.d.ts
@@ -0,0 +1,9 @@
+import type { OptionsGeneric, Modifier, Instance, VirtualElement } from "./types";
+import detectOverflow from "./utils/detectOverflow";
+declare type PopperGeneratorArgs = {
+    defaultModifiers?: Array<Modifier<any, any>>;
+    defaultOptions?: Partial<OptionsGeneric<any>>;
+};
+export declare function popperGenerator(generatorOptions?: PopperGeneratorArgs): <TModifier extends Partial<Modifier<any, any>>>(reference: Element | VirtualElement, popper: HTMLElement, options?: Partial<OptionsGeneric<TModifier>>) => Instance;
+export declare const createPopper: <TModifier extends Partial<Modifier<any, any>>>(reference: Element | VirtualElement, popper: HTMLElement, options?: Partial<OptionsGeneric<TModifier>>) => Instance;
+export { detectOverflow };
diff --git a/popperjs/package/lib/createPopper.js b/popperjs/package/lib/createPopper.js
new file mode 100644
index 0000000..88d6862
--- /dev/null
+++ b/popperjs/package/lib/createPopper.js
@@ -0,0 +1,259 @@
+import getCompositeRect from "./dom-utils/getCompositeRect.js";
+import getLayoutRect from "./dom-utils/getLayoutRect.js";
+import listScrollParents from "./dom-utils/listScrollParents.js";
+import getOffsetParent from "./dom-utils/getOffsetParent.js";
+import getComputedStyle from "./dom-utils/getComputedStyle.js";
+import orderModifiers from "./utils/orderModifiers.js";
+import debounce from "./utils/debounce.js";
+import validateModifiers from "./utils/validateModifiers.js";
+import uniqueBy from "./utils/uniqueBy.js";
+import getBasePlacement from "./utils/getBasePlacement.js";
+import mergeByName from "./utils/mergeByName.js";
+import detectOverflow from "./utils/detectOverflow.js";
+import { isElement } from "./dom-utils/instanceOf.js";
+import { auto } from "./enums.js";
+var INVALID_ELEMENT_ERROR = 'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+var INFINITE_LOOP_ERROR = 'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+var DEFAULT_OPTIONS = {
+  placement: 'bottom',
+  modifiers: [],
+  strategy: 'absolute'
+};
+
+function areValidElements() {
+  for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
+    args[_key] = arguments[_key];
+  }
+
+  return !args.some(function (element) {
+    return !(element && typeof element.getBoundingClientRect === 'function');
+  });
+}
+
+export function popperGenerator(generatorOptions) {
+  if (generatorOptions === void 0) {
+    generatorOptions = {};
+  }
+
+  var _generatorOptions = generatorOptions,
+      _generatorOptions$def = _generatorOptions.defaultModifiers,
+      defaultModifiers = _generatorOptions$def === void 0 ? [] : _generatorOptions$def,
+      _generatorOptions$def2 = _generatorOptions.defaultOptions,
+      defaultOptions = _generatorOptions$def2 === void 0 ? DEFAULT_OPTIONS : _generatorOptions$def2;
+  return function createPopper(reference, popper, options) {
+    if (options === void 0) {
+      options = defaultOptions;
+    }
+
+    var state = {
+      placement: 'bottom',
+      orderedModifiers: [],
+      options: Object.assign({}, DEFAULT_OPTIONS, defaultOptions),
+      modifiersData: {},
+      elements: {
+        reference: reference,
+        popper: popper
+      },
+      attributes: {},
+      styles: {}
+    };
+    var effectCleanupFns = [];
+    var isDestroyed = false;
+    var instance = {
+      state: state,
+      setOptions: function setOptions(setOptionsAction) {
+        var options = typeof setOptionsAction === 'function' ? setOptionsAction(state.options) : setOptionsAction;
+        cleanupModifierEffects();
+        state.options = Object.assign({}, defaultOptions, state.options, options);
+        state.scrollParents = {
+          reference: isElement(reference) ? listScrollParents(reference) : reference.contextElement ? listScrollParents(reference.contextElement) : [],
+          popper: listScrollParents(popper)
+        }; // Orders the modifiers based on their dependencies and `phase`
+        // properties
+
+        var orderedModifiers = orderModifiers(mergeByName([].concat(defaultModifiers, state.options.modifiers))); // Strip out disabled modifiers
+
+        state.orderedModifiers = orderedModifiers.filter(function (m) {
+          return m.enabled;
+        }); // Validate the provided modifiers so that the consumer will get warned
+        // if one of the modifiers is invalid for any reason
+
+        if (process.env.NODE_ENV !== "production") {
+          var modifiers = uniqueBy([].concat(orderedModifiers, state.options.modifiers), function (_ref) {
+            var name = _ref.name;
+            return name;
+          });
+          validateModifiers(modifiers);
+
+          if (getBasePlacement(state.options.placement) === auto) {
+            var flipModifier = state.orderedModifiers.find(function (_ref2) {
+              var name = _ref2.name;
+              return name === 'flip';
+            });
+
+            if (!flipModifier) {
+              console.error(['Popper: "auto" placements require the "flip" modifier be', 'present and enabled to work.'].join(' '));
+            }
+          }
+
+          var _getComputedStyle = getComputedStyle(popper),
+              marginTop = _getComputedStyle.marginTop,
+              marginRight = _getComputedStyle.marginRight,
+              marginBottom = _getComputedStyle.marginBottom,
+              marginLeft = _getComputedStyle.marginLeft; // We no longer take into account `margins` on the popper, and it can
+          // cause bugs with positioning, so we'll warn the consumer
+
+
+          if ([marginTop, marginRight, marginBottom, marginLeft].some(function (margin) {
+            return parseFloat(margin);
+          })) {
+            console.warn(['Popper: CSS "margin" styles cannot be used to apply padding', 'between the popper and its reference element or boundary.', 'To replicate margin, use the `offset` modifier, as well as', 'the `padding` option in the `preventOverflow` and `flip`', 'modifiers.'].join(' '));
+          }
+        }
+
+        runModifierEffects();
+        return instance.update();
+      },
+      // Sync update – it will always be executed, even if not necessary. This
+      // is useful for low frequency updates where sync behavior simplifies the
+      // logic.
+      // For high frequency updates (e.g. `resize` and `scroll` events), always
+      // prefer the async Popper#update method
+      forceUpdate: function forceUpdate() {
+        if (isDestroyed) {
+          return;
+        }
+
+        var _state$elements = state.elements,
+            reference = _state$elements.reference,
+            popper = _state$elements.popper; // Don't proceed if `reference` or `popper` are not valid elements
+        // anymore
+
+        if (!areValidElements(reference, popper)) {
+          if (process.env.NODE_ENV !== "production") {
+            console.error(INVALID_ELEMENT_ERROR);
+          }
+
+          return;
+        } // Store the reference and popper rects to be read by modifiers
+
+
+        state.rects = {
+          reference: getCompositeRect(reference, getOffsetParent(popper), state.options.strategy === 'fixed'),
+          popper: getLayoutRect(popper)
+        }; // Modifiers have the ability to reset the current update cycle. The
+        // most common use case for this is the `flip` modifier changing the
+        // placement, which then needs to re-run all the modifiers, because the
+        // logic was previously ran for the previous placement and is therefore
+        // stale/incorrect
+
+        state.reset = false;
+        state.placement = state.options.placement; // On each update cycle, the `modifiersData` property for each modifier
+        // is filled with the initial data specified by the modifier. This means
+        // it doesn't persist and is fresh on each update.
+        // To ensure persistent data, use `${name}#persistent`
+
+        state.orderedModifiers.forEach(function (modifier) {
+          return state.modifiersData[modifier.name] = Object.assign({}, modifier.data);
+        });
+        var __debug_loops__ = 0;
+
+        for (var index = 0; index < state.orderedModifiers.length; index++) {
+          if (process.env.NODE_ENV !== "production") {
+            __debug_loops__ += 1;
+
+            if (__debug_loops__ > 100) {
+              console.error(INFINITE_LOOP_ERROR);
+              break;
+            }
+          }
+
+          if (state.reset === true) {
+            state.reset = false;
+            index = -1;
+            continue;
+          }
+
+          var _state$orderedModifie = state.orderedModifiers[index],
+              fn = _state$orderedModifie.fn,
+              _state$orderedModifie2 = _state$orderedModifie.options,
+              _options = _state$orderedModifie2 === void 0 ? {} : _state$orderedModifie2,
+              name = _state$orderedModifie.name;
+
+          if (typeof fn === 'function') {
+            state = fn({
+              state: state,
+              options: _options,
+              name: name,
+              instance: instance
+            }) || state;
+          }
+        }
+      },
+      // Async and optimistically optimized update – it will not be executed if
+      // not necessary (debounced to run at most once-per-tick)
+      update: debounce(function () {
+        return new Promise(function (resolve) {
+          instance.forceUpdate();
+          resolve(state);
+        });
+      }),
+      destroy: function destroy() {
+        cleanupModifierEffects();
+        isDestroyed = true;
+      }
+    };
+
+    if (!areValidElements(reference, popper)) {
+      if (process.env.NODE_ENV !== "production") {
+        console.error(INVALID_ELEMENT_ERROR);
+      }
+
+      return instance;
+    }
+
+    instance.setOptions(options).then(function (state) {
+      if (!isDestroyed && options.onFirstUpdate) {
+        options.onFirstUpdate(state);
+      }
+    }); // Modifiers have the ability to execute arbitrary code before the first
+    // update cycle runs. They will be executed in the same order as the update
+    // cycle. This is useful when a modifier adds some persistent data that
+    // other modifiers need to use, but the modifier is run after the dependent
+    // one.
+
+    function runModifierEffects() {
+      state.orderedModifiers.forEach(function (_ref3) {
+        var name = _ref3.name,
+            _ref3$options = _ref3.options,
+            options = _ref3$options === void 0 ? {} : _ref3$options,
+            effect = _ref3.effect;
+
+        if (typeof effect === 'function') {
+          var cleanupFn = effect({
+            state: state,
+            name: name,
+            instance: instance,
+            options: options
+          });
+
+          var noopFn = function noopFn() {};
+
+          effectCleanupFns.push(cleanupFn || noopFn);
+        }
+      });
+    }
+
+    function cleanupModifierEffects() {
+      effectCleanupFns.forEach(function (fn) {
+        return fn();
+      });
+      effectCleanupFns = [];
+    }
+
+    return instance;
+  };
+}
+export var createPopper = /*#__PURE__*/popperGenerator(); // eslint-disable-next-line import/no-unused-modules
+
+export { detectOverflow };
\ No newline at end of file
diff --git a/popperjs/package/lib/createPopper.js.flow b/popperjs/package/lib/createPopper.js.flow
new file mode 100644
index 0000000..7f6be37
--- /dev/null
+++ b/popperjs/package/lib/createPopper.js.flow
@@ -0,0 +1,296 @@
+// @flow
+import type {
+  State,
+  OptionsGeneric,
+  Modifier,
+  Instance,
+  VirtualElement,
+} from './types';
+import getCompositeRect from './dom-utils/getCompositeRect';
+import getLayoutRect from './dom-utils/getLayoutRect';
+import listScrollParents from './dom-utils/listScrollParents';
+import getOffsetParent from './dom-utils/getOffsetParent';
+import getComputedStyle from './dom-utils/getComputedStyle';
+import orderModifiers from './utils/orderModifiers';
+import debounce from './utils/debounce';
+import validateModifiers from './utils/validateModifiers';
+import uniqueBy from './utils/uniqueBy';
+import getBasePlacement from './utils/getBasePlacement';
+import mergeByName from './utils/mergeByName';
+import detectOverflow from './utils/detectOverflow';
+import { isElement } from './dom-utils/instanceOf';
+import { auto } from './enums';
+
+const INVALID_ELEMENT_ERROR =
+  'Popper: Invalid reference or popper argument provided. They must be either a DOM element or virtual element.';
+const INFINITE_LOOP_ERROR =
+  'Popper: An infinite loop in the modifiers cycle has been detected! The cycle has been interrupted to prevent a browser crash.';
+
+const DEFAULT_OPTIONS: OptionsGeneric<any> = {
+  placement: 'bottom',
+  modifiers: [],
+  strategy: 'absolute',
+};
+
+type PopperGeneratorArgs = {
+  defaultModifiers?: Array<Modifier<any, any>>,
+  defaultOptions?: $Shape<OptionsGeneric<any>>,
+};
+
+function areValidElements(...args: Array<any>): boolean {
+  return !args.some(
+    (element) =>
+      !(element && typeof element.getBoundingClientRect === 'function')
+  );
+}
+
+export function popperGenerator(generatorOptions: PopperGeneratorArgs = {}) {
+  const {
+    defaultModifiers = [],
+    defaultOptions = DEFAULT_OPTIONS,
+  } = generatorOptions;
+
+  return function createPopper<TModifier: $Shape<Modifier<any, any>>>(
+    reference: Element | VirtualElement,
+    popper: HTMLElement,
+    options: $Shape<OptionsGeneric<TModifier>> = defaultOptions
+  ): Instance {
+    let state: $Shape<State> = {
+      placement: 'bottom',
+      orderedModifiers: [],
+      options: { ...DEFAULT_OPTIONS, ...defaultOptions },
+      modifiersData: {},
+      elements: {
+        reference,
+        popper,
+      },
+      attributes: {},
+      styles: {},
+    };
+
+    let effectCleanupFns: Array<() => void> = [];
+    let isDestroyed = false;
+
+    const instance = {
+      state,
+      setOptions(setOptionsAction) {
+        const options =
+          typeof setOptionsAction === 'function'
+            ? setOptionsAction(state.options)
+            : setOptionsAction;
+
+        cleanupModifierEffects();
+
+        state.options = {
+          // $FlowFixMe[exponential-spread]
+          ...defaultOptions,
+          ...state.options,
+          ...options,
+        };
+
+        state.scrollParents = {
+          reference: isElement(reference)
+            ? listScrollParents(reference)
+            : reference.contextElement
+            ? listScrollParents(reference.contextElement)
+            : [],
+          popper: listScrollParents(popper),
+        };
+
+        // Orders the modifiers based on their dependencies and `phase`
+        // properties
+        const orderedModifiers = orderModifiers(
+          mergeByName([...defaultModifiers, ...state.options.modifiers])
+        );
+
+        // Strip out disabled modifiers
+        state.orderedModifiers = orderedModifiers.filter((m) => m.enabled);
+
+        // Validate the provided modifiers so that the consumer will get warned
+        // if one of the modifiers is invalid for any reason
+        if (false) {
+          const modifiers = uniqueBy(
+            [...orderedModifiers, ...state.options.modifiers],
+            ({ name }) => name
+          );
+
+          validateModifiers(modifiers);
+
+          if (getBasePlacement(state.options.placement) === auto) {
+            const flipModifier = state.orderedModifiers.find(
+              ({ name }) => name === 'flip'
+            );
+
+            if (!flipModifier) {
+              console.error(
+                [
+                  'Popper: "auto" placements require the "flip" modifier be',
+                  'present and enabled to work.',
+                ].join(' ')
+              );
+            }
+          }
+
+          const {
+            marginTop,
+            marginRight,
+            marginBottom,
+            marginLeft,
+          } = getComputedStyle(popper);
+
+          // We no longer take into account `margins` on the popper, and it can
+          // cause bugs with positioning, so we'll warn the consumer
+          if (
+            [marginTop, marginRight, marginBottom, marginLeft].some((margin) =>
+              parseFloat(margin)
+            )
+          ) {
+            console.warn(
+              [
+                'Popper: CSS "margin" styles cannot be used to apply padding',
+                'between the popper and its reference element or boundary.',
+                'To replicate margin, use the `offset` modifier, as well as',
+                'the `padding` option in the `preventOverflow` and `flip`',
+                'modifiers.',
+              ].join(' ')
+            );
+          }
+        }
+
+        runModifierEffects();
+
+        return instance.update();
+      },
+
+      // Sync update – it will always be executed, even if not necessary. This
+      // is useful for low frequency updates where sync behavior simplifies the
+      // logic.
+      // For high frequency updates (e.g. `resize` and `scroll` events), always
+      // prefer the async Popper#update method
+      forceUpdate() {
+        if (isDestroyed) {
+          return;
+        }
+
+        const { reference, popper } = state.elements;
+
+        // Don't proceed if `reference` or `popper` are not valid elements
+        // anymore
+        if (!areValidElements(reference, popper)) {
+          if (false) {
+            console.error(INVALID_ELEMENT_ERROR);
+          }
+          return;
+        }
+
+        // Store the reference and popper rects to be read by modifiers
+        state.rects = {
+          reference: getCompositeRect(
+            reference,
+            getOffsetParent(popper),
+            state.options.strategy === 'fixed'
+          ),
+          popper: getLayoutRect(popper),
+        };
+
+        // Modifiers have the ability to reset the current update cycle. The
+        // most common use case for this is the `flip` modifier changing the
+        // placement, which then needs to re-run all the modifiers, because the
+        // logic was previously ran for the previous placement and is therefore
+        // stale/incorrect
+        state.reset = false;
+
+        state.placement = state.options.placement;
+
+        // On each update cycle, the `modifiersData` property for each modifier
+        // is filled with the initial data specified by the modifier. This means
+        // it doesn't persist and is fresh on each update.
+        // To ensure persistent data, use `${name}#persistent`
+        state.orderedModifiers.forEach(
+          (modifier) =>
+            (state.modifiersData[modifier.name] = {
+              ...modifier.data,
+            })
+        );
+
+        let __debug_loops__ = 0;
+        for (let index = 0; index < state.orderedModifiers.length; index++) {
+          if (false) {
+            __debug_loops__ += 1;
+            if (__debug_loops__ > 100) {
+              console.error(INFINITE_LOOP_ERROR);
+              break;
+            }
+          }
+
+          if (state.reset === true) {
+            state.reset = false;
+            index = -1;
+            continue;
+          }
+
+          const { fn, options = {}, name } = state.orderedModifiers[index];
+
+          if (typeof fn === 'function') {
+            state = fn({ state, options, name, instance }) || state;
+          }
+        }
+      },
+
+      // Async and optimistically optimized update – it will not be executed if
+      // not necessary (debounced to run at most once-per-tick)
+      update: debounce<$Shape<State>>(
+        () =>
+          new Promise<$Shape<State>>((resolve) => {
+            instance.forceUpdate();
+            resolve(state);
+          })
+      ),
+
+      destroy() {
+        cleanupModifierEffects();
+        isDestroyed = true;
+      },
+    };
+
+    if (!areValidElements(reference, popper)) {
+      if (false) {
+        console.error(INVALID_ELEMENT_ERROR);
+      }
+      return instance;
+    }
+
+    instance.setOptions(options).then((state) => {
+      if (!isDestroyed && options.onFirstUpdate) {
+        options.onFirstUpdate(state);
+      }
+    });
+
+    // Modifiers have the ability to execute arbitrary code before the first
+    // update cycle runs. They will be executed in the same order as the update
+    // cycle. This is useful when a modifier adds some persistent data that
+    // other modifiers need to use, but the modifier is run after the dependent
+    // one.
+    function runModifierEffects() {
+      state.orderedModifiers.forEach(({ name, options = {}, effect }) => {
+        if (typeof effect === 'function') {
+          const cleanupFn = effect({ state, name, instance, options });
+          const noopFn = () => {};
+          effectCleanupFns.push(cleanupFn || noopFn);
+        }
+      });
+    }
+
+    function cleanupModifierEffects() {
+      effectCleanupFns.forEach((fn) => fn());
+      effectCleanupFns = [];
+    }
+
+    return instance;
+  };
+}
+
+export const createPopper = popperGenerator();
+
+// eslint-disable-next-line import/no-unused-modules
+export { detectOverflow };
diff --git a/popperjs/package/lib/dom-utils/contains.d.ts b/popperjs/package/lib/dom-utils/contains.d.ts
new file mode 100644
index 0000000..c6347d8
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/contains.d.ts
@@ -0,0 +1 @@
+export default function contains(parent: Element, child: Element): boolean;
diff --git a/popperjs/package/lib/dom-utils/contains.js b/popperjs/package/lib/dom-utils/contains.js
new file mode 100644
index 0000000..2a53772
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/contains.js
@@ -0,0 +1,23 @@
+import { isShadowRoot } from "./instanceOf.js";
+export default function contains(parent, child) {
+  var rootNode = child.getRootNode && child.getRootNode(); // First, attempt with faster native method
+
+  if (parent.contains(child)) {
+    return true;
+  } // then fallback to custom implementation with Shadow DOM support
+  else if (rootNode && isShadowRoot(rootNode)) {
+      var next = child;
+
+      do {
+        if (next && parent.isSameNode(next)) {
+          return true;
+        } // $FlowFixMe[prop-missing]: need a better way to handle this...
+
+
+        next = next.parentNode || next.host;
+      } while (next);
+    } // Give up, the result is false
+
+
+  return false;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/contains.js.flow b/popperjs/package/lib/dom-utils/contains.js.flow
new file mode 100644
index 0000000..3164792
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/contains.js.flow
@@ -0,0 +1,25 @@
+// @flow
+import { isShadowRoot } from './instanceOf';
+
+export default function contains(parent: Element, child: Element) {
+  const rootNode = child.getRootNode && child.getRootNode();
+
+  // First, attempt with faster native method
+  if (parent.contains(child)) {
+    return true;
+  }
+  // then fallback to custom implementation with Shadow DOM support
+  else if (rootNode && isShadowRoot(rootNode)) {
+    let next = child;
+    do {
+      if (next && parent.isSameNode(next)) {
+        return true;
+      }
+      // $FlowFixMe[prop-missing]: need a better way to handle this...
+      next = next.parentNode || next.host;
+    } while (next);
+  }
+
+  // Give up, the result is false
+  return false;
+}
diff --git a/popperjs/package/lib/dom-utils/getBoundingClientRect.d.ts b/popperjs/package/lib/dom-utils/getBoundingClientRect.d.ts
new file mode 100644
index 0000000..82980a1
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getBoundingClientRect.d.ts
@@ -0,0 +1,2 @@
+import type { ClientRectObject, VirtualElement } from "../types";
+export default function getBoundingClientRect(element: Element | VirtualElement, includeScale?: boolean): ClientRectObject;
diff --git a/popperjs/package/lib/dom-utils/getBoundingClientRect.js b/popperjs/package/lib/dom-utils/getBoundingClientRect.js
new file mode 100644
index 0000000..22cc605
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getBoundingClientRect.js
@@ -0,0 +1,36 @@
+import { isHTMLElement } from "./instanceOf.js";
+import { round } from "../utils/math.js";
+export default function getBoundingClientRect(element, includeScale) {
+  if (includeScale === void 0) {
+    includeScale = false;
+  }
+
+  var rect = element.getBoundingClientRect();
+  var scaleX = 1;
+  var scaleY = 1;
+
+  if (isHTMLElement(element) && includeScale) {
+    var offsetHeight = element.offsetHeight;
+    var offsetWidth = element.offsetWidth; // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+    // Fallback to 1 in case both values are `0`
+
+    if (offsetWidth > 0) {
+      scaleX = round(rect.width) / offsetWidth || 1;
+    }
+
+    if (offsetHeight > 0) {
+      scaleY = round(rect.height) / offsetHeight || 1;
+    }
+  }
+
+  return {
+    width: rect.width / scaleX,
+    height: rect.height / scaleY,
+    top: rect.top / scaleY,
+    right: rect.right / scaleX,
+    bottom: rect.bottom / scaleY,
+    left: rect.left / scaleX,
+    x: rect.left / scaleX,
+    y: rect.top / scaleY
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getBoundingClientRect.js.flow b/popperjs/package/lib/dom-utils/getBoundingClientRect.js.flow
new file mode 100644
index 0000000..1cae0f2
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getBoundingClientRect.js.flow
@@ -0,0 +1,38 @@
+// @flow
+import type { ClientRectObject, VirtualElement } from '../types';
+import { isHTMLElement } from './instanceOf';
+import { round } from '../utils/math';
+
+export default function getBoundingClientRect(
+  element: Element | VirtualElement,
+  includeScale: boolean = false
+): ClientRectObject {
+  const rect = element.getBoundingClientRect();
+  let scaleX = 1;
+  let scaleY = 1;
+
+  if (isHTMLElement(element) && includeScale) {
+    const offsetHeight = element.offsetHeight;
+    const offsetWidth = element.offsetWidth;
+
+    // Do not attempt to divide by 0, otherwise we get `Infinity` as scale
+    // Fallback to 1 in case both values are `0`
+    if (offsetWidth > 0) {
+      scaleX = round(rect.width) / offsetWidth || 1;
+    }
+    if (offsetHeight > 0) {
+      scaleY = round(rect.height) / offsetHeight || 1;
+    }
+  }
+
+  return {
+    width: rect.width / scaleX,
+    height: rect.height / scaleY,
+    top: rect.top / scaleY,
+    right: rect.right / scaleX,
+    bottom: rect.bottom / scaleY,
+    left: rect.left / scaleX,
+    x: rect.left / scaleX,
+    y: rect.top / scaleY,
+  };
+}
diff --git a/popperjs/package/lib/dom-utils/getClippingRect.d.ts b/popperjs/package/lib/dom-utils/getClippingRect.d.ts
new file mode 100644
index 0000000..23eca10
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getClippingRect.d.ts
@@ -0,0 +1,3 @@
+import type { ClientRectObject } from "../types";
+import type { Boundary, RootBoundary } from "../enums";
+export default function getClippingRect(element: Element, boundary: Boundary, rootBoundary: RootBoundary): ClientRectObject;
diff --git a/popperjs/package/lib/dom-utils/getClippingRect.js b/popperjs/package/lib/dom-utils/getClippingRect.js
new file mode 100644
index 0000000..696c309
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getClippingRect.js
@@ -0,0 +1,70 @@
+import { viewport } from "../enums.js";
+import getViewportRect from "./getViewportRect.js";
+import getDocumentRect from "./getDocumentRect.js";
+import listScrollParents from "./listScrollParents.js";
+import getOffsetParent from "./getOffsetParent.js";
+import getDocumentElement from "./getDocumentElement.js";
+import getComputedStyle from "./getComputedStyle.js";
+import { isElement, isHTMLElement } from "./instanceOf.js";
+import getBoundingClientRect from "./getBoundingClientRect.js";
+import getParentNode from "./getParentNode.js";
+import contains from "./contains.js";
+import getNodeName from "./getNodeName.js";
+import rectToClientRect from "../utils/rectToClientRect.js";
+import { max, min } from "../utils/math.js";
+
+function getInnerBoundingClientRect(element) {
+  var rect = getBoundingClientRect(element);
+  rect.top = rect.top + element.clientTop;
+  rect.left = rect.left + element.clientLeft;
+  rect.bottom = rect.top + element.clientHeight;
+  rect.right = rect.left + element.clientWidth;
+  rect.width = element.clientWidth;
+  rect.height = element.clientHeight;
+  rect.x = rect.left;
+  rect.y = rect.top;
+  return rect;
+}
+
+function getClientRectFromMixedType(element, clippingParent) {
+  return clippingParent === viewport ? rectToClientRect(getViewportRect(element)) : isElement(clippingParent) ? getInnerBoundingClientRect(clippingParent) : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+} // A "clipping parent" is an overflowable container with the characteristic of
+// clipping (or hiding) overflowing elements with a position different from
+// `initial`
+
+
+function getClippingParents(element) {
+  var clippingParents = listScrollParents(getParentNode(element));
+  var canEscapeClipping = ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+  var clipperElement = canEscapeClipping && isHTMLElement(element) ? getOffsetParent(element) : element;
+
+  if (!isElement(clipperElement)) {
+    return [];
+  } // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+
+
+  return clippingParents.filter(function (clippingParent) {
+    return isElement(clippingParent) && contains(clippingParent, clipperElement) && getNodeName(clippingParent) !== 'body' && (canEscapeClipping ? getComputedStyle(clippingParent).position !== 'static' : true);
+  });
+} // Gets the maximum area that the element is visible in due to any number of
+// clipping parents
+
+
+export default function getClippingRect(element, boundary, rootBoundary) {
+  var mainClippingParents = boundary === 'clippingParents' ? getClippingParents(element) : [].concat(boundary);
+  var clippingParents = [].concat(mainClippingParents, [rootBoundary]);
+  var firstClippingParent = clippingParents[0];
+  var clippingRect = clippingParents.reduce(function (accRect, clippingParent) {
+    var rect = getClientRectFromMixedType(element, clippingParent);
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+    return accRect;
+  }, getClientRectFromMixedType(element, firstClippingParent));
+  clippingRect.width = clippingRect.right - clippingRect.left;
+  clippingRect.height = clippingRect.bottom - clippingRect.top;
+  clippingRect.x = clippingRect.left;
+  clippingRect.y = clippingRect.top;
+  return clippingRect;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getClippingRect.js.flow b/popperjs/package/lib/dom-utils/getClippingRect.js.flow
new file mode 100644
index 0000000..7efd8d0
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getClippingRect.js.flow
@@ -0,0 +1,104 @@
+// @flow
+import type { ClientRectObject } from '../types';
+import type { Boundary, RootBoundary } from '../enums';
+import { viewport } from '../enums';
+import getViewportRect from './getViewportRect';
+import getDocumentRect from './getDocumentRect';
+import listScrollParents from './listScrollParents';
+import getOffsetParent from './getOffsetParent';
+import getDocumentElement from './getDocumentElement';
+import getComputedStyle from './getComputedStyle';
+import { isElement, isHTMLElement } from './instanceOf';
+import getBoundingClientRect from './getBoundingClientRect';
+import getParentNode from './getParentNode';
+import contains from './contains';
+import getNodeName from './getNodeName';
+import rectToClientRect from '../utils/rectToClientRect';
+import { max, min } from '../utils/math';
+
+function getInnerBoundingClientRect(element: Element) {
+  const rect = getBoundingClientRect(element);
+
+  rect.top = rect.top + element.clientTop;
+  rect.left = rect.left + element.clientLeft;
+  rect.bottom = rect.top + element.clientHeight;
+  rect.right = rect.left + element.clientWidth;
+  rect.width = element.clientWidth;
+  rect.height = element.clientHeight;
+  rect.x = rect.left;
+  rect.y = rect.top;
+
+  return rect;
+}
+
+function getClientRectFromMixedType(
+  element: Element,
+  clippingParent: Element | RootBoundary
+): ClientRectObject {
+  return clippingParent === viewport
+    ? rectToClientRect(getViewportRect(element))
+    : isElement(clippingParent)
+    ? getInnerBoundingClientRect(clippingParent)
+    : rectToClientRect(getDocumentRect(getDocumentElement(element)));
+}
+
+// A "clipping parent" is an overflowable container with the characteristic of
+// clipping (or hiding) overflowing elements with a position different from
+// `initial`
+function getClippingParents(element: Element): Array<Element> {
+  const clippingParents = listScrollParents(getParentNode(element));
+  const canEscapeClipping =
+    ['absolute', 'fixed'].indexOf(getComputedStyle(element).position) >= 0;
+  const clipperElement =
+    canEscapeClipping && isHTMLElement(element)
+      ? getOffsetParent(element)
+      : element;
+
+  if (!isElement(clipperElement)) {
+    return [];
+  }
+
+  // $FlowFixMe[incompatible-return]: https://github.com/facebook/flow/issues/1414
+  return clippingParents.filter(
+    (clippingParent) =>
+      isElement(clippingParent) &&
+      contains(clippingParent, clipperElement) &&
+      getNodeName(clippingParent) !== 'body' &&
+      (canEscapeClipping
+        ? getComputedStyle(clippingParent).position !== 'static'
+        : true)
+  );
+}
+
+// Gets the maximum area that the element is visible in due to any number of
+// clipping parents
+export default function getClippingRect(
+  element: Element,
+  boundary: Boundary,
+  rootBoundary: RootBoundary
+): ClientRectObject {
+  const mainClippingParents =
+    boundary === 'clippingParents'
+      ? getClippingParents(element)
+      : [].concat(boundary);
+  const clippingParents = [...mainClippingParents, rootBoundary];
+  const firstClippingParent = clippingParents[0];
+
+  const clippingRect = clippingParents.reduce((accRect, clippingParent) => {
+    const rect = getClientRectFromMixedType(element, clippingParent);
+
+    accRect.top = max(rect.top, accRect.top);
+    accRect.right = min(rect.right, accRect.right);
+    accRect.bottom = min(rect.bottom, accRect.bottom);
+    accRect.left = max(rect.left, accRect.left);
+
+    return accRect;
+  }, getClientRectFromMixedType(element, firstClippingParent));
+
+  clippingRect.width = clippingRect.right - clippingRect.left;
+  clippingRect.height = clippingRect.bottom - clippingRect.top;
+  clippingRect.x = clippingRect.left;
+  clippingRect.y = clippingRect.top;
+
+  return clippingRect;
+}
diff --git a/popperjs/package/lib/dom-utils/getCompositeRect.d.ts b/popperjs/package/lib/dom-utils/getCompositeRect.d.ts
new file mode 100644
index 0000000..19f7aa4
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getCompositeRect.d.ts
@@ -0,0 +1,2 @@
+import type { Rect, VirtualElement, Window } from "../types";
+export default function getCompositeRect(elementOrVirtualElement: Element | VirtualElement, offsetParent: Element | Window, isFixed?: boolean): Rect;
diff --git a/popperjs/package/lib/dom-utils/getCompositeRect.js b/popperjs/package/lib/dom-utils/getCompositeRect.js
new file mode 100644
index 0000000..eaa5f84
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getCompositeRect.js
@@ -0,0 +1,58 @@
+import getBoundingClientRect from "./getBoundingClientRect.js";
+import getNodeScroll from "./getNodeScroll.js";
+import getNodeName from "./getNodeName.js";
+import { isHTMLElement } from "./instanceOf.js";
+import getWindowScrollBarX from "./getWindowScrollBarX.js";
+import getDocumentElement from "./getDocumentElement.js";
+import isScrollParent from "./isScrollParent.js";
+import { round } from "../utils/math.js";
+
+function isElementScaled(element) {
+  var rect = element.getBoundingClientRect();
+  var scaleX = round(rect.width) / element.offsetWidth || 1;
+  var scaleY = round(rect.height) / element.offsetHeight || 1;
+  return scaleX !== 1 || scaleY !== 1;
+} // Returns the composite rect of an element relative to its offsetParent.
+// Composite means it takes into account transforms as well as layout.
+
+
+export default function getCompositeRect(elementOrVirtualElement, offsetParent, isFixed) {
+  if (isFixed === void 0) {
+    isFixed = false;
+  }
+
+  var isOffsetParentAnElement = isHTMLElement(offsetParent);
+  var offsetParentIsScaled = isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+  var documentElement = getDocumentElement(offsetParent);
+  var rect = getBoundingClientRect(elementOrVirtualElement, offsetParentIsScaled);
+  var scroll = {
+    scrollLeft: 0,
+    scrollTop: 0
+  };
+  var offsets = {
+    x: 0,
+    y: 0
+  };
+
+  if (isOffsetParentAnElement || !isOffsetParentAnElement && !isFixed) {
+    if (getNodeName(offsetParent) !== 'body' || // https://github.com/popperjs/popper-core/issues/1078
+    isScrollParent(documentElement)) {
+      scroll = getNodeScroll(offsetParent);
+    }
+
+    if (isHTMLElement(offsetParent)) {
+      offsets = getBoundingClientRect(offsetParent, true);
+      offsets.x += offsetParent.clientLeft;
+      offsets.y += offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getCompositeRect.js.flow b/popperjs/package/lib/dom-utils/getCompositeRect.js.flow
new file mode 100644
index 0000000..8092dc8
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getCompositeRect.js.flow
@@ -0,0 +1,63 @@
+// @flow
+import type { Rect, VirtualElement, Window } from '../types';
+import getBoundingClientRect from './getBoundingClientRect';
+import getNodeScroll from './getNodeScroll';
+import getNodeName from './getNodeName';
+import { isHTMLElement } from './instanceOf';
+import getWindowScrollBarX from './getWindowScrollBarX';
+import getDocumentElement from './getDocumentElement';
+import isScrollParent from './isScrollParent';
+import { round } from '../utils/math';
+
+function isElementScaled(element: HTMLElement) {
+  const rect = element.getBoundingClientRect();
+  const scaleX = round(rect.width) / element.offsetWidth || 1;
+  const scaleY = round(rect.height) / element.offsetHeight || 1;
+
+  return scaleX !== 1 || scaleY !== 1;
+}
+
+// Returns the composite rect of an element relative to its offsetParent.
+// Composite means it takes into account transforms as well as layout.
+export default function getCompositeRect(
+  elementOrVirtualElement: Element | VirtualElement,
+  offsetParent: Element | Window,
+  isFixed: boolean = false
+): Rect {
+  const isOffsetParentAnElement = isHTMLElement(offsetParent);
+  const offsetParentIsScaled =
+    isHTMLElement(offsetParent) && isElementScaled(offsetParent);
+  const documentElement = getDocumentElement(offsetParent);
+  const rect = getBoundingClientRect(
+    elementOrVirtualElement,
+    offsetParentIsScaled
+  );
+
+  let scroll = { scrollLeft: 0, scrollTop: 0 };
+  let offsets = { x: 0, y: 0 };
+
+  if (isOffsetParentAnElement || (!isOffsetParentAnElement && !isFixed)) {
+    if (
+      getNodeName(offsetParent) !== 'body' ||
+      // https://github.com/popperjs/popper-core/issues/1078
+      isScrollParent(documentElement)
+    ) {
+      scroll = getNodeScroll(offsetParent);
+    }
+
+    if (isHTMLElement(offsetParent)) {
+      offsets = getBoundingClientRect(offsetParent, true);
+      offsets.x += offsetParent.clientLeft;
+      offsets.y += offsetParent.clientTop;
+    } else if (documentElement) {
+      offsets.x = getWindowScrollBarX(documentElement);
+    }
+  }
+
+  return {
+    x: rect.left + scroll.scrollLeft - offsets.x,
+    y: rect.top + scroll.scrollTop - offsets.y,
+    width: rect.width,
+    height: rect.height,
+  };
+}
diff --git a/popperjs/package/lib/dom-utils/getComputedStyle.d.ts b/popperjs/package/lib/dom-utils/getComputedStyle.d.ts
new file mode 100644
index 0000000..718e16a
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getComputedStyle.d.ts
@@ -0,0 +1 @@
+export default function getComputedStyle(element: Element): CSSStyleDeclaration;
diff --git a/popperjs/package/lib/dom-utils/getComputedStyle.js b/popperjs/package/lib/dom-utils/getComputedStyle.js
new file mode 100644
index 0000000..08221de
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getComputedStyle.js
@@ -0,0 +1,4 @@
+import getWindow from "./getWindow.js";
+export default function getComputedStyle(element) {
+  return getWindow(element).getComputedStyle(element);
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getComputedStyle.js.flow b/popperjs/package/lib/dom-utils/getComputedStyle.js.flow
new file mode 100644
index 0000000..dcd733b
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getComputedStyle.js.flow
@@ -0,0 +1,8 @@
+// @flow
+import getWindow from './getWindow';
+
+export default function getComputedStyle(
+  element: Element
+): CSSStyleDeclaration {
+  return getWindow(element).getComputedStyle(element);
+}
diff --git a/popperjs/package/lib/dom-utils/getDocumentElement.d.ts b/popperjs/package/lib/dom-utils/getDocumentElement.d.ts
new file mode 100644
index 0000000..262375c
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getDocumentElement.d.ts
@@ -0,0 +1,2 @@
+import type { Window } from "../types";
+export default function getDocumentElement(element: Element | Window): HTMLElement;
diff --git a/popperjs/package/lib/dom-utils/getDocumentElement.js b/popperjs/package/lib/dom-utils/getDocumentElement.js
new file mode 100644
index 0000000..c01240b
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getDocumentElement.js
@@ -0,0 +1,6 @@
+import { isElement } from "./instanceOf.js";
+export default function getDocumentElement(element) {
+  // $FlowFixMe[incompatible-return]: assume body is always available
+  return ((isElement(element) ? element.ownerDocument : // $FlowFixMe[prop-missing]
+  element.document) || window.document).documentElement;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getDocumentElement.js.flow b/popperjs/package/lib/dom-utils/getDocumentElement.js.flow
new file mode 100644
index 0000000..ad6fa5f
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getDocumentElement.js.flow
@@ -0,0 +1,15 @@
+// @flow
+import { isElement } from './instanceOf';
+import type { Window } from '../types';
+
+export default function getDocumentElement(
+  element: Element | Window
+): HTMLElement {
+  // $FlowFixMe[incompatible-return]: assume body is always available
+  return (
+    (isElement(element)
+      ? element.ownerDocument
+      : // $FlowFixMe[prop-missing]
+        element.document) || window.document
+  ).documentElement;
+}
diff --git a/popperjs/package/lib/dom-utils/getDocumentRect.d.ts b/popperjs/package/lib/dom-utils/getDocumentRect.d.ts
new file mode 100644
index 0000000..16ca02c
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getDocumentRect.d.ts
@@ -0,0 +1,2 @@
+import type { Rect } from "../types";
+export default function getDocumentRect(element: HTMLElement): Rect;
diff --git a/popperjs/package/lib/dom-utils/getDocumentRect.js b/popperjs/package/lib/dom-utils/getDocumentRect.js
new file mode 100644
index 0000000..d24df8e
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getDocumentRect.js
@@ -0,0 +1,29 @@
+import getDocumentElement from "./getDocumentElement.js";
+import getComputedStyle from "./getComputedStyle.js";
+import getWindowScrollBarX from "./getWindowScrollBarX.js";
+import getWindowScroll from "./getWindowScroll.js";
+import { max } from "../utils/math.js"; // Gets the entire size of the scrollable document area, even extending outside
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable
+
+export default function getDocumentRect(element) {
+  var _element$ownerDocumen;
+
+  var html = getDocumentElement(element);
+  var winScroll = getWindowScroll(element);
+  var body = (_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body;
+  var width = max(html.scrollWidth, html.clientWidth, body ? body.scrollWidth : 0, body ? body.clientWidth : 0);
+  var height = max(html.scrollHeight, html.clientHeight, body ? body.scrollHeight : 0, body ? body.clientHeight : 0);
+  var x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+  var y = -winScroll.scrollTop;
+
+  if (getComputedStyle(body || html).direction === 'rtl') {
+    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x,
+    y: y
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getDocumentRect.js.flow b/popperjs/package/lib/dom-utils/getDocumentRect.js.flow
new file mode 100644
index 0000000..c9f63b0
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getDocumentRect.js.flow
@@ -0,0 +1,37 @@
+// @flow
+import type { Rect } from '../types';
+import getDocumentElement from './getDocumentElement';
+import getComputedStyle from './getComputedStyle';
+import getWindowScrollBarX from './getWindowScrollBarX';
+import getWindowScroll from './getWindowScroll';
+import { max } from '../utils/math';
+
+// Gets the entire size of the scrollable document area, even extending outside
+// of the `<html>` and `<body>` rect bounds if horizontally scrollable
+export default function getDocumentRect(element: HTMLElement): Rect {
+  const html = getDocumentElement(element);
+  const winScroll = getWindowScroll(element);
+  const body = element.ownerDocument?.body;
+
+  const width = max(
+    html.scrollWidth,
+    html.clientWidth,
+    body ? body.scrollWidth : 0,
+    body ? body.clientWidth : 0
+  );
+  const height = max(
+    html.scrollHeight,
+    html.clientHeight,
+    body ? body.scrollHeight : 0,
+    body ? body.clientHeight : 0
+  );
+
+  let x = -winScroll.scrollLeft + getWindowScrollBarX(element);
+  const y = -winScroll.scrollTop;
+
+  if (getComputedStyle(body || html).direction === 'rtl') {
+    x += max(html.clientWidth, body ? body.clientWidth : 0) - width;
+  }
+
+  return { width, height, x, y };
+}
diff --git a/popperjs/package/lib/dom-utils/getHTMLElementScroll.d.ts b/popperjs/package/lib/dom-utils/getHTMLElementScroll.d.ts
new file mode 100644
index 0000000..df6cec9
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getHTMLElementScroll.d.ts
@@ -0,0 +1,4 @@
+export default function getHTMLElementScroll(element: HTMLElement): {
+    scrollLeft: number;
+    scrollTop: number;
+};
diff --git a/popperjs/package/lib/dom-utils/getHTMLElementScroll.js b/popperjs/package/lib/dom-utils/getHTMLElementScroll.js
new file mode 100644
index 0000000..d7f3600
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getHTMLElementScroll.js
@@ -0,0 +1,6 @@
+export default function getHTMLElementScroll(element) {
+  return {
+    scrollLeft: element.scrollLeft,
+    scrollTop: element.scrollTop
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getHTMLElementScroll.js.flow b/popperjs/package/lib/dom-utils/getHTMLElementScroll.js.flow
new file mode 100644
index 0000000..ac27aa1
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getHTMLElementScroll.js.flow
@@ -0,0 +1,8 @@
+// @flow
+
+export default function getHTMLElementScroll(element: HTMLElement) {
+  return {
+    scrollLeft: element.scrollLeft,
+    scrollTop: element.scrollTop,
+  };
+}
diff --git a/popperjs/package/lib/dom-utils/getLayoutRect.d.ts b/popperjs/package/lib/dom-utils/getLayoutRect.d.ts
new file mode 100644
index 0000000..537fcb1
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getLayoutRect.d.ts
@@ -0,0 +1,2 @@
+import type { Rect } from "../types";
+export default function getLayoutRect(element: HTMLElement): Rect;
diff --git a/popperjs/package/lib/dom-utils/getLayoutRect.js b/popperjs/package/lib/dom-utils/getLayoutRect.js
new file mode 100644
index 0000000..c3b421e
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getLayoutRect.js
@@ -0,0 +1,25 @@
+import getBoundingClientRect from "./getBoundingClientRect.js"; // Returns the layout rect of an element relative to its offsetParent. Layout
+// means it doesn't take into account transforms.
+
+export default function getLayoutRect(element) {
+  var clientRect = getBoundingClientRect(element); // Use the clientRect sizes if it's not been transformed.
+  // Fixes https://github.com/popperjs/popper-core/issues/1223
+
+  var width = element.offsetWidth;
+  var height = element.offsetHeight;
+
+  if (Math.abs(clientRect.width - width) <= 1) {
+    width = clientRect.width;
+  }
+
+  if (Math.abs(clientRect.height - height) <= 1) {
+    height = clientRect.height;
+  }
+
+  return {
+    x: element.offsetLeft,
+    y: element.offsetTop,
+    width: width,
+    height: height
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getLayoutRect.js.flow b/popperjs/package/lib/dom-utils/getLayoutRect.js.flow
new file mode 100644
index 0000000..fe99526
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getLayoutRect.js.flow
@@ -0,0 +1,29 @@
+// @flow
+import type { Rect } from '../types';
+import getBoundingClientRect from './getBoundingClientRect';
+
+// Returns the layout rect of an element relative to its offsetParent. Layout
+// means it doesn't take into account transforms.
+export default function getLayoutRect(element: HTMLElement): Rect {
+  const clientRect = getBoundingClientRect(element);
+
+  // Use the clientRect sizes if it's not been transformed.
+  // Fixes https://github.com/popperjs/popper-core/issues/1223
+  let width = element.offsetWidth;
+  let height = element.offsetHeight;
+
+  if (Math.abs(clientRect.width - width) <= 1) {
+    width = clientRect.width;
+  }
+
+  if (Math.abs(clientRect.height - height) <= 1) {
+    height = clientRect.height;
+  }
+
+  return {
+    x: element.offsetLeft,
+    y: element.offsetTop,
+    width,
+    height,
+  };
+}
diff --git a/popperjs/package/lib/dom-utils/getNodeName.d.ts b/popperjs/package/lib/dom-utils/getNodeName.d.ts
new file mode 100644
index 0000000..38e3798
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getNodeName.d.ts
@@ -0,0 +1,2 @@
+import type { Window } from "../types";
+export default function getNodeName(element: (Node | null | undefined) | Window): string | null | undefined;
diff --git a/popperjs/package/lib/dom-utils/getNodeName.js b/popperjs/package/lib/dom-utils/getNodeName.js
new file mode 100644
index 0000000..393ae7a
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getNodeName.js
@@ -0,0 +1,3 @@
+export default function getNodeName(element) {
+  return element ? (element.nodeName || '').toLowerCase() : null;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getNodeName.js.flow b/popperjs/package/lib/dom-utils/getNodeName.js.flow
new file mode 100644
index 0000000..72e5b81
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getNodeName.js.flow
@@ -0,0 +1,6 @@
+// @flow
+import type { Window } from '../types';
+
+export default function getNodeName(element: ?Node | Window): ?string {
+  return element ? (element.nodeName || '').toLowerCase() : null;
+}
diff --git a/popperjs/package/lib/dom-utils/getNodeScroll.d.ts b/popperjs/package/lib/dom-utils/getNodeScroll.d.ts
new file mode 100644
index 0000000..6f5b1aa
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getNodeScroll.d.ts
@@ -0,0 +1,5 @@
+import type { Window } from "../types";
+export default function getNodeScroll(node: Node | Window): {
+    scrollLeft: any;
+    scrollTop: any;
+};
diff --git a/popperjs/package/lib/dom-utils/getNodeScroll.js b/popperjs/package/lib/dom-utils/getNodeScroll.js
new file mode 100644
index 0000000..afef366
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getNodeScroll.js
@@ -0,0 +1,11 @@
+import getWindowScroll from "./getWindowScroll.js";
+import getWindow from "./getWindow.js";
+import { isHTMLElement } from "./instanceOf.js";
+import getHTMLElementScroll from "./getHTMLElementScroll.js";
+export default function getNodeScroll(node) {
+  if (node === getWindow(node) || !isHTMLElement(node)) {
+    return getWindowScroll(node);
+  } else {
+    return getHTMLElementScroll(node);
+  }
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getNodeScroll.js.flow b/popperjs/package/lib/dom-utils/getNodeScroll.js.flow
new file mode 100644
index 0000000..314574e
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getNodeScroll.js.flow
@@ -0,0 +1,14 @@
+// @flow
+import getWindowScroll from './getWindowScroll';
+import getWindow from './getWindow';
+import { isHTMLElement } from './instanceOf';
+import getHTMLElementScroll from './getHTMLElementScroll';
+import type { Window } from '../types';
+
+export default function getNodeScroll(node: Node | Window) {
+  if (node === getWindow(node) || !isHTMLElement(node)) {
+    return getWindowScroll(node);
+  } else {
+    return getHTMLElementScroll(node);
+  }
+}
diff --git a/popperjs/package/lib/dom-utils/getOffsetParent.d.ts b/popperjs/package/lib/dom-utils/getOffsetParent.d.ts
new file mode 100644
index 0000000..94b4301
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getOffsetParent.d.ts
@@ -0,0 +1 @@
+export default function getOffsetParent(element: Element): any;
diff --git a/popperjs/package/lib/dom-utils/getOffsetParent.js b/popperjs/package/lib/dom-utils/getOffsetParent.js
new file mode 100644
index 0000000..5300b0f
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getOffsetParent.js
@@ -0,0 +1,64 @@
+import getWindow from "./getWindow.js";
+import getNodeName from "./getNodeName.js";
+import getComputedStyle from "./getComputedStyle.js";
+import { isHTMLElement } from "./instanceOf.js";
+import isTableElement from "./isTableElement.js";
+import getParentNode from "./getParentNode.js";
+
+function getTrueOffsetParent(element) {
+  if (!isHTMLElement(element) || // https://github.com/popperjs/popper-core/issues/837
+  getComputedStyle(element).position === 'fixed') {
+    return null;
+  }
+
+  return element.offsetParent;
+} // `.offsetParent` reports `null` for fixed elements, while absolute elements
+// return the containing block
+
+
+function getContainingBlock(element) {
+  var isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+  var isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+  if (isIE && isHTMLElement(element)) {
+    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+    var elementCss = getComputedStyle(element);
+
+    if (elementCss.position === 'fixed') {
+      return null;
+    }
+  }
+
+  var currentNode = getParentNode(element);
+
+  while (isHTMLElement(currentNode) && ['html', 'body'].indexOf(getNodeName(currentNode)) < 0) {
+    var css = getComputedStyle(currentNode); // This is non-exhaustive but covers the most common CSS properties that
+    // create a containing block.
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+
+    if (css.transform !== 'none' || css.perspective !== 'none' || css.contain === 'paint' || ['transform', 'perspective'].indexOf(css.willChange) !== -1 || isFirefox && css.willChange === 'filter' || isFirefox && css.filter && css.filter !== 'none') {
+      return currentNode;
+    } else {
+      currentNode = currentNode.parentNode;
+    }
+  }
+
+  return null;
+} // Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+
+
+export default function getOffsetParent(element) {
+  var window = getWindow(element);
+  var offsetParent = getTrueOffsetParent(element);
+
+  while (offsetParent && isTableElement(offsetParent) && getComputedStyle(offsetParent).position === 'static') {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+
+  if (offsetParent && (getNodeName(offsetParent) === 'html' || getNodeName(offsetParent) === 'body' && getComputedStyle(offsetParent).position === 'static')) {
+    return window;
+  }
+
+  return offsetParent || getContainingBlock(element) || window;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getOffsetParent.js.flow b/popperjs/package/lib/dom-utils/getOffsetParent.js.flow
new file mode 100644
index 0000000..5a7cdb3
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getOffsetParent.js.flow
@@ -0,0 +1,88 @@
+// @flow
+import getWindow from './getWindow';
+import getNodeName from './getNodeName';
+import getComputedStyle from './getComputedStyle';
+import { isHTMLElement } from './instanceOf';
+import isTableElement from './isTableElement';
+import getParentNode from './getParentNode';
+
+function getTrueOffsetParent(element: Element): ?Element {
+  if (
+    !isHTMLElement(element) ||
+    // https://github.com/popperjs/popper-core/issues/837
+    getComputedStyle(element).position === 'fixed'
+  ) {
+    return null;
+  }
+
+  return element.offsetParent;
+}
+
+// `.offsetParent` reports `null` for fixed elements, while absolute elements
+// return the containing block
+function getContainingBlock(element: Element) {
+  const isFirefox = navigator.userAgent.toLowerCase().indexOf('firefox') !== -1;
+  const isIE = navigator.userAgent.indexOf('Trident') !== -1;
+
+  if (isIE && isHTMLElement(element)) {
+    // In IE 9, 10 and 11 fixed elements containing block is always established by the viewport
+    const elementCss = getComputedStyle(element);
+    if (elementCss.position === 'fixed') {
+      return null;
+    }
+  }
+
+  let currentNode = getParentNode(element);
+
+  while (
+    isHTMLElement(currentNode) &&
+    ['html', 'body'].indexOf(getNodeName(currentNode)) < 0
+  ) {
+    const css = getComputedStyle(currentNode);
+
+    // This is non-exhaustive but covers the most common CSS properties that
+    // create a containing block.
+    // https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#identifying_the_containing_block
+    if (
+      css.transform !== 'none' ||
+      css.perspective !== 'none' ||
+      css.contain === 'paint' ||
+      ['transform', 'perspective'].indexOf(css.willChange) !== -1 ||
+      (isFirefox && css.willChange === 'filter') ||
+      (isFirefox && css.filter && css.filter !== 'none')
+    ) {
+      return currentNode;
+    } else {
+      currentNode = currentNode.parentNode;
+    }
+  }
+
+  return null;
+}
+
+// Gets the closest ancestor positioned element. Handles some edge cases,
+// such as table ancestors and cross browser bugs.
+export default function getOffsetParent(element: Element) {
+  const window = getWindow(element);
+
+  let offsetParent = getTrueOffsetParent(element);
+
+  while (
+    offsetParent &&
+    isTableElement(offsetParent) &&
+    getComputedStyle(offsetParent).position === 'static'
+  ) {
+    offsetParent = getTrueOffsetParent(offsetParent);
+  }
+
+  if (
+    offsetParent &&
+    (getNodeName(offsetParent) === 'html' ||
+      (getNodeName(offsetParent) === 'body' &&
+        getComputedStyle(offsetParent).position === 'static'))
+  ) {
+    return window;
+  }
+
+  return offsetParent || getContainingBlock(element) || window;
+}
diff --git a/popperjs/package/lib/dom-utils/getParentNode.d.ts b/popperjs/package/lib/dom-utils/getParentNode.d.ts
new file mode 100644
index 0000000..85b3e8b
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getParentNode.d.ts
@@ -0,0 +1 @@
+export default function getParentNode(element: Node | ShadowRoot): Node;
diff --git a/popperjs/package/lib/dom-utils/getParentNode.js b/popperjs/package/lib/dom-utils/getParentNode.js
new file mode 100644
index 0000000..06d3e98
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getParentNode.js
@@ -0,0 +1,19 @@
+import getNodeName from "./getNodeName.js";
+import getDocumentElement from "./getDocumentElement.js";
+import { isShadowRoot } from "./instanceOf.js";
+export default function getParentNode(element) {
+  if (getNodeName(element) === 'html') {
+    return element;
+  }
+
+  return (// this is a quicker (but less type safe) way to save quite some bytes from the bundle
+    // $FlowFixMe[incompatible-return]
+    // $FlowFixMe[prop-missing]
+    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+    element.parentNode || ( // DOM Element detected
+    isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+    // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+    getDocumentElement(element) // fallback
+
+  );
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getParentNode.js.flow b/popperjs/package/lib/dom-utils/getParentNode.js.flow
new file mode 100644
index 0000000..c2c379b
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getParentNode.js.flow
@@ -0,0 +1,21 @@
+// @flow
+import getNodeName from './getNodeName';
+import getDocumentElement from './getDocumentElement';
+import { isShadowRoot } from './instanceOf';
+
+export default function getParentNode(element: Node | ShadowRoot): Node {
+  if (getNodeName(element) === 'html') {
+    return element;
+  }
+
+  return (
+    // this is a quicker (but less type safe) way to save quite some bytes from the bundle
+    // $FlowFixMe[incompatible-return]
+    // $FlowFixMe[prop-missing]
+    element.assignedSlot || // step into the shadow DOM of the parent of a slotted node
+    element.parentNode || // DOM Element detected
+    (isShadowRoot(element) ? element.host : null) || // ShadowRoot detected
+    // $FlowFixMe[incompatible-call]: HTMLElement is a Node
+    getDocumentElement(element) // fallback
+  );
+}
diff --git a/popperjs/package/lib/dom-utils/getScrollParent.d.ts b/popperjs/package/lib/dom-utils/getScrollParent.d.ts
new file mode 100644
index 0000000..2c5f758
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getScrollParent.d.ts
@@ -0,0 +1 @@
+export default function getScrollParent(node: Node): HTMLElement;
diff --git a/popperjs/package/lib/dom-utils/getScrollParent.js b/popperjs/package/lib/dom-utils/getScrollParent.js
new file mode 100644
index 0000000..a264c4b
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getScrollParent.js
@@ -0,0 +1,16 @@
+import getParentNode from "./getParentNode.js";
+import isScrollParent from "./isScrollParent.js";
+import getNodeName from "./getNodeName.js";
+import { isHTMLElement } from "./instanceOf.js";
+export default function getScrollParent(node) {
+  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return node.ownerDocument.body;
+  }
+
+  if (isHTMLElement(node) && isScrollParent(node)) {
+    return node;
+  }
+
+  return getScrollParent(getParentNode(node));
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getScrollParent.js.flow b/popperjs/package/lib/dom-utils/getScrollParent.js.flow
new file mode 100644
index 0000000..ee0002d
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getScrollParent.js.flow
@@ -0,0 +1,18 @@
+// @flow
+import getParentNode from './getParentNode';
+import isScrollParent from './isScrollParent';
+import getNodeName from './getNodeName';
+import { isHTMLElement } from './instanceOf';
+
+export default function getScrollParent(node: Node): HTMLElement {
+  if (['html', 'body', '#document'].indexOf(getNodeName(node)) >= 0) {
+    // $FlowFixMe[incompatible-return]: assume body is always available
+    return node.ownerDocument.body;
+  }
+
+  if (isHTMLElement(node) && isScrollParent(node)) {
+    return node;
+  }
+
+  return getScrollParent(getParentNode(node));
+}
diff --git a/popperjs/package/lib/dom-utils/getViewportRect.d.ts b/popperjs/package/lib/dom-utils/getViewportRect.d.ts
new file mode 100644
index 0000000..ed163c4
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getViewportRect.d.ts
@@ -0,0 +1,6 @@
+export default function getViewportRect(element: Element): {
+    width: number;
+    height: number;
+    x: number;
+    y: number;
+};
diff --git a/popperjs/package/lib/dom-utils/getViewportRect.js b/popperjs/package/lib/dom-utils/getViewportRect.js
new file mode 100644
index 0000000..8912df5
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getViewportRect.js
@@ -0,0 +1,40 @@
+import getWindow from "./getWindow.js";
+import getDocumentElement from "./getDocumentElement.js";
+import getWindowScrollBarX from "./getWindowScrollBarX.js";
+export default function getViewportRect(element) {
+  var win = getWindow(element);
+  var html = getDocumentElement(element);
+  var visualViewport = win.visualViewport;
+  var width = html.clientWidth;
+  var height = html.clientHeight;
+  var x = 0;
+  var y = 0; // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+  // can be obscured underneath it.
+  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+  // if it isn't open, so if this isn't available, the popper will be detected
+  // to overflow the bottom of the screen too early.
+
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height; // Uses Layout Viewport (like Chrome; Safari does not currently)
+    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+    // errors due to floating point numbers, so we need to check precision.
+    // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+    // Feature detection fails in mobile emulation mode in Chrome.
+    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+    // 0.001
+    // Fallback here: "Not Safari" userAgent
+
+    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+
+  return {
+    width: width,
+    height: height,
+    x: x + getWindowScrollBarX(element),
+    y: y
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getViewportRect.js.flow b/popperjs/package/lib/dom-utils/getViewportRect.js.flow
new file mode 100644
index 0000000..44421f8
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getViewportRect.js.flow
@@ -0,0 +1,46 @@
+// @flow
+import getWindow from './getWindow';
+import getDocumentElement from './getDocumentElement';
+import getWindowScrollBarX from './getWindowScrollBarX';
+
+export default function getViewportRect(element: Element) {
+  const win = getWindow(element);
+  const html = getDocumentElement(element);
+  const visualViewport = win.visualViewport;
+
+  let width = html.clientWidth;
+  let height = html.clientHeight;
+  let x = 0;
+  let y = 0;
+
+  // NB: This isn't supported on iOS <= 12. If the keyboard is open, the popper
+  // can be obscured underneath it.
+  // Also, `html.clientHeight` adds the bottom bar height in Safari iOS, even
+  // if it isn't open, so if this isn't available, the popper will be detected
+  // to overflow the bottom of the screen too early.
+  if (visualViewport) {
+    width = visualViewport.width;
+    height = visualViewport.height;
+
+    // Uses Layout Viewport (like Chrome; Safari does not currently)
+    // In Chrome, it returns a value very close to 0 (+/-) but contains rounding
+    // errors due to floating point numbers, so we need to check precision.
+    // Safari returns a number <= 0, usually < -1 when pinch-zoomed
+
+    // Feature detection fails in mobile emulation mode in Chrome.
+    // Math.abs(win.innerWidth / visualViewport.scale - visualViewport.width) <
+    // 0.001
+    // Fallback here: "Not Safari" userAgent
+    if (!/^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+      x = visualViewport.offsetLeft;
+      y = visualViewport.offsetTop;
+    }
+  }
+
+  return {
+    width,
+    height,
+    x: x + getWindowScrollBarX(element),
+    y,
+  };
+}
diff --git a/popperjs/package/lib/dom-utils/getWindow.d.ts b/popperjs/package/lib/dom-utils/getWindow.d.ts
new file mode 100644
index 0000000..1b61ec9
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindow.d.ts
@@ -0,0 +1 @@
+export default function getWindow(node: any): any;
diff --git a/popperjs/package/lib/dom-utils/getWindow.js b/popperjs/package/lib/dom-utils/getWindow.js
new file mode 100644
index 0000000..5df7a48
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindow.js
@@ -0,0 +1,12 @@
+export default function getWindow(node) {
+  if (node == null) {
+    return window;
+  }
+
+  if (node.toString() !== '[object Window]') {
+    var ownerDocument = node.ownerDocument;
+    return ownerDocument ? ownerDocument.defaultView || window : window;
+  }
+
+  return node;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getWindow.js.flow b/popperjs/package/lib/dom-utils/getWindow.js.flow
new file mode 100644
index 0000000..ff38250
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindow.js.flow
@@ -0,0 +1,16 @@
+// @flow
+import type { Window } from '../types';
+declare function getWindow(node: Node | Window): Window;
+
+export default function getWindow(node) {
+  if (node == null) {
+    return window;
+  }
+
+  if (node.toString() !== '[object Window]') {
+    const ownerDocument = node.ownerDocument;
+    return ownerDocument ? ownerDocument.defaultView || window : window;
+  }
+
+  return node;
+}
diff --git a/popperjs/package/lib/dom-utils/getWindowScroll.d.ts b/popperjs/package/lib/dom-utils/getWindowScroll.d.ts
new file mode 100644
index 0000000..708058e
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindowScroll.d.ts
@@ -0,0 +1,5 @@
+import type { Window } from "../types";
+export default function getWindowScroll(node: Node | Window): {
+    scrollLeft: any;
+    scrollTop: any;
+};
diff --git a/popperjs/package/lib/dom-utils/getWindowScroll.js b/popperjs/package/lib/dom-utils/getWindowScroll.js
new file mode 100644
index 0000000..61eb751
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindowScroll.js
@@ -0,0 +1,10 @@
+import getWindow from "./getWindow.js";
+export default function getWindowScroll(node) {
+  var win = getWindow(node);
+  var scrollLeft = win.pageXOffset;
+  var scrollTop = win.pageYOffset;
+  return {
+    scrollLeft: scrollLeft,
+    scrollTop: scrollTop
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getWindowScroll.js.flow b/popperjs/package/lib/dom-utils/getWindowScroll.js.flow
new file mode 100644
index 0000000..2b4c267
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindowScroll.js.flow
@@ -0,0 +1,14 @@
+// @flow
+import getWindow from './getWindow';
+import type { Window } from '../types';
+
+export default function getWindowScroll(node: Node | Window) {
+  const win = getWindow(node);
+  const scrollLeft = win.pageXOffset;
+  const scrollTop = win.pageYOffset;
+
+  return {
+    scrollLeft,
+    scrollTop,
+  };
+}
diff --git a/popperjs/package/lib/dom-utils/getWindowScrollBarX.d.ts b/popperjs/package/lib/dom-utils/getWindowScrollBarX.d.ts
new file mode 100644
index 0000000..d71457d
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindowScrollBarX.d.ts
@@ -0,0 +1 @@
+export default function getWindowScrollBarX(element: Element): number;
diff --git a/popperjs/package/lib/dom-utils/getWindowScrollBarX.js b/popperjs/package/lib/dom-utils/getWindowScrollBarX.js
new file mode 100644
index 0000000..b650d94
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindowScrollBarX.js
@@ -0,0 +1,13 @@
+import getBoundingClientRect from "./getBoundingClientRect.js";
+import getDocumentElement from "./getDocumentElement.js";
+import getWindowScroll from "./getWindowScroll.js";
+export default function getWindowScrollBarX(element) {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  // Popper 1 is broken in this case and never had a bug report so let's assume
+  // it's not an issue. I don't think anyone ever specifies width on <html>
+  // anyway.
+  // Browsers where the left scrollbar doesn't cause an issue report `0` for
+  // this (e.g. Edge 2019, IE11, Safari)
+  return getBoundingClientRect(getDocumentElement(element)).left + getWindowScroll(element).scrollLeft;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/getWindowScrollBarX.js.flow b/popperjs/package/lib/dom-utils/getWindowScrollBarX.js.flow
new file mode 100644
index 0000000..9d0d86d
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getWindowScrollBarX.js.flow
@@ -0,0 +1,18 @@
+// @flow
+import getBoundingClientRect from './getBoundingClientRect';
+import getDocumentElement from './getDocumentElement';
+import getWindowScroll from './getWindowScroll';
+
+export default function getWindowScrollBarX(element: Element): number {
+  // If <html> has a CSS width greater than the viewport, then this will be
+  // incorrect for RTL.
+  // Popper 1 is broken in this case and never had a bug report so let's assume
+  // it's not an issue. I don't think anyone ever specifies width on <html>
+  // anyway.
+  // Browsers where the left scrollbar doesn't cause an issue report `0` for
+  // this (e.g. Edge 2019, IE11, Safari)
+  return (
+    getBoundingClientRect(getDocumentElement(element)).left +
+    getWindowScroll(element).scrollLeft
+  );
+}
diff --git a/popperjs/package/lib/dom-utils/instanceOf.d.ts b/popperjs/package/lib/dom-utils/instanceOf.d.ts
new file mode 100644
index 0000000..bc81ffc
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/instanceOf.d.ts
@@ -0,0 +1,4 @@
+declare function isElement(node: unknown): boolean;
+declare function isHTMLElement(node: unknown): boolean;
+declare function isShadowRoot(node: unknown): boolean;
+export { isElement, isHTMLElement, isShadowRoot };
diff --git a/popperjs/package/lib/dom-utils/instanceOf.js b/popperjs/package/lib/dom-utils/instanceOf.js
new file mode 100644
index 0000000..ee51ea6
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/instanceOf.js
@@ -0,0 +1,23 @@
+import getWindow from "./getWindow.js";
+
+function isElement(node) {
+  var OwnElement = getWindow(node).Element;
+  return node instanceof OwnElement || node instanceof Element;
+}
+
+function isHTMLElement(node) {
+  var OwnElement = getWindow(node).HTMLElement;
+  return node instanceof OwnElement || node instanceof HTMLElement;
+}
+
+function isShadowRoot(node) {
+  // IE 11 has no ShadowRoot
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+
+  var OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+
+export { isElement, isHTMLElement, isShadowRoot };
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/instanceOf.js.flow b/popperjs/package/lib/dom-utils/instanceOf.js.flow
new file mode 100644
index 0000000..28f6477
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/instanceOf.js.flow
@@ -0,0 +1,29 @@
+// @flow
+import getWindow from './getWindow';
+
+declare function isElement(node: mixed): boolean %checks(node instanceof
+  Element);
+function isElement(node) {
+  const OwnElement = getWindow(node).Element;
+  return node instanceof OwnElement || node instanceof Element;
+}
+
+declare function isHTMLElement(node: mixed): boolean %checks(node instanceof
+  HTMLElement);
+function isHTMLElement(node) {
+  const OwnElement = getWindow(node).HTMLElement;
+  return node instanceof OwnElement || node instanceof HTMLElement;
+}
+
+declare function isShadowRoot(node: mixed): boolean %checks(node instanceof
+  ShadowRoot);
+function isShadowRoot(node) {
+  // IE 11 has no ShadowRoot
+  if (typeof ShadowRoot === 'undefined') {
+    return false;
+  }
+  const OwnElement = getWindow(node).ShadowRoot;
+  return node instanceof OwnElement || node instanceof ShadowRoot;
+}
+
+export { isElement, isHTMLElement, isShadowRoot };
diff --git a/popperjs/package/lib/dom-utils/isScrollParent.d.ts b/popperjs/package/lib/dom-utils/isScrollParent.d.ts
new file mode 100644
index 0000000..4e76a95
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/isScrollParent.d.ts
@@ -0,0 +1 @@
+export default function isScrollParent(element: HTMLElement): boolean;
diff --git a/popperjs/package/lib/dom-utils/isScrollParent.js b/popperjs/package/lib/dom-utils/isScrollParent.js
new file mode 100644
index 0000000..9d6e18e
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/isScrollParent.js
@@ -0,0 +1,10 @@
+import getComputedStyle from "./getComputedStyle.js";
+export default function isScrollParent(element) {
+  // Firefox wants us to check `-x` and `-y` variations as well
+  var _getComputedStyle = getComputedStyle(element),
+      overflow = _getComputedStyle.overflow,
+      overflowX = _getComputedStyle.overflowX,
+      overflowY = _getComputedStyle.overflowY;
+
+  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/isScrollParent.js.flow b/popperjs/package/lib/dom-utils/isScrollParent.js.flow
new file mode 100644
index 0000000..0e12f95
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/isScrollParent.js.flow
@@ -0,0 +1,8 @@
+// @flow
+import getComputedStyle from './getComputedStyle';
+
+export default function isScrollParent(element: HTMLElement): boolean {
+  // Firefox wants us to check `-x` and `-y` variations as well
+  const { overflow, overflowX, overflowY } = getComputedStyle(element);
+  return /auto|scroll|overlay|hidden/.test(overflow + overflowY + overflowX);
+}
diff --git a/popperjs/package/lib/dom-utils/isTableElement.d.ts b/popperjs/package/lib/dom-utils/isTableElement.d.ts
new file mode 100644
index 0000000..24c55fc
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/isTableElement.d.ts
@@ -0,0 +1 @@
+export default function isTableElement(element: Element): boolean;
diff --git a/popperjs/package/lib/dom-utils/isTableElement.js b/popperjs/package/lib/dom-utils/isTableElement.js
new file mode 100644
index 0000000..7c36c8a
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/isTableElement.js
@@ -0,0 +1,4 @@
+import getNodeName from "./getNodeName.js";
+export default function isTableElement(element) {
+  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/isTableElement.js.flow b/popperjs/package/lib/dom-utils/isTableElement.js.flow
new file mode 100644
index 0000000..adb7f8d
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/isTableElement.js.flow
@@ -0,0 +1,6 @@
+// @flow
+import getNodeName from './getNodeName';
+
+export default function isTableElement(element: Element): boolean {
+  return ['table', 'td', 'th'].indexOf(getNodeName(element)) >= 0;
+}
diff --git a/popperjs/package/lib/dom-utils/listScrollParents.d.ts b/popperjs/package/lib/dom-utils/listScrollParents.d.ts
new file mode 100644
index 0000000..96e68c5
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/listScrollParents.d.ts
@@ -0,0 +1,2 @@
+import type { Window, VisualViewport } from "../types";
+export default function listScrollParents(element: Node, list?: Array<Element | Window>): Array<Element | Window | VisualViewport>;
diff --git a/popperjs/package/lib/dom-utils/listScrollParents.js b/popperjs/package/lib/dom-utils/listScrollParents.js
new file mode 100644
index 0000000..24e8bd2
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/listScrollParents.js
@@ -0,0 +1,26 @@
+import getScrollParent from "./getScrollParent.js";
+import getParentNode from "./getParentNode.js";
+import getWindow from "./getWindow.js";
+import isScrollParent from "./isScrollParent.js";
+/*
+given a DOM element, return the list of all scroll parents, up the list of ancesors
+until we get to the top window object. This list is what we attach scroll listeners
+to, because if any of these parent elements scroll, we'll need to re-calculate the
+reference element's position.
+*/
+
+export default function listScrollParents(element, list) {
+  var _element$ownerDocumen;
+
+  if (list === void 0) {
+    list = [];
+  }
+
+  var scrollParent = getScrollParent(element);
+  var isBody = scrollParent === ((_element$ownerDocumen = element.ownerDocument) == null ? void 0 : _element$ownerDocumen.body);
+  var win = getWindow(scrollParent);
+  var target = isBody ? [win].concat(win.visualViewport || [], isScrollParent(scrollParent) ? scrollParent : []) : scrollParent;
+  var updatedList = list.concat(target);
+  return isBody ? updatedList : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+  updatedList.concat(listScrollParents(getParentNode(target)));
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/dom-utils/listScrollParents.js.flow b/popperjs/package/lib/dom-utils/listScrollParents.js.flow
new file mode 100644
index 0000000..ef86b04
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/listScrollParents.js.flow
@@ -0,0 +1,33 @@
+// @flow
+import getScrollParent from './getScrollParent';
+import getParentNode from './getParentNode';
+import getWindow from './getWindow';
+import type { Window, VisualViewport } from '../types';
+import isScrollParent from './isScrollParent';
+
+/*
+given a DOM element, return the list of all scroll parents, up the list of ancesors
+until we get to the top window object. This list is what we attach scroll listeners
+to, because if any of these parent elements scroll, we'll need to re-calculate the
+reference element's position.
+*/
+export default function listScrollParents(
+  element: Node,
+  list: Array<Element | Window> = []
+): Array<Element | Window | VisualViewport> {
+  const scrollParent = getScrollParent(element);
+  const isBody = scrollParent === element.ownerDocument?.body;
+  const win = getWindow(scrollParent);
+  const target = isBody
+    ? [win].concat(
+        win.visualViewport || [],
+        isScrollParent(scrollParent) ? scrollParent : []
+      )
+    : scrollParent;
+  const updatedList = list.concat(target);
+
+  return isBody
+    ? updatedList
+    : // $FlowFixMe[incompatible-call]: isBody tells us target will be an HTMLElement here
+      updatedList.concat(listScrollParents(getParentNode(target)));
+}
diff --git a/popperjs/package/lib/enums.d.ts b/popperjs/package/lib/enums.d.ts
new file mode 100644
index 0000000..4b4a891
--- /dev/null
+++ b/popperjs/package/lib/enums.d.ts
@@ -0,0 +1,34 @@
+export declare const top: "top";
+export declare const bottom: "bottom";
+export declare const right: "right";
+export declare const left: "left";
+export declare const auto: "auto";
+export declare type BasePlacement = typeof top | typeof bottom | typeof right | typeof left;
+export declare const basePlacements: Array<BasePlacement>;
+export declare const start: "start";
+export declare const end: "end";
+export declare type Variation = typeof start | typeof end;
+export declare const clippingParents: "clippingParents";
+export declare const viewport: "viewport";
+export declare type Boundary = Element | Array<Element> | typeof clippingParents;
+export declare type RootBoundary = typeof viewport | "document";
+export declare const popper: "popper";
+export declare const reference: "reference";
+export declare type Context = typeof popper | typeof reference;
+export declare type VariationPlacement = "top-start" | "top-end" | "bottom-start" | "bottom-end" | "right-start" | "right-end" | "left-start" | "left-end";
+export declare type AutoPlacement = "auto" | "auto-start" | "auto-end";
+export declare type ComputedPlacement = VariationPlacement | BasePlacement;
+export declare type Placement = AutoPlacement | BasePlacement | VariationPlacement;
+export declare const variationPlacements: Array<VariationPlacement>;
+export declare const placements: Array<Placement>;
+export declare const beforeRead: "beforeRead";
+export declare const read: "read";
+export declare const afterRead: "afterRead";
+export declare const beforeMain: "beforeMain";
+export declare const main: "main";
+export declare const afterMain: "afterMain";
+export declare const beforeWrite: "beforeWrite";
+export declare const write: "write";
+export declare const afterWrite: "afterWrite";
+export declare const modifierPhases: Array<ModifierPhases>;
+export declare type ModifierPhases = typeof beforeRead | typeof read | typeof afterRead | typeof beforeMain | typeof main | typeof afterMain | typeof beforeWrite | typeof write | typeof afterWrite;
diff --git a/popperjs/package/lib/enums.js b/popperjs/package/lib/enums.js
new file mode 100644
index 0000000..e3714f5
--- /dev/null
+++ b/popperjs/package/lib/enums.js
@@ -0,0 +1,31 @@
+export var top = 'top';
+export var bottom = 'bottom';
+export var right = 'right';
+export var left = 'left';
+export var auto = 'auto';
+export var basePlacements = [top, bottom, right, left];
+export var start = 'start';
+export var end = 'end';
+export var clippingParents = 'clippingParents';
+export var viewport = 'viewport';
+export var popper = 'popper';
+export var reference = 'reference';
+export var variationPlacements = /*#__PURE__*/basePlacements.reduce(function (acc, placement) {
+  return acc.concat([placement + "-" + start, placement + "-" + end]);
+}, []);
+export var placements = /*#__PURE__*/[].concat(basePlacements, [auto]).reduce(function (acc, placement) {
+  return acc.concat([placement, placement + "-" + start, placement + "-" + end]);
+}, []); // modifiers that need to read the DOM
+
+export var beforeRead = 'beforeRead';
+export var read = 'read';
+export var afterRead = 'afterRead'; // pure-logic modifiers
+
+export var beforeMain = 'beforeMain';
+export var main = 'main';
+export var afterMain = 'afterMain'; // modifier with the purpose to write to the DOM (or write into a framework state)
+
+export var beforeWrite = 'beforeWrite';
+export var write = 'write';
+export var afterWrite = 'afterWrite';
+export var modifierPhases = [beforeRead, read, afterRead, beforeMain, main, afterMain, beforeWrite, write, afterWrite];
\ No newline at end of file
diff --git a/popperjs/package/lib/enums.js.flow b/popperjs/package/lib/enums.js.flow
new file mode 100644
index 0000000..256f26b
--- /dev/null
+++ b/popperjs/package/lib/enums.js.flow
@@ -0,0 +1,91 @@
+// @flow
+export const top: 'top' = 'top';
+export const bottom: 'bottom' = 'bottom';
+export const right: 'right' = 'right';
+export const left: 'left' = 'left';
+export const auto: 'auto' = 'auto';
+export type BasePlacement =
+  | typeof top
+  | typeof bottom
+  | typeof right
+  | typeof left;
+export const basePlacements: Array<BasePlacement> = [top, bottom, right, left];
+
+export const start: 'start' = 'start';
+export const end: 'end' = 'end';
+export type Variation = typeof start | typeof end;
+
+export const clippingParents: 'clippingParents' = 'clippingParents';
+export const viewport: 'viewport' = 'viewport';
+export type Boundary = Element | Array<Element> | typeof clippingParents;
+export type RootBoundary = typeof viewport | 'document';
+
+export const popper: 'popper' = 'popper';
+export const reference: 'reference' = 'reference';
+export type Context = typeof popper | typeof reference;
+
+export type VariationPlacement =
+  | 'top-start'
+  | 'top-end'
+  | 'bottom-start'
+  | 'bottom-end'
+  | 'right-start'
+  | 'right-end'
+  | 'left-start'
+  | 'left-end';
+export type AutoPlacement = 'auto' | 'auto-start' | 'auto-end';
+export type ComputedPlacement = VariationPlacement | BasePlacement;
+export type Placement = AutoPlacement | BasePlacement | VariationPlacement;
+
+export const variationPlacements: Array<VariationPlacement> = basePlacements.reduce(
+  (acc: Array<VariationPlacement>, placement: BasePlacement) =>
+    acc.concat([(`${placement}-${start}`: any), (`${placement}-${end}`: any)]),
+  []
+);
+export const placements: Array<Placement> = [...basePlacements, auto].reduce(
+  (
+    acc: Array<Placement>,
+    placement: BasePlacement | typeof auto
+  ): Array<Placement> =>
+    acc.concat([
+      placement,
+      (`${placement}-${start}`: any),
+      (`${placement}-${end}`: any),
+    ]),
+  []
+);
+
+// modifiers that need to read the DOM
+export const beforeRead: 'beforeRead' = 'beforeRead';
+export const read: 'read' = 'read';
+export const afterRead: 'afterRead' = 'afterRead';
+// pure-logic modifiers
+export const beforeMain: 'beforeMain' = 'beforeMain';
+export const main: 'main' = 'main';
+export const afterMain: 'afterMain' = 'afterMain';
+// modifier with the purpose to write to the DOM (or write into a framework state)
+export const beforeWrite: 'beforeWrite' = 'beforeWrite';
+export const write: 'write' = 'write';
+export const afterWrite: 'afterWrite' = 'afterWrite';
+export const modifierPhases: Array<ModifierPhases> = [
+  beforeRead,
+  read,
+  afterRead,
+  beforeMain,
+  main,
+  afterMain,
+  beforeWrite,
+  write,
+  afterWrite,
+];
+
+export type ModifierPhases =
+  | typeof beforeRead
+  | typeof read
+  | typeof afterRead
+  | typeof beforeMain
+  | typeof main
+  | typeof afterMain
+  | typeof beforeWrite
+  | typeof write
+  | typeof afterWrite;
diff --git a/popperjs/package/lib/index.d.ts b/popperjs/package/lib/index.d.ts
new file mode 100644
index 0000000..842c74f
--- /dev/null
+++ b/popperjs/package/lib/index.d.ts
@@ -0,0 +1,6 @@
+export * from "./types";
+export * from "./enums";
+export * from "./modifiers";
+export { popperGenerator, detectOverflow, createPopper as createPopperBase } from "./createPopper";
+export { createPopper } from "./popper";
+export { createPopper as createPopperLite } from "./popper-lite";
diff --git a/popperjs/package/lib/index.js b/popperjs/package/lib/index.js
new file mode 100644
index 0000000..c0c8b52
--- /dev/null
+++ b/popperjs/package/lib/index.js
@@ -0,0 +1,8 @@
+export * from "./enums.js";
+export * from "./modifiers/index.js"; // eslint-disable-next-line import/no-unused-modules
+
+export { popperGenerator, detectOverflow, createPopper as createPopperBase } from "./createPopper.js"; // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper } from "./popper.js"; // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper as createPopperLite } from "./popper-lite.js";
\ No newline at end of file
diff --git a/popperjs/package/lib/index.js.flow b/popperjs/package/lib/index.js.flow
new file mode 100644
index 0000000..86b2ac2
--- /dev/null
+++ b/popperjs/package/lib/index.js.flow
@@ -0,0 +1,13 @@
+// @flow
+export type * from './types';
+export * from './enums';
+export * from './modifiers';
+
+// eslint-disable-next-line import/no-unused-modules
+export { popperGenerator, detectOverflow, createPopper as createPopperBase } from './createPopper';
+
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper } from './popper';
+
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper as createPopperLite } from './popper-lite';
diff --git a/popperjs/package/lib/modifiers/applyStyles.d.ts b/popperjs/package/lib/modifiers/applyStyles.d.ts
new file mode 100644
index 0000000..317306f
--- /dev/null
+++ b/popperjs/package/lib/modifiers/applyStyles.d.ts
@@ -0,0 +1,4 @@
+import type { Modifier } from "../types";
+export declare type ApplyStylesModifier = Modifier<"applyStyles", {}>;
+declare const _default: ApplyStylesModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/applyStyles.js b/popperjs/package/lib/modifiers/applyStyles.js
new file mode 100644
index 0000000..84ac4ba
--- /dev/null
+++ b/popperjs/package/lib/modifiers/applyStyles.js
@@ -0,0 +1,84 @@
+import getNodeName from "../dom-utils/getNodeName.js";
+import { isHTMLElement } from "../dom-utils/instanceOf.js"; // This modifier takes the styles prepared by the `computeStyles` modifier
+// and applies them to the HTMLElements such as popper and arrow
+
+function applyStyles(_ref) {
+  var state = _ref.state;
+  Object.keys(state.elements).forEach(function (name) {
+    var style = state.styles[name] || {};
+    var attributes = state.attributes[name] || {};
+    var element = state.elements[name]; // arrow is optional + virtual elements
+
+    if (!isHTMLElement(element) || !getNodeName(element)) {
+      return;
+    } // Flow doesn't support to extend this property, but it's the most
+    // effective way to apply styles to an HTMLElement
+    // $FlowFixMe[cannot-write]
+
+
+    Object.assign(element.style, style);
+    Object.keys(attributes).forEach(function (name) {
+      var value = attributes[name];
+
+      if (value === false) {
+        element.removeAttribute(name);
+      } else {
+        element.setAttribute(name, value === true ? '' : value);
+      }
+    });
+  });
+}
+
+function effect(_ref2) {
+  var state = _ref2.state;
+  var initialStyles = {
+    popper: {
+      position: state.options.strategy,
+      left: '0',
+      top: '0',
+      margin: '0'
+    },
+    arrow: {
+      position: 'absolute'
+    },
+    reference: {}
+  };
+  Object.assign(state.elements.popper.style, initialStyles.popper);
+  state.styles = initialStyles;
+
+  if (state.elements.arrow) {
+    Object.assign(state.elements.arrow.style, initialStyles.arrow);
+  }
+
+  return function () {
+    Object.keys(state.elements).forEach(function (name) {
+      var element = state.elements[name];
+      var attributes = state.attributes[name] || {};
+      var styleProperties = Object.keys(state.styles.hasOwnProperty(name) ? state.styles[name] : initialStyles[name]); // Set all values to an empty string to unset them
+
+      var style = styleProperties.reduce(function (style, property) {
+        style[property] = '';
+        return style;
+      }, {}); // arrow is optional + virtual elements
+
+      if (!isHTMLElement(element) || !getNodeName(element)) {
+        return;
+      }
+
+      Object.assign(element.style, style);
+      Object.keys(attributes).forEach(function (attribute) {
+        element.removeAttribute(attribute);
+      });
+    });
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'applyStyles',
+  enabled: true,
+  phase: 'write',
+  fn: applyStyles,
+  effect: effect,
+  requires: ['computeStyles']
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/applyStyles.js.flow b/popperjs/package/lib/modifiers/applyStyles.js.flow
new file mode 100644
index 0000000..e976cf0
--- /dev/null
+++ b/popperjs/package/lib/modifiers/applyStyles.js.flow
@@ -0,0 +1,98 @@
+// @flow
+import type { Modifier, ModifierArguments } from '../types';
+import getNodeName from '../dom-utils/getNodeName';
+import { isHTMLElement } from '../dom-utils/instanceOf';
+
+// This modifier takes the styles prepared by the `computeStyles` modifier
+// and applies them to the HTMLElements such as popper and arrow
+
+function applyStyles({ state }: ModifierArguments<{||}>) {
+  Object.keys(state.elements).forEach((name) => {
+    const style = state.styles[name] || {};
+
+    const attributes = state.attributes[name] || {};
+    const element = state.elements[name];
+
+    // arrow is optional + virtual elements
+    if (!isHTMLElement(element) || !getNodeName(element)) {
+      return;
+    }
+
+    // Flow doesn't support to extend this property, but it's the most
+    // effective way to apply styles to an HTMLElement
+    // $FlowFixMe[cannot-write]
+    Object.assign(element.style, style);
+
+    Object.keys(attributes).forEach((name) => {
+      const value = attributes[name];
+      if (value === false) {
+        element.removeAttribute(name);
+      } else {
+        element.setAttribute(name, value === true ? '' : value);
+      }
+    });
+  });
+}
+
+function effect({ state }: ModifierArguments<{||}>) {
+  const initialStyles = {
+    popper: {
+      position: state.options.strategy,
+      left: '0',
+      top: '0',
+      margin: '0',
+    },
+    arrow: {
+      position: 'absolute',
+    },
+    reference: {},
+  };
+
+  Object.assign(state.elements.popper.style, initialStyles.popper);
+  state.styles = initialStyles;
+
+  if (state.elements.arrow) {
+    Object.assign(state.elements.arrow.style, initialStyles.arrow);
+  }
+
+  return () => {
+    Object.keys(state.elements).forEach((name) => {
+      const element = state.elements[name];
+      const attributes = state.attributes[name] || {};
+
+      const styleProperties = Object.keys(
+        state.styles.hasOwnProperty(name)
+          ? state.styles[name]
+          : initialStyles[name]
+      );
+
+      // Set all values to an empty string to unset them
+      const style = styleProperties.reduce((style, property) => {
+        style[property] = '';
+        return style;
+      }, {});
+
+      // arrow is optional + virtual elements
+      if (!isHTMLElement(element) || !getNodeName(element)) {
+        return;
+      }
+
+      Object.assign(element.style, style);
+
+      Object.keys(attributes).forEach((attribute) => {
+        element.removeAttribute(attribute);
+      });
+    });
+  };
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type ApplyStylesModifier = Modifier<'applyStyles', {||}>;
+export default ({
+  name: 'applyStyles',
+  enabled: true,
+  phase: 'write',
+  fn: applyStyles,
+  effect,
+  requires: ['computeStyles'],
+}: ApplyStylesModifier);
diff --git a/popperjs/package/lib/modifiers/arrow.d.ts b/popperjs/package/lib/modifiers/arrow.d.ts
new file mode 100644
index 0000000..7112698
--- /dev/null
+++ b/popperjs/package/lib/modifiers/arrow.d.ts
@@ -0,0 +1,13 @@
+import type { Modifier, Padding, Rect } from "../types";
+import type { Placement } from "../enums";
+export declare type Options = {
+    element: HTMLElement | string | null;
+    padding: Padding | ((arg0: {
+        popper: Rect;
+        reference: Rect;
+        placement: Placement;
+    }) => Padding);
+};
+export declare type ArrowModifier = Modifier<"arrow", Options>;
+declare const _default: ArrowModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/arrow.js b/popperjs/package/lib/modifiers/arrow.js
new file mode 100644
index 0000000..d0001e2
--- /dev/null
+++ b/popperjs/package/lib/modifiers/arrow.js
@@ -0,0 +1,101 @@
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getLayoutRect from "../dom-utils/getLayoutRect.js";
+import contains from "../dom-utils/contains.js";
+import getOffsetParent from "../dom-utils/getOffsetParent.js";
+import getMainAxisFromPlacement from "../utils/getMainAxisFromPlacement.js";
+import { within } from "../utils/within.js";
+import mergePaddingObject from "../utils/mergePaddingObject.js";
+import expandToHashMap from "../utils/expandToHashMap.js";
+import { left, right, basePlacements, top, bottom } from "../enums.js";
+import { isHTMLElement } from "../dom-utils/instanceOf.js"; // eslint-disable-next-line import/no-unused-modules
+
+var toPaddingObject = function toPaddingObject(padding, state) {
+  padding = typeof padding === 'function' ? padding(Object.assign({}, state.rects, {
+    placement: state.placement
+  })) : padding;
+  return mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+};
+
+function arrow(_ref) {
+  var _state$modifiersData$;
+
+  var state = _ref.state,
+      name = _ref.name,
+      options = _ref.options;
+  var arrowElement = state.elements.arrow;
+  var popperOffsets = state.modifiersData.popperOffsets;
+  var basePlacement = getBasePlacement(state.placement);
+  var axis = getMainAxisFromPlacement(basePlacement);
+  var isVertical = [left, right].indexOf(basePlacement) >= 0;
+  var len = isVertical ? 'height' : 'width';
+
+  if (!arrowElement || !popperOffsets) {
+    return;
+  }
+
+  var paddingObject = toPaddingObject(options.padding, state);
+  var arrowRect = getLayoutRect(arrowElement);
+  var minProp = axis === 'y' ? top : left;
+  var maxProp = axis === 'y' ? bottom : right;
+  var endDiff = state.rects.reference[len] + state.rects.reference[axis] - popperOffsets[axis] - state.rects.popper[len];
+  var startDiff = popperOffsets[axis] - state.rects.reference[axis];
+  var arrowOffsetParent = getOffsetParent(arrowElement);
+  var clientSize = arrowOffsetParent ? axis === 'y' ? arrowOffsetParent.clientHeight || 0 : arrowOffsetParent.clientWidth || 0 : 0;
+  var centerToReference = endDiff / 2 - startDiff / 2; // Make sure the arrow doesn't overflow the popper if the center point is
+  // outside of the popper bounds
+
+  var min = paddingObject[minProp];
+  var max = clientSize - arrowRect[len] - paddingObject[maxProp];
+  var center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
+  var offset = within(min, center, max); // Prevents breaking syntax highlighting...
+
+  var axisProp = axis;
+  state.modifiersData[name] = (_state$modifiersData$ = {}, _state$modifiersData$[axisProp] = offset, _state$modifiersData$.centerOffset = offset - center, _state$modifiersData$);
+}
+
+function effect(_ref2) {
+  var state = _ref2.state,
+      options = _ref2.options;
+  var _options$element = options.element,
+      arrowElement = _options$element === void 0 ? '[data-popper-arrow]' : _options$element;
+
+  if (arrowElement == null) {
+    return;
+  } // CSS selector
+
+
+  if (typeof arrowElement === 'string') {
+    arrowElement = state.elements.popper.querySelector(arrowElement);
+
+    if (!arrowElement) {
+      return;
+    }
+  }
+
+  if (process.env.NODE_ENV !== "production") {
+    if (!isHTMLElement(arrowElement)) {
+      console.error(['Popper: "arrow" element must be an HTMLElement (not an SVGElement).', 'To use an SVG arrow, wrap it in an HTMLElement that will be used as', 'the arrow.'].join(' '));
+    }
+  }
+
+  if (!contains(state.elements.popper, arrowElement)) {
+    if (process.env.NODE_ENV !== "production") {
+      console.error(['Popper: "arrow" modifier\'s `element` must be a child of the popper', 'element.'].join(' '));
+    }
+
+    return;
+  }
+
+  state.elements.arrow = arrowElement;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'arrow',
+  enabled: true,
+  phase: 'main',
+  fn: arrow,
+  effect: effect,
+  requires: ['popperOffsets'],
+  requiresIfExists: ['preventOverflow']
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/arrow.js.flow b/popperjs/package/lib/modifiers/arrow.js.flow
new file mode 100644
index 0000000..03666f5
--- /dev/null
+++ b/popperjs/package/lib/modifiers/arrow.js.flow
@@ -0,0 +1,142 @@
+// @flow
+import type { Modifier, ModifierArguments, Padding, Rect } from '../types';
+import type { Placement } from '../enums';
+import getBasePlacement from '../utils/getBasePlacement';
+import getLayoutRect from '../dom-utils/getLayoutRect';
+import contains from '../dom-utils/contains';
+import getOffsetParent from '../dom-utils/getOffsetParent';
+import getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';
+import { within } from '../utils/within';
+import mergePaddingObject from '../utils/mergePaddingObject';
+import expandToHashMap from '../utils/expandToHashMap';
+import { left, right, basePlacements, top, bottom } from '../enums';
+import { isHTMLElement } from '../dom-utils/instanceOf';
+
+// eslint-disable-next-line import/no-unused-modules
+export type Options = {
+  element: HTMLElement | string | null,
+  padding:
+    | Padding
+    | (({|
+        popper: Rect,
+        reference: Rect,
+        placement: Placement,
+      |}) => Padding),
+};
+
+const toPaddingObject = (padding, state) => {
+  padding =
+    typeof padding === 'function'
+      ? padding({ ...state.rects, placement: state.placement })
+      : padding;
+
+  return mergePaddingObject(
+    typeof padding !== 'number'
+      ? padding
+      : expandToHashMap(padding, basePlacements)
+  );
+};
+
+function arrow({ state, name, options }: ModifierArguments<Options>) {
+  const arrowElement = state.elements.arrow;
+  const popperOffsets = state.modifiersData.popperOffsets;
+  const basePlacement = getBasePlacement(state.placement);
+  const axis = getMainAxisFromPlacement(basePlacement);
+  const isVertical = [left, right].indexOf(basePlacement) >= 0;
+  const len = isVertical ? 'height' : 'width';
+
+  if (!arrowElement || !popperOffsets) {
+    return;
+  }
+
+  const paddingObject = toPaddingObject(options.padding, state);
+  const arrowRect = getLayoutRect(arrowElement);
+  const minProp = axis === 'y' ? top : left;
+  const maxProp = axis === 'y' ? bottom : right;
+
+  const endDiff =
+    state.rects.reference[len] +
+    state.rects.reference[axis] -
+    popperOffsets[axis] -
+    state.rects.popper[len];
+  const startDiff = popperOffsets[axis] - state.rects.reference[axis];
+
+  const arrowOffsetParent = getOffsetParent(arrowElement);
+  const clientSize = arrowOffsetParent
+    ? axis === 'y'
+      ? arrowOffsetParent.clientHeight || 0
+      : arrowOffsetParent.clientWidth || 0
+    : 0;
+
+  const centerToReference = endDiff / 2 - startDiff / 2;
+
+  // Make sure the arrow doesn't overflow the popper if the center point is
+  // outside of the popper bounds
+  const min = paddingObject[minProp];
+  const max = clientSize - arrowRect[len] - paddingObject[maxProp];
+  const center = clientSize / 2 - arrowRect[len] / 2 + centerToReference;
+  const offset = within(min, center, max);
+
+  // Prevents breaking syntax highlighting...
+  const axisProp: string = axis;
+  state.modifiersData[name] = {
+    [axisProp]: offset,
+    centerOffset: offset - center,
+  };
+}
+
+function effect({ state, options }: ModifierArguments<Options>) {
+  let { element: arrowElement = '[data-popper-arrow]' } = options;
+
+  if (arrowElement == null) {
+    return;
+  }
+
+  // CSS selector
+  if (typeof arrowElement === 'string') {
+    arrowElement = state.elements.popper.querySelector(arrowElement);
+
+    if (!arrowElement) {
+      return;
+    }
+  }
+
+  if (false) {
+    if (!isHTMLElement(arrowElement)) {
+      console.error(
+        [
+          'Popper: "arrow" element must be an HTMLElement (not an SVGElement).',
+          'To use an SVG arrow, wrap it in an HTMLElement that will be used as',
+          'the arrow.',
+        ].join(' ')
+      );
+    }
+  }
+
+  if (!contains(state.elements.popper, arrowElement)) {
+    if (false) {
+      console.error(
+        [
+          'Popper: "arrow" modifier\'s `element` must be a child of the popper',
+          'element.',
+        ].join(' ')
+      );
+    }
+
+    return;
+  }
+
+  state.elements.arrow = arrowElement;
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type ArrowModifier = Modifier<'arrow', Options>;
+export default ({
+  name: 'arrow',
+  enabled: true,
+  phase: 'main',
+  fn: arrow,
+  effect,
+  requires: ['popperOffsets'],
+  requiresIfExists: ['preventOverflow'],
+}: ArrowModifier);
diff --git a/popperjs/package/lib/modifiers/computeStyles.d.ts b/popperjs/package/lib/modifiers/computeStyles.d.ts
new file mode 100644
index 0000000..30394b5
--- /dev/null
+++ b/popperjs/package/lib/modifiers/computeStyles.d.ts
@@ -0,0 +1,38 @@
+import type { PositioningStrategy, Offsets, Modifier, Rect } from "../types";
+import { BasePlacement, Variation } from "../enums";
+export declare type RoundOffsets = (offsets: Partial<{
+    x: number;
+    y: number;
+    centerOffset: number;
+}>) => Offsets;
+export declare type Options = {
+    gpuAcceleration: boolean;
+    adaptive: boolean;
+    roundOffsets?: boolean | RoundOffsets;
+};
+export declare function mapToStyles({ popper, popperRect, placement, variation, offsets, position, gpuAcceleration, adaptive, roundOffsets, isFixed }: {
+    popper: HTMLElement;
+    popperRect: Rect;
+    placement: BasePlacement;
+    variation: Variation | null | undefined;
+    offsets: Partial<{
+        x: number;
+        y: number;
+        centerOffset: number;
+    }>;
+    position: PositioningStrategy;
+    gpuAcceleration: boolean;
+    adaptive: boolean;
+    roundOffsets: boolean | RoundOffsets;
+    isFixed: boolean;
+}): {
+    transform: string;
+    top: string;
+    right: string;
+    bottom: string;
+    left: string;
+    position: PositioningStrategy;
+};
+export declare type ComputeStylesModifier = Modifier<"computeStyles", Options>;
+declare const _default: ComputeStylesModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/computeStyles.js b/popperjs/package/lib/modifiers/computeStyles.js
new file mode 100644
index 0000000..6522eea
--- /dev/null
+++ b/popperjs/package/lib/modifiers/computeStyles.js
@@ -0,0 +1,162 @@
+import { top, left, right, bottom, end } from "../enums.js";
+import getOffsetParent from "../dom-utils/getOffsetParent.js";
+import getWindow from "../dom-utils/getWindow.js";
+import getDocumentElement from "../dom-utils/getDocumentElement.js";
+import getComputedStyle from "../dom-utils/getComputedStyle.js";
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getVariation from "../utils/getVariation.js";
+import { round } from "../utils/math.js"; // eslint-disable-next-line import/no-unused-modules
+
+var unsetSides = {
+  top: 'auto',
+  right: 'auto',
+  bottom: 'auto',
+  left: 'auto'
+}; // Round the offsets to the nearest suitable subpixel based on the DPR.
+// Zooming can change the DPR, but it seems to report a value that will
+// cleanly divide the values into the appropriate subpixels.
+
+function roundOffsetsByDPR(_ref) {
+  var x = _ref.x,
+      y = _ref.y;
+  var win = window;
+  var dpr = win.devicePixelRatio || 1;
+  return {
+    x: round(x * dpr) / dpr || 0,
+    y: round(y * dpr) / dpr || 0
+  };
+}
+
+export function mapToStyles(_ref2) {
+  var _Object$assign2;
+
+  var popper = _ref2.popper,
+      popperRect = _ref2.popperRect,
+      placement = _ref2.placement,
+      variation = _ref2.variation,
+      offsets = _ref2.offsets,
+      position = _ref2.position,
+      gpuAcceleration = _ref2.gpuAcceleration,
+      adaptive = _ref2.adaptive,
+      roundOffsets = _ref2.roundOffsets,
+      isFixed = _ref2.isFixed;
+
+  var _ref3 = roundOffsets === true ? roundOffsetsByDPR(offsets) : typeof roundOffsets === 'function' ? roundOffsets(offsets) : offsets,
+      _ref3$x = _ref3.x,
+      x = _ref3$x === void 0 ? 0 : _ref3$x,
+      _ref3$y = _ref3.y,
+      y = _ref3$y === void 0 ? 0 : _ref3$y;
+
+  var hasX = offsets.hasOwnProperty('x');
+  var hasY = offsets.hasOwnProperty('y');
+  var sideX = left;
+  var sideY = top;
+  var win = window;
+
+  if (adaptive) {
+    var offsetParent = getOffsetParent(popper);
+    var heightProp = 'clientHeight';
+    var widthProp = 'clientWidth';
+
+    if (offsetParent === getWindow(popper)) {
+      offsetParent = getDocumentElement(popper);
+
+      if (getComputedStyle(offsetParent).position !== 'static' && position === 'absolute') {
+        heightProp = 'scrollHeight';
+        widthProp = 'scrollWidth';
+      }
+    } // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+
+
+    offsetParent = offsetParent;
+
+    if (placement === top || (placement === left || placement === right) && variation === end) {
+      sideY = bottom;
+      var offsetY = isFixed && win.visualViewport ? win.visualViewport.height : // $FlowFixMe[prop-missing]
+      offsetParent[heightProp];
+      y -= offsetY - popperRect.height;
+      y *= gpuAcceleration ? 1 : -1;
+    }
+
+    if (placement === left || (placement === top || placement === bottom) && variation === end) {
+      sideX = right;
+      var offsetX = isFixed && win.visualViewport ? win.visualViewport.width : // $FlowFixMe[prop-missing]
+      offsetParent[widthProp];
+      x -= offsetX - popperRect.width;
+      x *= gpuAcceleration ? 1 : -1;
+    }
+  }
+
+  var commonStyles = Object.assign({
+    position: position
+  }, adaptive && unsetSides);
+
+  if (gpuAcceleration) {
+    var _Object$assign;
+
+    return Object.assign({}, commonStyles, (_Object$assign = {}, _Object$assign[sideY] = hasY ? '0' : '', _Object$assign[sideX] = hasX ? '0' : '', _Object$assign.transform = (win.devicePixelRatio || 1) <= 1 ? "translate(" + x + "px, " + y + "px)" : "translate3d(" + x + "px, " + y + "px, 0)", _Object$assign));
+  }
+
+  return Object.assign({}, commonStyles, (_Object$assign2 = {}, _Object$assign2[sideY] = hasY ? y + "px" : '', _Object$assign2[sideX] = hasX ? x + "px" : '', _Object$assign2.transform = '', _Object$assign2));
+}
+
+function computeStyles(_ref4) {
+  var state = _ref4.state,
+      options = _ref4.options;
+  var _options$gpuAccelerat = options.gpuAcceleration,
+      gpuAcceleration = _options$gpuAccelerat === void 0 ? true : _options$gpuAccelerat,
+      _options$adaptive = options.adaptive,
+      adaptive = _options$adaptive === void 0 ? true : _options$adaptive,
+      _options$roundOffsets = options.roundOffsets,
+      roundOffsets = _options$roundOffsets === void 0 ? true : _options$roundOffsets;
+
+  if (process.env.NODE_ENV !== "production") {
+    var transitionProperty = getComputedStyle(state.elements.popper).transitionProperty || '';
+
+    if (adaptive && ['transform', 'top', 'right', 'bottom', 'left'].some(function (property) {
+      return transitionProperty.indexOf(property) >= 0;
+    })) {
+      console.warn(['Popper: Detected CSS transitions on at least one of the following', 'CSS properties: "transform", "top", "right", "bottom", "left".', '\n\n', 'Disable the "computeStyles" modifier\'s `adaptive` option to allow', 'for smooth transitions, or remove these properties from the CSS', 'transition declaration on the popper element if only transitioning', 'opacity or background-color for example.', '\n\n', 'We recommend using the popper element as a wrapper around an inner', 'element that can have any CSS property transitioned for animations.'].join(' '));
+    }
+  }
+
+  var commonStyles = {
+    placement: getBasePlacement(state.placement),
+    variation: getVariation(state.placement),
+    popper: state.elements.popper,
+    popperRect: state.rects.popper,
+    gpuAcceleration: gpuAcceleration,
+    isFixed: state.options.strategy === 'fixed'
+  };
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.styles.popper = Object.assign({}, state.styles.popper, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.popperOffsets,
+      position: state.options.strategy,
+      adaptive: adaptive,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  if (state.modifiersData.arrow != null) {
+    state.styles.arrow = Object.assign({}, state.styles.arrow, mapToStyles(Object.assign({}, commonStyles, {
+      offsets: state.modifiersData.arrow,
+      position: 'absolute',
+      adaptive: false,
+      roundOffsets: roundOffsets
+    })));
+  }
+
+  state.attributes.popper = Object.assign({}, state.attributes.popper, {
+    'data-popper-placement': state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'computeStyles',
+  enabled: true,
+  phase: 'beforeWrite',
+  fn: computeStyles,
+  data: {}
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/computeStyles.js.flow b/popperjs/package/lib/modifiers/computeStyles.js.flow
new file mode 100644
index 0000000..d6f5f23
--- /dev/null
+++ b/popperjs/package/lib/modifiers/computeStyles.js.flow
@@ -0,0 +1,258 @@
+// @flow
+import type {
+  PositioningStrategy,
+  Offsets,
+  Modifier,
+  ModifierArguments,
+  Rect,
+  Window,
+} from '../types';
+import {
+  type BasePlacement,
+  type Variation,
+  top,
+  left,
+  right,
+  bottom,
+  end,
+} from '../enums';
+import getOffsetParent from '../dom-utils/getOffsetParent';
+import getWindow from '../dom-utils/getWindow';
+import getDocumentElement from '../dom-utils/getDocumentElement';
+import getComputedStyle from '../dom-utils/getComputedStyle';
+import getBasePlacement from '../utils/getBasePlacement';
+import getVariation from '../utils/getVariation';
+import { round } from '../utils/math';
+
+// eslint-disable-next-line import/no-unused-modules
+export type RoundOffsets = (
+  offsets: $Shape<{ x: number, y: number, centerOffset: number }>
+) => Offsets;
+
+// eslint-disable-next-line import/no-unused-modules
+export type Options = {
+  gpuAcceleration: boolean,
+  adaptive: boolean,
+  roundOffsets?: boolean | RoundOffsets,
+};
+
+const unsetSides = {
+  top: 'auto',
+  right: 'auto',
+  bottom: 'auto',
+  left: 'auto',
+};
+
+// Round the offsets to the nearest suitable subpixel based on the DPR.
+// Zooming can change the DPR, but it seems to report a value that will
+// cleanly divide the values into the appropriate subpixels.
+function roundOffsetsByDPR({ x, y }): Offsets {
+  const win: Window = window;
+  const dpr = win.devicePixelRatio || 1;
+
+  return {
+    x: round(x * dpr) / dpr || 0,
+    y: round(y * dpr) / dpr || 0,
+  };
+}
+
+export function mapToStyles({
+  popper,
+  popperRect,
+  placement,
+  variation,
+  offsets,
+  position,
+  gpuAcceleration,
+  adaptive,
+  roundOffsets,
+  isFixed,
+}: {
+  popper: HTMLElement,
+  popperRect: Rect,
+  placement: BasePlacement,
+  variation: ?Variation,
+  offsets: $Shape<{ x: number, y: number, centerOffset: number }>,
+  position: PositioningStrategy,
+  gpuAcceleration: boolean,
+  adaptive: boolean,
+  roundOffsets: boolean | RoundOffsets,
+  isFixed: boolean,
+}) {
+  let { x = 0, y = 0 } =
+    roundOffsets === true
+      ? roundOffsetsByDPR(offsets)
+      : typeof roundOffsets === 'function'
+      ? roundOffsets(offsets)
+      : offsets;
+
+  const hasX = offsets.hasOwnProperty('x');
+  const hasY = offsets.hasOwnProperty('y');
+
+  let sideX: string = left;
+  let sideY: string = top;
+
+  const win: Window = window;
+
+  if (adaptive) {
+    let offsetParent = getOffsetParent(popper);
+    let heightProp = 'clientHeight';
+    let widthProp = 'clientWidth';
+
+    if (offsetParent === getWindow(popper)) {
+      offsetParent = getDocumentElement(popper);
+
+      if (
+        getComputedStyle(offsetParent).position !== 'static' &&
+        position === 'absolute'
+      ) {
+        heightProp = 'scrollHeight';
+        widthProp = 'scrollWidth';
+      }
+    }
+
+    // $FlowFixMe[incompatible-cast]: force type refinement, we compare offsetParent with window above, but Flow doesn't detect it
+    offsetParent = (offsetParent: Element);
+
+    if (
+      placement === top ||
+      ((placement === left || placement === right) && variation === end)
+    ) {
+      sideY = bottom;
+      const offsetY =
+        isFixed && win.visualViewport
+          ? win.visualViewport.height
+          : // $FlowFixMe[prop-missing]
+            offsetParent[heightProp];
+      y -= offsetY - popperRect.height;
+      y *= gpuAcceleration ? 1 : -1;
+    }
+
+    if (
+      placement === left ||
+      ((placement === top || placement === bottom) && variation === end)
+    ) {
+      sideX = right;
+      const offsetX =
+        isFixed && win.visualViewport
+          ? win.visualViewport.width
+          : // $FlowFixMe[prop-missing]
+            offsetParent[widthProp];
+      x -= offsetX - popperRect.width;
+      x *= gpuAcceleration ? 1 : -1;
+    }
+  }
+
+  const commonStyles = {
+    position,
+    ...(adaptive && unsetSides),
+  };
+
+  if (gpuAcceleration) {
+    return {
+      ...commonStyles,
+      [sideY]: hasY ? '0' : '',
+      [sideX]: hasX ? '0' : '',
+      // Layer acceleration can disable subpixel rendering which causes slightly
+      // blurry text on low PPI displays, so we want to use 2D transforms
+      // instead
+      transform:
+        (win.devicePixelRatio || 1) <= 1
+          ? `translate(${x}px, ${y}px)`
+          : `translate3d(${x}px, ${y}px, 0)`,
+    };
+  }
+
+  return {
+    ...commonStyles,
+    [sideY]: hasY ? `${y}px` : '',
+    [sideX]: hasX ? `${x}px` : '',
+    transform: '',
+  };
+}
+
+function computeStyles({ state, options }: ModifierArguments<Options>) {
+  const {
+    gpuAcceleration = true,
+    adaptive = true,
+    // defaults to use builtin `roundOffsetsByDPR`
+    roundOffsets = true,
+  } = options;
+
+  if (false) {
+    const transitionProperty =
+      getComputedStyle(state.elements.popper).transitionProperty || '';
+
+    if (
+      adaptive &&
+      ['transform', 'top', 'right', 'bottom', 'left'].some(
+        (property) => transitionProperty.indexOf(property) >= 0
+      )
+    ) {
+      console.warn(
+        [
+          'Popper: Detected CSS transitions on at least one of the following',
+          'CSS properties: "transform", "top", "right", "bottom", "left".',
+          '\n\n',
+          'Disable the "computeStyles" modifier\'s `adaptive` option to allow',
+          'for smooth transitions, or remove these properties from the CSS',
+          'transition declaration on the popper element if only transitioning',
+          'opacity or background-color for example.',
+          '\n\n',
+          'We recommend using the popper element as a wrapper around an inner',
+          'element that can have any CSS property transitioned for animations.',
+        ].join(' ')
+      );
+    }
+  }
+
+  const commonStyles = {
+    placement: getBasePlacement(state.placement),
+    variation: getVariation(state.placement),
+    popper: state.elements.popper,
+    popperRect: state.rects.popper,
+    gpuAcceleration,
+    isFixed: state.options.strategy === 'fixed',
+  };
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.styles.popper = {
+      ...state.styles.popper,
+      ...mapToStyles({
+        ...commonStyles,
+        offsets: state.modifiersData.popperOffsets,
+        position: state.options.strategy,
+        adaptive,
+        roundOffsets,
+      }),
+    };
+  }
+
+  if (state.modifiersData.arrow != null) {
+    state.styles.arrow = {
+      ...state.styles.arrow,
+      ...mapToStyles({
+        ...commonStyles,
+        offsets: state.modifiersData.arrow,
+        position: 'absolute',
+        adaptive: false,
+        roundOffsets,
+      }),
+    };
+  }
+
+  state.attributes.popper = {
+    ...state.attributes.popper,
+    'data-popper-placement': state.placement,
+  };
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type ComputeStylesModifier = Modifier<'computeStyles', Options>;
+export default ({
+  name: 'computeStyles',
+  enabled: true,
+  phase: 'beforeWrite',
+  fn: computeStyles,
+  data: {},
+}: ComputeStylesModifier);
diff --git a/popperjs/package/lib/modifiers/eventListeners.d.ts b/popperjs/package/lib/modifiers/eventListeners.d.ts
new file mode 100644
index 0000000..077a7fb
--- /dev/null
+++ b/popperjs/package/lib/modifiers/eventListeners.d.ts
@@ -0,0 +1,8 @@
+import type { Modifier } from "../types";
+export declare type Options = {
+    scroll: boolean;
+    resize: boolean;
+};
+export declare type EventListenersModifier = Modifier<"eventListeners", Options>;
+declare const _default: EventListenersModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/eventListeners.js b/popperjs/package/lib/modifiers/eventListeners.js
new file mode 100644
index 0000000..bc68f35
--- /dev/null
+++ b/popperjs/package/lib/modifiers/eventListeners.js
@@ -0,0 +1,49 @@
+import getWindow from "../dom-utils/getWindow.js"; // eslint-disable-next-line import/no-unused-modules
+
+var passive = {
+  passive: true
+};
+
+function effect(_ref) {
+  var state = _ref.state,
+      instance = _ref.instance,
+      options = _ref.options;
+  var _options$scroll = options.scroll,
+      scroll = _options$scroll === void 0 ? true : _options$scroll,
+      _options$resize = options.resize,
+      resize = _options$resize === void 0 ? true : _options$resize;
+  var window = getWindow(state.elements.popper);
+  var scrollParents = [].concat(state.scrollParents.reference, state.scrollParents.popper);
+
+  if (scroll) {
+    scrollParents.forEach(function (scrollParent) {
+      scrollParent.addEventListener('scroll', instance.update, passive);
+    });
+  }
+
+  if (resize) {
+    window.addEventListener('resize', instance.update, passive);
+  }
+
+  return function () {
+    if (scroll) {
+      scrollParents.forEach(function (scrollParent) {
+        scrollParent.removeEventListener('scroll', instance.update, passive);
+      });
+    }
+
+    if (resize) {
+      window.removeEventListener('resize', instance.update, passive);
+    }
+  };
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'eventListeners',
+  enabled: true,
+  phase: 'write',
+  fn: function fn() {},
+  effect: effect,
+  data: {}
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/eventListeners.js.flow b/popperjs/package/lib/modifiers/eventListeners.js.flow
new file mode 100644
index 0000000..eab18a5
--- /dev/null
+++ b/popperjs/package/lib/modifiers/eventListeners.js.flow
@@ -0,0 +1,54 @@
+// @flow
+import type { ModifierArguments, Modifier } from '../types';
+import getWindow from '../dom-utils/getWindow';
+
+// eslint-disable-next-line import/no-unused-modules
+export type Options = {
+  scroll: boolean,
+  resize: boolean,
+};
+
+const passive = { passive: true };
+
+function effect({ state, instance, options }: ModifierArguments<Options>) {
+  const { scroll = true, resize = true } = options;
+
+  const window = getWindow(state.elements.popper);
+  const scrollParents = [
+    ...state.scrollParents.reference,
+    ...state.scrollParents.popper,
+  ];
+
+  if (scroll) {
+    scrollParents.forEach(scrollParent => {
+      scrollParent.addEventListener('scroll', instance.update, passive);
+    });
+  }
+
+  if (resize) {
+    window.addEventListener('resize', instance.update, passive);
+  }
+
+  return () => {
+    if (scroll) {
+      scrollParents.forEach(scrollParent => {
+        scrollParent.removeEventListener('scroll', instance.update, passive);
+      });
+    }
+
+    if (resize) {
+      window.removeEventListener('resize', instance.update, passive);
+    }
+  };
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type EventListenersModifier = Modifier<'eventListeners', Options>;
+export default ({
+  name: 'eventListeners',
+  enabled: true,
+  phase: 'write',
+  fn: () => {},
+  effect,
+  data: {},
+}: EventListenersModifier);
diff --git a/popperjs/package/lib/modifiers/flip.d.ts b/popperjs/package/lib/modifiers/flip.d.ts
new file mode 100644
index 0000000..0115798
--- /dev/null
+++ b/popperjs/package/lib/modifiers/flip.d.ts
@@ -0,0 +1,16 @@
+import type { Placement, Boundary, RootBoundary } from "../enums";
+import type { Modifier, Padding } from "../types";
+export declare type Options = {
+    mainAxis: boolean;
+    altAxis: boolean;
+    fallbackPlacements: Array<Placement>;
+    padding: Padding;
+    boundary: Boundary;
+    rootBoundary: RootBoundary;
+    altBoundary: boolean;
+    flipVariations: boolean;
+    allowedAutoPlacements: Array<Placement>;
+};
+export declare type FlipModifier = Modifier<"flip", Options>;
+declare const _default: FlipModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/flip.js b/popperjs/package/lib/modifiers/flip.js
new file mode 100644
index 0000000..2c33216
--- /dev/null
+++ b/popperjs/package/lib/modifiers/flip.js
@@ -0,0 +1,147 @@
+import getOppositePlacement from "../utils/getOppositePlacement.js";
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getOppositeVariationPlacement from "../utils/getOppositeVariationPlacement.js";
+import detectOverflow from "../utils/detectOverflow.js";
+import computeAutoPlacement from "../utils/computeAutoPlacement.js";
+import { bottom, top, start, right, left, auto } from "../enums.js";
+import getVariation from "../utils/getVariation.js"; // eslint-disable-next-line import/no-unused-modules
+
+function getExpandedFallbackPlacements(placement) {
+  if (getBasePlacement(placement) === auto) {
+    return [];
+  }
+
+  var oppositePlacement = getOppositePlacement(placement);
+  return [getOppositeVariationPlacement(placement), oppositePlacement, getOppositeVariationPlacement(oppositePlacement)];
+}
+
+function flip(_ref) {
+  var state = _ref.state,
+      options = _ref.options,
+      name = _ref.name;
+
+  if (state.modifiersData[name]._skip) {
+    return;
+  }
+
+  var _options$mainAxis = options.mainAxis,
+      checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+      _options$altAxis = options.altAxis,
+      checkAltAxis = _options$altAxis === void 0 ? true : _options$altAxis,
+      specifiedFallbackPlacements = options.fallbackPlacements,
+      padding = options.padding,
+      boundary = options.boundary,
+      rootBoundary = options.rootBoundary,
+      altBoundary = options.altBoundary,
+      _options$flipVariatio = options.flipVariations,
+      flipVariations = _options$flipVariatio === void 0 ? true : _options$flipVariatio,
+      allowedAutoPlacements = options.allowedAutoPlacements;
+  var preferredPlacement = state.options.placement;
+  var basePlacement = getBasePlacement(preferredPlacement);
+  var isBasePlacement = basePlacement === preferredPlacement;
+  var fallbackPlacements = specifiedFallbackPlacements || (isBasePlacement || !flipVariations ? [getOppositePlacement(preferredPlacement)] : getExpandedFallbackPlacements(preferredPlacement));
+  var placements = [preferredPlacement].concat(fallbackPlacements).reduce(function (acc, placement) {
+    return acc.concat(getBasePlacement(placement) === auto ? computeAutoPlacement(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      padding: padding,
+      flipVariations: flipVariations,
+      allowedAutoPlacements: allowedAutoPlacements
+    }) : placement);
+  }, []);
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var checksMap = new Map();
+  var makeFallbackChecks = true;
+  var firstFittingPlacement = placements[0];
+
+  for (var i = 0; i < placements.length; i++) {
+    var placement = placements[i];
+
+    var _basePlacement = getBasePlacement(placement);
+
+    var isStartVariation = getVariation(placement) === start;
+    var isVertical = [top, bottom].indexOf(_basePlacement) >= 0;
+    var len = isVertical ? 'width' : 'height';
+    var overflow = detectOverflow(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      altBoundary: altBoundary,
+      padding: padding
+    });
+    var mainVariationSide = isVertical ? isStartVariation ? right : left : isStartVariation ? bottom : top;
+
+    if (referenceRect[len] > popperRect[len]) {
+      mainVariationSide = getOppositePlacement(mainVariationSide);
+    }
+
+    var altVariationSide = getOppositePlacement(mainVariationSide);
+    var checks = [];
+
+    if (checkMainAxis) {
+      checks.push(overflow[_basePlacement] <= 0);
+    }
+
+    if (checkAltAxis) {
+      checks.push(overflow[mainVariationSide] <= 0, overflow[altVariationSide] <= 0);
+    }
+
+    if (checks.every(function (check) {
+      return check;
+    })) {
+      firstFittingPlacement = placement;
+      makeFallbackChecks = false;
+      break;
+    }
+
+    checksMap.set(placement, checks);
+  }
+
+  if (makeFallbackChecks) {
+    // `2` may be desired in some cases – research later
+    var numberOfChecks = flipVariations ? 3 : 1;
+
+    var _loop = function _loop(_i) {
+      var fittingPlacement = placements.find(function (placement) {
+        var checks = checksMap.get(placement);
+
+        if (checks) {
+          return checks.slice(0, _i).every(function (check) {
+            return check;
+          });
+        }
+      });
+
+      if (fittingPlacement) {
+        firstFittingPlacement = fittingPlacement;
+        return "break";
+      }
+    };
+
+    for (var _i = numberOfChecks; _i > 0; _i--) {
+      var _ret = _loop(_i);
+
+      if (_ret === "break") break;
+    }
+  }
+
+  if (state.placement !== firstFittingPlacement) {
+    state.modifiersData[name]._skip = true;
+    state.placement = firstFittingPlacement;
+    state.reset = true;
+  }
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'flip',
+  enabled: true,
+  phase: 'main',
+  fn: flip,
+  requiresIfExists: ['offset'],
+  data: {
+    _skip: false
+  }
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/flip.js.flow b/popperjs/package/lib/modifiers/flip.js.flow
new file mode 100644
index 0000000..c74b852
--- /dev/null
+++ b/popperjs/package/lib/modifiers/flip.js.flow
@@ -0,0 +1,177 @@
+// @flow
+import type { Placement, Boundary, RootBoundary } from '../enums';
+import type { ModifierArguments, Modifier, Padding } from '../types';
+import getOppositePlacement from '../utils/getOppositePlacement';
+import getBasePlacement from '../utils/getBasePlacement';
+import getOppositeVariationPlacement from '../utils/getOppositeVariationPlacement';
+import detectOverflow from '../utils/detectOverflow';
+import computeAutoPlacement from '../utils/computeAutoPlacement';
+import { bottom, top, start, right, left, auto } from '../enums';
+import getVariation from '../utils/getVariation';
+
+// eslint-disable-next-line import/no-unused-modules
+export type Options = {
+  mainAxis: boolean,
+  altAxis: boolean,
+  fallbackPlacements: Array<Placement>,
+  padding: Padding,
+  boundary: Boundary,
+  rootBoundary: RootBoundary,
+  altBoundary: boolean,
+  flipVariations: boolean,
+  allowedAutoPlacements: Array<Placement>,
+};
+
+function getExpandedFallbackPlacements(placement: Placement): Array<Placement> {
+  if (getBasePlacement(placement) === auto) {
+    return [];
+  }
+
+  const oppositePlacement = getOppositePlacement(placement);
+
+  return [
+    getOppositeVariationPlacement(placement),
+    oppositePlacement,
+    getOppositeVariationPlacement(oppositePlacement),
+  ];
+}
+
+function flip({ state, options, name }: ModifierArguments<Options>) {
+  if (state.modifiersData[name]._skip) {
+    return;
+  }
+
+  const {
+    mainAxis: checkMainAxis = true,
+    altAxis: checkAltAxis = true,
+    fallbackPlacements: specifiedFallbackPlacements,
+    padding,
+    boundary,
+    rootBoundary,
+    altBoundary,
+    flipVariations = true,
+    allowedAutoPlacements,
+  } = options;
+
+  const preferredPlacement = state.options.placement;
+  const basePlacement = getBasePlacement(preferredPlacement);
+  const isBasePlacement = basePlacement === preferredPlacement;
+
+  const fallbackPlacements =
+    specifiedFallbackPlacements ||
+    (isBasePlacement || !flipVariations
+      ? [getOppositePlacement(preferredPlacement)]
+      : getExpandedFallbackPlacements(preferredPlacement));
+
+  const placements = [preferredPlacement, ...fallbackPlacements].reduce(
+    (acc, placement) => {
+      return acc.concat(
+        getBasePlacement(placement) === auto
+          ? computeAutoPlacement(state, {
+              placement,
+              boundary,
+              rootBoundary,
+              padding,
+              flipVariations,
+              allowedAutoPlacements,
+            })
+          : placement
+      );
+    },
+    []
+  );
+
+  const referenceRect = state.rects.reference;
+  const popperRect = state.rects.popper;
+
+  const checksMap = new Map();
+  let makeFallbackChecks = true;
+  let firstFittingPlacement = placements[0];
+
+  for (let i = 0; i < placements.length; i++) {
+    const placement = placements[i];
+    const basePlacement = getBasePlacement(placement);
+    const isStartVariation = getVariation(placement) === start;
+    const isVertical = [top, bottom].indexOf(basePlacement) >= 0;
+    const len = isVertical ? 'width' : 'height';
+
+    const overflow = detectOverflow(state, {
+      placement,
+      boundary,
+      rootBoundary,
+      altBoundary,
+      padding,
+    });
+
+    let mainVariationSide: any = isVertical
+      ? isStartVariation
+        ? right
+        : left
+      : isStartVariation
+      ? bottom
+      : top;
+
+    if (referenceRect[len] > popperRect[len]) {
+      mainVariationSide = getOppositePlacement(mainVariationSide);
+    }
+
+    const altVariationSide: any = getOppositePlacement(mainVariationSide);
+
+    const checks = [];
+
+    if (checkMainAxis) {
+      checks.push(overflow[basePlacement] <= 0);
+    }
+
+    if (checkAltAxis) {
+      checks.push(
+        overflow[mainVariationSide] <= 0,
+        overflow[altVariationSide] <= 0
+      );
+    }
+
+    if (checks.every((check) => check)) {
+      firstFittingPlacement = placement;
+      makeFallbackChecks = false;
+      break;
+    }
+
+    checksMap.set(placement, checks);
+  }
+
+  if (makeFallbackChecks) {
+    // `2` may be desired in some cases – research later
+    const numberOfChecks = flipVariations ? 3 : 1;
+
+    for (let i = numberOfChecks; i > 0; i--) {
+      const fittingPlacement = placements.find((placement) => {
+        const checks = checksMap.get(placement);
+        if (checks) {
+          return checks.slice(0, i).every((check) => check);
+        }
+      });
+
+      if (fittingPlacement) {
+        firstFittingPlacement = fittingPlacement;
+        break;
+      }
+    }
+  }
+
+  if (state.placement !== firstFittingPlacement) {
+    state.modifiersData[name]._skip = true;
+    state.placement = firstFittingPlacement;
+    state.reset = true;
+  }
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type FlipModifier = Modifier<'flip', Options>;
+export default ({
+  name: 'flip',
+  enabled: true,
+  phase: 'main',
+  fn: flip,
+  requiresIfExists: ['offset'],
+  data: { _skip: false },
+}: FlipModifier);
diff --git a/popperjs/package/lib/modifiers/hide.d.ts b/popperjs/package/lib/modifiers/hide.d.ts
new file mode 100644
index 0000000..2d2f2e1
--- /dev/null
+++ b/popperjs/package/lib/modifiers/hide.d.ts
@@ -0,0 +1,4 @@
+import type { Modifier } from "../types";
+export declare type HideModifier = Modifier<"hide", {}>;
+declare const _default: HideModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/hide.js b/popperjs/package/lib/modifiers/hide.js
new file mode 100644
index 0000000..799c4a7
--- /dev/null
+++ b/popperjs/package/lib/modifiers/hide.js
@@ -0,0 +1,61 @@
+import { top, bottom, left, right } from "../enums.js";
+import detectOverflow from "../utils/detectOverflow.js";
+
+function getSideOffsets(overflow, rect, preventedOffsets) {
+  if (preventedOffsets === void 0) {
+    preventedOffsets = {
+      x: 0,
+      y: 0
+    };
+  }
+
+  return {
+    top: overflow.top - rect.height - preventedOffsets.y,
+    right: overflow.right - rect.width + preventedOffsets.x,
+    bottom: overflow.bottom - rect.height + preventedOffsets.y,
+    left: overflow.left - rect.width - preventedOffsets.x
+  };
+}
+
+function isAnySideFullyClipped(overflow) {
+  return [top, right, bottom, left].some(function (side) {
+    return overflow[side] >= 0;
+  });
+}
+
+function hide(_ref) {
+  var state = _ref.state,
+      name = _ref.name;
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var preventedOffsets = state.modifiersData.preventOverflow;
+  var referenceOverflow = detectOverflow(state, {
+    elementContext: 'reference'
+  });
+  var popperAltOverflow = detectOverflow(state, {
+    altBoundary: true
+  });
+  var referenceClippingOffsets = getSideOffsets(referenceOverflow, referenceRect);
+  var popperEscapeOffsets = getSideOffsets(popperAltOverflow, popperRect, preventedOffsets);
+  var isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
+  var hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
+  state.modifiersData[name] = {
+    referenceClippingOffsets: referenceClippingOffsets,
+    popperEscapeOffsets: popperEscapeOffsets,
+    isReferenceHidden: isReferenceHidden,
+    hasPopperEscaped: hasPopperEscaped
+  };
+  state.attributes.popper = Object.assign({}, state.attributes.popper, {
+    'data-popper-reference-hidden': isReferenceHidden,
+    'data-popper-escaped': hasPopperEscaped
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'hide',
+  enabled: true,
+  phase: 'main',
+  requiresIfExists: ['preventOverflow'],
+  fn: hide
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/hide.js.flow b/popperjs/package/lib/modifiers/hide.js.flow
new file mode 100644
index 0000000..ee7476a
--- /dev/null
+++ b/popperjs/package/lib/modifiers/hide.js.flow
@@ -0,0 +1,76 @@
+// @flow
+import type {
+  ModifierArguments,
+  Modifier,
+  Rect,
+  SideObject,
+  Offsets,
+} from '../types';
+import { top, bottom, left, right } from '../enums';
+import detectOverflow from '../utils/detectOverflow';
+
+function getSideOffsets(
+  overflow: SideObject,
+  rect: Rect,
+  preventedOffsets: Offsets = { x: 0, y: 0 }
+): SideObject {
+  return {
+    top: overflow.top - rect.height - preventedOffsets.y,
+    right: overflow.right - rect.width + preventedOffsets.x,
+    bottom: overflow.bottom - rect.height + preventedOffsets.y,
+    left: overflow.left - rect.width - preventedOffsets.x,
+  };
+}
+
+function isAnySideFullyClipped(overflow: SideObject): boolean {
+  return [top, right, bottom, left].some((side) => overflow[side] >= 0);
+}
+
+function hide({ state, name }: ModifierArguments<{||}>) {
+  const referenceRect = state.rects.reference;
+  const popperRect = state.rects.popper;
+  const preventedOffsets = state.modifiersData.preventOverflow;
+
+  const referenceOverflow = detectOverflow(state, {
+    elementContext: 'reference',
+  });
+  const popperAltOverflow = detectOverflow(state, {
+    altBoundary: true,
+  });
+
+  const referenceClippingOffsets = getSideOffsets(
+    referenceOverflow,
+    referenceRect
+  );
+  const popperEscapeOffsets = getSideOffsets(
+    popperAltOverflow,
+    popperRect,
+    preventedOffsets
+  );
+
+  const isReferenceHidden = isAnySideFullyClipped(referenceClippingOffsets);
+  const hasPopperEscaped = isAnySideFullyClipped(popperEscapeOffsets);
+
+  state.modifiersData[name] = {
+    referenceClippingOffsets,
+    popperEscapeOffsets,
+    isReferenceHidden,
+    hasPopperEscaped,
+  };
+
+  state.attributes.popper = {
+    ...state.attributes.popper,
+    'data-popper-reference-hidden': isReferenceHidden,
+    'data-popper-escaped': hasPopperEscaped,
+  };
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type HideModifier = Modifier<'hide', {||}>;
+export default ({
+  name: 'hide',
+  enabled: true,
+  phase: 'main',
+  requiresIfExists: ['preventOverflow'],
+  fn: hide,
+}: HideModifier);
diff --git a/popperjs/package/lib/modifiers/index.d.ts b/popperjs/package/lib/modifiers/index.d.ts
new file mode 100644
index 0000000..1b457cd
--- /dev/null
+++ b/popperjs/package/lib/modifiers/index.d.ts
@@ -0,0 +1,9 @@
+export { default as applyStyles } from "./applyStyles";
+export { default as arrow } from "./arrow";
+export { default as computeStyles } from "./computeStyles";
+export { default as eventListeners } from "./eventListeners";
+export { default as flip } from "./flip";
+export { default as hide } from "./hide";
+export { default as offset } from "./offset";
+export { default as popperOffsets } from "./popperOffsets";
+export { default as preventOverflow } from "./preventOverflow";
diff --git a/popperjs/package/lib/modifiers/index.js b/popperjs/package/lib/modifiers/index.js
new file mode 100644
index 0000000..1d59909
--- /dev/null
+++ b/popperjs/package/lib/modifiers/index.js
@@ -0,0 +1,9 @@
+export { default as applyStyles } from "./applyStyles.js";
+export { default as arrow } from "./arrow.js";
+export { default as computeStyles } from "./computeStyles.js";
+export { default as eventListeners } from "./eventListeners.js";
+export { default as flip } from "./flip.js";
+export { default as hide } from "./hide.js";
+export { default as offset } from "./offset.js";
+export { default as popperOffsets } from "./popperOffsets.js";
+export { default as preventOverflow } from "./preventOverflow.js";
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/index.js.flow b/popperjs/package/lib/modifiers/index.js.flow
new file mode 100644
index 0000000..e3ee823
--- /dev/null
+++ b/popperjs/package/lib/modifiers/index.js.flow
@@ -0,0 +1,10 @@
+// @flow
+export { default as applyStyles } from './applyStyles';
+export { default as arrow } from './arrow';
+export { default as computeStyles } from './computeStyles';
+export { default as eventListeners } from './eventListeners';
+export { default as flip } from './flip';
+export { default as hide } from './hide';
+export { default as offset } from './offset';
+export { default as popperOffsets } from './popperOffsets';
+export { default as preventOverflow } from './preventOverflow';
diff --git a/popperjs/package/lib/modifiers/offset.d.ts b/popperjs/package/lib/modifiers/offset.d.ts
new file mode 100644
index 0000000..081956d
--- /dev/null
+++ b/popperjs/package/lib/modifiers/offset.d.ts
@@ -0,0 +1,18 @@
+import type { Placement } from "../enums";
+import type { Modifier, Rect, Offsets } from "../types";
+export declare type OffsetsFunction = (arg0: {
+    popper: Rect;
+    reference: Rect;
+    placement: Placement;
+}) => [number | null | undefined, number | null | undefined];
+declare type Offset = OffsetsFunction | [number | null | undefined, number | null | undefined];
+export declare type Options = {
+    offset: Offset;
+};
+export declare function distanceAndSkiddingToXY(placement: Placement, rects: {
+    popper: Rect;
+    reference: Rect;
+}, offset: Offset): Offsets;
+export declare type OffsetModifier = Modifier<"offset", Options>;
+declare const _default: OffsetModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/offset.js b/popperjs/package/lib/modifiers/offset.js
new file mode 100644
index 0000000..12fa007
--- /dev/null
+++ b/popperjs/package/lib/modifiers/offset.js
@@ -0,0 +1,54 @@
+import getBasePlacement from "../utils/getBasePlacement.js";
+import { top, left, right, placements } from "../enums.js"; // eslint-disable-next-line import/no-unused-modules
+
+export function distanceAndSkiddingToXY(placement, rects, offset) {
+  var basePlacement = getBasePlacement(placement);
+  var invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;
+
+  var _ref = typeof offset === 'function' ? offset(Object.assign({}, rects, {
+    placement: placement
+  })) : offset,
+      skidding = _ref[0],
+      distance = _ref[1];
+
+  skidding = skidding || 0;
+  distance = (distance || 0) * invertDistance;
+  return [left, right].indexOf(basePlacement) >= 0 ? {
+    x: distance,
+    y: skidding
+  } : {
+    x: skidding,
+    y: distance
+  };
+}
+
+function offset(_ref2) {
+  var state = _ref2.state,
+      options = _ref2.options,
+      name = _ref2.name;
+  var _options$offset = options.offset,
+      offset = _options$offset === void 0 ? [0, 0] : _options$offset;
+  var data = placements.reduce(function (acc, placement) {
+    acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);
+    return acc;
+  }, {});
+  var _data$state$placement = data[state.placement],
+      x = _data$state$placement.x,
+      y = _data$state$placement.y;
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.modifiersData.popperOffsets.x += x;
+    state.modifiersData.popperOffsets.y += y;
+  }
+
+  state.modifiersData[name] = data;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'offset',
+  enabled: true,
+  phase: 'main',
+  requires: ['popperOffsets'],
+  fn: offset
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/offset.js.flow b/popperjs/package/lib/modifiers/offset.js.flow
new file mode 100644
index 0000000..b39edc4
--- /dev/null
+++ b/popperjs/package/lib/modifiers/offset.js.flow
@@ -0,0 +1,71 @@
+// @flow
+import type { Placement } from '../enums';
+import type { ModifierArguments, Modifier, Rect, Offsets } from '../types';
+import getBasePlacement from '../utils/getBasePlacement';
+import { top, left, right, placements } from '../enums';
+
+// eslint-disable-next-line import/no-unused-modules
+export type OffsetsFunction = ({
+  popper: Rect,
+  reference: Rect,
+  placement: Placement,
+}) => [?number, ?number];
+
+type Offset = OffsetsFunction | [?number, ?number];
+
+// eslint-disable-next-line import/no-unused-modules
+export type Options = {
+  offset: Offset,
+};
+
+export function distanceAndSkiddingToXY(
+  placement: Placement,
+  rects: { popper: Rect, reference: Rect },
+  offset: Offset
+): Offsets {
+  const basePlacement = getBasePlacement(placement);
+  const invertDistance = [left, top].indexOf(basePlacement) >= 0 ? -1 : 1;
+
+  let [skidding, distance] =
+    typeof offset === 'function'
+      ? offset({
+          ...rects,
+          placement,
+        })
+      : offset;
+
+  skidding = skidding || 0;
+  distance = (distance || 0) * invertDistance;
+
+  return [left, right].indexOf(basePlacement) >= 0
+    ? { x: distance, y: skidding }
+    : { x: skidding, y: distance };
+}
+
+function offset({ state, options, name }: ModifierArguments<Options>) {
+  const { offset = [0, 0] } = options;
+
+  const data = placements.reduce((acc, placement) => {
+    acc[placement] = distanceAndSkiddingToXY(placement, state.rects, offset);
+    return acc;
+  }, {});
+
+  const { x, y } = data[state.placement];
+
+  if (state.modifiersData.popperOffsets != null) {
+    state.modifiersData.popperOffsets.x += x;
+    state.modifiersData.popperOffsets.y += y;
+  }
+
+  state.modifiersData[name] = data;
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type OffsetModifier = Modifier<'offset', Options>;
+export default ({
+  name: 'offset',
+  enabled: true,
+  phase: 'main',
+  requires: ['popperOffsets'],
+  fn: offset,
+}: OffsetModifier);
diff --git a/popperjs/package/lib/modifiers/popperOffsets.d.ts b/popperjs/package/lib/modifiers/popperOffsets.d.ts
new file mode 100644
index 0000000..831cd55
--- /dev/null
+++ b/popperjs/package/lib/modifiers/popperOffsets.d.ts
@@ -0,0 +1,4 @@
+import type { Modifier } from "../types";
+export declare type PopperOffsetsModifier = Modifier<"popperOffsets", {}>;
+declare const _default: PopperOffsetsModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/popperOffsets.js b/popperjs/package/lib/modifiers/popperOffsets.js
new file mode 100644
index 0000000..5440ab7
--- /dev/null
+++ b/popperjs/package/lib/modifiers/popperOffsets.js
@@ -0,0 +1,25 @@
+import computeOffsets from "../utils/computeOffsets.js";
+
+function popperOffsets(_ref) {
+  var state = _ref.state,
+      name = _ref.name;
+  // Offsets are the actual position the popper needs to have to be
+  // properly positioned near its reference element
+  // This is the most basic placement, and will be adjusted by
+  // the modifiers in the next step
+  state.modifiersData[name] = computeOffsets({
+    reference: state.rects.reference,
+    element: state.rects.popper,
+    strategy: 'absolute',
+    placement: state.placement
+  });
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'popperOffsets',
+  enabled: true,
+  phase: 'read',
+  fn: popperOffsets,
+  data: {}
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/popperOffsets.js.flow b/popperjs/package/lib/modifiers/popperOffsets.js.flow
new file mode 100644
index 0000000..30b5894
--- /dev/null
+++ b/popperjs/package/lib/modifiers/popperOffsets.js.flow
@@ -0,0 +1,26 @@
+// @flow
+import type { ModifierArguments, Modifier } from '../types';
+import computeOffsets from '../utils/computeOffsets';
+
+function popperOffsets({ state, name }: ModifierArguments<{||}>) {
+  // Offsets are the actual position the popper needs to have to be
+  // properly positioned near its reference element
+  // This is the most basic placement, and will be adjusted by
+  // the modifiers in the next step
+  state.modifiersData[name] = computeOffsets({
+    reference: state.rects.reference,
+    element: state.rects.popper,
+    strategy: 'absolute',
+    placement: state.placement,
+  });
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type PopperOffsetsModifier = Modifier<'popperOffsets', {||}>;
+export default ({
+  name: 'popperOffsets',
+  enabled: true,
+  phase: 'read',
+  fn: popperOffsets,
+  data: {},
+}: PopperOffsetsModifier);
diff --git a/popperjs/package/lib/modifiers/preventOverflow.d.ts b/popperjs/package/lib/modifiers/preventOverflow.d.ts
new file mode 100644
index 0000000..393cc8b
--- /dev/null
+++ b/popperjs/package/lib/modifiers/preventOverflow.d.ts
@@ -0,0 +1,30 @@
+import type { Placement, Boundary, RootBoundary } from "../enums";
+import type { Rect, Modifier, Padding } from "../types";
+declare type TetherOffset = ((arg0: {
+    popper: Rect;
+    reference: Rect;
+    placement: Placement;
+}) => number | {
+    mainAxis: number;
+    altAxis: number;
+}) | number | {
+    mainAxis: number;
+    altAxis: number;
+};
+export declare type Options = {
+    mainAxis: boolean;
+    altAxis: boolean;
+    boundary: Boundary;
+    rootBoundary: RootBoundary;
+    altBoundary: boolean;
+    /**
+     * Allows the popper to overflow from its boundaries to keep it near its
+     * reference element
+     */
+    tether: boolean;
+    tetherOffset: TetherOffset;
+    padding: Padding;
+};
+export declare type PreventOverflowModifier = Modifier<"preventOverflow", Options>;
+declare const _default: PreventOverflowModifier;
+export default _default;
diff --git a/popperjs/package/lib/modifiers/preventOverflow.js b/popperjs/package/lib/modifiers/preventOverflow.js
new file mode 100644
index 0000000..729eedd
--- /dev/null
+++ b/popperjs/package/lib/modifiers/preventOverflow.js
@@ -0,0 +1,142 @@
+import { top, left, right, bottom, start } from "../enums.js";
+import getBasePlacement from "../utils/getBasePlacement.js";
+import getMainAxisFromPlacement from "../utils/getMainAxisFromPlacement.js";
+import getAltAxis from "../utils/getAltAxis.js";
+import { within, withinMaxClamp } from "../utils/within.js";
+import getLayoutRect from "../dom-utils/getLayoutRect.js";
+import getOffsetParent from "../dom-utils/getOffsetParent.js";
+import detectOverflow from "../utils/detectOverflow.js";
+import getVariation from "../utils/getVariation.js";
+import getFreshSideObject from "../utils/getFreshSideObject.js";
+import { min as mathMin, max as mathMax } from "../utils/math.js";
+
+function preventOverflow(_ref) {
+  var state = _ref.state,
+      options = _ref.options,
+      name = _ref.name;
+  var _options$mainAxis = options.mainAxis,
+      checkMainAxis = _options$mainAxis === void 0 ? true : _options$mainAxis,
+      _options$altAxis = options.altAxis,
+      checkAltAxis = _options$altAxis === void 0 ? false : _options$altAxis,
+      boundary = options.boundary,
+      rootBoundary = options.rootBoundary,
+      altBoundary = options.altBoundary,
+      padding = options.padding,
+      _options$tether = options.tether,
+      tether = _options$tether === void 0 ? true : _options$tether,
+      _options$tetherOffset = options.tetherOffset,
+      tetherOffset = _options$tetherOffset === void 0 ? 0 : _options$tetherOffset;
+  var overflow = detectOverflow(state, {
+    boundary: boundary,
+    rootBoundary: rootBoundary,
+    padding: padding,
+    altBoundary: altBoundary
+  });
+  var basePlacement = getBasePlacement(state.placement);
+  var variation = getVariation(state.placement);
+  var isBasePlacement = !variation;
+  var mainAxis = getMainAxisFromPlacement(basePlacement);
+  var altAxis = getAltAxis(mainAxis);
+  var popperOffsets = state.modifiersData.popperOffsets;
+  var referenceRect = state.rects.reference;
+  var popperRect = state.rects.popper;
+  var tetherOffsetValue = typeof tetherOffset === 'function' ? tetherOffset(Object.assign({}, state.rects, {
+    placement: state.placement
+  })) : tetherOffset;
+  var normalizedTetherOffsetValue = typeof tetherOffsetValue === 'number' ? {
+    mainAxis: tetherOffsetValue,
+    altAxis: tetherOffsetValue
+  } : Object.assign({
+    mainAxis: 0,
+    altAxis: 0
+  }, tetherOffsetValue);
+  var offsetModifierState = state.modifiersData.offset ? state.modifiersData.offset[state.placement] : null;
+  var data = {
+    x: 0,
+    y: 0
+  };
+
+  if (!popperOffsets) {
+    return;
+  }
+
+  if (checkMainAxis) {
+    var _offsetModifierState$;
+
+    var mainSide = mainAxis === 'y' ? top : left;
+    var altSide = mainAxis === 'y' ? bottom : right;
+    var len = mainAxis === 'y' ? 'height' : 'width';
+    var offset = popperOffsets[mainAxis];
+    var min = offset + overflow[mainSide];
+    var max = offset - overflow[altSide];
+    var additive = tether ? -popperRect[len] / 2 : 0;
+    var minLen = variation === start ? referenceRect[len] : popperRect[len];
+    var maxLen = variation === start ? -popperRect[len] : -referenceRect[len]; // We need to include the arrow in the calculation so the arrow doesn't go
+    // outside the reference bounds
+
+    var arrowElement = state.elements.arrow;
+    var arrowRect = tether && arrowElement ? getLayoutRect(arrowElement) : {
+      width: 0,
+      height: 0
+    };
+    var arrowPaddingObject = state.modifiersData['arrow#persistent'] ? state.modifiersData['arrow#persistent'].padding : getFreshSideObject();
+    var arrowPaddingMin = arrowPaddingObject[mainSide];
+    var arrowPaddingMax = arrowPaddingObject[altSide]; // If the reference length is smaller than the arrow length, we don't want
+    // to include its full size in the calculation. If the reference is small
+    // and near the edge of a boundary, the popper can overflow even if the
+    // reference is not overflowing as well (e.g. virtual elements with no
+    // width or height)
+
+    var arrowLen = within(0, referenceRect[len], arrowRect[len]);
+    var minOffset = isBasePlacement ? referenceRect[len] / 2 - additive - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis : minLen - arrowLen - arrowPaddingMin - normalizedTetherOffsetValue.mainAxis;
+    var maxOffset = isBasePlacement ? -referenceRect[len] / 2 + additive + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis : maxLen + arrowLen + arrowPaddingMax + normalizedTetherOffsetValue.mainAxis;
+    var arrowOffsetParent = state.elements.arrow && getOffsetParent(state.elements.arrow);
+    var clientOffset = arrowOffsetParent ? mainAxis === 'y' ? arrowOffsetParent.clientTop || 0 : arrowOffsetParent.clientLeft || 0 : 0;
+    var offsetModifierValue = (_offsetModifierState$ = offsetModifierState == null ? void 0 : offsetModifierState[mainAxis]) != null ? _offsetModifierState$ : 0;
+    var tetherMin = offset + minOffset - offsetModifierValue - clientOffset;
+    var tetherMax = offset + maxOffset - offsetModifierValue;
+    var preventedOffset = within(tether ? mathMin(min, tetherMin) : min, offset, tether ? mathMax(max, tetherMax) : max);
+    popperOffsets[mainAxis] = preventedOffset;
+    data[mainAxis] = preventedOffset - offset;
+  }
+
+  if (checkAltAxis) {
+    var _offsetModifierState$2;
+
+    var _mainSide = mainAxis === 'x' ? top : left;
+
+    var _altSide = mainAxis === 'x' ? bottom : right;
+
+    var _offset = popperOffsets[altAxis];
+
+    var _len = altAxis === 'y' ? 'height' : 'width';
+
+    var _min = _offset + overflow[_mainSide];
+
+    var _max = _offset - overflow[_altSide];
+
+    var isOriginSide = [top, left].indexOf(basePlacement) !== -1;
+
+    var _offsetModifierValue = (_offsetModifierState$2 = offsetModifierState == null ? void 0 : offsetModifierState[altAxis]) != null ? _offsetModifierState$2 : 0;
+
+    var _tetherMin = isOriginSide ? _min : _offset - referenceRect[_len] - popperRect[_len] - _offsetModifierValue + normalizedTetherOffsetValue.altAxis;
+
+    var _tetherMax = isOriginSide ? _offset + referenceRect[_len] + popperRect[_len] - _offsetModifierValue - normalizedTetherOffsetValue.altAxis : _max;
+
+    var _preventedOffset = tether && isOriginSide ? withinMaxClamp(_tetherMin, _offset, _tetherMax) : within(tether ? _tetherMin : _min, _offset, tether ? _tetherMax : _max);
+
+    popperOffsets[altAxis] = _preventedOffset;
+    data[altAxis] = _preventedOffset - _offset;
+  }
+
+  state.modifiersData[name] = data;
+} // eslint-disable-next-line import/no-unused-modules
+
+
+export default {
+  name: 'preventOverflow',
+  enabled: true,
+  phase: 'main',
+  fn: preventOverflow,
+  requiresIfExists: ['offset']
+};
\ No newline at end of file
diff --git a/popperjs/package/lib/modifiers/preventOverflow.js.flow b/popperjs/package/lib/modifiers/preventOverflow.js.flow
new file mode 100644
index 0000000..d503cb9
--- /dev/null
+++ b/popperjs/package/lib/modifiers/preventOverflow.js.flow
@@ -0,0 +1,220 @@
+// @flow
+import { top, left, right, bottom, start } from '../enums';
+import type { Placement, Boundary, RootBoundary } from '../enums';
+import type { Rect, ModifierArguments, Modifier, Padding } from '../types';
+import getBasePlacement from '../utils/getBasePlacement';
+import getMainAxisFromPlacement from '../utils/getMainAxisFromPlacement';
+import getAltAxis from '../utils/getAltAxis';
+import { within, withinMaxClamp } from '../utils/within';
+import getLayoutRect from '../dom-utils/getLayoutRect';
+import getOffsetParent from '../dom-utils/getOffsetParent';
+import detectOverflow from '../utils/detectOverflow';
+import getVariation from '../utils/getVariation';
+import getFreshSideObject from '../utils/getFreshSideObject';
+import { min as mathMin, max as mathMax } from '../utils/math';
+
+type TetherOffset =
+  | (({
+      popper: Rect,
+      reference: Rect,
+      placement: Placement,
+    }) => number | { mainAxis: number, altAxis: number })
+  | number
+  | { mainAxis: number, altAxis: number };
+
+// eslint-disable-next-line import/no-unused-modules
+export type Options = {
+  /* Prevents boundaries overflow on the main axis */
+  mainAxis: boolean,
+  /* Prevents boundaries overflow on the alternate axis */
+  altAxis: boolean,
+  /* The area to check the popper is overflowing in */
+  boundary: Boundary,
+  /* If the popper is not overflowing the main area, fallback to this one */
+  rootBoundary: RootBoundary,
+  /* Use the reference's "clippingParents" boundary context */
+  altBoundary: boolean,
+  /**
+   * Allows the popper to overflow from its boundaries to keep it near its
+   * reference element
+   */
+  tether: boolean,
+  /* Offsets when the `tether` option should activate */
+  tetherOffset: TetherOffset,
+  /* Sets a padding to the provided boundary */
+  padding: Padding,
+};
+
+function preventOverflow({ state, options, name }: ModifierArguments<Options>) {
+  const {
+    mainAxis: checkMainAxis = true,
+    altAxis: checkAltAxis = false,
+    boundary,
+    rootBoundary,
+    altBoundary,
+    padding,
+    tether = true,
+    tetherOffset = 0,
+  } = options;
+
+  const overflow = detectOverflow(state, {
+    boundary,
+    rootBoundary,
+    padding,
+    altBoundary,
+  });
+  const basePlacement = getBasePlacement(state.placement);
+  const variation = getVariation(state.placement);
+  const isBasePlacement = !variation;
+  const mainAxis = getMainAxisFromPlacement(basePlacement);
+  const altAxis = getAltAxis(mainAxis);
+  const popperOffsets = state.modifiersData.popperOffsets;
+  const referenceRect = state.rects.reference;
+  const popperRect = state.rects.popper;
+  const tetherOffsetValue =
+    typeof tetherOffset === 'function'
+      ? tetherOffset({
+          ...state.rects,
+          placement: state.placement,
+        })
+      : tetherOffset;
+  const normalizedTetherOffsetValue =
+    typeof tetherOffsetValue === 'number'
+      ? { mainAxis: tetherOffsetValue, altAxis: tetherOffsetValue }
+      : { mainAxis: 0, altAxis: 0, ...tetherOffsetValue };
+  const offsetModifierState = state.modifiersData.offset
+    ? state.modifiersData.offset[state.placement]
+    : null;
+
+  const data = { x: 0, y: 0 };
+
+  if (!popperOffsets) {
+    return;
+  }
+
+  if (checkMainAxis) {
+    const mainSide = mainAxis === 'y' ? top : left;
+    const altSide = mainAxis === 'y' ? bottom : right;
+    const len = mainAxis === 'y' ? 'height' : 'width';
+    const offset = popperOffsets[mainAxis];
+
+    const min = offset + overflow[mainSide];
+    const max = offset - overflow[altSide];
+
+    const additive = tether ? -popperRect[len] / 2 : 0;
+
+    const minLen = variation === start ? referenceRect[len] : popperRect[len];
+    const maxLen = variation === start ? -popperRect[len] : -referenceRect[len];
+
+    // We need to include the arrow in the calculation so the arrow doesn't go
+    // outside the reference bounds
+    const arrowElement = state.elements.arrow;
+    const arrowRect =
+      tether && arrowElement
+        ? getLayoutRect(arrowElement)
+        : { width: 0, height: 0 };
+    const arrowPaddingObject = state.modifiersData['arrow#persistent']
+      ? state.modifiersData['arrow#persistent'].padding
+      : getFreshSideObject();
+    const arrowPaddingMin = arrowPaddingObject[mainSide];
+    const arrowPaddingMax = arrowPaddingObject[altSide];
+
+    // If the reference length is smaller than the arrow length, we don't want
+    // to include its full size in the calculation. If the reference is small
+    // and near the edge of a boundary, the popper can overflow even if the
+    // reference is not overflowing as well (e.g. virtual elements with no
+    // width or height)
+    const arrowLen = within(0, referenceRect[len], arrowRect[len]);
+
+    const minOffset = isBasePlacement
+      ? referenceRect[len] / 2 -
+        additive -
+        arrowLen -
+        arrowPaddingMin -
+        normalizedTetherOffsetValue.mainAxis
+      : minLen -
+        arrowLen -
+        arrowPaddingMin -
+        normalizedTetherOffsetValue.mainAxis;
+    const maxOffset = isBasePlacement
+      ? -referenceRect[len] / 2 +
+        additive +
+        arrowLen +
+        arrowPaddingMax +
+        normalizedTetherOffsetValue.mainAxis
+      : maxLen +
+        arrowLen +
+        arrowPaddingMax +
+        normalizedTetherOffsetValue.mainAxis;
+
+    const arrowOffsetParent =
+      state.elements.arrow && getOffsetParent(state.elements.arrow);
+    const clientOffset = arrowOffsetParent
+      ? mainAxis === 'y'
+        ? arrowOffsetParent.clientTop || 0
+        : arrowOffsetParent.clientLeft || 0
+      : 0;
+
+    const offsetModifierValue = offsetModifierState?.[mainAxis] ?? 0;
+    const tetherMin = offset + minOffset - offsetModifierValue - clientOffset;
+    const tetherMax = offset + maxOffset - offsetModifierValue;
+
+    const preventedOffset = within(
+      tether ? mathMin(min, tetherMin) : min,
+      offset,
+      tether ? mathMax(max, tetherMax) : max
+    );
+
+    popperOffsets[mainAxis] = preventedOffset;
+    data[mainAxis] = preventedOffset - offset;
+  }
+
+  if (checkAltAxis) {
+    const mainSide = mainAxis === 'x' ? top : left;
+    const altSide = mainAxis === 'x' ? bottom : right;
+    const offset = popperOffsets[altAxis];
+
+    const len = altAxis === 'y' ? 'height' : 'width';
+
+    const min = offset + overflow[mainSide];
+    const max = offset - overflow[altSide];
+
+    const isOriginSide = [top, left].indexOf(basePlacement) !== -1;
+
+    const offsetModifierValue = offsetModifierState?.[altAxis] ?? 0;
+    const tetherMin = isOriginSide
+      ? min
+      : offset -
+        referenceRect[len] -
+        popperRect[len] -
+        offsetModifierValue +
+        normalizedTetherOffsetValue.altAxis;
+    const tetherMax = isOriginSide
+      ? offset +
+        referenceRect[len] +
+        popperRect[len] -
+        offsetModifierValue -
+        normalizedTetherOffsetValue.altAxis
+      : max;
+
+    const preventedOffset =
+      tether && isOriginSide
+        ? withinMaxClamp(tetherMin, offset, tetherMax)
+        : within(tether ? tetherMin : min, offset, tether ? tetherMax : max);
+
+    popperOffsets[altAxis] = preventedOffset;
+    data[altAxis] = preventedOffset - offset;
+  }
+
+  state.modifiersData[name] = data;
+}
+
+// eslint-disable-next-line import/no-unused-modules
+export type PreventOverflowModifier = Modifier<'preventOverflow', Options>;
+export default ({
+  name: 'preventOverflow',
+  enabled: true,
+  phase: 'main',
+  fn: preventOverflow,
+  requiresIfExists: ['offset'],
+}: PreventOverflowModifier);
diff --git a/popperjs/package/lib/popper-base.d.ts b/popperjs/package/lib/popper-base.d.ts
new file mode 100644
index 0000000..6ced8ee
--- /dev/null
+++ b/popperjs/package/lib/popper-base.d.ts
@@ -0,0 +1,3 @@
+import { createPopper, popperGenerator, detectOverflow } from "./createPopper";
+export * from "./types";
+export { createPopper, popperGenerator, detectOverflow };
diff --git a/popperjs/package/lib/popper-base.js b/popperjs/package/lib/popper-base.js
new file mode 100644
index 0000000..a7c8a32
--- /dev/null
+++ b/popperjs/package/lib/popper-base.js
@@ -0,0 +1,3 @@
+import { createPopper, popperGenerator, detectOverflow } from "./createPopper.js";
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper, popperGenerator, detectOverflow };
\ No newline at end of file
diff --git a/popperjs/package/lib/popper-base.js.flow b/popperjs/package/lib/popper-base.js.flow
new file mode 100644
index 0000000..35e31ff
--- /dev/null
+++ b/popperjs/package/lib/popper-base.js.flow
@@ -0,0 +1,7 @@
+// @flow
+import { createPopper, popperGenerator, detectOverflow } from './createPopper';
+
+export type * from './types';
+
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper, popperGenerator, detectOverflow };
diff --git a/popperjs/package/lib/popper-lite.d.ts b/popperjs/package/lib/popper-lite.d.ts
new file mode 100644
index 0000000..3bb7af6
--- /dev/null
+++ b/popperjs/package/lib/popper-lite.d.ts
@@ -0,0 +1,5 @@
+import { popperGenerator, detectOverflow } from "./createPopper";
+export * from "./types";
+declare const defaultModifiers: (import("./modifiers/popperOffsets").PopperOffsetsModifier | import("./modifiers/eventListeners").EventListenersModifier | import("./modifiers/computeStyles").ComputeStylesModifier | import("./modifiers/applyStyles").ApplyStylesModifier)[];
+declare const createPopper: <TModifier extends Partial<import("./types").Modifier<any, any>>>(reference: Element | import("./types").VirtualElement, popper: HTMLElement, options?: Partial<import("./types").OptionsGeneric<TModifier>>) => import("./types").Instance;
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow };
diff --git a/popperjs/package/lib/popper-lite.js b/popperjs/package/lib/popper-lite.js
new file mode 100644
index 0000000..6fb32be
--- /dev/null
+++ b/popperjs/package/lib/popper-lite.js
@@ -0,0 +1,11 @@
+import { popperGenerator, detectOverflow } from "./createPopper.js";
+import eventListeners from "./modifiers/eventListeners.js";
+import popperOffsets from "./modifiers/popperOffsets.js";
+import computeStyles from "./modifiers/computeStyles.js";
+import applyStyles from "./modifiers/applyStyles.js";
+var defaultModifiers = [eventListeners, popperOffsets, computeStyles, applyStyles];
+var createPopper = /*#__PURE__*/popperGenerator({
+  defaultModifiers: defaultModifiers
+}); // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow };
\ No newline at end of file
diff --git a/popperjs/package/lib/popper-lite.js.flow b/popperjs/package/lib/popper-lite.js.flow
new file mode 100644
index 0000000..1ec957b
--- /dev/null
+++ b/popperjs/package/lib/popper-lite.js.flow
@@ -0,0 +1,21 @@
+// @flow
+import { popperGenerator, detectOverflow } from './createPopper';
+
+import eventListeners from './modifiers/eventListeners';
+import popperOffsets from './modifiers/popperOffsets';
+import computeStyles from './modifiers/computeStyles';
+import applyStyles from './modifiers/applyStyles';
+
+export type * from './types';
+
+const defaultModifiers = [
+  eventListeners,
+  popperOffsets,
+  computeStyles,
+  applyStyles,
+];
+
+const createPopper = popperGenerator({ defaultModifiers });
+
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow };
diff --git a/popperjs/package/lib/popper.d.ts b/popperjs/package/lib/popper.d.ts
new file mode 100644
index 0000000..d7491a3
--- /dev/null
+++ b/popperjs/package/lib/popper.d.ts
@@ -0,0 +1,7 @@
+import { popperGenerator, detectOverflow } from "./createPopper";
+export * from "./types";
+declare const defaultModifiers: (import("./modifiers/popperOffsets").PopperOffsetsModifier | import("./modifiers/flip").FlipModifier | import("./modifiers/hide").HideModifier | import("./modifiers/offset").OffsetModifier | import("./modifiers/eventListeners").EventListenersModifier | import("./modifiers/computeStyles").ComputeStylesModifier | import("./modifiers/arrow").ArrowModifier | import("./modifiers/preventOverflow").PreventOverflowModifier | import("./modifiers/applyStyles").ApplyStylesModifier)[];
+declare const createPopper: <TModifier extends Partial<import("./types").Modifier<any, any>>>(reference: Element | import("./types").VirtualElement, popper: HTMLElement, options?: Partial<import("./types").OptionsGeneric<TModifier>>) => import("./types").Instance;
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow };
+export { createPopper as createPopperLite } from "./popper-lite";
+export * from "./modifiers";
diff --git a/popperjs/package/lib/popper.js b/popperjs/package/lib/popper.js
new file mode 100644
index 0000000..00f67a0
--- /dev/null
+++ b/popperjs/package/lib/popper.js
@@ -0,0 +1,20 @@
+import { popperGenerator, detectOverflow } from "./createPopper.js";
+import eventListeners from "./modifiers/eventListeners.js";
+import popperOffsets from "./modifiers/popperOffsets.js";
+import computeStyles from "./modifiers/computeStyles.js";
+import applyStyles from "./modifiers/applyStyles.js";
+import offset from "./modifiers/offset.js";
+import flip from "./modifiers/flip.js";
+import preventOverflow from "./modifiers/preventOverflow.js";
+import arrow from "./modifiers/arrow.js";
+import hide from "./modifiers/hide.js";
+var defaultModifiers = [eventListeners, popperOffsets, computeStyles, applyStyles, offset, flip, preventOverflow, arrow, hide];
+var createPopper = /*#__PURE__*/popperGenerator({
+  defaultModifiers: defaultModifiers
+}); // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow }; // eslint-disable-next-line import/no-unused-modules
+
+export { createPopper as createPopperLite } from "./popper-lite.js"; // eslint-disable-next-line import/no-unused-modules
+
+export * from "./modifiers/index.js";
\ No newline at end of file
diff --git a/popperjs/package/lib/popper.js.flow b/popperjs/package/lib/popper.js.flow
new file mode 100644
index 0000000..7238840
--- /dev/null
+++ b/popperjs/package/lib/popper.js.flow
@@ -0,0 +1,35 @@
+// @flow
+import { popperGenerator, detectOverflow } from './createPopper';
+
+import eventListeners from './modifiers/eventListeners';
+import popperOffsets from './modifiers/popperOffsets';
+import computeStyles from './modifiers/computeStyles';
+import applyStyles from './modifiers/applyStyles';
+import offset from './modifiers/offset';
+import flip from './modifiers/flip';
+import preventOverflow from './modifiers/preventOverflow';
+import arrow from './modifiers/arrow';
+import hide from './modifiers/hide';
+
+export type * from './types';
+
+const defaultModifiers = [
+  eventListeners,
+  popperOffsets,
+  computeStyles,
+  applyStyles,
+  offset,
+  flip,
+  preventOverflow,
+  arrow,
+  hide,
+];
+
+const createPopper = popperGenerator({ defaultModifiers });
+
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper, popperGenerator, defaultModifiers, detectOverflow };
+// eslint-disable-next-line import/no-unused-modules
+export { createPopper as createPopperLite } from './popper-lite';
+// eslint-disable-next-line import/no-unused-modules
+export * from './modifiers';
diff --git a/popperjs/package/lib/types.d.ts b/popperjs/package/lib/types.d.ts
new file mode 100644
index 0000000..11f9219
--- /dev/null
+++ b/popperjs/package/lib/types.d.ts
@@ -0,0 +1,167 @@
+import type { Placement, ModifierPhases } from "./enums";
+import type { PopperOffsetsModifier } from "./modifiers/popperOffsets";
+import type { FlipModifier } from "./modifiers/flip";
+import type { HideModifier } from "./modifiers/hide";
+import type { OffsetModifier } from "./modifiers/offset";
+import type { EventListenersModifier } from "./modifiers/eventListeners";
+import type { ComputeStylesModifier } from "./modifiers/computeStyles";
+import type { ArrowModifier } from "./modifiers/arrow";
+import type { PreventOverflowModifier } from "./modifiers/preventOverflow";
+import type { ApplyStylesModifier } from "./modifiers/applyStyles";
+export declare type Obj = {
+    [key: string]: any;
+};
+export declare type VisualViewport = EventTarget & {
+    width: number;
+    height: number;
+    offsetLeft: number;
+    offsetTop: number;
+    scale: number;
+};
+export declare type Window = {
+    innerHeight: number;
+    offsetHeight: number;
+    innerWidth: number;
+    offsetWidth: number;
+    pageXOffset: number;
+    pageYOffset: number;
+    getComputedStyle: typeof getComputedStyle;
+    addEventListener(type: any, listener: any, optionsOrUseCapture?: any): void;
+    removeEventListener(type: any, listener: any, optionsOrUseCapture?: any): void;
+    Element: Element;
+    HTMLElement: HTMLElement;
+    Node: Node;
+    toString(): "[object Window]";
+    devicePixelRatio: number;
+    visualViewport?: VisualViewport;
+    ShadowRoot: ShadowRoot;
+};
+export declare type Rect = {
+    width: number;
+    height: number;
+    x: number;
+    y: number;
+};
+export declare type Offsets = {
+    y: number;
+    x: number;
+};
+export declare type PositioningStrategy = "absolute" | "fixed";
+export declare type StateRects = {
+    reference: Rect;
+    popper: Rect;
+};
+export declare type StateOffsets = {
+    popper: Offsets;
+    arrow?: Offsets;
+};
+declare type OffsetData = {
+    [key in Placement]?: Offsets;
+};
+export declare type State = {
+    elements: {
+        reference: Element | VirtualElement;
+        popper: HTMLElement;
+        arrow?: HTMLElement;
+    };
+    options: OptionsGeneric<any>;
+    placement: Placement;
+    strategy: PositioningStrategy;
+    orderedModifiers: Array<Modifier<any, any>>;
+    rects: StateRects;
+    scrollParents: {
+        reference: Array<Element | Window | VisualViewport>;
+        popper: Array<Element | Window | VisualViewport>;
+    };
+    styles: {
+        [key: string]: Partial<CSSStyleDeclaration>;
+    };
+    attributes: {
+        [key: string]: {
+            [key: string]: string | boolean;
+        };
+    };
+    modifiersData: {
+        arrow?: {
+            x?: number;
+            y?: number;
+            centerOffset: number;
+        };
+        hide?: {
+            isReferenceHidden: boolean;
+            hasPopperEscaped: boolean;
+            referenceClippingOffsets: SideObject;
+            popperEscapeOffsets: SideObject;
+        };
+        offset?: OffsetData;
+        preventOverflow?: Offsets;
+        popperOffsets?: Offsets;
+        [key: string]: any;
+    };
+    reset: boolean;
+};
+declare type SetAction<S> = S | ((prev: S) => S);
+export declare type Instance = {
+    state: State;
+    destroy: () => void;
+    forceUpdate: () => void;
+    update: () => Promise<Partial<State>>;
+    setOptions: (setOptionsAction: SetAction<Partial<OptionsGeneric<any>>>) => Promise<Partial<State>>;
+};
+export declare type ModifierArguments<Options extends Obj> = {
+    state: State;
+    instance: Instance;
+    options: Partial<Options>;
+    name: string;
+};
+export declare type Modifier<Name, Options> = {
+    name: Name;
+    enabled: boolean;
+    phase: ModifierPhases;
+    requires?: Array<string>;
+    requiresIfExists?: Array<string>;
+    fn: (arg0: ModifierArguments<Options>) => State | void;
+    effect?: (arg0: ModifierArguments<Options>) => (() => void) | void;
+    options?: Partial<Options>;
+    data?: Obj;
+};
+export declare type StrictModifiers = Partial<OffsetModifier> | Partial<ApplyStylesModifier> | Partial<ArrowModifier> | Partial<HideModifier> | Partial<ComputeStylesModifier> | Partial<EventListenersModifier> | Partial<FlipModifier> | Partial<PreventOverflowModifier> | Partial<PopperOffsetsModifier>;
+export declare type EventListeners = {
+    scroll: boolean;
+    resize: boolean;
+};
+export declare type Options = {
+    placement: Placement;
+    modifiers: Array<Partial<Modifier<any, any>>>;
+    strategy: PositioningStrategy;
+    onFirstUpdate?: (arg0: Partial<State>) => void;
+};
+export declare type OptionsGeneric<TModifier> = {
+    placement: Placement;
+    modifiers: Array<TModifier>;
+    strategy: PositioningStrategy;
+    onFirstUpdate?: (arg0: Partial<State>) => void;
+};
+export declare type UpdateCallback = (arg0: State) => void;
+export declare type ClientRectObject = {
+    x: number;
+    y: number;
+    top: number;
+    left: number;
+    right: number;
+    bottom: number;
+    width: number;
+    height: number;
+};
+export declare type SideObject = {
+    top: number;
+    left: number;
+    right: number;
+    bottom: number;
+};
+export declare type Padding = number | Partial<SideObject>;
+export declare type VirtualElement = {
+    getBoundingClientRect: () => ClientRect | DOMRect;
+    contextElement?: Element;
+};
+export {};
diff --git a/popperjs/package/lib/types.js b/popperjs/package/lib/types.js
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/popperjs/package/lib/types.js
diff --git a/popperjs/package/lib/types.js.flow b/popperjs/package/lib/types.js.flow
new file mode 100644
index 0000000..60051b9
--- /dev/null
+++ b/popperjs/package/lib/types.js.flow
@@ -0,0 +1,199 @@
+// @flow
+/* eslint-disable import/no-unused-modules */
+import type { Placement, ModifierPhases } from './enums';
+
+import type { PopperOffsetsModifier } from './modifiers/popperOffsets';
+import type { FlipModifier } from './modifiers/flip';
+import type { HideModifier } from './modifiers/hide';
+import type { OffsetModifier } from './modifiers/offset';
+import type { EventListenersModifier } from './modifiers/eventListeners';
+import type { ComputeStylesModifier } from './modifiers/computeStyles';
+import type { ArrowModifier } from './modifiers/arrow';
+import type { PreventOverflowModifier } from './modifiers/preventOverflow';
+import type { ApplyStylesModifier } from './modifiers/applyStyles';
+
+export type Obj = { [key: string]: any };
+
+export type VisualViewport = EventTarget & {
+  width: number,
+  height: number,
+  offsetLeft: number,
+  offsetTop: number,
+  scale: number,
+};
+
+// This is a limited subset of the Window object, Flow doesn't provide one
+// so we define our own, with just the properties we need
+export type Window = {|
+  innerHeight: number,
+  offsetHeight: number,
+  innerWidth: number,
+  offsetWidth: number,
+  pageXOffset: number,
+  pageYOffset: number,
+  getComputedStyle: typeof getComputedStyle,
+  addEventListener(type: any, listener: any, optionsOrUseCapture?: any): void,
+  removeEventListener(
+    type: any,
+    listener: any,
+    optionsOrUseCapture?: any
+  ): void,
+  Element: Element,
+  HTMLElement: HTMLElement,
+  Node: Node,
+  toString(): '[object Window]',
+  devicePixelRatio: number,
+  visualViewport?: VisualViewport,
+  ShadowRoot: ShadowRoot,
+|};
+
+export type Rect = {|
+  width: number,
+  height: number,
+  x: number,
+  y: number,
+|};
+
+export type Offsets = {|
+  y: number,
+  x: number,
+|};
+
+export type PositioningStrategy = 'absolute' | 'fixed';
+
+export type StateRects = {|
+  reference: Rect,
+  popper: Rect,
+|};
+
+export type StateOffsets = {|
+  popper: Offsets,
+  arrow?: Offsets,
+|};
+
+type OffsetData = { [Placement]: Offsets };
+
+export type State = {|
+  elements: {|
+    reference: Element | VirtualElement,
+    popper: HTMLElement,
+    arrow?: HTMLElement,
+  |},
+  options: OptionsGeneric<any>,
+  placement: Placement,
+  strategy: PositioningStrategy,
+  orderedModifiers: Array<Modifier<any, any>>,
+  rects: StateRects,
+  scrollParents: {|
+    reference: Array<Element | Window | VisualViewport>,
+    popper: Array<Element | Window | VisualViewport>,
+  |},
+  styles: {|
+    [key: string]: $Shape<CSSStyleDeclaration>,
+  |},
+  attributes: {|
+    [key: string]: { [key: string]: string | boolean },
+  |},
+  modifiersData: {
+    arrow?: {
+      x?: number,
+      y?: number,
+      centerOffset: number,
+    },
+    hide?: {
+      isReferenceHidden: boolean,
+      hasPopperEscaped: boolean,
+      referenceClippingOffsets: SideObject,
+      popperEscapeOffsets: SideObject,
+    },
+    offset?: OffsetData,
+    preventOverflow?: Offsets,
+    popperOffsets?: Offsets,
+    [key: string]: any,
+  },
+  reset: boolean,
+|};
+
+type SetAction<S> = S | ((prev: S) => S);
+
+export type Instance = {|
+  state: State,
+  destroy: () => void,
+  forceUpdate: () => void,
+  update: () => Promise<$Shape<State>>,
+  setOptions: (
+    setOptionsAction: SetAction<$Shape<OptionsGeneric<any>>>
+  ) => Promise<$Shape<State>>,
+|};
+
+export type ModifierArguments<Options: Obj> = {
+  state: State,
+  instance: Instance,
+  options: $Shape<Options>,
+  name: string,
+};
+export type Modifier<Name, Options> = {|
+  name: Name,
+  enabled: boolean,
+  phase: ModifierPhases,
+  requires?: Array<string>,
+  requiresIfExists?: Array<string>,
+  fn: (ModifierArguments<Options>) => State | void,
+  effect?: (ModifierArguments<Options>) => (() => void) | void,
+  options?: $Shape<Options>,
+  data?: Obj,
+|};
+
+export type StrictModifiers =
+  | $Shape<OffsetModifier>
+  | $Shape<ApplyStylesModifier>
+  | $Shape<ArrowModifier>
+  | $Shape<HideModifier>
+  | $Shape<ComputeStylesModifier>
+  | $Shape<EventListenersModifier>
+  | $Shape<FlipModifier>
+  | $Shape<PreventOverflowModifier>
+  | $Shape<PopperOffsetsModifier>;
+
+export type EventListeners = {| scroll: boolean, resize: boolean |};
+
+export type Options = {|
+  placement: Placement,
+  modifiers: Array<$Shape<Modifier<any, any>>>,
+  strategy: PositioningStrategy,
+  onFirstUpdate?: ($Shape<State>) => void,
+|};
+
+export type OptionsGeneric<TModifier> = {|
+  placement: Placement,
+  modifiers: Array<TModifier>,
+  strategy: PositioningStrategy,
+  onFirstUpdate?: ($Shape<State>) => void,
+|};
+
+export type UpdateCallback = (State) => void;
+
+export type ClientRectObject = {|
+  x: number,
+  y: number,
+  top: number,
+  left: number,
+  right: number,
+  bottom: number,
+  width: number,
+  height: number,
+|};
+
+export type SideObject = {|
+  top: number,
+  left: number,
+  right: number,
+  bottom: number,
+|};
+
+export type Padding = number | $Shape<SideObject>;
+
+export type VirtualElement = {|
+  getBoundingClientRect: () => ClientRect | DOMRect,
+  contextElement?: Element,
+|};
diff --git a/popperjs/package/lib/utils/computeAutoPlacement.d.ts b/popperjs/package/lib/utils/computeAutoPlacement.d.ts
new file mode 100644
index 0000000..ba1f7ae
--- /dev/null
+++ b/popperjs/package/lib/utils/computeAutoPlacement.d.ts
@@ -0,0 +1,12 @@
+import type { State, Padding } from "../types";
+import type { Placement, ComputedPlacement, Boundary, RootBoundary } from "../enums";
+declare type Options = {
+    placement: Placement;
+    padding: Padding;
+    boundary: Boundary;
+    rootBoundary: RootBoundary;
+    flipVariations: boolean;
+    allowedAutoPlacements?: Array<Placement>;
+};
+export default function computeAutoPlacement(state: Partial<State>, options?: Options): Array<ComputedPlacement>;
+export {};
diff --git a/popperjs/package/lib/utils/computeAutoPlacement.js b/popperjs/package/lib/utils/computeAutoPlacement.js
new file mode 100644
index 0000000..12e27c8
--- /dev/null
+++ b/popperjs/package/lib/utils/computeAutoPlacement.js
@@ -0,0 +1,47 @@
+import getVariation from "./getVariation.js";
+import { variationPlacements, basePlacements, placements as allPlacements } from "../enums.js";
+import detectOverflow from "./detectOverflow.js";
+import getBasePlacement from "./getBasePlacement.js";
+export default function computeAutoPlacement(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      placement = _options.placement,
+      boundary = _options.boundary,
+      rootBoundary = _options.rootBoundary,
+      padding = _options.padding,
+      flipVariations = _options.flipVariations,
+      _options$allowedAutoP = _options.allowedAutoPlacements,
+      allowedAutoPlacements = _options$allowedAutoP === void 0 ? allPlacements : _options$allowedAutoP;
+  var variation = getVariation(placement);
+  var placements = variation ? flipVariations ? variationPlacements : variationPlacements.filter(function (placement) {
+    return getVariation(placement) === variation;
+  }) : basePlacements;
+  var allowedPlacements = placements.filter(function (placement) {
+    return allowedAutoPlacements.indexOf(placement) >= 0;
+  });
+
+  if (allowedPlacements.length === 0) {
+    allowedPlacements = placements;
+
+    if (process.env.NODE_ENV !== "production") {
+      console.error(['Popper: The `allowedAutoPlacements` option did not allow any', 'placements. Ensure the `placement` option matches the variation', 'of the allowed placements.', 'For example, "auto" cannot be used to allow "bottom-start".', 'Use "auto-start" instead.'].join(' '));
+    }
+  } // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...
+
+
+  var overflows = allowedPlacements.reduce(function (acc, placement) {
+    acc[placement] = detectOverflow(state, {
+      placement: placement,
+      boundary: boundary,
+      rootBoundary: rootBoundary,
+      padding: padding
+    })[getBasePlacement(placement)];
+    return acc;
+  }, {});
+  return Object.keys(overflows).sort(function (a, b) {
+    return overflows[a] - overflows[b];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/computeAutoPlacement.js.flow b/popperjs/package/lib/utils/computeAutoPlacement.js.flow
new file mode 100644
index 0000000..1e85f8c
--- /dev/null
+++ b/popperjs/package/lib/utils/computeAutoPlacement.js.flow
@@ -0,0 +1,85 @@
+// @flow
+import type { State, Padding } from '../types';
+import type {
+  Placement,
+  ComputedPlacement,
+  Boundary,
+  RootBoundary,
+} from '../enums';
+import getVariation from './getVariation';
+import {
+  variationPlacements,
+  basePlacements,
+  placements as allPlacements,
+} from '../enums';
+import detectOverflow from './detectOverflow';
+import getBasePlacement from './getBasePlacement';
+
+type Options = {
+  placement: Placement,
+  padding: Padding,
+  boundary: Boundary,
+  rootBoundary: RootBoundary,
+  flipVariations: boolean,
+  allowedAutoPlacements?: Array<Placement>,
+};
+
+type OverflowsMap = { [ComputedPlacement]: number };
+
+export default function computeAutoPlacement(
+  state: $Shape<State>,
+  options: Options = {}
+): Array<ComputedPlacement> {
+  const {
+    placement,
+    boundary,
+    rootBoundary,
+    padding,
+    flipVariations,
+    allowedAutoPlacements = allPlacements,
+  } = options;
+
+  const variation = getVariation(placement);
+
+  const placements = variation
+    ? flipVariations
+      ? variationPlacements
+      : variationPlacements.filter(
+          (placement) => getVariation(placement) === variation
+        )
+    : basePlacements;
+
+  let allowedPlacements = placements.filter(
+    (placement) => allowedAutoPlacements.indexOf(placement) >= 0
+  );
+
+  if (allowedPlacements.length === 0) {
+    allowedPlacements = placements;
+
+    if (false) {
+      console.error(
+        [
+          'Popper: The `allowedAutoPlacements` option did not allow any',
+          'placements. Ensure the `placement` option matches the variation',
+          'of the allowed placements.',
+          'For example, "auto" cannot be used to allow "bottom-start".',
+          'Use "auto-start" instead.',
+        ].join(' ')
+      );
+    }
+  }
+
+  // $FlowFixMe[incompatible-type]: Flow seems to have problems with two array unions...
+  const overflows: OverflowsMap = allowedPlacements.reduce((acc, placement) => {
+    acc[placement] = detectOverflow(state, {
+      placement,
+      boundary,
+      rootBoundary,
+      padding,
+    })[getBasePlacement(placement)];
+
+    return acc;
+  }, {});
+
+  return Object.keys(overflows).sort((a, b) => overflows[a] - overflows[b]);
+}
diff --git a/popperjs/package/lib/utils/computeOffsets.d.ts b/popperjs/package/lib/utils/computeOffsets.d.ts
new file mode 100644
index 0000000..cf02a68
--- /dev/null
+++ b/popperjs/package/lib/utils/computeOffsets.d.ts
@@ -0,0 +1,8 @@
+import type { Rect, PositioningStrategy, Offsets, ClientRectObject } from "../types";
+import { Placement } from "../enums";
+export default function computeOffsets({ reference, element, placement }: {
+    reference: Rect | ClientRectObject;
+    element: Rect | ClientRectObject;
+    strategy: PositioningStrategy;
+    placement?: Placement;
+}): Offsets;
diff --git a/popperjs/package/lib/utils/computeOffsets.js b/popperjs/package/lib/utils/computeOffsets.js
new file mode 100644
index 0000000..7a81690
--- /dev/null
+++ b/popperjs/package/lib/utils/computeOffsets.js
@@ -0,0 +1,70 @@
+import getBasePlacement from "./getBasePlacement.js";
+import getVariation from "./getVariation.js";
+import getMainAxisFromPlacement from "./getMainAxisFromPlacement.js";
+import { top, right, bottom, left, start, end } from "../enums.js";
+export default function computeOffsets(_ref) {
+  var reference = _ref.reference,
+      element = _ref.element,
+      placement = _ref.placement;
+  var basePlacement = placement ? getBasePlacement(placement) : null;
+  var variation = placement ? getVariation(placement) : null;
+  var commonX = reference.x + reference.width / 2 - element.width / 2;
+  var commonY = reference.y + reference.height / 2 - element.height / 2;
+  var offsets;
+
+  switch (basePlacement) {
+    case top:
+      offsets = {
+        x: commonX,
+        y: reference.y - element.height
+      };
+      break;
+
+    case bottom:
+      offsets = {
+        x: commonX,
+        y: reference.y + reference.height
+      };
+      break;
+
+    case right:
+      offsets = {
+        x: reference.x + reference.width,
+        y: commonY
+      };
+      break;
+
+    case left:
+      offsets = {
+        x: reference.x - element.width,
+        y: commonY
+      };
+      break;
+
+    default:
+      offsets = {
+        x: reference.x,
+        y: reference.y
+      };
+  }
+
+  var mainAxis = basePlacement ? getMainAxisFromPlacement(basePlacement) : null;
+
+  if (mainAxis != null) {
+    var len = mainAxis === 'y' ? 'height' : 'width';
+
+    switch (variation) {
+      case start:
+        offsets[mainAxis] = offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+        break;
+
+      case end:
+        offsets[mainAxis] = offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+        break;
+
+      default:
+    }
+  }
+
+  return offsets;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/computeOffsets.js.flow b/popperjs/package/lib/utils/computeOffsets.js.flow
new file mode 100644
index 0000000..404b56a
--- /dev/null
+++ b/popperjs/package/lib/utils/computeOffsets.js.flow
@@ -0,0 +1,82 @@
+// @flow
+import getBasePlacement from './getBasePlacement';
+import getVariation from './getVariation';
+import getMainAxisFromPlacement from './getMainAxisFromPlacement';
+import type {
+  Rect,
+  PositioningStrategy,
+  Offsets,
+  ClientRectObject,
+} from '../types';
+import { top, right, bottom, left, start, end, type Placement } from '../enums';
+
+export default function computeOffsets({
+  reference,
+  element,
+  placement,
+}: {
+  reference: Rect | ClientRectObject,
+  element: Rect | ClientRectObject,
+  strategy: PositioningStrategy,
+  placement?: Placement,
+}): Offsets {
+  const basePlacement = placement ? getBasePlacement(placement) : null;
+  const variation = placement ? getVariation(placement) : null;
+  const commonX = reference.x + reference.width / 2 - element.width / 2;
+  const commonY = reference.y + reference.height / 2 - element.height / 2;
+
+  let offsets;
+  switch (basePlacement) {
+    case top:
+      offsets = {
+        x: commonX,
+        y: reference.y - element.height,
+      };
+      break;
+    case bottom:
+      offsets = {
+        x: commonX,
+        y: reference.y + reference.height,
+      };
+      break;
+    case right:
+      offsets = {
+        x: reference.x + reference.width,
+        y: commonY,
+      };
+      break;
+    case left:
+      offsets = {
+        x: reference.x - element.width,
+        y: commonY,
+      };
+      break;
+    default:
+      offsets = {
+        x: reference.x,
+        y: reference.y,
+      };
+  }
+
+  const mainAxis = basePlacement
+    ? getMainAxisFromPlacement(basePlacement)
+    : null;
+
+  if (mainAxis != null) {
+    const len = mainAxis === 'y' ? 'height' : 'width';
+
+    switch (variation) {
+      case start:
+        offsets[mainAxis] =
+          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+        break;
+      case end:
+        offsets[mainAxis] =
+          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+        break;
+      default:
+    }
+  }
+
+  return offsets;
+}
diff --git a/popperjs/package/lib/utils/debounce.d.ts b/popperjs/package/lib/utils/debounce.d.ts
new file mode 100644
index 0000000..e0b5d5f
--- /dev/null
+++ b/popperjs/package/lib/utils/debounce.d.ts
@@ -0,0 +1 @@
+export default function debounce<T>(fn: (...args: Array<any>) => any): () => Promise<T>;
diff --git a/popperjs/package/lib/utils/debounce.js b/popperjs/package/lib/utils/debounce.js
new file mode 100644
index 0000000..15a78da
--- /dev/null
+++ b/popperjs/package/lib/utils/debounce.js
@@ -0,0 +1,15 @@
+export default function debounce(fn) {
+  var pending;
+  return function () {
+    if (!pending) {
+      pending = new Promise(function (resolve) {
+        Promise.resolve().then(function () {
+          pending = undefined;
+          resolve(fn());
+        });
+      });
+    }
+
+    return pending;
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/debounce.js.flow b/popperjs/package/lib/utils/debounce.js.flow
new file mode 100644
index 0000000..ff0a5d9
--- /dev/null
+++ b/popperjs/package/lib/utils/debounce.js.flow
@@ -0,0 +1,17 @@
+// @flow
+
+export default function debounce<T>(fn: Function): () => Promise<T> {
+  let pending;
+  return () => {
+    if (!pending) {
+      pending = new Promise<T>(resolve => {
+        Promise.resolve().then(() => {
+          pending = undefined;
+          resolve(fn());
+        });
+      });
+    }
+
+    return pending;
+  };
+}
diff --git a/popperjs/package/lib/utils/detectOverflow.d.ts b/popperjs/package/lib/utils/detectOverflow.d.ts
new file mode 100644
index 0000000..77f2cd4
--- /dev/null
+++ b/popperjs/package/lib/utils/detectOverflow.d.ts
@@ -0,0 +1,11 @@
+import type { State, SideObject, Padding } from "../types";
+import type { Placement, Boundary, RootBoundary, Context } from "../enums";
+export declare type Options = {
+    placement: Placement;
+    boundary: Boundary;
+    rootBoundary: RootBoundary;
+    elementContext: Context;
+    altBoundary: boolean;
+    padding: Padding;
+};
+export default function detectOverflow(state: State, options?: Partial<Options>): SideObject;
diff --git a/popperjs/package/lib/utils/detectOverflow.js b/popperjs/package/lib/utils/detectOverflow.js
new file mode 100644
index 0000000..493b8f9
--- /dev/null
+++ b/popperjs/package/lib/utils/detectOverflow.js
@@ -0,0 +1,63 @@
+import getClippingRect from "../dom-utils/getClippingRect.js";
+import getDocumentElement from "../dom-utils/getDocumentElement.js";
+import getBoundingClientRect from "../dom-utils/getBoundingClientRect.js";
+import computeOffsets from "./computeOffsets.js";
+import rectToClientRect from "./rectToClientRect.js";
+import { clippingParents, reference, popper, bottom, top, right, basePlacements, viewport } from "../enums.js";
+import { isElement } from "../dom-utils/instanceOf.js";
+import mergePaddingObject from "./mergePaddingObject.js";
+import expandToHashMap from "./expandToHashMap.js"; // eslint-disable-next-line import/no-unused-modules
+
+export default function detectOverflow(state, options) {
+  if (options === void 0) {
+    options = {};
+  }
+
+  var _options = options,
+      _options$placement = _options.placement,
+      placement = _options$placement === void 0 ? state.placement : _options$placement,
+      _options$boundary = _options.boundary,
+      boundary = _options$boundary === void 0 ? clippingParents : _options$boundary,
+      _options$rootBoundary = _options.rootBoundary,
+      rootBoundary = _options$rootBoundary === void 0 ? viewport : _options$rootBoundary,
+      _options$elementConte = _options.elementContext,
+      elementContext = _options$elementConte === void 0 ? popper : _options$elementConte,
+      _options$altBoundary = _options.altBoundary,
+      altBoundary = _options$altBoundary === void 0 ? false : _options$altBoundary,
+      _options$padding = _options.padding,
+      padding = _options$padding === void 0 ? 0 : _options$padding;
+  var paddingObject = mergePaddingObject(typeof padding !== 'number' ? padding : expandToHashMap(padding, basePlacements));
+  var altContext = elementContext === popper ? reference : popper;
+  var popperRect = state.rects.popper;
+  var element = state.elements[altBoundary ? altContext : elementContext];
+  var clippingClientRect = getClippingRect(isElement(element) ? element : element.contextElement || getDocumentElement(state.elements.popper), boundary, rootBoundary);
+  var referenceClientRect = getBoundingClientRect(state.elements.reference);
+  var popperOffsets = computeOffsets({
+    reference: referenceClientRect,
+    element: popperRect,
+    strategy: 'absolute',
+    placement: placement
+  });
+  var popperClientRect = rectToClientRect(Object.assign({}, popperRect, popperOffsets));
+  var elementClientRect = elementContext === popper ? popperClientRect : referenceClientRect; // positive = overflowing the clipping rect
+  // 0 or negative = within the clipping rect
+
+  var overflowOffsets = {
+    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+    bottom: elementClientRect.bottom - clippingClientRect.bottom + paddingObject.bottom,
+    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+    right: elementClientRect.right - clippingClientRect.right + paddingObject.right
+  };
+  var offsetData = state.modifiersData.offset; // Offsets can be applied only to the popper element
+
+  if (elementContext === popper && offsetData) {
+    var offset = offsetData[placement];
+    Object.keys(overflowOffsets).forEach(function (key) {
+      var multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+      var axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+      overflowOffsets[key] += offset[axis] * multiply;
+    });
+  }
+
+  return overflowOffsets;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/detectOverflow.js.flow b/popperjs/package/lib/utils/detectOverflow.js.flow
new file mode 100644
index 0000000..29cbabb
--- /dev/null
+++ b/popperjs/package/lib/utils/detectOverflow.js.flow
@@ -0,0 +1,109 @@
+// @flow
+import type { State, SideObject, Padding } from '../types';
+import type { Placement, Boundary, RootBoundary, Context } from '../enums';
+import getClippingRect from '../dom-utils/getClippingRect';
+import getDocumentElement from '../dom-utils/getDocumentElement';
+import getBoundingClientRect from '../dom-utils/getBoundingClientRect';
+import computeOffsets from './computeOffsets';
+import rectToClientRect from './rectToClientRect';
+import {
+  clippingParents,
+  reference,
+  popper,
+  bottom,
+  top,
+  right,
+  basePlacements,
+  viewport,
+} from '../enums';
+import { isElement } from '../dom-utils/instanceOf';
+import mergePaddingObject from './mergePaddingObject';
+import expandToHashMap from './expandToHashMap';
+
+// eslint-disable-next-line import/no-unused-modules
+export type Options = {
+  placement: Placement,
+  boundary: Boundary,
+  rootBoundary: RootBoundary,
+  elementContext: Context,
+  altBoundary: boolean,
+  padding: Padding,
+};
+
+export default function detectOverflow(
+  state: State,
+  options: $Shape<Options> = {}
+): SideObject {
+  const {
+    placement = state.placement,
+    boundary = clippingParents,
+    rootBoundary = viewport,
+    elementContext = popper,
+    altBoundary = false,
+    padding = 0,
+  } = options;
+
+  const paddingObject = mergePaddingObject(
+    typeof padding !== 'number'
+      ? padding
+      : expandToHashMap(padding, basePlacements)
+  );
+
+  const altContext = elementContext === popper ? reference : popper;
+
+  const popperRect = state.rects.popper;
+  const element = state.elements[altBoundary ? altContext : elementContext];
+
+  const clippingClientRect = getClippingRect(
+    isElement(element)
+      ? element
+      : element.contextElement || getDocumentElement(state.elements.popper),
+    boundary,
+    rootBoundary
+  );
+
+  const referenceClientRect = getBoundingClientRect(state.elements.reference);
+
+  const popperOffsets = computeOffsets({
+    reference: referenceClientRect,
+    element: popperRect,
+    strategy: 'absolute',
+    placement,
+  });
+
+  const popperClientRect = rectToClientRect({
+    ...popperRect,
+    ...popperOffsets,
+  });
+
+  const elementClientRect =
+    elementContext === popper ? popperClientRect : referenceClientRect;
+
+  // positive = overflowing the clipping rect
+  // 0 or negative = within the clipping rect
+  const overflowOffsets = {
+    top: clippingClientRect.top - elementClientRect.top + paddingObject.top,
+    bottom:
+      elementClientRect.bottom -
+      clippingClientRect.bottom +
+      paddingObject.bottom,
+    left: clippingClientRect.left - elementClientRect.left + paddingObject.left,
+    right:
+      elementClientRect.right - clippingClientRect.right + paddingObject.right,
+  };
+
+  const offsetData = state.modifiersData.offset;
+
+  // Offsets can be applied only to the popper element
+  if (elementContext === popper && offsetData) {
+    const offset = offsetData[placement];
+
+    Object.keys(overflowOffsets).forEach((key) => {
+      const multiply = [right, bottom].indexOf(key) >= 0 ? 1 : -1;
+      const axis = [top, bottom].indexOf(key) >= 0 ? 'y' : 'x';
+      overflowOffsets[key] += offset[axis] * multiply;
+    });
+  }
+
+  return overflowOffsets;
+}
diff --git a/popperjs/package/lib/utils/expandToHashMap.d.ts b/popperjs/package/lib/utils/expandToHashMap.d.ts
new file mode 100644
index 0000000..b0fb406
--- /dev/null
+++ b/popperjs/package/lib/utils/expandToHashMap.d.ts
@@ -0,0 +1,3 @@
+export default function expandToHashMap<T extends number | string | boolean, K extends string>(value: T, keys: Array<K>): {
+    [key: string]: T;
+};
diff --git a/popperjs/package/lib/utils/expandToHashMap.js b/popperjs/package/lib/utils/expandToHashMap.js
new file mode 100644
index 0000000..e428d58
--- /dev/null
+++ b/popperjs/package/lib/utils/expandToHashMap.js
@@ -0,0 +1,6 @@
+export default function expandToHashMap(value, keys) {
+  return keys.reduce(function (hashMap, key) {
+    hashMap[key] = value;
+    return hashMap;
+  }, {});
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/expandToHashMap.js.flow b/popperjs/package/lib/utils/expandToHashMap.js.flow
new file mode 100644
index 0000000..bfcc968
--- /dev/null
+++ b/popperjs/package/lib/utils/expandToHashMap.js.flow
@@ -0,0 +1,11 @@
+// @flow
+
+export default function expandToHashMap<
+  T: number | string | boolean,
+  K: string
+>(value: T, keys: Array<K>): { [key: string]: T } {
+  return keys.reduce((hashMap, key) => {
+    hashMap[key] = value;
+    return hashMap;
+  }, {});
+}
diff --git a/popperjs/package/lib/utils/format.d.ts b/popperjs/package/lib/utils/format.d.ts
new file mode 100644
index 0000000..32af6a0
--- /dev/null
+++ b/popperjs/package/lib/utils/format.d.ts
@@ -0,0 +1 @@
+export default function format(str: string, ...args: Array<string>): string;
diff --git a/popperjs/package/lib/utils/format.js b/popperjs/package/lib/utils/format.js
new file mode 100644
index 0000000..c0b8939
--- /dev/null
+++ b/popperjs/package/lib/utils/format.js
@@ -0,0 +1,9 @@
+export default function format(str) {
+  for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    args[_key - 1] = arguments[_key];
+  }
+
+  return [].concat(args).reduce(function (p, c) {
+    return p.replace(/%s/, c);
+  }, str);
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/format.js.flow b/popperjs/package/lib/utils/format.js.flow
new file mode 100644
index 0000000..45479ac
--- /dev/null
+++ b/popperjs/package/lib/utils/format.js.flow
@@ -0,0 +1,5 @@
+// @flow
+
+export default function format(str: string, ...args: Array<string>) {
+  return [...args].reduce((p, c) => p.replace(/%s/, c), str);
+}
diff --git a/popperjs/package/lib/utils/getAltAxis.d.ts b/popperjs/package/lib/utils/getAltAxis.d.ts
new file mode 100644
index 0000000..dc45614
--- /dev/null
+++ b/popperjs/package/lib/utils/getAltAxis.d.ts
@@ -0,0 +1 @@
+export default function getAltAxis(axis: "x" | "y"): "x" | "y";
diff --git a/popperjs/package/lib/utils/getAltAxis.js b/popperjs/package/lib/utils/getAltAxis.js
new file mode 100644
index 0000000..d834474
--- /dev/null
+++ b/popperjs/package/lib/utils/getAltAxis.js
@@ -0,0 +1,3 @@
+export default function getAltAxis(axis) {
+  return axis === 'x' ? 'y' : 'x';
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getAltAxis.js.flow b/popperjs/package/lib/utils/getAltAxis.js.flow
new file mode 100644
index 0000000..7835e03
--- /dev/null
+++ b/popperjs/package/lib/utils/getAltAxis.js.flow
@@ -0,0 +1,5 @@
+// @flow
+
+export default function getAltAxis(axis: 'x' | 'y'): 'x' | 'y' {
+  return axis === 'x' ? 'y' : 'x';
+}
diff --git a/popperjs/package/lib/utils/getAltLen.d.ts b/popperjs/package/lib/utils/getAltLen.d.ts
new file mode 100644
index 0000000..61b5211
--- /dev/null
+++ b/popperjs/package/lib/utils/getAltLen.d.ts
@@ -0,0 +1 @@
+export default function getAltLen(len: "width" | "height"): "width" | "height";
diff --git a/popperjs/package/lib/utils/getAltLen.js b/popperjs/package/lib/utils/getAltLen.js
new file mode 100644
index 0000000..eb68d19
--- /dev/null
+++ b/popperjs/package/lib/utils/getAltLen.js
@@ -0,0 +1,3 @@
+export default function getAltLen(len) {
+  return len === 'width' ? 'height' : 'width';
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getAltLen.js.flow b/popperjs/package/lib/utils/getAltLen.js.flow
new file mode 100644
index 0000000..ad484da
--- /dev/null
+++ b/popperjs/package/lib/utils/getAltLen.js.flow
@@ -0,0 +1,5 @@
+// @flow
+
+export default function getAltLen(len: 'width' | 'height'): 'width' | 'height' {
+  return len === 'width' ? 'height' : 'width';
+}
diff --git a/popperjs/package/lib/utils/getBasePlacement.d.ts b/popperjs/package/lib/utils/getBasePlacement.d.ts
new file mode 100644
index 0000000..533ed0e
--- /dev/null
+++ b/popperjs/package/lib/utils/getBasePlacement.d.ts
@@ -0,0 +1,2 @@
+import { BasePlacement, Placement, auto } from "../enums";
+export default function getBasePlacement(placement: Placement | typeof auto): BasePlacement;
diff --git a/popperjs/package/lib/utils/getBasePlacement.js b/popperjs/package/lib/utils/getBasePlacement.js
new file mode 100644
index 0000000..9eebf96
--- /dev/null
+++ b/popperjs/package/lib/utils/getBasePlacement.js
@@ -0,0 +1,4 @@
+import { auto } from "../enums.js";
+export default function getBasePlacement(placement) {
+  return placement.split('-')[0];
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getBasePlacement.js.flow b/popperjs/package/lib/utils/getBasePlacement.js.flow
new file mode 100644
index 0000000..56916a1
--- /dev/null
+++ b/popperjs/package/lib/utils/getBasePlacement.js.flow
@@ -0,0 +1,8 @@
+// @flow
+import { type BasePlacement, type Placement, auto } from '../enums';
+
+export default function getBasePlacement(
+  placement: Placement | typeof auto
+): BasePlacement {
+  return (placement.split('-')[0]: any);
+}
diff --git a/popperjs/package/lib/utils/getFreshSideObject.d.ts b/popperjs/package/lib/utils/getFreshSideObject.d.ts
new file mode 100644
index 0000000..e820ffd
--- /dev/null
+++ b/popperjs/package/lib/utils/getFreshSideObject.d.ts
@@ -0,0 +1,2 @@
+import type { SideObject } from "../types";
+export default function getFreshSideObject(): SideObject;
diff --git a/popperjs/package/lib/utils/getFreshSideObject.js b/popperjs/package/lib/utils/getFreshSideObject.js
new file mode 100644
index 0000000..fcec47e
--- /dev/null
+++ b/popperjs/package/lib/utils/getFreshSideObject.js
@@ -0,0 +1,8 @@
+export default function getFreshSideObject() {
+  return {
+    top: 0,
+    right: 0,
+    bottom: 0,
+    left: 0
+  };
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getFreshSideObject.js.flow b/popperjs/package/lib/utils/getFreshSideObject.js.flow
new file mode 100644
index 0000000..1b57a5b
--- /dev/null
+++ b/popperjs/package/lib/utils/getFreshSideObject.js.flow
@@ -0,0 +1,11 @@
+// @flow
+import type { SideObject } from '../types';
+
+export default function getFreshSideObject(): SideObject {
+  return {
+    top: 0,
+    right: 0,
+    bottom: 0,
+    left: 0,
+  };
+}
diff --git a/popperjs/package/lib/utils/getMainAxisFromPlacement.d.ts b/popperjs/package/lib/utils/getMainAxisFromPlacement.d.ts
new file mode 100644
index 0000000..0fda65c
--- /dev/null
+++ b/popperjs/package/lib/utils/getMainAxisFromPlacement.d.ts
@@ -0,0 +1,2 @@
+import type { Placement } from "../enums";
+export default function getMainAxisFromPlacement(placement: Placement): "x" | "y";
diff --git a/popperjs/package/lib/utils/getMainAxisFromPlacement.js b/popperjs/package/lib/utils/getMainAxisFromPlacement.js
new file mode 100644
index 0000000..fe186b3
--- /dev/null
+++ b/popperjs/package/lib/utils/getMainAxisFromPlacement.js
@@ -0,0 +1,3 @@
+export default function getMainAxisFromPlacement(placement) {
+  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getMainAxisFromPlacement.js.flow b/popperjs/package/lib/utils/getMainAxisFromPlacement.js.flow
new file mode 100644
index 0000000..93fa806
--- /dev/null
+++ b/popperjs/package/lib/utils/getMainAxisFromPlacement.js.flow
@@ -0,0 +1,8 @@
+// @flow
+import type { Placement } from '../enums';
+
+export default function getMainAxisFromPlacement(
+  placement: Placement
+): 'x' | 'y' {
+  return ['top', 'bottom'].indexOf(placement) >= 0 ? 'x' : 'y';
+}
diff --git a/popperjs/package/lib/utils/getOppositePlacement.d.ts b/popperjs/package/lib/utils/getOppositePlacement.d.ts
new file mode 100644
index 0000000..b02a9c0
--- /dev/null
+++ b/popperjs/package/lib/utils/getOppositePlacement.d.ts
@@ -0,0 +1,2 @@
+import type { Placement } from "../enums";
+export default function getOppositePlacement(placement: Placement): Placement;
diff --git a/popperjs/package/lib/utils/getOppositePlacement.js b/popperjs/package/lib/utils/getOppositePlacement.js
new file mode 100644
index 0000000..180ec6e
--- /dev/null
+++ b/popperjs/package/lib/utils/getOppositePlacement.js
@@ -0,0 +1,11 @@
+var hash = {
+  left: 'right',
+  right: 'left',
+  bottom: 'top',
+  top: 'bottom'
+};
+export default function getOppositePlacement(placement) {
+  return placement.replace(/left|right|bottom|top/g, function (matched) {
+    return hash[matched];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getOppositePlacement.js.flow b/popperjs/package/lib/utils/getOppositePlacement.js.flow
new file mode 100644
index 0000000..8decc57
--- /dev/null
+++ b/popperjs/package/lib/utils/getOppositePlacement.js.flow
@@ -0,0 +1,11 @@
+// @flow
+import type { Placement } from '../enums';
+
+const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
+
+export default function getOppositePlacement(placement: Placement): Placement {
+  return (placement.replace(
+    /left|right|bottom|top/g,
+    matched => hash[matched]
+  ): any);
+}
diff --git a/popperjs/package/lib/utils/getOppositeVariationPlacement.d.ts b/popperjs/package/lib/utils/getOppositeVariationPlacement.d.ts
new file mode 100644
index 0000000..c37be91
--- /dev/null
+++ b/popperjs/package/lib/utils/getOppositeVariationPlacement.d.ts
@@ -0,0 +1,2 @@
+import type { Placement } from "../enums";
+export default function getOppositeVariationPlacement(placement: Placement): Placement;
diff --git a/popperjs/package/lib/utils/getOppositeVariationPlacement.js b/popperjs/package/lib/utils/getOppositeVariationPlacement.js
new file mode 100644
index 0000000..379d071
--- /dev/null
+++ b/popperjs/package/lib/utils/getOppositeVariationPlacement.js
@@ -0,0 +1,9 @@
+var hash = {
+  start: 'end',
+  end: 'start'
+};
+export default function getOppositeVariationPlacement(placement) {
+  return placement.replace(/start|end/g, function (matched) {
+    return hash[matched];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getOppositeVariationPlacement.js.flow b/popperjs/package/lib/utils/getOppositeVariationPlacement.js.flow
new file mode 100644
index 0000000..2887948
--- /dev/null
+++ b/popperjs/package/lib/utils/getOppositeVariationPlacement.js.flow
@@ -0,0 +1,10 @@
+// @flow
+import type { Placement } from '../enums';
+
+const hash = { start: 'end', end: 'start' };
+
+export default function getOppositeVariationPlacement(
+  placement: Placement
+): Placement {
+  return (placement.replace(/start|end/g, matched => hash[matched]): any);
+}
diff --git a/popperjs/package/lib/utils/getVariation.d.ts b/popperjs/package/lib/utils/getVariation.d.ts
new file mode 100644
index 0000000..ae830e9
--- /dev/null
+++ b/popperjs/package/lib/utils/getVariation.d.ts
@@ -0,0 +1,2 @@
+import { Variation, Placement } from "../enums";
+export default function getVariation(placement: Placement): Variation | null | undefined;
diff --git a/popperjs/package/lib/utils/getVariation.js b/popperjs/package/lib/utils/getVariation.js
new file mode 100644
index 0000000..c760df2
--- /dev/null
+++ b/popperjs/package/lib/utils/getVariation.js
@@ -0,0 +1,3 @@
+export default function getVariation(placement) {
+  return placement.split('-')[1];
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/getVariation.js.flow b/popperjs/package/lib/utils/getVariation.js.flow
new file mode 100644
index 0000000..d0ead8a
--- /dev/null
+++ b/popperjs/package/lib/utils/getVariation.js.flow
@@ -0,0 +1,6 @@
+// @flow
+import { type Variation, type Placement } from '../enums';
+
+export default function getVariation(placement: Placement): ?Variation {
+  return (placement.split('-')[1]: any);
+}
diff --git a/popperjs/package/lib/utils/math.d.ts b/popperjs/package/lib/utils/math.d.ts
new file mode 100644
index 0000000..2fbf475
--- /dev/null
+++ b/popperjs/package/lib/utils/math.d.ts
@@ -0,0 +1,3 @@
+export declare const max: (...values: number[]) => number;
+export declare const min: (...values: number[]) => number;
+export declare const round: (x: number) => number;
diff --git a/popperjs/package/lib/utils/math.js b/popperjs/package/lib/utils/math.js
new file mode 100644
index 0000000..d92a000
--- /dev/null
+++ b/popperjs/package/lib/utils/math.js
@@ -0,0 +1,3 @@
+export var max = Math.max;
+export var min = Math.min;
+export var round = Math.round;
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/math.js.flow b/popperjs/package/lib/utils/math.js.flow
new file mode 100644
index 0000000..80f0e44
--- /dev/null
+++ b/popperjs/package/lib/utils/math.js.flow
@@ -0,0 +1,4 @@
+// @flow
+export const max = Math.max;
+export const min = Math.min;
+export const round = Math.round;
diff --git a/popperjs/package/lib/utils/mergeByName.d.ts b/popperjs/package/lib/utils/mergeByName.d.ts
new file mode 100644
index 0000000..3ca484d
--- /dev/null
+++ b/popperjs/package/lib/utils/mergeByName.d.ts
@@ -0,0 +1,2 @@
+import type { Modifier } from "../types";
+export default function mergeByName(modifiers: Array<Partial<Modifier<any, any>>>): Array<Partial<Modifier<any, any>>>;
diff --git a/popperjs/package/lib/utils/mergeByName.js b/popperjs/package/lib/utils/mergeByName.js
new file mode 100644
index 0000000..35f508a
--- /dev/null
+++ b/popperjs/package/lib/utils/mergeByName.js
@@ -0,0 +1,14 @@
+export default function mergeByName(modifiers) {
+  var merged = modifiers.reduce(function (merged, current) {
+    var existing = merged[current.name];
+    merged[current.name] = existing ? Object.assign({}, existing, current, {
+      options: Object.assign({}, existing.options, current.options),
+      data: Object.assign({}, existing.data, current.data)
+    }) : current;
+    return merged;
+  }, {}); // IE11 does not support Object.values
+
+  return Object.keys(merged).map(function (key) {
+    return merged[key];
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/mergeByName.js.flow b/popperjs/package/lib/utils/mergeByName.js.flow
new file mode 100644
index 0000000..2d0377f
--- /dev/null
+++ b/popperjs/package/lib/utils/mergeByName.js.flow
@@ -0,0 +1,22 @@
+// @flow
+import type { Modifier } from '../types';
+
+export default function mergeByName(
+  modifiers: Array<$Shape<Modifier<any, any>>>
+): Array<$Shape<Modifier<any, any>>> {
+  const merged = modifiers.reduce((merged, current) => {
+    const existing = merged[current.name];
+    merged[current.name] = existing
+      ? {
+          ...existing,
+          ...current,
+          options: { ...existing.options, ...current.options },
+          data: { ...existing.data, ...current.data },
+        }
+      : current;
+    return merged;
+  }, {});
+
+  // IE11 does not support Object.values
+  return Object.keys(merged).map(key => merged[key]);
+}
diff --git a/popperjs/package/lib/utils/mergePaddingObject.d.ts b/popperjs/package/lib/utils/mergePaddingObject.d.ts
new file mode 100644
index 0000000..68f87bf
--- /dev/null
+++ b/popperjs/package/lib/utils/mergePaddingObject.d.ts
@@ -0,0 +1,2 @@
+import type { SideObject } from "../types";
+export default function mergePaddingObject(paddingObject: Partial<SideObject>): SideObject;
diff --git a/popperjs/package/lib/utils/mergePaddingObject.js b/popperjs/package/lib/utils/mergePaddingObject.js
new file mode 100644
index 0000000..26af6c5
--- /dev/null
+++ b/popperjs/package/lib/utils/mergePaddingObject.js
@@ -0,0 +1,4 @@
+import getFreshSideObject from "./getFreshSideObject.js";
+export default function mergePaddingObject(paddingObject) {
+  return Object.assign({}, getFreshSideObject(), paddingObject);
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/mergePaddingObject.js.flow b/popperjs/package/lib/utils/mergePaddingObject.js.flow
new file mode 100644
index 0000000..a2db661
--- /dev/null
+++ b/popperjs/package/lib/utils/mergePaddingObject.js.flow
@@ -0,0 +1,12 @@
+// @flow
+import type { SideObject } from '../types';
+import getFreshSideObject from './getFreshSideObject';
+
+export default function mergePaddingObject(
+  paddingObject: $Shape<SideObject>
+): SideObject {
+  return {
+    ...getFreshSideObject(),
+    ...paddingObject,
+  };
+}
diff --git a/popperjs/package/lib/utils/orderModifiers.d.ts b/popperjs/package/lib/utils/orderModifiers.d.ts
new file mode 100644
index 0000000..aea99d7
--- /dev/null
+++ b/popperjs/package/lib/utils/orderModifiers.d.ts
@@ -0,0 +1,2 @@
+import type { Modifier } from "../types";
+export default function orderModifiers(modifiers: Array<Modifier<any, any>>): Array<Modifier<any, any>>;
diff --git a/popperjs/package/lib/utils/orderModifiers.js b/popperjs/package/lib/utils/orderModifiers.js
new file mode 100644
index 0000000..82572bc
--- /dev/null
+++ b/popperjs/package/lib/utils/orderModifiers.js
@@ -0,0 +1,44 @@
+import { modifierPhases } from "../enums.js"; // source: https://stackoverflow.com/questions/49875255
+
+function order(modifiers) {
+  var map = new Map();
+  var visited = new Set();
+  var result = [];
+  modifiers.forEach(function (modifier) {
+    map.set(modifier.name, modifier);
+  }); // On visiting object, check for its dependencies and visit them recursively
+
+  function sort(modifier) {
+    visited.add(modifier.name);
+    var requires = [].concat(modifier.requires || [], modifier.requiresIfExists || []);
+    requires.forEach(function (dep) {
+      if (!visited.has(dep)) {
+        var depModifier = map.get(dep);
+
+        if (depModifier) {
+          sort(depModifier);
+        }
+      }
+    });
+    result.push(modifier);
+  }
+
+  modifiers.forEach(function (modifier) {
+    if (!visited.has(modifier.name)) {
+      // check for visited object
+      sort(modifier);
+    }
+  });
+  return result;
+}
+
+export default function orderModifiers(modifiers) {
+  // order based on dependencies
+  var orderedModifiers = order(modifiers); // order based on phase
+
+  return modifierPhases.reduce(function (acc, phase) {
+    return acc.concat(orderedModifiers.filter(function (modifier) {
+      return modifier.phase === phase;
+    }));
+  }, []);
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/orderModifiers.js.flow b/popperjs/package/lib/utils/orderModifiers.js.flow
new file mode 100644
index 0000000..8094d6e
--- /dev/null
+++ b/popperjs/package/lib/utils/orderModifiers.js.flow
@@ -0,0 +1,59 @@
+// @flow
+import type { Modifier } from '../types';
+import { modifierPhases } from '../enums';
+
+// source: https://stackoverflow.com/questions/49875255
+function order(modifiers) {
+  const map = new Map();
+  const visited = new Set();
+  const result = [];
+
+  modifiers.forEach(modifier => {
+    map.set(modifier.name, modifier);
+  });
+
+  // On visiting object, check for its dependencies and visit them recursively
+  function sort(modifier: Modifier<any, any>) {
+    visited.add(modifier.name);
+
+    const requires = [
+      ...(modifier.requires || []),
+      ...(modifier.requiresIfExists || []),
+    ];
+
+    requires.forEach(dep => {
+      if (!visited.has(dep)) {
+        const depModifier = map.get(dep);
+
+        if (depModifier) {
+          sort(depModifier);
+        }
+      }
+    });
+
+    result.push(modifier);
+  }
+
+  modifiers.forEach(modifier => {
+    if (!visited.has(modifier.name)) {
+      // check for visited object
+      sort(modifier);
+    }
+  });
+
+  return result;
+}
+
+export default function orderModifiers(
+  modifiers: Array<Modifier<any, any>>
+): Array<Modifier<any, any>> {
+  // order based on dependencies
+  const orderedModifiers = order(modifiers);
+
+  // order based on phase
+  return modifierPhases.reduce((acc, phase) => {
+    return acc.concat(
+      orderedModifiers.filter(modifier => modifier.phase === phase)
+    );
+  }, []);
+}
diff --git a/popperjs/package/lib/utils/rectToClientRect.d.ts b/popperjs/package/lib/utils/rectToClientRect.d.ts
new file mode 100644
index 0000000..5489294
--- /dev/null
+++ b/popperjs/package/lib/utils/rectToClientRect.d.ts
@@ -0,0 +1,2 @@
+import type { Rect, ClientRectObject } from "../types";
+export default function rectToClientRect(rect: Rect): ClientRectObject;
diff --git a/popperjs/package/lib/utils/rectToClientRect.js b/popperjs/package/lib/utils/rectToClientRect.js
new file mode 100644
index 0000000..5685476
--- /dev/null
+++ b/popperjs/package/lib/utils/rectToClientRect.js
@@ -0,0 +1,8 @@
+export default function rectToClientRect(rect) {
+  return Object.assign({}, rect, {
+    left: rect.x,
+    top: rect.y,
+    right: rect.x + rect.width,
+    bottom: rect.y + rect.height
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/rectToClientRect.js.flow b/popperjs/package/lib/utils/rectToClientRect.js.flow
new file mode 100644
index 0000000..4e05a51
--- /dev/null
+++ b/popperjs/package/lib/utils/rectToClientRect.js.flow
@@ -0,0 +1,12 @@
+// @flow
+import type { Rect, ClientRectObject } from '../types';
+
+export default function rectToClientRect(rect: Rect): ClientRectObject {
+  return {
+    ...rect,
+    left: rect.x,
+    top: rect.y,
+    right: rect.x + rect.width,
+    bottom: rect.y + rect.height,
+  };
+}
diff --git a/popperjs/package/lib/utils/uniqueBy.d.ts b/popperjs/package/lib/utils/uniqueBy.d.ts
new file mode 100644
index 0000000..2549f7d
--- /dev/null
+++ b/popperjs/package/lib/utils/uniqueBy.d.ts
@@ -0,0 +1 @@
+export default function uniqueBy<T>(arr: Array<T>, fn: (arg0: T) => any): Array<T>;
diff --git a/popperjs/package/lib/utils/uniqueBy.js b/popperjs/package/lib/utils/uniqueBy.js
new file mode 100644
index 0000000..5e083f3
--- /dev/null
+++ b/popperjs/package/lib/utils/uniqueBy.js
@@ -0,0 +1,11 @@
+export default function uniqueBy(arr, fn) {
+  var identifiers = new Set();
+  return arr.filter(function (item) {
+    var identifier = fn(item);
+
+    if (!identifiers.has(identifier)) {
+      identifiers.add(identifier);
+      return true;
+    }
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/uniqueBy.js.flow b/popperjs/package/lib/utils/uniqueBy.js.flow
new file mode 100644
index 0000000..0f79ae9
--- /dev/null
+++ b/popperjs/package/lib/utils/uniqueBy.js.flow
@@ -0,0 +1,14 @@
+// @flow
+
+export default function uniqueBy<T>(arr: Array<T>, fn: T => any): Array<T> {
+  const identifiers = new Set();
+
+  return arr.filter(item => {
+    const identifier = fn(item);
+
+    if (!identifiers.has(identifier)) {
+      identifiers.add(identifier);
+      return true;
+    }
+  });
+}
diff --git a/popperjs/package/lib/utils/validateModifiers.d.ts b/popperjs/package/lib/utils/validateModifiers.d.ts
new file mode 100644
index 0000000..90b496e
--- /dev/null
+++ b/popperjs/package/lib/utils/validateModifiers.d.ts
@@ -0,0 +1 @@
+export default function validateModifiers(modifiers: Array<any>): void;
diff --git a/popperjs/package/lib/utils/validateModifiers.js b/popperjs/package/lib/utils/validateModifiers.js
new file mode 100644
index 0000000..5bddf51
--- /dev/null
+++ b/popperjs/package/lib/utils/validateModifiers.js
@@ -0,0 +1,81 @@
+import format from "./format.js";
+import { modifierPhases } from "../enums.js";
+var INVALID_MODIFIER_ERROR = 'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+var MISSING_DEPENDENCY_ERROR = 'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+var VALID_PROPERTIES = ['name', 'enabled', 'phase', 'fn', 'effect', 'requires', 'options'];
+export default function validateModifiers(modifiers) {
+  modifiers.forEach(function (modifier) {
+    [].concat(Object.keys(modifier), VALID_PROPERTIES) // IE11-compatible replacement for `new Set(iterable)`
+    .filter(function (value, index, self) {
+      return self.indexOf(value) === index;
+    }).forEach(function (key) {
+      switch (key) {
+        case 'name':
+          if (typeof modifier.name !== 'string') {
+            console.error(format(INVALID_MODIFIER_ERROR, String(modifier.name), '"name"', '"string"', "\"" + String(modifier.name) + "\""));
+          }
+
+          break;
+
+        case 'enabled':
+          if (typeof modifier.enabled !== 'boolean') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"enabled"', '"boolean"', "\"" + String(modifier.enabled) + "\""));
+          }
+
+          break;
+
+        case 'phase':
+          if (modifierPhases.indexOf(modifier.phase) < 0) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"phase"', "either " + modifierPhases.join(', '), "\"" + String(modifier.phase) + "\""));
+          }
+
+          break;
+
+        case 'fn':
+          if (typeof modifier.fn !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"fn"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'effect':
+          if (modifier.effect != null && typeof modifier.effect !== 'function') {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"effect"', '"function"', "\"" + String(modifier.fn) + "\""));
+          }
+
+          break;
+
+        case 'requires':
+          if (modifier.requires != null && !Array.isArray(modifier.requires)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requires"', '"array"', "\"" + String(modifier.requires) + "\""));
+          }
+
+          break;
+
+        case 'requiresIfExists':
+          if (!Array.isArray(modifier.requiresIfExists)) {
+            console.error(format(INVALID_MODIFIER_ERROR, modifier.name, '"requiresIfExists"', '"array"', "\"" + String(modifier.requiresIfExists) + "\""));
+          }
+
+          break;
+
+        case 'options':
+        case 'data':
+          break;
+
+        default:
+          console.error("PopperJS: an invalid property has been provided to the \"" + modifier.name + "\" modifier, valid properties are " + VALID_PROPERTIES.map(function (s) {
+            return "\"" + s + "\"";
+          }).join(', ') + "; but \"" + key + "\" was provided.");
+      }
+
+      modifier.requires && modifier.requires.forEach(function (requirement) {
+        if (modifiers.find(function (mod) {
+          return mod.name === requirement;
+        }) == null) {
+          console.error(format(MISSING_DEPENDENCY_ERROR, String(modifier.name), requirement, requirement));
+        }
+      });
+    });
+  });
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/validateModifiers.js.flow b/popperjs/package/lib/utils/validateModifiers.js.flow
new file mode 100644
index 0000000..889e5a3
--- /dev/null
+++ b/popperjs/package/lib/utils/validateModifiers.js.flow
@@ -0,0 +1,151 @@
+// @flow
+import format from './format';
+import { modifierPhases } from '../enums';
+
+const INVALID_MODIFIER_ERROR =
+  'Popper: modifier "%s" provided an invalid %s property, expected %s but got %s';
+const MISSING_DEPENDENCY_ERROR =
+  'Popper: modifier "%s" requires "%s", but "%s" modifier is not available';
+const VALID_PROPERTIES = [
+  'name',
+  'enabled',
+  'phase',
+  'fn',
+  'effect',
+  'requires',
+  'options',
+];
+
+export default function validateModifiers(modifiers: Array<any>): void {
+  modifiers.forEach((modifier) => {
+    [...Object.keys(modifier), ...VALID_PROPERTIES]
+      // IE11-compatible replacement for `new Set(iterable)`
+      .filter((value, index, self) => self.indexOf(value) === index)
+      .forEach((key) => {
+        switch (key) {
+          case 'name':
+            if (typeof modifier.name !== 'string') {
+              console.error(
+                format(
+                  INVALID_MODIFIER_ERROR,
+                  String(modifier.name),
+                  '"name"',
+                  '"string"',
+                  `"${String(modifier.name)}"`
+                )
+              );
+            }
+            break;
+          case 'enabled':
+            if (typeof modifier.enabled !== 'boolean') {
+              console.error(
+                format(
+                  INVALID_MODIFIER_ERROR,
+                  modifier.name,
+                  '"enabled"',
+                  '"boolean"',
+                  `"${String(modifier.enabled)}"`
+                )
+              );
+            }
+            break;
+          case 'phase':
+            if (modifierPhases.indexOf(modifier.phase) < 0) {
+              console.error(
+                format(
+                  INVALID_MODIFIER_ERROR,
+                  modifier.name,
+                  '"phase"',
+                  `either ${modifierPhases.join(', ')}`,
+                  `"${String(modifier.phase)}"`
+                )
+              );
+            }
+            break;
+          case 'fn':
+            if (typeof modifier.fn !== 'function') {
+              console.error(
+                format(
+                  INVALID_MODIFIER_ERROR,
+                  modifier.name,
+                  '"fn"',
+                  '"function"',
+                  `"${String(modifier.fn)}"`
+                )
+              );
+            }
+            break;
+          case 'effect':
+            if (
+              modifier.effect != null &&
+              typeof modifier.effect !== 'function'
+            ) {
+              console.error(
+                format(
+                  INVALID_MODIFIER_ERROR,
+                  modifier.name,
+                  '"effect"',
+                  '"function"',
+                  `"${String(modifier.fn)}"`
+                )
+              );
+            }
+            break;
+          case 'requires':
+            if (
+              modifier.requires != null &&
+              !Array.isArray(modifier.requires)
+            ) {
+              console.error(
+                format(
+                  INVALID_MODIFIER_ERROR,
+                  modifier.name,
+                  '"requires"',
+                  '"array"',
+                  `"${String(modifier.requires)}"`
+                )
+              );
+            }
+            break;
+          case 'requiresIfExists':
+            if (!Array.isArray(modifier.requiresIfExists)) {
+              console.error(
+                format(
+                  INVALID_MODIFIER_ERROR,
+                  modifier.name,
+                  '"requiresIfExists"',
+                  '"array"',
+                  `"${String(modifier.requiresIfExists)}"`
+                )
+              );
+            }
+            break;
+          case 'options':
+          case 'data':
+            break;
+          default:
+            console.error(
+              `PopperJS: an invalid property has been provided to the "${
+                modifier.name
+              }" modifier, valid properties are ${VALID_PROPERTIES.map(
+                (s) => `"${s}"`
+              ).join(', ')}; but "${key}" was provided.`
+            );
+        }
+
+        modifier.requires &&
+          modifier.requires.forEach((requirement) => {
+            if (modifiers.find((mod) => mod.name === requirement) == null) {
+              console.error(
+                format(
+                  MISSING_DEPENDENCY_ERROR,
+                  String(modifier.name),
+                  requirement,
+                  requirement
+                )
+              );
+            }
+          });
+      });
+  });
+}
diff --git a/popperjs/package/lib/utils/within.d.ts b/popperjs/package/lib/utils/within.d.ts
new file mode 100644
index 0000000..46be6a4
--- /dev/null
+++ b/popperjs/package/lib/utils/within.d.ts
@@ -0,0 +1,2 @@
+export declare function within(min: number, value: number, max: number): number;
+export declare function withinMaxClamp(min: number, value: number, max: number): number;
diff --git a/popperjs/package/lib/utils/within.js b/popperjs/package/lib/utils/within.js
new file mode 100644
index 0000000..da7bf76
--- /dev/null
+++ b/popperjs/package/lib/utils/within.js
@@ -0,0 +1,8 @@
+import { max as mathMax, min as mathMin } from "./math.js";
+export function within(min, value, max) {
+  return mathMax(min, mathMin(value, max));
+}
+export function withinMaxClamp(min, value, max) {
+  var v = within(min, value, max);
+  return v > max ? max : v;
+}
\ No newline at end of file
diff --git a/popperjs/package/lib/utils/within.js.flow b/popperjs/package/lib/utils/within.js.flow
new file mode 100644
index 0000000..bc946f2
--- /dev/null
+++ b/popperjs/package/lib/utils/within.js.flow
@@ -0,0 +1,11 @@
+// @flow
+import { max as mathMax, min as mathMin } from './math';
+
+export function within(min: number, value: number, max: number): number {
+  return mathMax(min, mathMin(value, max));
+}
+
+export function withinMaxClamp(min: number, value: number, max: number) {
+  const v = within(min, value, max);
+  return v > max ? max : v;
+}
diff --git a/popperjs/package/package.json b/popperjs/package/package.json
new file mode 100644
index 0000000..df91f3d
--- /dev/null
+++ b/popperjs/package/package.json
@@ -0,0 +1,119 @@
+{
+  "name": "@popperjs/core",
+  "version": "2.11.0",
+  "description": "Tooltip and Popover Positioning Engine",
+  "main": "dist/cjs/popper.js",
+  "main:umd": "dist/umd/popper.js",
+  "module": "lib/index.js",
+  "unpkg": "dist/umd/popper.min.js",
+  "author": "Federico Zivolo <federico.zivolo@gmail.com>",
+  "license": "MIT",
+  "repository": "github:popperjs/popper-core",
+  "keywords": [
+    "tooltip",
+    "popover",
+    "dropdown",
+    "popup",
+    "popper",
+    "positioning engine"
+  ],
+  "funding": {
+    "type": "opencollective",
+    "url": "https://opencollective.com/popperjs"
+  },
+  "files": [
+    "index.d.ts",
+    "/dist",
+    "/lib"
+  ],
+  "sideEffects": false,
+  "scripts": {
+    "clean": "rimraf lib && rimraf dist && rimraf test/visual/dist",
+    "test": "yarn test:unit && yarn test:functional",
+    "test:unit": "jest --coverage src",
+    "test:functional": "DEV_PORT=`get-port` jest tests/functional",
+    "test:flow": "flow",
+    "test:typescript": "tsc --project tests/typescript/tsconfig.json",
+    "test:eslint": "eslint .",
+    "dev": "NODE_ENV=dev concurrently 'yarn serve' 'yarn build:dev --watch'",
+    "serve": "serve -l ${DEV_PORT:-5000} tests/visual",
+    "build": "yarn clean && yarn build:es && yarn build:esbrowser && yarn build:bundles && yarn build:flow && yarn build:typescript",
+    "build:es": "babel src -d lib --ignore '**/*.test.js','**/__mocks__'",
+    "build:esbrowser": "BROWSER_COMPAT=true yarn build:es -d dist/esm",
+    "build:bundles": "rollup -c .config/rollup.config.js",
+    "build:dev": "NODE_ENV=dev babel src -d tests/visual/dist",
+    "build:flow": "flow-copy-source --ignore \"**/*.test.js\" src lib && replace-in-files --string=__DEV__ --replacement=false 'lib/**/*.flow'",
+    "build:typescript": "rimraf dist/typescript; flow-to-ts \"src/**/*.js\" --write --inline-utility-types; tsc-silent --project .config/tsconfig.json --createSourceFile .config/createSourceFile.js --suppress @; rimraf \"src/**/*.ts\"",
+    "prepublishOnly": "yarn build && pinst --disable",
+    "_postinstall": "husky install .config/husky",
+    "postpublish": "pinst --enable"
+  },
+  "prettier": {
+    "semi": true,
+    "trailingComma": "es5",
+    "singleQuote": true,
+    "proseWrap": "always"
+  },
+  "babel": {
+    "extends": "./.config/babel.config"
+  },
+  "jest": {
+    "preset": "./.config/jest.config"
+  },
+  "eslintConfig": {
+    "extends": "./.config/eslint.config"
+  },
+  "husky": {
+    "hooks": {
+      "pre-commit": "pretty-quick --staged"
+    }
+  },
+  "devDependencies": {
+    "@ampproject/rollup-plugin-closure-compiler": "^0.26.0",
+    "@atomico/rollup-plugin-sizes": "^1.1.4",
+    "@babel/cli": "^7.12.17",
+    "@babel/core": "^7.12.17",
+    "@babel/plugin-transform-flow-strip-types": "^7.12.13",
+    "@babel/plugin-transform-runtime": "^7.12.17",
+    "@babel/preset-env": "^7.12.17",
+    "@fezvrasta/tsc-silent": "^1.3.0",
+    "@khanacademy/flow-to-ts": "^0.3.0",
+    "@rollup/plugin-babel": "^5.3.0",
+    "@rollup/plugin-replace": "^2.3.4",
+    "babel-eslint": "^10.0.3",
+    "babel-jest": "^26.6.3",
+    "babel-plugin-add-import-extension": "^1.4.4",
+    "babel-plugin-annotate-pure-calls": "^0.4.0",
+    "babel-plugin-dev-expression": "^0.2.2",
+    "babel-plugin-inline-replace-variables": "^1.3.1",
+    "babel-plugin-transform-inline-environment-variables": "^0.4.3",
+    "concurrently": "^5.3.0",
+    "dotenv": "^8.2.0",
+    "eslint": "^7.20.0",
+    "eslint-plugin-flowtype": "^5.2.2",
+    "eslint-plugin-import": "^2.22.1",
+    "eslint-plugin-unused-imports": "^1.1.0",
+    "flow-bin": "^0.139.0",
+    "flow-copy-source": "^2.0.9",
+    "get-port-cli": "^2.0.0",
+    "husky": "^5.0.9",
+    "jest": "^26.6.3",
+    "jest-environment-jsdom-sixteen": "^1.0.3",
+    "jest-environment-puppeteer": "^4.4.0",
+    "jest-image-snapshot": "^4.3.0",
+    "jest-puppeteer": "^4.4.0",
+    "pinst": "^2.1.4",
+    "poster": "^0.0.9",
+    "prettier": "^2.2.1",
+    "pretty-quick": "^3.1.0",
+    "puppeteer": "^10.4.0",
+    "replace-in-files-cli": "^1.0.0",
+    "rollup": "^2.39.0",
+    "rollup-plugin-flow-entry": "^0.3.3",
+    "rollup-plugin-license": "^2.2.0",
+    "rollup-plugin-terser": "^7.0.2",
+    "rollup-plugin-visualizer": "^4.2.0",
+    "serve": "^11.3.2",
+    "typescript": "^4.1.5"
+  }
+}