Replace app.js with webpack-dev-server (#5797)

25 files changed, 107 insertions, 499 deletions

diff --git a/.npmignore b/.npmignore
index 4dc1a0018..57b7d8d12 100644
--- a/.npmignore
+++ b/.npmignore
@@ -10,9 +10,6 @@
 # https://github.com/nasa/openmct/issues/4992
 !/example/**/*
 
-# We will remove this in https://github.com/nasa/openmct/issues/4922
-!/app.js
-
 # ...except for these files in the above folders.
 /src/**/*Spec.js
 /src/**/test/
diff --git a/API.md b/API.md
index 5c3c1afd5..0603e898c 100644
--- a/API.md
+++ b/API.md
@@ -57,7 +57,7 @@
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
-# Building Applications With Open MCT
+# Developing Applications With Open MCT
 
 ## Scope and purpose of this document
 
@@ -72,8 +72,7 @@ MCT, as well as addressing some common developer use cases.
 ## Building From Source 
 
 The latest version of Open MCT is available from [our GitHub repository](https://github.com/nasa/openmct). 
-If you have `git`, and `node` installed, you can build Open MCT with the
-commands 
+If you have `git`, and `node` installed, you can build Open MCT with the commands 
 
 ```bash
 git clone https://github.com/nasa/openmct.git
@@ -86,7 +85,7 @@ build a minified version that can be included in your application. The output
 of the build process is placed in a `dist` folder under the openmct source 
 directory, which can be copied out to another location as needed. The contents 
 of this folder will include a minified javascript file named `openmct.js` as 
-well as assets such as html, css, and images necessary for the UI. 
+well as assets such as html, css, and images necessary for the UI.
 
 ## Starting an Open MCT application
 
diff --git a/Procfile b/Procfile
deleted file mode 100644
index 1e13b4ae0..000000000
--- a/Procfile
+++ /dev/null
@@ -1 +0,0 @@
-web: node app.js --port $PORT
diff --git a/README.md b/README.md
index dc685fac1..463961d33 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,8 @@ Building and running Open MCT in your local dev environment is very easy. Be sur
 
 Open MCT is now running, and can be accessed by pointing a web browser at [http://localhost:8080/](http://localhost:8080/)
 
+Open MCT is built using [`npm`](http://npmjs.com/) and [`webpack`](https://webpack.js.org/).
+
 ## Documentation
 
 Documentation is available on the [Open MCT website](https://nasa.github.io/openmct/documentation/).
@@ -43,11 +45,9 @@ our documentation.
 We want Open MCT to be as easy to use, install, run, and develop for as
 possible, and your feedback will help us get there! Feedback can be provided via [GitHub issues](https://github.com/nasa/openmct/issues/new/choose), [Starting a GitHub Discussion](https://github.com/nasa/openmct/discussions), or by emailing us at [arc-dl-openmct@mail.nasa.gov](mailto:arc-dl-openmct@mail.nasa.gov).
 
-## Building Applications With Open MCT
-
-Open MCT is built using [`npm`](http://npmjs.com/) and [`webpack`](https://webpack.js.org/).
+## Developing Applications With Open MCT
 
-See our documentation for a guide on [building Applications with Open MCT](https://github.com/nasa/openmct/blob/master/API.md#starting-an-open-mct-application).
+For more on developing with Open MCT, see our documentation for a guide on [Developing Applications with Open MCT](./API.md#starting-an-open-mct-application).
 
 ## Compatibility
 
@@ -64,7 +64,7 @@ that is intended to be added or removed as a single unit.
 As well as providing an extension mechanism, most of the core Open MCT codebase is also 
 written as plugins.
 
-For information on writing plugins, please see [our API documentation](https://github.com/nasa/openmct/blob/master/API.md#plugins).
+For information on writing plugins, please see [our API documentation](./API.md#plugins).
 
 ## Tests
 
diff --git a/app.js b/app.js
deleted file mode 100644
index c7ecd9de3..000000000
--- a/app.js
+++ /dev/null
@@ -1,92 +0,0 @@
-/*global process*/
-
-/**
- * Usage:
- *
- * npm install minimist express
- * node app.js [options]
- */
-
-const options = require('minimist')(process.argv.slice(2));
-const express = require('express');
-const app = express();
-const fs = require('fs');
-const request = require('request');
-const __DEV__ = !process.env.NODE_ENV || process.env.NODE_ENV === 'development';
-
-// Defaults
-options.port = options.port || options.p || 8080;
-options.host = options.host || 'localhost';
-options.directory = options.directory || options.D || '.';
-
-// Show command line options
-if (options.help || options.h) {
-    console.log("\nUsage: node app.js [options]\n");
-    console.log("Options:");
-    console.log("  --help, -h               Show this message.");
-    console.log("  --port, -p <number>      Specify port.");
-    console.log("  --directory, -D <bundle>   Serve files from specified directory.");
-    console.log("");
-    process.exit(0);
-}
-
-app.disable('x-powered-by');
-
-app.use('/proxyUrl', function proxyRequest(req, res, next) {
-    console.log('Proxying request to: ', req.query.url);
-    req.pipe(request({
-        url: req.query.url,
-        strictSSL: false
-    }).on('error', next)).pipe(res);
-});
-
-class WatchRunPlugin {
-    apply(compiler) {
-        compiler.hooks.emit.tapAsync('WatchRunPlugin', (compilation, callback) => {
-            console.log('Begin compile at ' + new Date());
-            callback();
-        });
-    }
-}
-
-const webpack = require('webpack');
-let webpackConfig;
-if (__DEV__) {
-    webpackConfig = require('./webpack.dev');
-    webpackConfig.plugins.push(new webpack.HotModuleReplacementPlugin());
-    webpackConfig.entry.openmct = [
-        'webpack-hot-middleware/client?reload=true',
-        webpackConfig.entry.openmct
-    ];
-    webpackConfig.plugins.push(new WatchRunPlugin());
-} else {
-    webpackConfig = require('./webpack.coverage');
-}
-
-const compiler = webpack(webpackConfig);
-
-app.use(require('webpack-dev-middleware')(
-    compiler,
-    {
-        publicPath: '/dist',
-        stats: 'errors-warnings'
-    }
-));
-
-if (__DEV__) {
-    app.use(require('webpack-hot-middleware')(
-        compiler,
-        {}
-    ));
-}
-
-// Expose index.html for development users.
-app.get('/', function (req, res) {
-    fs.createReadStream('index.html').pipe(res);
-});
-
-// Finally, open the HTTP server and log the instance to the console
-app.listen(options.port, options.host, function () {
-    console.log('Open MCT application running at %s:%s', options.host, options.port);
-});
-
diff --git a/docs/footer.html b/docs/footer.html
deleted file mode 100644
index a6878b0ca..000000000
--- a/docs/footer.html
+++ /dev/null
@@ -1,3 +0,0 @@
-        <hr>
-    </body>
-</html>
diff --git a/docs/gendocs.js b/docs/gendocs.js
deleted file mode 100644
index a5f3188e9..000000000
--- a/docs/gendocs.js
+++ /dev/null
@@ -1,209 +0,0 @@
-/*****************************************************************************
- * Open MCT, Copyright (c) 2014-2022, United States Government
- * as represented by the Administrator of the National Aeronautics and Space
- * Administration. All rights reserved.
- *
- * Open MCT is licensed under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * http://www.apache.org/licenses/LICENSE-2.0.
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations
- * under the License.
- *
- * Open MCT includes source code licensed under additional open source
- * licenses. See the Open Source Licenses file (LICENSES.md) included with
- * this source code distribution or the Licensing information page available
- * at runtime from the About dialog for additional information.
- *****************************************************************************/
-
-/*global require,process,__dirname,GLOBAL*/
-/*jslint nomen: false */
-
-
-// Usage:
-//   node gendocs.js --in <source directory> --out <dest directory>
-
-var CONSTANTS = {
-        DIAGRAM_WIDTH: 800,
-        DIAGRAM_HEIGHT: 500
-    },
-    TOC_HEAD = "# Table of Contents";
-
-GLOBAL.window = GLOBAL.window ||  GLOBAL; // nomnoml expects window to be defined
-(function () {
-    "use strict";
-
-    var fs = require("fs"),
-        mkdirp = require("mkdirp"),
-        path = require("path"),
-        glob = require("glob"),
-        marked = require("marked"),
-        split = require("split"),
-        stream = require("stream"),
-        nomnoml = require('nomnoml'),
-        toc = require("markdown-toc"),
-        Canvas = require('canvas'),
-        header = fs.readFileSync(path.resolve(__dirname, 'header.html')),
-        footer = fs.readFileSync(path.resolve(__dirname, 'footer.html')),
-        options = require("minimist")(process.argv.slice(2));
-
-    // Convert from nomnoml source to a target PNG file.
-    function renderNomnoml(source, target) {
-        var canvas =
-            new Canvas(CONSTANTS.DIAGRAM_WIDTH, CONSTANTS.DIAGRAM_HEIGHT);
-        nomnoml.draw(canvas, source, 1.0);
-        canvas.pngStream().pipe(fs.createWriteStream(target));
-    }
-
-    // Stream transform.
-    // Pulls out nomnoml diagrams from fenced code blocks and renders them
-    // as PNG files in the output directory, prefixed with a provided name.
-    // The fenced code blocks will be replaced with Markdown in the
-    // output of this stream.
-    function nomnomlifier(outputDirectory, prefix) {
-        var transform = new stream.Transform({ objectMode: true }),
-            isBuilding = false,
-            counter = 1,
-            outputPath,
-            source = "";
-
-        transform._transform = function (chunk, encoding, done) {
-            if (!isBuilding) {
-                if (chunk.trim().indexOf("```nomnoml") === 0) {
-                    var outputFilename = prefix + '-' + counter + '.png';
-                    outputPath = path.join(outputDirectory, outputFilename);
-                    this.push([
-                        "\n![Diagram ",
-                        counter,
-                        "](",
-                        outputFilename,
-                        ")\n\n"
-                    ].join(""));
-                    isBuilding = true;
-                    source = "";
-                    counter += 1;
-                } else {
-                    // Otherwise, pass through
-                    this.push(chunk + '\n');
-                }
-            } else {
-                if (chunk.trim() === "```") {
-                    // End nomnoml
-                    renderNomnoml(source, outputPath);
-                    isBuilding = false;
-                } else {
-                    source += chunk + '\n';
-                }
-            }
-            done();
-        };
-
-        return transform;
-    }
-
-    // Convert from Github-flavored Markdown to HTML
-    function gfmifier(renderTOC) {
-        var transform = new stream.Transform({ objectMode: true }),
-            markdown = "";
-        transform._transform = function (chunk, encoding, done) {
-            markdown += chunk;
-            done();
-        };
-        transform._flush = function (done) {
-            if (renderTOC){
-                // Prepend table of contents
-                markdown =
-                    [ TOC_HEAD, toc(markdown).content, "", markdown ].join("\n");
-            }
-            this.push(header);
-            this.push(marked(markdown));
-            this.push(footer);
-            done();
-        };
-        return transform;
-    }
-
-    // Custom renderer for marked; converts relative links from md to html,
-    // and makes headings linkable.
-    function CustomRenderer() {
-        var renderer = new marked.Renderer(),
-            customRenderer = Object.create(renderer);
-        customRenderer.heading = function (text, level) {
-            var escapedText = (text || "").trim().toLowerCase().replace(/\W/g, "-"),
-                aOpen = "<a name=\"" + escapedText + "\" href=\"#" + escapedText + "\">",
-                aClose = "</a>";
-            return aOpen + renderer.heading.apply(renderer, arguments) + aClose;
-        };
-        // Change links to .md files to .html
-        customRenderer.link = function (href, title, text) {
-            // ...but only if they look like relative paths
-            return (href || "").indexOf(":") === -1 && href[0] !== "/" ?
-                    renderer.link(href.replace(/\.md/, ".html"), title, text) :
-                    renderer.link.apply(renderer, arguments);
-        };
-        return customRenderer;
-    }
-
-    options['in'] = options['in'] || options.i;
-    options.out = options.out || options.o;
-
-    marked.setOptions({
-        renderer: new CustomRenderer(),
-        gfm: true,
-        tables: true,
-        breaks: false,
-        pedantic: false,
-        sanitize: true,
-        smartLists: true,
-        smartypants: false
-    });
-
-    // Convert all markdown files.
-    // First, pull out nomnoml diagrams.
-    // Then, convert remaining Markdown to HTML.
-    glob(options['in'] + "/**/*.md", {}, function (err, files) {
-        files.forEach(function (file) {
-            var destination = file.replace(options['in'], options.out)
-                .replace(/md$/, "html"),
-                destPath = path.dirname(destination),
-                prefix = path.basename(destination).replace(/\.html$/, ""),
-                //Determine whether TOC should be rendered for this file based
-                //on regex provided as command line option
-                renderTOC = file.match(options['suppress-toc'] || "") === null;
-
-            mkdirp(destPath, function (err) {
-                fs.createReadStream(file, { encoding: 'utf8' })
-                    .pipe(split())
-                    .pipe(nomnomlifier(destPath, prefix))
-                    .pipe(gfmifier(renderTOC))
-                    .pipe(fs.createWriteStream(destination, {
-                        encoding: 'utf8'
-                    }));
-            });
-        });
-    });
-
-    // Also copy over all HTML, CSS, or PNG files
-    glob(options['in'] + "/**/*.@(html|css|png)", {}, function (err, files) {
-        files.forEach(function (file) {
-            var destination = file.replace(options['in'], options.out),
-                destPath = path.dirname(destination),
-                streamOptions = {};
-            if (file.match(/png$/)) {
-                streamOptions.encoding = null;
-            } else {
-                streamOptions.encoding = 'utf8';
-            }
-
-            mkdirp(destPath, function (err) {
-                fs.createReadStream(file, streamOptions)
-                    .pipe(fs.createWriteStream(destination, streamOptions));
-            });
-        });
-    });
-
-}());
diff --git a/docs/header.html b/docs/header.html
deleted file mode 100644
index c945996f4..000000000
--- a/docs/header.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<html>
-    <head>
-        <link rel="stylesheet"
-              href="//nasa.github.io/openmct/static/res/css/styles.css">
-        <link rel="stylesheet"
-              href="//nasa.github.io/openmct/static/res/css/documentation.css">
-    </head>
-    <body>
-
diff --git a/e2e/README.md b/e2e/README.md
index 2ce872710..6cfd604a2 100644
--- a/e2e/README.md
+++ b/e2e/README.md
@@ -151,7 +151,7 @@ Current list of test tags:
 
 - `@ipad` - Test case or test suite is compatible with Playwright's iPad support and Open MCT's read-only mobile view (i.e. no Create button).
 - `@gds` - Denotes a GDS Test Case used in the VIPER Mission.
-- `@addInit` - Initializes the browser with an injected and artificial state. Useful for loading non-default plugins. Likely will not work outside of app.js.
+- `@addInit` - Initializes the browser with an injected and artificial state. Useful for loading non-default plugins. Likely will not work outside of `npm start`.
 - `@localStorage` - Captures or generates session storage to manipulate browser state. Useful for excluding in tests which require a persistent backend (i.e. CouchDB).
 - `@snapshot` - Uses Playwright's snapshot functionality to record a copy of the DOM for direct comparison. Must be run inside of the playwright container.
 - `@unstable` - A new test or test which is known to be flaky.
diff --git a/e2e/playwright-ci.config.js b/e2e/playwright-ci.config.js
index aeff66882..cd8fd2e7e 100644
--- a/e2e/playwright-ci.config.js
+++ b/e2e/playwright-ci.config.js
@@ -14,7 +14,7 @@ const config = {
     testIgnore: '**/*.perf.spec.js', //Ignore performance tests and define in playwright-perfromance.config.js
     timeout: 60 * 1000,
     webServer: {
-        command: 'cross-env NODE_ENV=test npm run start',
+        command: 'npm run start:coverage',
         url: 'http://localhost:8080/#',
         timeout: 200 * 1000,
         reuseExistingServer: false
diff --git a/e2e/playwright-local.config.js b/e2e/playwright-local.config.js
index 87365fee2..845cf6812 100644
--- a/e2e/playwright-local.config.js
+++ b/e2e/playwright-local.config.js
@@ -12,10 +12,7 @@ const config = {
     testIgnore: '**/*.perf.spec.js',
     timeout: 30 * 1000,
     webServer: {
-        env: {
-            NODE_ENV: 'test'
-        },
-        command: 'npm run start',
+        command: 'npm run start:coverage',
         url: 'http://localhost:8080/#',
         timeout: 120 * 1000,
         reuseExistingServer: true
diff --git a/e2e/playwright-performance.config.js b/e2e/playwright-performance.config.js
index de79304f1..7f4fae91c 100644
--- a/e2e/playwright-performance.config.js
+++ b/e2e/playwright-performance.config.js
@@ -6,12 +6,12 @@ const CI = process.env.CI === 'true';
 
 /** @type {import('@playwright/test').PlaywrightTestConfig} */
 const config = {
-    retries: 1, //Only for debugging purposes because trace is enabled only on first retry
+    retries: 1, //Only for debugging purposes for trace: 'on-first-retry'
     testDir: 'tests/performance/',
     timeout: 60 * 1000,
     workers: 1, //Only run in serial with 1 worker
     webServer: {
-        command: 'cross-env NODE_ENV=test npm run start',
+        command: 'npm run start', //coverage not generated
         url: 'http://localhost:8080/#',
         timeout: 200 * 1000,
         reuseExistingServer: !CI
diff --git a/e2e/playwright-visual.config.js b/e2e/playwright-visual.config.js
index 1123de808..34bc13d39 100644
--- a/e2e/playwright-visual.config.js
+++ b/e2e/playwright-visual.config.js
@@ -4,13 +4,13 @@
 
 /** @type {import('@playwright/test').PlaywrightTestConfig<{ theme: string }>} */
 const config = {
-    retries: 1, // visual tests should never retry due to snapshot comparison errors. Leaving as a shim
+    retries: 0, // Visual tests should never retry due to snapshot comparison errors. Leaving as a shim
     testDir: 'tests/visual',
     testMatch: '**/*.visual.spec.js', // only run visual tests
     timeout: 60 * 1000,
     workers: 1, //Lower stress on Circle CI Agent for Visual tests https://github.com/percy/cli/discussions/1067
     webServer: {
-        command: 'cross-env NODE_ENV=test npm run start',
+        command: 'npm run start:coverage',
         url: 'http://localhost:8080/#',
         timeout: 200 * 1000,
         reuseExistingServer: !process.env.CI
@@ -31,7 +31,7 @@ const config = {
             }
         },
         {
-            name: 'chrome-snow-theme',
+            name: 'chrome-snow-theme', //Runs the same visual tests but with snow-theme enabled
             use: {
                 browserName: 'chromium',
                 theme: 'snow'
diff --git a/e2e/tests/framework/baseFixtures.e2e.spec.js b/e2e/tests/framework/baseFixtures.e2e.spec.js
index 86ae7c7d3..aa5bf744e 100644
--- a/e2e/tests/framework/baseFixtures.e2e.spec.js
+++ b/e2e/tests/framework/baseFixtures.e2e.spec.js
@@ -23,7 +23,7 @@
 /*
 This test suite is dedicated to testing our use of the playwright framework as it
 relates to how we've extended it (i.e. ./e2e/baseFixtures.js) and assumptions made in our dev environment
-(app.js and ./e2e/webpack-dev-middleware.js)
+(`npm start` and ./e2e/webpack-dev-middleware.js)
 */
 
 const { test } = require('../../baseFixtures.js');
diff --git a/e2e/tests/visual/controlledClock.visual.spec.js b/e2e/tests/visual/controlledClock.visual.spec.js
index c4d6b5767..0f5de10c6 100644
--- a/e2e/tests/visual/controlledClock.visual.spec.js
+++ b/e2e/tests/visual/controlledClock.visual.spec.js
@@ -22,7 +22,7 @@
 
 /*
 Collection of Visual Tests set to run in a default context. The tests within this suite
-are only meant to run against openmct's app.js started by `npm run start` within the
+are only meant to run against openmct started by `npm start` within the
 `./e2e/playwright-visual.config.js` file.
 
 */
diff --git a/e2e/tests/visual/default.visual.spec.js b/e2e/tests/visual/default.visual.spec.js
index b8c10b35f..0a2a88005 100644
--- a/e2e/tests/visual/default.visual.spec.js
+++ b/e2e/tests/visual/default.visual.spec.js
@@ -22,7 +22,7 @@
 
 /*
 Collection of Visual Tests set to run in a default context. The tests within this suite
-are only meant to run against openmct's app.js started by `npm run start` within the
+are only meant to run against openmct started by `npm start` within the
 `./e2e/playwright-visual.config.js` file.
 
 These should only use functional expect statements to verify assumptions about the state
diff --git a/jsdoc.json b/jsdoc.json
deleted file mode 100644
index ac485a5ef..000000000
--- a/jsdoc.json
+++ /dev/null
@@ -1,12 +0,0 @@
-{
-    "source": {
-        "include": [
-            "src/"
-        ],
-        "includePattern": "src/.+\\.js$",
-        "excludePattern": ".+\\Spec\\.js$|lib/.+"
-    },
-    "plugins": [
-        "plugins/markdown"
-    ]
-}
diff --git a/karma.conf.js b/karma.conf.js
index a24f6d0f3..75a9c04fc 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -23,14 +23,32 @@
 /*global module,process*/
 
 module.exports = (config) => {
-    const webpackConfig = require('./webpack.coverage.js');
+    let webpackConfig;
+    let browsers;
+    let singleRun;
+
+    if (process.env.KARMA_DEBUG) {
+        webpackConfig = require('./webpack.dev.js');
+        browsers = ['ChromeDebugging'];
+        singleRun = false;
+    } else {
+        webpackConfig = require('./webpack.coverage.js');
+        browsers = ['ChromeHeadless'];
+        singleRun = true;
+    }
+
     delete webpackConfig.output;
+    // karma doesn't support webpack entry
+    delete webpackConfig.entry;
 
     config.set({
         basePath: '',
-        frameworks: ['jasmine'],
+        frameworks: ['jasmine', 'webpack'],
         files: [
             'indexTest.js',
+            // included means: should the files be included in the browser using <script> tag?
+            // We don't want them as a <script> because the shared worker source
+            // needs loaded remotely by the shared worker process.
             {
                 pattern: 'dist/couchDBChangesFeed.js*',
                 included: false
@@ -46,7 +64,7 @@ module.exports = (config) => {
         ],
         port: 9876,
         reporters: ['spec', 'junit', 'coverage-istanbul'],
-        browsers: [process.env.NODE_ENV === 'debug' ? 'ChromeDebugging' : 'ChromeHeadless'],
+        browsers,
         client: {
             jasmine: {
                 random: false,
@@ -70,6 +88,7 @@ module.exports = (config) => {
         },
         coverageIstanbulReporter: {
             fixWebpackSourcePaths: true,
+            skipFilesWithNoCoverage: true,
             dir: "coverage/unit", //Sets coverage file to be consumed by codecov.io
             reports: ['lcovonly']
         },
@@ -90,7 +109,7 @@ module.exports = (config) => {
             stats: 'errors-warnings'
         },
         concurrency: 1,
-        singleRun: true,
+        singleRun,
         browserNoActivityTimeout: 400000
     });
 };
diff --git a/lighthouserc.yml b/lighthouserc.yml
deleted file mode 100644
index b2a2474a7..000000000
--- a/lighthouserc.yml
+++ /dev/null
@@ -1,96 +0,0 @@
----
-ci:
-  collect:
-    urls:
-    - http://localhost/
-    numberOfRuns: 5
-    settings:
-      onlyCategories:
-      - performance
-      - best-practices
-  upload:
-    target: temporary-public-storage
-  assert:
-    preset: lighthouse:recommended
-    assertions:
-      ### Applicable assertions
-      bootup-time:
-      - warn
-      - minScore: 0.88 #Original value was calculated at 0.88
-      dom-size: 
-      - error
-      - maxNumericValue: 200 #Original value was calculated at 188
-      first-contentful-paint:
-      - error
-      - minScore: 0.07 #Original value was calculated at 0.08
-      mainthread-work-breakdown:
-      - warn
-      - minScore: 0.8 #Original value was calculated at 0.8
-      unused-javascript:
-      - warn
-      - maxLength: 1
-      - error
-      - maxNumericValue: 2000 #Original value was calculated at 1855
-      unused-css-rules: warn
-      installable-manifest: warn
-      service-worker: warn
-      ### Disabled seo, accessibility, and pwa assertions, below
-      categories:seo: 'off'
-      categories:accessibility: 'off'
-      categories:pwa: 'off'
-      accesskeys: 'off'
-      apple-touch-icon: 'off'
-      aria-allowed-attr: 'off'
-      aria-command-name: 'off'
-      aria-hidden-body: 'off'
-      aria-hidden-focus: 'off'
-      aria-input-field-name: 'off'
-      aria-meter-name: 'off'
-      aria-progressbar-name: 'off'
-      aria-required-attr: 'off'
-      aria-required-children: 'off'
-      aria-required-parent: 'off'
-      aria-roles: 'off'
-      aria-toggle-field-name: 'off'
-      aria-tooltip-name: 'off'
-      aria-treeitem-name: 'off'
-      aria-valid-attr: 'off'
-      aria-valid-attr-value: 'off'
-      button-name: 'off'
-      bypass: 'off'
-      canonical: 'off'
-      color-contrast: 'off'
-      content-width: 'off'
-      crawlable-anchors: 'off'
-      csp-xss: 'off'
-      font-display: 'off'
-      font-size: 'off'
-      maskable-icon: 'off'
-      heading-order: 'off'
-      hreflang: 'off'
-      html-has-lang: 'off'
-      html-lang-valid: 'off'
-      http-status-code: 'off'
-      image-alt: 'off'
-      input-image-alt: 'off'
-      is-crawlable: 'off'
-      label: 'off'
-      link-name: 'off'
-      link-text: 'off'
-      list: 'off'
-      listitem: 'off'
-      meta-description: 'off'
-      meta-refresh: 'off'
-      meta-viewport: 'off'
-      object-alt: 'off'
-      plugins: 'off'
-      robots-txt: 'off'
-      splash-screen: 'off'
-      tabindex: 'off'
-      tap-targets: 'off'
-      td-headers-attr: 'off'
-      th-has-data-cells: 'off'
-      themed-omnibox: 'off'
-      valid-lang: 'off'
-      video-caption: 'off'
-      viewport: 'off'
diff --git a/package.json b/package.json
index d6255ac1c..dd18808c6 100644
--- a/package.json
+++ b/package.json
@@ -15,10 +15,9 @@
     "@types/mocha": "^9.1.0",
     "babel-loader": "8.2.5",
     "babel-plugin-istanbul": "6.1.1",
+    "codecov": "3.8.3",
     "comma-separated-values": "3.6.4",
-    "codecov":"3.8.3",
     "copy-webpack-plugin": "11.0.0",
-    "cross-env": "7.0.3",
     "css-loader": "6.7.1",
     "d3-axis": "3.0.0",
     "d3-scale": "3.3.0",
@@ -29,7 +28,6 @@
     "eslint-plugin-vue": "9.3.0",
     "eslint-plugin-you-dont-need-lodash-underscore": "6.12.0",
     "eventemitter3": "1.2.0",
-    "express": "4.13.1",
     "file-saver": "2.0.5",
     "git-rev-sync": "3.0.2",
     "html2canvas": "1.4.1",
@@ -51,12 +49,12 @@
     "moment": "2.29.4",
     "moment-duration-format": "2.3.2",
     "moment-timezone": "0.5.37",
-    "nyc":"15.1.0",
+    "nyc": "15.1.0",
     "painterro": "1.2.78",
+    "playwright-core": "1.26.1",
     "plotly.js-basic-dist": "2.14.0",
     "plotly.js-gl2d-dist": "2.14.0",
     "printj": "1.3.1",
-    "request": "2.88.2",
     "resolve-url-loader": "5.0.0",
     "sass": "1.55.0",
     "sass-loader": "13.0.2",
@@ -69,23 +67,23 @@
     "vue-template-compiler": "2.6.14",
     "webpack": "5.74.0",
     "webpack-cli": "4.10.0",
-    "webpack-dev-middleware": "5.3.3",
-    "webpack-hot-middleware": "2.25.2",
+    "webpack-dev-server": "4.11.1",
     "webpack-merge": "5.8.0"
   },
   "scripts": {
     "clean": "rm -rf ./dist ./node_modules ./package-lock.json",
     "clean-test-lint": "npm run clean; npm install; npm run test; npm run lint",
-    "start": "node app.js",
+    "start": "npx webpack serve --config ./webpack.dev.js",
+    "start:coverage": "npx webpack serve --config ./webpack.coverage.js",
     "lint": "eslint example src e2e --ext .js,.vue openmct.js --max-warnings=0",
     "lint:fix": "eslint example src e2e --ext .js,.vue openmct.js --fix",
-    "build:prod": "cross-env webpack --config webpack.prod.js",
+    "build:prod": "webpack --config webpack.prod.js",
     "build:dev": "webpack --config webpack.dev.js",
     "build:coverage": "webpack --config webpack.coverage.js",
     "build:watch": "webpack --config webpack.dev.js --watch",
     "info": "npx envinfo --system --browsers --npmPackages --binaries --languages --markdown",
-    "test": "cross-env NODE_ENV=test NODE_OPTIONS=\"--max_old_space_size=4096\" karma start --single-run",
-    "test:debug": "cross-env NODE_ENV=debug karma start --no-single-run",
+    "test": "karma start",
+    "test:debug": "KARMA_DEBUG=true karma start",
     "test:e2e": "npx playwright test",
     "test:e2e:couchdb": "npx playwright test --config=e2e/playwright-ci.config.js --project=chrome --grep @couchdb",
     "test:e2e:stable": "npx playwright test --config=e2e/playwright-ci.config.js --project=chrome --grep-invert \"@unstable|@couchdb\"",
@@ -95,13 +93,12 @@
     "test:e2e:visual": "percy exec --config ./e2e/.percy.yml -- npx playwright test --config=e2e/playwright-visual.config.js --grep-invert @unstable",
     "test:e2e:full": "npx playwright test --config=e2e/playwright-ci.config.js --grep-invert @couchdb",
     "test:perf": "npx playwright test --config=e2e/playwright-performance.config.js",
-    "test:watch": "cross-env NODE_ENV=test NODE_OPTIONS=\"--max_old_space_size=4096\" karma start --no-single-run",
     "update-about-dialog-copyright": "perl -pi -e 's/20\\d\\d\\-202\\d/2014\\-2022/gm' ./src/ui/layout/AboutDialog.vue",
     "update-copyright-date": "npm run update-about-dialog-copyright && grep -lr --null --include=*.{js,scss,vue,ts,sh,html,md,frag} 'Copyright (c) 20' . | xargs -r0 perl -pi -e 's/Copyright\\s\\(c\\)\\s20\\d\\d\\-20\\d\\d/Copyright \\(c\\)\\ 2014\\-2022/gm'",
-    "cov:e2e:report":"nyc report --reporter=lcovonly --report-dir=./coverage/e2e",
-    "cov:e2e:full:publish":"codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-full",
-    "cov:e2e:stable:publish":"codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-stable",
-    "cov:unit:publish":"codecov --disable=gcov -f ./coverage/unit/lcov.info -F unit",
+    "cov:e2e:report": "nyc report --reporter=lcovonly --report-dir=./coverage/e2e",
+    "cov:e2e:full:publish": "codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-full",
+    "cov:e2e:stable:publish": "codecov --disable=gcov -f ./coverage/e2e/lcov.info -F e2e-stable",
+    "cov:unit:publish": "codecov --disable=gcov -f ./coverage/unit/lcov.info -F unit",
     "prepare": "npm run build:prod"
   },
   "repository": {
@@ -111,9 +108,6 @@
   "engines": {
     "node": ">=14.19.1"
   },
-  "overrides": {
-    "core-js": "3.21.1"
-  },
   "browserslist": [
     "Firefox ESR",
     "not IE 11",
diff --git a/src/plugins/performanceIndicator/pluginSpec.js b/src/plugins/performanceIndicator/pluginSpec.js
index edeff1add..a6c672512 100644
--- a/src/plugins/performanceIndicator/pluginSpec.js
+++ b/src/plugins/performanceIndicator/pluginSpec.js
@@ -57,8 +57,9 @@ describe('the plugin', () => {
 
     it('calculates an fps value', async () => {
         await loopForABit();
-        // eslint-disable-next-line
-        expect(parseInt(performanceIndicator.text().split(' fps')[0])).toBeGreaterThan(0);
+        // eslint-disable-next-line radix
+        const fps = parseInt(performanceIndicator.text().split(' fps')[0]);
+        expect(fps).toBeGreaterThan(0);
     });
 
     function loopForABit() {
@@ -66,7 +67,7 @@ describe('the plugin', () => {
 
         return new Promise(resolve => {
             requestAnimationFrame(function loop() {
-                if (++frames === 240) {
+                if (++frames > 90) {
                     resolve();
                 } else {
                     requestAnimationFrame(loop);
diff --git a/webpack.common.js b/webpack.common.js
index e48773f56..6f9b478fb 100644
--- a/webpack.common.js
+++ b/webpack.common.js
@@ -1,5 +1,13 @@
-/* global __dirname */
+/* global __dirname module */
 
+/*
+This is the OpenMCT common webpack file. It is imported by the other three webpack configurations:
+ - webpack.prod.js - the production configuration for OpenMCT (default)
+ - webpack.dev.js - the development configuration for OpenMCT
+ - webpack.coverage.js - imports webpack.dev.js and adds code coverage
+There are separate npm scripts to use these configurations, though simply running `npm install`
+will use the default production configuration.
+*/
 const path = require('path');
 const packageDefinition = require('./package.json');
 const CopyWebpackPlugin = require('copy-webpack-plugin');
@@ -140,8 +148,13 @@ const config = {
             }
         ]
     },
-    stats: 'errors-warnings'
+    stats: 'errors-warnings',
+    performance: {
+        // We should eventually consider chunking to decrease
+        // these values
+        maxEntrypointSize: 25000000,
+        maxAssetSize: 25000000
+    }
 };
 
-// eslint-disable-next-line no-undef
 module.exports = config;
diff --git a/webpack.coverage.js b/webpack.coverage.js
index 9980e14ae..3b96de59c 100644
--- a/webpack.coverage.js
+++ b/webpack.coverage.js
@@ -1,34 +1,21 @@
-// This file extends the webpack.dev.js config to add istanbul coverage
-// instrumentation using babel-plugin-istanbul (see babel.coverage.js)
+/* global module */
+
+/*
+This file extends the webpack.dev.js config to add babel istanbul coverage.
+OpenMCT Continuous Integration servers use this configuration to add code coverage
+information to pull requests.
+*/
 
 const config = require('./webpack.dev');
-const vueLoaderRule = config.module.rules.find(r => r.use === 'vue-loader');
 // eslint-disable-next-line no-undef
 const CI = process.env.CI === 'true';
 
 config.devtool = CI ? false : undefined;
 
-vueLoaderRule.use = {
-    loader: 'vue-loader'
-    // Attempt to use Babel with babel-plugin-istanbul
-
-    // TODO The purpose of this was to try to add coverage to JS expressions
-    // inside `<template>` markup, but it seems to add only coverage inside
-    // `<script>` tags.
-    // Issue: https://github.com/nasa/openmct/issues/4973
-    //
-    // options: {
-    //     compiler: require('vue-template-babel-compiler'),
-    //     compilerOptions: {
-    //         babelOptions: require('./babel.coverage')
-    //     }
-    // }
-};
+config.devServer.hot = false;
 
 config.module.rules.push({
     test: /\.js$/,
-    // test: /(\.js$)|(\?vue&type=template)/,
-    // exclude: /node_modules(?!.*\.vue)/,
     exclude: /(Spec\.js$)|(node_modules)/,
     use: {
         loader: 'babel-loader',
diff --git a/webpack.dev.js b/webpack.dev.js
index e7eeeb06c..d2459c9ce 100644
--- a/webpack.dev.js
+++ b/webpack.dev.js
@@ -1,3 +1,10 @@
+/* global __dirname module */
+
+/*
+This configuration should be used for development purposes. It contains full source map, a
+devServer (which be invoked using by `npm start`), and a non-minified Vue.js distribution.
+If OpenMCT is to be used for a production server, use webpack.prod.js instead.
+*/
 const { merge } = require('webpack-merge');
 const common = require('./webpack.common');
 
@@ -27,5 +34,15 @@ module.exports = merge(common, {
             __OPENMCT_ROOT_RELATIVE__: '"dist/"'
         })
     ],
-    devtool: 'eval-source-map'
+    devtool: 'eval-source-map',
+    devServer: {
+        static: {
+            directory: path.join(__dirname, '/dist/'),
+            publicPath: '/dist'
+        },
+        client: {
+            progress: true,
+            overlay: true
+        }
+    }
 });
diff --git a/webpack.prod.js b/webpack.prod.js
index 362b4eb50..7ecd5284e 100644
--- a/webpack.prod.js
+++ b/webpack.prod.js
@@ -1,3 +1,9 @@
+/* global __dirname module */
+
+/*
+This configuration should be used for production installs.
+It is the default webpack configuration.
+*/
 const { merge } = require('webpack-merge');
 const common = require('./webpack.common');