tar@6.0.1

129 files changed, 16323 insertions, 515 deletions

diff --git a/node_modules/fs-minipass/index.js b/node_modules/fs-minipass/index.js
index cd585a83c..9b0779c80 100644
--- a/node_modules/fs-minipass/index.js
+++ b/node_modules/fs-minipass/index.js
@@ -3,11 +3,21 @@ const MiniPass = require('minipass')
 const EE = require('events').EventEmitter
 const fs = require('fs')
 
-// for writev
-const binding = process.binding('fs')
-const writeBuffers = binding.writeBuffers
+let writev = fs.writev
 /* istanbul ignore next */
-const FSReqWrap = binding.FSReqWrap || binding.FSReqCallback
+if (!writev) {
+  // This entire block can be removed if support for earlier than Node.js
+  // 12.9.0 is not needed.
+  const binding = process.binding('fs')
+  const FSReqWrap = binding.FSReqWrap || binding.FSReqCallback
+
+  writev = (fd, iovec, pos, cb) => {
+    const done = (er, bw) => cb(er, bw, iovec)
+    const req = new FSReqWrap()
+    req.oncomplete = done
+    binding.writeBuffers(fd, iovec, pos, req)
+  }
+}
 
 const _autoClose = Symbol('_autoClose')
 const _close = Symbol('_close')
@@ -36,17 +46,20 @@ const _size = Symbol('_size')
 const _write = Symbol('_write')
 const _writing = Symbol('_writing')
 const _defaultFlag = Symbol('_defaultFlag')
+const _errored = Symbol('_errored')
 
 class ReadStream extends MiniPass {
   constructor (path, opt) {
     opt = opt || {}
     super(opt)
 
+    this.readable = true
     this.writable = false
 
     if (typeof path !== 'string')
       throw new TypeError('path must be a string')
 
+    this[_errored] = false
     this[_fd] = typeof opt.fd === 'number' ? opt.fd : null
     this[_path] = path
     this[_readSize] = opt.readSize || 16*1024*1024
@@ -96,7 +109,8 @@ class ReadStream extends MiniPass {
       this[_reading] = true
       const buf = this[_makeBuf]()
       /* istanbul ignore if */
-      if (buf.length === 0) return process.nextTick(() => this[_onread](null, 0, buf))
+      if (buf.length === 0)
+        return process.nextTick(() => this[_onread](null, 0, buf))
       fs.read(this[_fd], buf, 0, buf.length, null, (er, br, buf) =>
         this[_onread](er, br, buf))
     }
@@ -112,8 +126,9 @@ class ReadStream extends MiniPass {
 
   [_close] () {
     if (this[_autoClose] && typeof this[_fd] === 'number') {
-      fs.close(this[_fd], _ => this.emit('close'))
+      const fd = this[_fd]
       this[_fd] = null
+      fs.close(fd, er => er ? this.emit('error', er) : this.emit('close'))
     }
   }
 
@@ -150,6 +165,12 @@ class ReadStream extends MiniPass {
           this[_read]()
         break
 
+      case 'error':
+        if (this[_errored])
+          return
+        this[_errored] = true
+        return super.emit(ev, data)
+
       default:
         return super.emit(ev, data)
     }
@@ -176,7 +197,8 @@ class ReadStreamSync extends ReadStream {
         do {
           const buf = this[_makeBuf]()
           /* istanbul ignore next */
-          const br = buf.length === 0 ? 0 : fs.readSync(this[_fd], buf, 0, buf.length, null)
+          const br = buf.length === 0 ? 0
+            : fs.readSync(this[_fd], buf, 0, buf.length, null)
           if (!this[_handleChunk](br, buf))
             break
         } while (true)
@@ -191,10 +213,9 @@ class ReadStreamSync extends ReadStream {
 
   [_close] () {
     if (this[_autoClose] && typeof this[_fd] === 'number') {
-      try {
-        fs.closeSync(this[_fd])
-      } catch (er) {}
+      const fd = this[_fd]
       this[_fd] = null
+      fs.closeSync(fd)
       this.emit('close')
     }
   }
@@ -205,6 +226,8 @@ class WriteStream extends EE {
     opt = opt || {}
     super(opt)
     this.readable = false
+    this.writable = true
+    this[_errored] = false
     this[_writing] = false
     this[_ended] = false
     this[_needDrain] = false
@@ -225,6 +248,16 @@ class WriteStream extends EE {
       this[_open]()
   }
 
+  emit (ev, data) {
+    if (ev === 'error') {
+      if (this[_errored])
+        return
+      this[_errored] = true
+    }
+    return super.emit(ev, data)
+  }
+
+
   get fd () { return this[_fd] }
   get path () { return this[_path] }
 
@@ -264,11 +297,12 @@ class WriteStream extends EE {
     if (!this[_writing] && !this[_queue].length &&
         typeof this[_fd] === 'number')
       this[_onwrite](null, 0)
+    return this
   }
 
   write (buf, enc) {
     if (typeof buf === 'string')
-      buf = new Buffer(buf, enc)
+      buf = Buffer.from(buf, enc)
 
     if (this[_ended]) {
       this.emit('error', new Error('write() after end()'))
@@ -330,8 +364,9 @@ class WriteStream extends EE {
 
   [_close] () {
     if (this[_autoClose] && typeof this[_fd] === 'number') {
-      fs.close(this[_fd], _ => this.emit('close'))
+      const fd = this[_fd]
       this[_fd] = null
+      fs.close(fd, er => er ? this.emit('error', er) : this.emit('close'))
     }
   }
 }
@@ -339,47 +374,47 @@ class WriteStream extends EE {
 class WriteStreamSync extends WriteStream {
   [_open] () {
     let fd
-    try {
+    // only wrap in a try{} block if we know we'll retry, to avoid
+    // the rethrow obscuring the error's source frame in most cases.
+    if (this[_defaultFlag] && this[_flags] === 'r+') {
+      try {
+        fd = fs.openSync(this[_path], this[_flags], this[_mode])
+      } catch (er) {
+        if (er.code === 'ENOENT') {
+          this[_flags] = 'w'
+          return this[_open]()
+        } else
+          throw er
+      }
+    } else
       fd = fs.openSync(this[_path], this[_flags], this[_mode])
-    } catch (er) {
-      if (this[_defaultFlag] &&
-          this[_flags] === 'r+' &&
-          er && er.code === 'ENOENT') {
-        this[_flags] = 'w'
-        return this[_open]()
-      } else
-        throw er
-    }
+
     this[_onopen](null, fd)
   }
 
   [_close] () {
     if (this[_autoClose] && typeof this[_fd] === 'number') {
-      try {
-        fs.closeSync(this[_fd])
-      } catch (er) {}
+      const fd = this[_fd]
       this[_fd] = null
+      fs.closeSync(fd)
       this.emit('close')
     }
   }
 
   [_write] (buf) {
+    // throw the original, but try to close if it fails
+    let threw = true
     try {
       this[_onwrite](null,
         fs.writeSync(this[_fd], buf, 0, buf.length, this[_pos]))
-    } catch (er) {
-      this[_onwrite](er, 0)
+      threw = false
+    } finally {
+      if (threw)
+        try { this[_close]() } catch (_) {}
     }
   }
 }
 
-const writev = (fd, iovec, pos, cb) => {
-  const done = (er, bw) => cb(er, bw, iovec)
-  const req = new FSReqWrap()
-  req.oncomplete = done
-  binding.writeBuffers(fd, iovec, pos, req)
-}
-
 exports.ReadStream = ReadStream
 exports.ReadStreamSync = ReadStreamSync
 
diff --git a/node_modules/fs-minipass/node_modules/minipass/README.md b/node_modules/fs-minipass/node_modules/minipass/README.md
index c989beea0..32ace2fb9 100644
--- a/node_modules/fs-minipass/node_modules/minipass/README.md
+++ b/node_modules/fs-minipass/node_modules/minipass/README.md
@@ -7,32 +7,32 @@ stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough)
 fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0)
 for objects, strings, and buffers.
 
-Supports pipe()ing (including multi-pipe() and backpressure
-transmission), buffering data until either a `data` event handler or
-`pipe()` is added (so you don't lose the first chunk), and most other
-cases where PassThrough is a good idea.
+Supports pipe()ing (including multi-pipe() and backpressure transmission),
+buffering data until either a `data` event handler or `pipe()` is added (so
+you don't lose the first chunk), and most other cases where PassThrough is
+a good idea.
 
-There is a `read()` method, but it's much more efficient to consume
-data from this stream via `'data'` events or by calling `pipe()` into
-some other stream.  Calling `read()` requires the buffer to be
-flattened in some cases, which requires copying memory.
+There is a `read()` method, but it's much more efficient to consume data
+from this stream via `'data'` events or by calling `pipe()` into some other
+stream.  Calling `read()` requires the buffer to be flattened in some
+cases, which requires copying memory.
 
-There is also no `unpipe()` method.  Once you start piping, there is
-no stopping it!
+There is also no `unpipe()` method.  Once you start piping, there is no
+stopping it!
 
-If you set `objectMode: true` in the options, then whatever is written
-will be emitted.  Otherwise, it'll do a minimal amount of Buffer
-copying to ensure proper Streams semantics when `read(n)` is called.
+If you set `objectMode: true` in the options, then whatever is written will
+be emitted.  Otherwise, it'll do a minimal amount of Buffer copying to
+ensure proper Streams semantics when `read(n)` is called.
 
 `objectMode` can also be set by doing `stream.objectMode = true`, or by
 writing any non-string/non-buffer data.  `objectMode` cannot be set to
 false once it is set.
 
-This is not a `through` or `through2` stream.  It doesn't transform
-the data, it just passes it right through.  If you want to transform
-the data, extend the class, and override the `write()` method.  Once
-you're done transforming the data however you want, call
-`super.write()` with the transform output.
+This is not a `through` or `through2` stream.  It doesn't transform the
+data, it just passes it right through.  If you want to transform the data,
+extend the class, and override the `write()` method.  Once you're done
+transforming the data however you want, call `super.write()` with the
+transform output.
 
 For some examples of streams that extend Minipass in various ways, check
 out:
@@ -46,6 +46,7 @@ out:
 - [tap](http://npm.im/tap)
 - [tap-parser](http://npm.im/tap)
 - [treport](http://npm.im/tap)
+- [minipass-fetch](http://npm.im/minipass-fetch)
 
 ## Differences from Node.js Streams
 
@@ -252,7 +253,8 @@ src.pipe(tee)
 
 ## USAGE
 
-It's a stream!  Use it like a stream and it'll most likely do what you want.
+It's a stream!  Use it like a stream and it'll most likely do what you
+want.
 
 ```js
 const Minipass = require('minipass')
@@ -280,31 +282,30 @@ streams.
 
 * `write(chunk, [encoding], [callback])` - Put data in.  (Note that, in the
   base Minipass class, the same data will come out.)  Returns `false` if
-  the stream will buffer the next write, or true if it's still in
-  "flowing" mode.
+  the stream will buffer the next write, or true if it's still in "flowing"
+  mode.
 * `end([chunk, [encoding]], [callback])` - Signal that you have no more
   data to write.  This will queue an `end` event to be fired when all the
   data has been consumed.
-* `setEncoding(encoding)` - Set the encoding for data coming of the
-  stream.  This can only be done once.
+* `setEncoding(encoding)` - Set the encoding for data coming of the stream.
+  This can only be done once.
 * `pause()` - No more data for a while, please.  This also prevents `end`
   from being emitted for empty streams until the stream is resumed.
-* `resume()` - Resume the stream.  If there's data in the buffer, it is
-  all discarded.  Any buffered events are immediately emitted.
+* `resume()` - Resume the stream.  If there's data in the buffer, it is all
+  discarded.  Any buffered events are immediately emitted.
 * `pipe(dest)` - Send all output to the stream provided.  There is no way
   to unpipe.  When data is emitted, it is immediately written to any and
   all pipe destinations.
-* `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters.
-  Some events are given special treatment, however.  (See below under
-  "events".)
+* `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters.  Some
+  events are given special treatment, however.  (See below under "events".)
 * `promise()` - Returns a Promise that resolves when the stream emits
   `end`, or rejects if the stream emits `error`.
 * `collect()` - Return a Promise that resolves on `end` with an array
-  containing each chunk of data that was emitted, or rejects if the
-  stream emits `error`.  Note that this consumes the stream data.
-* `concat()` - Same as `collect()`, but concatenates the data into a
-  single Buffer object.  Will reject the returned promise if the stream is
-  in objectMode, or if it goes into objectMode by the end of the data.
+  containing each chunk of data that was emitted, or rejects if the stream
+  emits `error`.  Note that this consumes the stream data.
+* `concat()` - Same as `collect()`, but concatenates the data into a single
+  Buffer object.  Will reject the returned promise if the stream is in
+  objectMode, or if it goes into objectMode by the end of the data.
 * `read(n)` - Consume `n` bytes of data out of the buffer.  If `n` is not
   provided, then consume all of it.  If `n` bytes are not available, then
   it returns null.  **Note** consuming streams in this way is less
@@ -421,8 +422,8 @@ mp.concat().then(onebigchunk => {
 
 ### iteration
 
-You can iterate over streams synchronously or asynchronously in
-platforms that support it.
+You can iterate over streams synchronously or asynchronously in platforms
+that support it.
 
 Synchronous iteration will end when the currently available data is
 consumed, even if the `end` event has not been reached.  In string and
@@ -430,9 +431,8 @@ buffer mode, the data is concatenated, so unless multiple writes are
 occurring in the same tick as the `read()`, sync iteration loops will
 generally only have a single iteration.
 
-To consume chunks in this way exactly as they have been written, with
-no flattening, create the stream with the `{ objectMode: true }`
-option.
+To consume chunks in this way exactly as they have been written, with no
+flattening, create the stream with the `{ objectMode: true }` option.
 
 ```js
 const mp = new Minipass({ objectMode: true })
diff --git a/node_modules/fs-minipass/node_modules/minipass/index.js b/node_modules/fs-minipass/node_modules/minipass/index.js
index c072352d4..55ea0f3dd 100644
--- a/node_modules/fs-minipass/node_modules/minipass/index.js
+++ b/node_modules/fs-minipass/node_modules/minipass/index.js
@@ -1,5 +1,6 @@
 'use strict'
 const EE = require('events')
+const Stream = require('stream')
 const Yallist = require('yallist')
 const SD = require('string_decoder').StringDecoder
 
@@ -29,12 +30,6 @@ const ASYNCITERATOR = doIter && Symbol.asyncIterator
 const ITERATOR = doIter && Symbol.iterator
   || Symbol('iterator not implemented')
 
-// Buffer in node 4.x < 4.5.0 doesn't have working Buffer.from
-// or Buffer.alloc, and Buffer in node 10 deprecated the ctor.
-// .M, this is fine .\^/M..
-const B = Buffer.alloc ? Buffer
-  : /* istanbul ignore next */ require('safe-buffer').Buffer
-
 // events that mean 'the stream is over'
 // these are treated specially, and re-emitted
 // if they are listened for after emitting.
@@ -49,9 +44,9 @@ const isArrayBuffer = b => b instanceof ArrayBuffer ||
   b.constructor.name === 'ArrayBuffer' &&
   b.byteLength >= 0
 
-const isArrayBufferView = b => !B.isBuffer(b) && ArrayBuffer.isView(b)
+const isArrayBufferView = b => !Buffer.isBuffer(b) && ArrayBuffer.isView(b)
 
-module.exports = class Minipass extends EE {
+module.exports = class Minipass extends Stream {
   constructor (options) {
     super()
     this[FLOWING] = false
@@ -126,11 +121,11 @@ module.exports = class Minipass extends EE {
     // at some point in the future, we may want to do the opposite!
     // leave strings and buffers as-is
     // anything else switches us into object mode
-    if (!this[OBJECTMODE] && !B.isBuffer(chunk)) {
+    if (!this[OBJECTMODE] && !Buffer.isBuffer(chunk)) {
       if (isArrayBufferView(chunk))
-        chunk = B.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)
+        chunk = Buffer.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)
       else if (isArrayBuffer(chunk))
-        chunk = B.from(chunk)
+        chunk = Buffer.from(chunk)
       else if (typeof chunk !== 'string')
         // use the setter so we throw if we have encoding set
         this.objectMode = true
@@ -152,10 +147,10 @@ module.exports = class Minipass extends EE {
     if (typeof chunk === 'string' && !this[OBJECTMODE] &&
         // unless it is a string already ready for us to use
         !(encoding === this[ENCODING] && !this[DECODER].lastNeed)) {
-      chunk = B.from(chunk, encoding)
+      chunk = Buffer.from(chunk, encoding)
     }
 
-    if (B.isBuffer(chunk) && this[ENCODING])
+    if (Buffer.isBuffer(chunk) && this[ENCODING])
       chunk = this[DECODER].write(chunk)
 
     try {
@@ -188,7 +183,7 @@ module.exports = class Minipass extends EE {
           ])
         else
           this.buffer = new Yallist([
-            B.concat(Array.from(this.buffer), this[BUFFERLENGTH])
+            Buffer.concat(Array.from(this.buffer), this[BUFFERLENGTH])
           ])
       }
 
@@ -423,12 +418,17 @@ module.exports = class Minipass extends EE {
   // const all = await stream.collect()
   collect () {
     const buf = []
-    buf.dataLength = 0
+    if (!this[OBJECTMODE])
+      buf.dataLength = 0
+    // set the promise first, in case an error is raised
+    // by triggering the flow here.
+    const p = this.promise()
     this.on('data', c => {
       buf.push(c)
-      buf.dataLength += c.length
+      if (!this[OBJECTMODE])
+        buf.dataLength += c.length
     })
-    return this.promise().then(() => buf)
+    return p.then(() => buf)
   }
 
   // const data = await stream.concat()
@@ -438,7 +438,7 @@ module.exports = class Minipass extends EE {
       : this.collect().then(buf =>
           this[OBJECTMODE]
             ? Promise.reject(new Error('cannot concat in objectMode'))
-            : this[ENCODING] ? buf.join('') : B.concat(buf, buf.dataLength))
+            : this[ENCODING] ? buf.join('') : Buffer.concat(buf, buf.dataLength))
   }
 
   // stream.promise().then(() => done, er => emitted error)
@@ -529,9 +529,10 @@ module.exports = class Minipass extends EE {
   }
 
   static isStream (s) {
-    return !!s && (s instanceof Minipass || s instanceof EE && (
-      typeof s.pipe === 'function' || // readable
-      (typeof s.write === 'function' && typeof s.end === 'function') // writable
-    ))
+    return !!s && (s instanceof Minipass || s instanceof Stream ||
+      s instanceof EE && (
+        typeof s.pipe === 'function' || // readable
+        (typeof s.write === 'function' && typeof s.end === 'function') // writable
+      ))
   }
 }
diff --git a/node_modules/fs-minipass/node_modules/minipass/package.json b/node_modules/fs-minipass/node_modules/minipass/package.json
index 416e231c9..e125bc7dc 100644
--- a/node_modules/fs-minipass/node_modules/minipass/package.json
+++ b/node_modules/fs-minipass/node_modules/minipass/package.json
@@ -1,27 +1,27 @@
 {
-  "_from": "minipass@^2.6.0",
-  "_id": "minipass@2.9.0",
+  "_from": "minipass@^3.0.0",
+  "_id": "minipass@3.1.1",
   "_inBundle": false,
-  "_integrity": "sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==",
+  "_integrity": "sha512-UFqVihv6PQgwj8/yTGvl9kPz7xIAY+R5z6XYjRInD3Gk3qx6QGSD6zEcpeG4Dy/lQnv1J6zv8ejV90hyYIKf3w==",
   "_location": "/fs-minipass/minipass",
   "_phantomChildren": {},
   "_requested": {
     "type": "range",
     "registry": true,
-    "raw": "minipass@^2.6.0",
+    "raw": "minipass@^3.0.0",
     "name": "minipass",
     "escapedName": "minipass",
-    "rawSpec": "^2.6.0",
+    "rawSpec": "^3.0.0",
     "saveSpec": null,
-    "fetchSpec": "^2.6.0"
+    "fetchSpec": "^3.0.0"
   },
   "_requiredBy": [
     "/fs-minipass"
   ],
-  "_resolved": "https://registry.npmjs.org/minipass/-/minipass-2.9.0.tgz",
-  "_shasum": "e713762e7d3e32fed803115cf93e04bca9fcc9a6",
-  "_spec": "minipass@^2.6.0",
-  "_where": "/Users/mperrotte/npminc/cli/node_modules/fs-minipass",
+  "_resolved": "https://registry.npmjs.org/minipass/-/minipass-3.1.1.tgz",
+  "_shasum": "7607ce778472a185ad6d89082aa2070f79cedcd5",
+  "_spec": "minipass@^3.0.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/fs-minipass",
   "author": {
     "name": "Isaac Z. Schlueter",
     "email": "i@izs.me",
@@ -32,8 +32,7 @@
   },
   "bundleDependencies": false,
   "dependencies": {
-    "safe-buffer": "^5.1.2",
-    "yallist": "^3.0.0"
+    "yallist": "^4.0.0"
   },
   "deprecated": false,
   "description": "minimal implementation of a PassThrough stream",
@@ -42,6 +41,9 @@
     "tap": "^14.6.5",
     "through2": "^2.0.3"
   },
+  "engines": {
+    "node": ">=8"
+  },
   "files": [
     "index.js"
   ],
@@ -59,12 +61,12 @@
   },
   "scripts": {
     "postpublish": "git push origin --follow-tags",
-    "postversion": "npm publish",
+    "postversion": "npm publish --tag=next",
     "preversion": "npm test",
     "test": "tap"
   },
   "tap": {
     "check-coverage": true
   },
-  "version": "2.9.0"
+  "version": "3.1.1"
 }
diff --git a/node_modules/fs-minipass/node_modules/yallist/LICENSE b/node_modules/fs-minipass/node_modules/yallist/LICENSE
new file mode 100644
index 000000000..19129e315
--- /dev/null
+++ b/node_modules/fs-minipass/node_modules/yallist/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/fs-minipass/node_modules/yallist/README.md b/node_modules/fs-minipass/node_modules/yallist/README.md
new file mode 100644
index 000000000..f58610186
--- /dev/null
+++ b/node_modules/fs-minipass/node_modules/yallist/README.md
@@ -0,0 +1,204 @@
+# yallist
+
+Yet Another Linked List
+
+There are many doubly-linked list implementations like it, but this
+one is mine.
+
+For when an array would be too big, and a Map can't be iterated in
+reverse order.
+
+
+[![Build Status](https://travis-ci.org/isaacs/yallist.svg?branch=master)](https://travis-ci.org/isaacs/yallist) [![Coverage Status](https://coveralls.io/repos/isaacs/yallist/badge.svg?service=github)](https://coveralls.io/github/isaacs/yallist)
+
+## basic usage
+
+```javascript
+var yallist = require('yallist')
+var myList = yallist.create([1, 2, 3])
+myList.push('foo')
+myList.unshift('bar')
+// of course pop() and shift() are there, too
+console.log(myList.toArray()) // ['bar', 1, 2, 3, 'foo']
+myList.forEach(function (k) {
+  // walk the list head to tail
+})
+myList.forEachReverse(function (k, index, list) {
+  // walk the list tail to head
+})
+var myDoubledList = myList.map(function (k) {
+  return k + k
+})
+// now myDoubledList contains ['barbar', 2, 4, 6, 'foofoo']
+// mapReverse is also a thing
+var myDoubledListReverse = myList.mapReverse(function (k) {
+  return k + k
+}) // ['foofoo', 6, 4, 2, 'barbar']
+
+var reduced = myList.reduce(function (set, entry) {
+  set += entry
+  return set
+}, 'start')
+console.log(reduced) // 'startfoo123bar'
+```
+
+## api
+
+The whole API is considered "public".
+
+Functions with the same name as an Array method work more or less the
+same way.
+
+There's reverse versions of most things because that's the point.
+
+### Yallist
+
+Default export, the class that holds and manages a list.
+
+Call it with either a forEach-able (like an array) or a set of
+arguments, to initialize the list.
+
+The Array-ish methods all act like you'd expect.  No magic length,
+though, so if you change that it won't automatically prune or add
+empty spots.
+
+### Yallist.create(..)
+
+Alias for Yallist function.  Some people like factories.
+
+#### yallist.head
+
+The first node in the list
+
+#### yallist.tail
+
+The last node in the list
+
+#### yallist.length
+
+The number of nodes in the list.  (Change this at your peril.  It is
+not magic like Array length.)
+
+#### yallist.toArray()
+
+Convert the list to an array.
+
+#### yallist.forEach(fn, [thisp])
+
+Call a function on each item in the list.
+
+#### yallist.forEachReverse(fn, [thisp])
+
+Call a function on each item in the list, in reverse order.
+
+#### yallist.get(n)
+
+Get the data at position `n` in the list.  If you use this a lot,
+probably better off just using an Array.
+
+#### yallist.getReverse(n)
+
+Get the data at position `n`, counting from the tail.
+
+#### yallist.map(fn, thisp)
+
+Create a new Yallist with the result of calling the function on each
+item.
+
+#### yallist.mapReverse(fn, thisp)
+
+Same as `map`, but in reverse.
+
+#### yallist.pop()
+
+Get the data from the list tail, and remove the tail from the list.
+
+#### yallist.push(item, ...)
+
+Insert one or more items to the tail of the list.
+
+#### yallist.reduce(fn, initialValue)
+
+Like Array.reduce.
+
+#### yallist.reduceReverse
+
+Like Array.reduce, but in reverse.
+
+#### yallist.reverse
+
+Reverse the list in place.
+
+#### yallist.shift()
+
+Get the data from the list head, and remove the head from the list.
+
+#### yallist.slice([from], [to])
+
+Just like Array.slice, but returns a new Yallist.
+
+#### yallist.sliceReverse([from], [to])
+
+Just like yallist.slice, but the result is returned in reverse.
+
+#### yallist.toArray()
+
+Create an array representation of the list.
+
+#### yallist.toArrayReverse()
+
+Create a reversed array representation of the list.
+
+#### yallist.unshift(item, ...)
+
+Insert one or more items to the head of the list.
+
+#### yallist.unshiftNode(node)
+
+Move a Node object to the front of the list.  (That is, pull it out of
+wherever it lives, and make it the new head.)
+
+If the node belongs to a different list, then that list will remove it
+first.
+
+#### yallist.pushNode(node)
+
+Move a Node object to the end of the list.  (That is, pull it out of
+wherever it lives, and make it the new tail.)
+
+If the node belongs to a list already, then that list will remove it
+first.
+
+#### yallist.removeNode(node)
+
+Remove a node from the list, preserving referential integrity of head
+and tail and other nodes.
+
+Will throw an error if you try to have a list remove a node that
+doesn't belong to it.
+
+### Yallist.Node
+
+The class that holds the data and is actually the list.
+
+Call with `var n = new Node(value, previousNode, nextNode)`
+
+Note that if you do direct operations on Nodes themselves, it's very
+easy to get into weird states where the list is broken.  Be careful :)
+
+#### node.next
+
+The next node in the list.
+
+#### node.prev
+
+The previous node in the list.
+
+#### node.value
+
+The data the node contains.
+
+#### node.list
+
+The list to which this node belongs.  (Null if it does not belong to
+any list.)
diff --git a/node_modules/fs-minipass/node_modules/yallist/iterator.js b/node_modules/fs-minipass/node_modules/yallist/iterator.js
new file mode 100644
index 000000000..d41c97a19
--- /dev/null
+++ b/node_modules/fs-minipass/node_modules/yallist/iterator.js
@@ -0,0 +1,8 @@
+'use strict'
+module.exports = function (Yallist) {
+  Yallist.prototype[Symbol.iterator] = function* () {
+    for (let walker = this.head; walker; walker = walker.next) {
+      yield walker.value
+    }
+  }
+}
diff --git a/node_modules/fs-minipass/node_modules/yallist/package.json b/node_modules/fs-minipass/node_modules/yallist/package.json
new file mode 100644
index 000000000..cdfd89afb
--- /dev/null
+++ b/node_modules/fs-minipass/node_modules/yallist/package.json
@@ -0,0 +1,62 @@
+{
+  "_from": "yallist@^4.0.0",
+  "_id": "yallist@4.0.0",
+  "_inBundle": false,
+  "_integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+  "_location": "/fs-minipass/yallist",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "yallist@^4.0.0",
+    "name": "yallist",
+    "escapedName": "yallist",
+    "rawSpec": "^4.0.0",
+    "saveSpec": null,
+    "fetchSpec": "^4.0.0"
+  },
+  "_requiredBy": [
+    "/fs-minipass/minipass"
+  ],
+  "_resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+  "_shasum": "9bb92790d9c0effec63be73519e11a35019a3a72",
+  "_spec": "yallist@^4.0.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/fs-minipass/node_modules/minipass",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/yallist/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Yet Another Linked List",
+  "devDependencies": {
+    "tap": "^12.1.0"
+  },
+  "directories": {
+    "test": "test"
+  },
+  "files": [
+    "yallist.js",
+    "iterator.js"
+  ],
+  "homepage": "https://github.com/isaacs/yallist#readme",
+  "license": "ISC",
+  "main": "yallist.js",
+  "name": "yallist",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/yallist.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --all; git push origin --tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap test/*.js --100"
+  },
+  "version": "4.0.0"
+}
diff --git a/node_modules/fs-minipass/node_modules/yallist/yallist.js b/node_modules/fs-minipass/node_modules/yallist/yallist.js
new file mode 100644
index 000000000..4e83ab1c5
--- /dev/null
+++ b/node_modules/fs-minipass/node_modules/yallist/yallist.js
@@ -0,0 +1,426 @@
+'use strict'
+module.exports = Yallist
+
+Yallist.Node = Node
+Yallist.create = Yallist
+
+function Yallist (list) {
+  var self = this
+  if (!(self instanceof Yallist)) {
+    self = new Yallist()
+  }
+
+  self.tail = null
+  self.head = null
+  self.length = 0
+
+  if (list && typeof list.forEach === 'function') {
+    list.forEach(function (item) {
+      self.push(item)
+    })
+  } else if (arguments.length > 0) {
+    for (var i = 0, l = arguments.length; i < l; i++) {
+      self.push(arguments[i])
+    }
+  }
+
+  return self
+}
+
+Yallist.prototype.removeNode = function (node) {
+  if (node.list !== this) {
+    throw new Error('removing node which does not belong to this list')
+  }
+
+  var next = node.next
+  var prev = node.prev
+
+  if (next) {
+    next.prev = prev
+  }
+
+  if (prev) {
+    prev.next = next
+  }
+
+  if (node === this.head) {
+    this.head = next
+  }
+  if (node === this.tail) {
+    this.tail = prev
+  }
+
+  node.list.length--
+  node.next = null
+  node.prev = null
+  node.list = null
+
+  return next
+}
+
+Yallist.prototype.unshiftNode = function (node) {
+  if (node === this.head) {
+    return
+  }
+
+  if (node.list) {
+    node.list.removeNode(node)
+  }
+
+  var head = this.head
+  node.list = this
+  node.next = head
+  if (head) {
+    head.prev = node
+  }
+
+  this.head = node
+  if (!this.tail) {
+    this.tail = node
+  }
+  this.length++
+}
+
+Yallist.prototype.pushNode = function (node) {
+  if (node === this.tail) {
+    return
+  }
+
+  if (node.list) {
+    node.list.removeNode(node)
+  }
+
+  var tail = this.tail
+  node.list = this
+  node.prev = tail
+  if (tail) {
+    tail.next = node
+  }
+
+  this.tail = node
+  if (!this.head) {
+    this.head = node
+  }
+  this.length++
+}
+
+Yallist.prototype.push = function () {
+  for (var i = 0, l = arguments.length; i < l; i++) {
+    push(this, arguments[i])
+  }
+  return this.length
+}
+
+Yallist.prototype.unshift = function () {
+  for (var i = 0, l = arguments.length; i < l; i++) {
+    unshift(this, arguments[i])
+  }
+  return this.length
+}
+
+Yallist.prototype.pop = function () {
+  if (!this.tail) {
+    return undefined
+  }
+
+  var res = this.tail.value
+  this.tail = this.tail.prev
+  if (this.tail) {
+    this.tail.next = null
+  } else {
+    this.head = null
+  }
+  this.length--
+  return res
+}
+
+Yallist.prototype.shift = function () {
+  if (!this.head) {
+    return undefined
+  }
+
+  var res = this.head.value
+  this.head = this.head.next
+  if (this.head) {
+    this.head.prev = null
+  } else {
+    this.tail = null
+  }
+  this.length--
+  return res
+}
+
+Yallist.prototype.forEach = function (fn, thisp) {
+  thisp = thisp || this
+  for (var walker = this.head, i = 0; walker !== null; i++) {
+    fn.call(thisp, walker.value, i, this)
+    walker = walker.next
+  }
+}
+
+Yallist.prototype.forEachReverse = function (fn, thisp) {
+  thisp = thisp || this
+  for (var walker = this.tail, i = this.length - 1; walker !== null; i--) {
+    fn.call(thisp, walker.value, i, this)
+    walker = walker.prev
+  }
+}
+
+Yallist.prototype.get = function (n) {
+  for (var i = 0, walker = this.head; walker !== null && i < n; i++) {
+    // abort out of the list early if we hit a cycle
+    walker = walker.next
+  }
+  if (i === n && walker !== null) {
+    return walker.value
+  }
+}
+
+Yallist.prototype.getReverse = function (n) {
+  for (var i = 0, walker = this.tail; walker !== null && i < n; i++) {
+    // abort out of the list early if we hit a cycle
+    walker = walker.prev
+  }
+  if (i === n && walker !== null) {
+    return walker.value
+  }
+}
+
+Yallist.prototype.map = function (fn, thisp) {
+  thisp = thisp || this
+  var res = new Yallist()
+  for (var walker = this.head; walker !== null;) {
+    res.push(fn.call(thisp, walker.value, this))
+    walker = walker.next
+  }
+  return res
+}
+
+Yallist.prototype.mapReverse = function (fn, thisp) {
+  thisp = thisp || this
+  var res = new Yallist()
+  for (var walker = this.tail; walker !== null;) {
+    res.push(fn.call(thisp, walker.value, this))
+    walker = walker.prev
+  }
+  return res
+}
+
+Yallist.prototype.reduce = function (fn, initial) {
+  var acc
+  var walker = this.head
+  if (arguments.length > 1) {
+    acc = initial
+  } else if (this.head) {
+    walker = this.head.next
+    acc = this.head.value
+  } else {
+    throw new TypeError('Reduce of empty list with no initial value')
+  }
+
+  for (var i = 0; walker !== null; i++) {
+    acc = fn(acc, walker.value, i)
+    walker = walker.next
+  }
+
+  return acc
+}
+
+Yallist.prototype.reduceReverse = function (fn, initial) {
+  var acc
+  var walker = this.tail
+  if (arguments.length > 1) {
+    acc = initial
+  } else if (this.tail) {
+    walker = this.tail.prev
+    acc = this.tail.value
+  } else {
+    throw new TypeError('Reduce of empty list with no initial value')
+  }
+
+  for (var i = this.length - 1; walker !== null; i--) {
+    acc = fn(acc, walker.value, i)
+    walker = walker.prev
+  }
+
+  return acc
+}
+
+Yallist.prototype.toArray = function () {
+  var arr = new Array(this.length)
+  for (var i = 0, walker = this.head; walker !== null; i++) {
+    arr[i] = walker.value
+    walker = walker.next
+  }
+  return arr
+}
+
+Yallist.prototype.toArrayReverse = function () {
+  var arr = new Array(this.length)
+  for (var i = 0, walker = this.tail; walker !== null; i++) {
+    arr[i] = walker.value
+    walker = walker.prev
+  }
+  return arr
+}
+
+Yallist.prototype.slice = function (from, to) {
+  to = to || this.length
+  if (to < 0) {
+    to += this.length
+  }
+  from = from || 0
+  if (from < 0) {
+    from += this.length
+  }
+  var ret = new Yallist()
+  if (to < from || to < 0) {
+    return ret
+  }
+  if (from < 0) {
+    from = 0
+  }
+  if (to > this.length) {
+    to = this.length
+  }
+  for (var i = 0, walker = this.head; walker !== null && i < from; i++) {
+    walker = walker.next
+  }
+  for (; walker !== null && i < to; i++, walker = walker.next) {
+    ret.push(walker.value)
+  }
+  return ret
+}
+
+Yallist.prototype.sliceReverse = function (from, to) {
+  to = to || this.length
+  if (to < 0) {
+    to += this.length
+  }
+  from = from || 0
+  if (from < 0) {
+    from += this.length
+  }
+  var ret = new Yallist()
+  if (to < from || to < 0) {
+    return ret
+  }
+  if (from < 0) {
+    from = 0
+  }
+  if (to > this.length) {
+    to = this.length
+  }
+  for (var i = this.length, walker = this.tail; walker !== null && i > to; i--) {
+    walker = walker.prev
+  }
+  for (; walker !== null && i > from; i--, walker = walker.prev) {
+    ret.push(walker.value)
+  }
+  return ret
+}
+
+Yallist.prototype.splice = function (start, deleteCount, ...nodes) {
+  if (start > this.length) {
+    start = this.length - 1
+  }
+  if (start < 0) {
+    start = this.length + start;
+  }
+
+  for (var i = 0, walker = this.head; walker !== null && i < start; i++) {
+    walker = walker.next
+  }
+
+  var ret = []
+  for (var i = 0; walker && i < deleteCount; i++) {
+    ret.push(walker.value)
+    walker = this.removeNode(walker)
+  }
+  if (walker === null) {
+    walker = this.tail
+  }
+
+  if (walker !== this.head && walker !== this.tail) {
+    walker = walker.prev
+  }
+
+  for (var i = 0; i < nodes.length; i++) {
+    walker = insert(this, walker, nodes[i])
+  }
+  return ret;
+}
+
+Yallist.prototype.reverse = function () {
+  var head = this.head
+  var tail = this.tail
+  for (var walker = head; walker !== null; walker = walker.prev) {
+    var p = walker.prev
+    walker.prev = walker.next
+    walker.next = p
+  }
+  this.head = tail
+  this.tail = head
+  return this
+}
+
+function insert (self, node, value) {
+  var inserted = node === self.head ?
+    new Node(value, null, node, self) :
+    new Node(value, node, node.next, self)
+
+  if (inserted.next === null) {
+    self.tail = inserted
+  }
+  if (inserted.prev === null) {
+    self.head = inserted
+  }
+
+  self.length++
+
+  return inserted
+}
+
+function push (self, item) {
+  self.tail = new Node(item, self.tail, null, self)
+  if (!self.head) {
+    self.head = self.tail
+  }
+  self.length++
+}
+
+function unshift (self, item) {
+  self.head = new Node(item, null, self.head, self)
+  if (!self.tail) {
+    self.tail = self.head
+  }
+  self.length++
+}
+
+function Node (value, prev, next, list) {
+  if (!(this instanceof Node)) {
+    return new Node(value, prev, next, list)
+  }
+
+  this.list = list
+  this.value = value
+
+  if (prev) {
+    prev.next = this
+    this.prev = prev
+  } else {
+    this.prev = null
+  }
+
+  if (next) {
+    next.prev = this
+    this.next = next
+  } else {
+    this.next = null
+  }
+}
+
+try {
+  // add if support for Symbol.iterator is present
+  require('./iterator.js')(Yallist)
+} catch (er) {}
diff --git a/node_modules/fs-minipass/package.json b/node_modules/fs-minipass/package.json
index 870d08f6f..01635bd8d 100644
--- a/node_modules/fs-minipass/package.json
+++ b/node_modules/fs-minipass/package.json
@@ -1,30 +1,27 @@
 {
-  "_from": "fs-minipass@^1.2.5",
-  "_id": "fs-minipass@1.2.7",
+  "_from": "fs-minipass@^2.0.0",
+  "_id": "fs-minipass@2.1.0",
   "_inBundle": false,
-  "_integrity": "sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==",
+  "_integrity": "sha512-V/JgOLFCS+R6Vcq0slCuaeWEdNC3ouDlJMNIsacH2VtALiu9mV4LPrHc5cDl8k5aw6J8jwgWWpiTo5RYhmIzvg==",
   "_location": "/fs-minipass",
-  "_phantomChildren": {
-    "safe-buffer": "5.1.2",
-    "yallist": "3.0.3"
-  },
+  "_phantomChildren": {},
   "_requested": {
     "type": "range",
     "registry": true,
-    "raw": "fs-minipass@^1.2.5",
+    "raw": "fs-minipass@^2.0.0",
     "name": "fs-minipass",
     "escapedName": "fs-minipass",
-    "rawSpec": "^1.2.5",
+    "rawSpec": "^2.0.0",
     "saveSpec": null,
-    "fetchSpec": "^1.2.5"
+    "fetchSpec": "^2.0.0"
   },
   "_requiredBy": [
     "/tar"
   ],
-  "_resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.7.tgz",
-  "_shasum": "ccff8570841e7fe4265693da88936c55aed7f7c7",
-  "_spec": "fs-minipass@^1.2.5",
-  "_where": "/Users/mperrotte/npminc/cli/node_modules/tar",
+  "_resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-2.1.0.tgz",
+  "_shasum": "7f5036fdbf12c63c169190cbe4199c852271f9fb",
+  "_spec": "fs-minipass@^2.0.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/tar",
   "author": {
     "name": "Isaac Z. Schlueter",
     "email": "i@izs.me",
@@ -35,7 +32,7 @@
   },
   "bundleDependencies": false,
   "dependencies": {
-    "minipass": "^2.6.0"
+    "minipass": "^3.0.0"
   },
   "deprecated": false,
   "description": "fs read and write streams based on minipass",
@@ -43,6 +40,9 @@
     "mutate-fs": "^2.0.1",
     "tap": "^14.6.4"
   },
+  "engines": {
+    "node": ">= 8"
+  },
   "files": [
     "index.js"
   ],
@@ -64,5 +64,5 @@
   "tap": {
     "check-coverage": true
   },
-  "version": "1.2.7"
+  "version": "2.1.0"
 }
diff --git a/node_modules/minizlib/README.md b/node_modules/minizlib/README.md
index 4097b8522..80e067ab3 100644
--- a/node_modules/minizlib/README.md
+++ b/node_modules/minizlib/README.md
@@ -51,3 +51,10 @@ const decode = new zlib.BrotliDecompress()
 const output = whereToWriteTheDecodedData()
 input.pipe(decode).pipe(output)
 ```
+
+## REPRODUCIBLE BUILDS
+
+To create reproducible gzip compressed files across different operating
+systems, set `portable: true` in the options.  This causes minizlib to set
+the `OS` indicator in byte 9 of the extended gzip header to `0xFF` for
+'unknown'.
diff --git a/node_modules/minizlib/index.js b/node_modules/minizlib/index.js
index 295047b9c..c84bda1b5 100644
--- a/node_modules/minizlib/index.js
+++ b/node_modules/minizlib/index.js
@@ -9,6 +9,7 @@ const Minipass = require('minipass')
 
 const OriginalBufferConcat = Buffer.concat
 
+const _superWrite = Symbol('_superWrite')
 class ZlibError extends Error {
   constructor (err) {
     super('zlib: ' + err.message)
@@ -164,12 +165,12 @@ class ZlibBase extends Minipass {
       if (Array.isArray(result) && result.length > 0) {
         // The first buffer is always `handle._outBuffer`, which would be
         // re-used for later invocations; so, we always have to copy that one.
-        writeReturn = super.write(Buffer.from(result[0]))
+        writeReturn = this[_superWrite](Buffer.from(result[0]))
         for (let i = 1; i < result.length; i++) {
-          writeReturn = super.write(result[i])
+          writeReturn = this[_superWrite](result[i])
         }
       } else {
-        writeReturn = super.write(Buffer.from(result))
+        writeReturn = this[_superWrite](Buffer.from(result))
       }
     }
 
@@ -177,6 +178,10 @@ class ZlibBase extends Minipass {
       cb()
     return writeReturn
   }
+
+  [_superWrite] (data) {
+    return super.write(data)
+  }
 }
 
 class Zlib extends ZlibBase {
@@ -243,9 +248,22 @@ class Inflate extends Zlib {
 }
 
 // gzip - bigger header, same deflate compression
+const _portable = Symbol('_portable')
 class Gzip extends Zlib {
   constructor (opts) {
     super(opts, 'Gzip')
+    this[_portable] = opts && !!opts.portable
+  }
+
+  [_superWrite] (data) {
+    if (!this[_portable])
+      return super[_superWrite](data)
+
+    // we'll always get the header emitted in one first chunk
+    // overwrite the OS indicator byte with 0xFF
+    this[_portable] = false
+    data[9] = 255
+    return super[_superWrite](data)
   }
 }
 
diff --git a/node_modules/minizlib/node_modules/minipass/README.md b/node_modules/minizlib/node_modules/minipass/README.md
index c989beea0..32ace2fb9 100644
--- a/node_modules/minizlib/node_modules/minipass/README.md
+++ b/node_modules/minizlib/node_modules/minipass/README.md
@@ -7,32 +7,32 @@ stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough)
 fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0)
 for objects, strings, and buffers.
 
-Supports pipe()ing (including multi-pipe() and backpressure
-transmission), buffering data until either a `data` event handler or
-`pipe()` is added (so you don't lose the first chunk), and most other
-cases where PassThrough is a good idea.
+Supports pipe()ing (including multi-pipe() and backpressure transmission),
+buffering data until either a `data` event handler or `pipe()` is added (so
+you don't lose the first chunk), and most other cases where PassThrough is
+a good idea.
 
-There is a `read()` method, but it's much more efficient to consume
-data from this stream via `'data'` events or by calling `pipe()` into
-some other stream.  Calling `read()` requires the buffer to be
-flattened in some cases, which requires copying memory.
+There is a `read()` method, but it's much more efficient to consume data
+from this stream via `'data'` events or by calling `pipe()` into some other
+stream.  Calling `read()` requires the buffer to be flattened in some
+cases, which requires copying memory.
 
-There is also no `unpipe()` method.  Once you start piping, there is
-no stopping it!
+There is also no `unpipe()` method.  Once you start piping, there is no
+stopping it!
 
-If you set `objectMode: true` in the options, then whatever is written
-will be emitted.  Otherwise, it'll do a minimal amount of Buffer
-copying to ensure proper Streams semantics when `read(n)` is called.
+If you set `objectMode: true` in the options, then whatever is written will
+be emitted.  Otherwise, it'll do a minimal amount of Buffer copying to
+ensure proper Streams semantics when `read(n)` is called.
 
 `objectMode` can also be set by doing `stream.objectMode = true`, or by
 writing any non-string/non-buffer data.  `objectMode` cannot be set to
 false once it is set.
 
-This is not a `through` or `through2` stream.  It doesn't transform
-the data, it just passes it right through.  If you want to transform
-the data, extend the class, and override the `write()` method.  Once
-you're done transforming the data however you want, call
-`super.write()` with the transform output.
+This is not a `through` or `through2` stream.  It doesn't transform the
+data, it just passes it right through.  If you want to transform the data,
+extend the class, and override the `write()` method.  Once you're done
+transforming the data however you want, call `super.write()` with the
+transform output.
 
 For some examples of streams that extend Minipass in various ways, check
 out:
@@ -46,6 +46,7 @@ out:
 - [tap](http://npm.im/tap)
 - [tap-parser](http://npm.im/tap)
 - [treport](http://npm.im/tap)
+- [minipass-fetch](http://npm.im/minipass-fetch)
 
 ## Differences from Node.js Streams
 
@@ -252,7 +253,8 @@ src.pipe(tee)
 
 ## USAGE
 
-It's a stream!  Use it like a stream and it'll most likely do what you want.
+It's a stream!  Use it like a stream and it'll most likely do what you
+want.
 
 ```js
 const Minipass = require('minipass')
@@ -280,31 +282,30 @@ streams.
 
 * `write(chunk, [encoding], [callback])` - Put data in.  (Note that, in the
   base Minipass class, the same data will come out.)  Returns `false` if
-  the stream will buffer the next write, or true if it's still in
-  "flowing" mode.
+  the stream will buffer the next write, or true if it's still in "flowing"
+  mode.
 * `end([chunk, [encoding]], [callback])` - Signal that you have no more
   data to write.  This will queue an `end` event to be fired when all the
   data has been consumed.
-* `setEncoding(encoding)` - Set the encoding for data coming of the
-  stream.  This can only be done once.
+* `setEncoding(encoding)` - Set the encoding for data coming of the stream.
+  This can only be done once.
 * `pause()` - No more data for a while, please.  This also prevents `end`
   from being emitted for empty streams until the stream is resumed.
-* `resume()` - Resume the stream.  If there's data in the buffer, it is
-  all discarded.  Any buffered events are immediately emitted.
+* `resume()` - Resume the stream.  If there's data in the buffer, it is all
+  discarded.  Any buffered events are immediately emitted.
 * `pipe(dest)` - Send all output to the stream provided.  There is no way
   to unpipe.  When data is emitted, it is immediately written to any and
   all pipe destinations.
-* `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters.
-  Some events are given special treatment, however.  (See below under
-  "events".)
+* `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters.  Some
+  events are given special treatment, however.  (See below under "events".)
 * `promise()` - Returns a Promise that resolves when the stream emits
   `end`, or rejects if the stream emits `error`.
 * `collect()` - Return a Promise that resolves on `end` with an array
-  containing each chunk of data that was emitted, or rejects if the
-  stream emits `error`.  Note that this consumes the stream data.
-* `concat()` - Same as `collect()`, but concatenates the data into a
-  single Buffer object.  Will reject the returned promise if the stream is
-  in objectMode, or if it goes into objectMode by the end of the data.
+  containing each chunk of data that was emitted, or rejects if the stream
+  emits `error`.  Note that this consumes the stream data.
+* `concat()` - Same as `collect()`, but concatenates the data into a single
+  Buffer object.  Will reject the returned promise if the stream is in
+  objectMode, or if it goes into objectMode by the end of the data.
 * `read(n)` - Consume `n` bytes of data out of the buffer.  If `n` is not
   provided, then consume all of it.  If `n` bytes are not available, then
   it returns null.  **Note** consuming streams in this way is less
@@ -421,8 +422,8 @@ mp.concat().then(onebigchunk => {
 
 ### iteration
 
-You can iterate over streams synchronously or asynchronously in
-platforms that support it.
+You can iterate over streams synchronously or asynchronously in platforms
+that support it.
 
 Synchronous iteration will end when the currently available data is
 consumed, even if the `end` event has not been reached.  In string and
@@ -430,9 +431,8 @@ buffer mode, the data is concatenated, so unless multiple writes are
 occurring in the same tick as the `read()`, sync iteration loops will
 generally only have a single iteration.
 
-To consume chunks in this way exactly as they have been written, with
-no flattening, create the stream with the `{ objectMode: true }`
-option.
+To consume chunks in this way exactly as they have been written, with no
+flattening, create the stream with the `{ objectMode: true }` option.
 
 ```js
 const mp = new Minipass({ objectMode: true })
diff --git a/node_modules/minizlib/node_modules/minipass/index.js b/node_modules/minizlib/node_modules/minipass/index.js
index c072352d4..55ea0f3dd 100644
--- a/node_modules/minizlib/node_modules/minipass/index.js
+++ b/node_modules/minizlib/node_modules/minipass/index.js
@@ -1,5 +1,6 @@
 'use strict'
 const EE = require('events')
+const Stream = require('stream')
 const Yallist = require('yallist')
 const SD = require('string_decoder').StringDecoder
 
@@ -29,12 +30,6 @@ const ASYNCITERATOR = doIter && Symbol.asyncIterator
 const ITERATOR = doIter && Symbol.iterator
   || Symbol('iterator not implemented')
 
-// Buffer in node 4.x < 4.5.0 doesn't have working Buffer.from
-// or Buffer.alloc, and Buffer in node 10 deprecated the ctor.
-// .M, this is fine .\^/M..
-const B = Buffer.alloc ? Buffer
-  : /* istanbul ignore next */ require('safe-buffer').Buffer
-
 // events that mean 'the stream is over'
 // these are treated specially, and re-emitted
 // if they are listened for after emitting.
@@ -49,9 +44,9 @@ const isArrayBuffer = b => b instanceof ArrayBuffer ||
   b.constructor.name === 'ArrayBuffer' &&
   b.byteLength >= 0
 
-const isArrayBufferView = b => !B.isBuffer(b) && ArrayBuffer.isView(b)
+const isArrayBufferView = b => !Buffer.isBuffer(b) && ArrayBuffer.isView(b)
 
-module.exports = class Minipass extends EE {
+module.exports = class Minipass extends Stream {
   constructor (options) {
     super()
     this[FLOWING] = false
@@ -126,11 +121,11 @@ module.exports = class Minipass extends EE {
     // at some point in the future, we may want to do the opposite!
     // leave strings and buffers as-is
     // anything else switches us into object mode
-    if (!this[OBJECTMODE] && !B.isBuffer(chunk)) {
+    if (!this[OBJECTMODE] && !Buffer.isBuffer(chunk)) {
       if (isArrayBufferView(chunk))
-        chunk = B.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)
+        chunk = Buffer.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)
       else if (isArrayBuffer(chunk))
-        chunk = B.from(chunk)
+        chunk = Buffer.from(chunk)
       else if (typeof chunk !== 'string')
         // use the setter so we throw if we have encoding set
         this.objectMode = true
@@ -152,10 +147,10 @@ module.exports = class Minipass extends EE {
     if (typeof chunk === 'string' && !this[OBJECTMODE] &&
         // unless it is a string already ready for us to use
         !(encoding === this[ENCODING] && !this[DECODER].lastNeed)) {
-      chunk = B.from(chunk, encoding)
+      chunk = Buffer.from(chunk, encoding)
     }
 
-    if (B.isBuffer(chunk) && this[ENCODING])
+    if (Buffer.isBuffer(chunk) && this[ENCODING])
       chunk = this[DECODER].write(chunk)
 
     try {
@@ -188,7 +183,7 @@ module.exports = class Minipass extends EE {
           ])
         else
           this.buffer = new Yallist([
-            B.concat(Array.from(this.buffer), this[BUFFERLENGTH])
+            Buffer.concat(Array.from(this.buffer), this[BUFFERLENGTH])
           ])
       }
 
@@ -423,12 +418,17 @@ module.exports = class Minipass extends EE {
   // const all = await stream.collect()
   collect () {
     const buf = []
-    buf.dataLength = 0
+    if (!this[OBJECTMODE])
+      buf.dataLength = 0
+    // set the promise first, in case an error is raised
+    // by triggering the flow here.
+    const p = this.promise()
     this.on('data', c => {
       buf.push(c)
-      buf.dataLength += c.length
+      if (!this[OBJECTMODE])
+        buf.dataLength += c.length
     })
-    return this.promise().then(() => buf)
+    return p.then(() => buf)
   }
 
   // const data = await stream.concat()
@@ -438,7 +438,7 @@ module.exports = class Minipass extends EE {
       : this.collect().then(buf =>
           this[OBJECTMODE]
             ? Promise.reject(new Error('cannot concat in objectMode'))
-            : this[ENCODING] ? buf.join('') : B.concat(buf, buf.dataLength))
+            : this[ENCODING] ? buf.join('') : Buffer.concat(buf, buf.dataLength))
   }
 
   // stream.promise().then(() => done, er => emitted error)
@@ -529,9 +529,10 @@ module.exports = class Minipass extends EE {
   }
 
   static isStream (s) {
-    return !!s && (s instanceof Minipass || s instanceof EE && (
-      typeof s.pipe === 'function' || // readable
-      (typeof s.write === 'function' && typeof s.end === 'function') // writable
-    ))
+    return !!s && (s instanceof Minipass || s instanceof Stream ||
+      s instanceof EE && (
+        typeof s.pipe === 'function' || // readable
+        (typeof s.write === 'function' && typeof s.end === 'function') // writable
+      ))
   }
 }
diff --git a/node_modules/minizlib/node_modules/minipass/package.json b/node_modules/minizlib/node_modules/minipass/package.json
index 57284172b..88791e4dd 100644
--- a/node_modules/minizlib/node_modules/minipass/package.json
+++ b/node_modules/minizlib/node_modules/minipass/package.json
@@ -1,27 +1,27 @@
 {
-  "_from": "minipass@^2.9.0",
-  "_id": "minipass@2.9.0",
+  "_from": "minipass@^3.0.0",
+  "_id": "minipass@3.1.1",
   "_inBundle": false,
-  "_integrity": "sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==",
+  "_integrity": "sha512-UFqVihv6PQgwj8/yTGvl9kPz7xIAY+R5z6XYjRInD3Gk3qx6QGSD6zEcpeG4Dy/lQnv1J6zv8ejV90hyYIKf3w==",
   "_location": "/minizlib/minipass",
   "_phantomChildren": {},
   "_requested": {
     "type": "range",
     "registry": true,
-    "raw": "minipass@^2.9.0",
+    "raw": "minipass@^3.0.0",
     "name": "minipass",
     "escapedName": "minipass",
-    "rawSpec": "^2.9.0",
+    "rawSpec": "^3.0.0",
     "saveSpec": null,
-    "fetchSpec": "^2.9.0"
+    "fetchSpec": "^3.0.0"
   },
   "_requiredBy": [
     "/minizlib"
   ],
-  "_resolved": "https://registry.npmjs.org/minipass/-/minipass-2.9.0.tgz",
-  "_shasum": "e713762e7d3e32fed803115cf93e04bca9fcc9a6",
-  "_spec": "minipass@^2.9.0",
-  "_where": "/Users/mperrotte/npminc/cli/node_modules/minizlib",
+  "_resolved": "https://registry.npmjs.org/minipass/-/minipass-3.1.1.tgz",
+  "_shasum": "7607ce778472a185ad6d89082aa2070f79cedcd5",
+  "_spec": "minipass@^3.0.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/minizlib",
   "author": {
     "name": "Isaac Z. Schlueter",
     "email": "i@izs.me",
@@ -32,8 +32,7 @@
   },
   "bundleDependencies": false,
   "dependencies": {
-    "safe-buffer": "^5.1.2",
-    "yallist": "^3.0.0"
+    "yallist": "^4.0.0"
   },
   "deprecated": false,
   "description": "minimal implementation of a PassThrough stream",
@@ -42,6 +41,9 @@
     "tap": "^14.6.5",
     "through2": "^2.0.3"
   },
+  "engines": {
+    "node": ">=8"
+  },
   "files": [
     "index.js"
   ],
@@ -59,12 +61,12 @@
   },
   "scripts": {
     "postpublish": "git push origin --follow-tags",
-    "postversion": "npm publish",
+    "postversion": "npm publish --tag=next",
     "preversion": "npm test",
     "test": "tap"
   },
   "tap": {
     "check-coverage": true
   },
-  "version": "2.9.0"
+  "version": "3.1.1"
 }
diff --git a/node_modules/minizlib/node_modules/yallist/LICENSE b/node_modules/minizlib/node_modules/yallist/LICENSE
new file mode 100644
index 000000000..19129e315
--- /dev/null
+++ b/node_modules/minizlib/node_modules/yallist/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/minizlib/node_modules/yallist/README.md b/node_modules/minizlib/node_modules/yallist/README.md
new file mode 100644
index 000000000..f58610186
--- /dev/null
+++ b/node_modules/minizlib/node_modules/yallist/README.md
@@ -0,0 +1,204 @@
+# yallist
+
+Yet Another Linked List
+
+There are many doubly-linked list implementations like it, but this
+one is mine.
+
+For when an array would be too big, and a Map can't be iterated in
+reverse order.
+
+
+[![Build Status](https://travis-ci.org/isaacs/yallist.svg?branch=master)](https://travis-ci.org/isaacs/yallist) [![Coverage Status](https://coveralls.io/repos/isaacs/yallist/badge.svg?service=github)](https://coveralls.io/github/isaacs/yallist)
+
+## basic usage
+
+```javascript
+var yallist = require('yallist')
+var myList = yallist.create([1, 2, 3])
+myList.push('foo')
+myList.unshift('bar')
+// of course pop() and shift() are there, too
+console.log(myList.toArray()) // ['bar', 1, 2, 3, 'foo']
+myList.forEach(function (k) {
+  // walk the list head to tail
+})
+myList.forEachReverse(function (k, index, list) {
+  // walk the list tail to head
+})
+var myDoubledList = myList.map(function (k) {
+  return k + k
+})
+// now myDoubledList contains ['barbar', 2, 4, 6, 'foofoo']
+// mapReverse is also a thing
+var myDoubledListReverse = myList.mapReverse(function (k) {
+  return k + k
+}) // ['foofoo', 6, 4, 2, 'barbar']
+
+var reduced = myList.reduce(function (set, entry) {
+  set += entry
+  return set
+}, 'start')
+console.log(reduced) // 'startfoo123bar'
+```
+
+## api
+
+The whole API is considered "public".
+
+Functions with the same name as an Array method work more or less the
+same way.
+
+There's reverse versions of most things because that's the point.
+
+### Yallist
+
+Default export, the class that holds and manages a list.
+
+Call it with either a forEach-able (like an array) or a set of
+arguments, to initialize the list.
+
+The Array-ish methods all act like you'd expect.  No magic length,
+though, so if you change that it won't automatically prune or add
+empty spots.
+
+### Yallist.create(..)
+
+Alias for Yallist function.  Some people like factories.
+
+#### yallist.head
+
+The first node in the list
+
+#### yallist.tail
+
+The last node in the list
+
+#### yallist.length
+
+The number of nodes in the list.  (Change this at your peril.  It is
+not magic like Array length.)
+
+#### yallist.toArray()
+
+Convert the list to an array.
+
+#### yallist.forEach(fn, [thisp])
+
+Call a function on each item in the list.
+
+#### yallist.forEachReverse(fn, [thisp])
+
+Call a function on each item in the list, in reverse order.
+
+#### yallist.get(n)
+
+Get the data at position `n` in the list.  If you use this a lot,
+probably better off just using an Array.
+
+#### yallist.getReverse(n)
+
+Get the data at position `n`, counting from the tail.
+
+#### yallist.map(fn, thisp)
+
+Create a new Yallist with the result of calling the function on each
+item.
+
+#### yallist.mapReverse(fn, thisp)
+
+Same as `map`, but in reverse.
+
+#### yallist.pop()
+
+Get the data from the list tail, and remove the tail from the list.
+
+#### yallist.push(item, ...)
+
+Insert one or more items to the tail of the list.
+
+#### yallist.reduce(fn, initialValue)
+
+Like Array.reduce.
+
+#### yallist.reduceReverse
+
+Like Array.reduce, but in reverse.
+
+#### yallist.reverse
+
+Reverse the list in place.
+
+#### yallist.shift()
+
+Get the data from the list head, and remove the head from the list.
+
+#### yallist.slice([from], [to])
+
+Just like Array.slice, but returns a new Yallist.
+
+#### yallist.sliceReverse([from], [to])
+
+Just like yallist.slice, but the result is returned in reverse.
+
+#### yallist.toArray()
+
+Create an array representation of the list.
+
+#### yallist.toArrayReverse()
+
+Create a reversed array representation of the list.
+
+#### yallist.unshift(item, ...)
+
+Insert one or more items to the head of the list.
+
+#### yallist.unshiftNode(node)
+
+Move a Node object to the front of the list.  (That is, pull it out of
+wherever it lives, and make it the new head.)
+
+If the node belongs to a different list, then that list will remove it
+first.
+
+#### yallist.pushNode(node)
+
+Move a Node object to the end of the list.  (That is, pull it out of
+wherever it lives, and make it the new tail.)
+
+If the node belongs to a list already, then that list will remove it
+first.
+
+#### yallist.removeNode(node)
+
+Remove a node from the list, preserving referential integrity of head
+and tail and other nodes.
+
+Will throw an error if you try to have a list remove a node that
+doesn't belong to it.
+
+### Yallist.Node
+
+The class that holds the data and is actually the list.
+
+Call with `var n = new Node(value, previousNode, nextNode)`
+
+Note that if you do direct operations on Nodes themselves, it's very
+easy to get into weird states where the list is broken.  Be careful :)
+
+#### node.next
+
+The next node in the list.
+
+#### node.prev
+
+The previous node in the list.
+
+#### node.value
+
+The data the node contains.
+
+#### node.list
+
+The list to which this node belongs.  (Null if it does not belong to
+any list.)
diff --git a/node_modules/minizlib/node_modules/yallist/iterator.js b/node_modules/minizlib/node_modules/yallist/iterator.js
new file mode 100644
index 000000000..d41c97a19
--- /dev/null
+++ b/node_modules/minizlib/node_modules/yallist/iterator.js
@@ -0,0 +1,8 @@
+'use strict'
+module.exports = function (Yallist) {
+  Yallist.prototype[Symbol.iterator] = function* () {
+    for (let walker = this.head; walker; walker = walker.next) {
+      yield walker.value
+    }
+  }
+}
diff --git a/node_modules/minizlib/node_modules/yallist/package.json b/node_modules/minizlib/node_modules/yallist/package.json
new file mode 100644
index 000000000..b89de41e4
--- /dev/null
+++ b/node_modules/minizlib/node_modules/yallist/package.json
@@ -0,0 +1,63 @@
+{
+  "_from": "yallist@^4.0.0",
+  "_id": "yallist@4.0.0",
+  "_inBundle": false,
+  "_integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+  "_location": "/minizlib/yallist",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "yallist@^4.0.0",
+    "name": "yallist",
+    "escapedName": "yallist",
+    "rawSpec": "^4.0.0",
+    "saveSpec": null,
+    "fetchSpec": "^4.0.0"
+  },
+  "_requiredBy": [
+    "/minizlib",
+    "/minizlib/minipass"
+  ],
+  "_resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+  "_shasum": "9bb92790d9c0effec63be73519e11a35019a3a72",
+  "_spec": "yallist@^4.0.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/minizlib",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/yallist/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Yet Another Linked List",
+  "devDependencies": {
+    "tap": "^12.1.0"
+  },
+  "directories": {
+    "test": "test"
+  },
+  "files": [
+    "yallist.js",
+    "iterator.js"
+  ],
+  "homepage": "https://github.com/isaacs/yallist#readme",
+  "license": "ISC",
+  "main": "yallist.js",
+  "name": "yallist",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/yallist.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --all; git push origin --tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap test/*.js --100"
+  },
+  "version": "4.0.0"
+}
diff --git a/node_modules/minizlib/node_modules/yallist/yallist.js b/node_modules/minizlib/node_modules/yallist/yallist.js
new file mode 100644
index 000000000..4e83ab1c5
--- /dev/null
+++ b/node_modules/minizlib/node_modules/yallist/yallist.js
@@ -0,0 +1,426 @@
+'use strict'
+module.exports = Yallist
+
+Yallist.Node = Node
+Yallist.create = Yallist
+
+function Yallist (list) {
+  var self = this
+  if (!(self instanceof Yallist)) {
+    self = new Yallist()
+  }
+
+  self.tail = null
+  self.head = null
+  self.length = 0
+
+  if (list && typeof list.forEach === 'function') {
+    list.forEach(function (item) {
+      self.push(item)
+    })
+  } else if (arguments.length > 0) {
+    for (var i = 0, l = arguments.length; i < l; i++) {
+      self.push(arguments[i])
+    }
+  }
+
+  return self
+}
+
+Yallist.prototype.removeNode = function (node) {
+  if (node.list !== this) {
+    throw new Error('removing node which does not belong to this list')
+  }
+
+  var next = node.next
+  var prev = node.prev
+
+  if (next) {
+    next.prev = prev
+  }
+
+  if (prev) {
+    prev.next = next
+  }
+
+  if (node === this.head) {
+    this.head = next
+  }
+  if (node === this.tail) {
+    this.tail = prev
+  }
+
+  node.list.length--
+  node.next = null
+  node.prev = null
+  node.list = null
+
+  return next
+}
+
+Yallist.prototype.unshiftNode = function (node) {
+  if (node === this.head) {
+    return
+  }
+
+  if (node.list) {
+    node.list.removeNode(node)
+  }
+
+  var head = this.head
+  node.list = this
+  node.next = head
+  if (head) {
+    head.prev = node
+  }
+
+  this.head = node
+  if (!this.tail) {
+    this.tail = node
+  }
+  this.length++
+}
+
+Yallist.prototype.pushNode = function (node) {
+  if (node === this.tail) {
+    return
+  }
+
+  if (node.list) {
+    node.list.removeNode(node)
+  }
+
+  var tail = this.tail
+  node.list = this
+  node.prev = tail
+  if (tail) {
+    tail.next = node
+  }
+
+  this.tail = node
+  if (!this.head) {
+    this.head = node
+  }
+  this.length++
+}
+
+Yallist.prototype.push = function () {
+  for (var i = 0, l = arguments.length; i < l; i++) {
+    push(this, arguments[i])
+  }
+  return this.length
+}
+
+Yallist.prototype.unshift = function () {
+  for (var i = 0, l = arguments.length; i < l; i++) {
+    unshift(this, arguments[i])
+  }
+  return this.length
+}
+
+Yallist.prototype.pop = function () {
+  if (!this.tail) {
+    return undefined
+  }
+
+  var res = this.tail.value
+  this.tail = this.tail.prev
+  if (this.tail) {
+    this.tail.next = null
+  } else {
+    this.head = null
+  }
+  this.length--
+  return res
+}
+
+Yallist.prototype.shift = function () {
+  if (!this.head) {
+    return undefined
+  }
+
+  var res = this.head.value
+  this.head = this.head.next
+  if (this.head) {
+    this.head.prev = null
+  } else {
+    this.tail = null
+  }
+  this.length--
+  return res
+}
+
+Yallist.prototype.forEach = function (fn, thisp) {
+  thisp = thisp || this
+  for (var walker = this.head, i = 0; walker !== null; i++) {
+    fn.call(thisp, walker.value, i, this)
+    walker = walker.next
+  }
+}
+
+Yallist.prototype.forEachReverse = function (fn, thisp) {
+  thisp = thisp || this
+  for (var walker = this.tail, i = this.length - 1; walker !== null; i--) {
+    fn.call(thisp, walker.value, i, this)
+    walker = walker.prev
+  }
+}
+
+Yallist.prototype.get = function (n) {
+  for (var i = 0, walker = this.head; walker !== null && i < n; i++) {
+    // abort out of the list early if we hit a cycle
+    walker = walker.next
+  }
+  if (i === n && walker !== null) {
+    return walker.value
+  }
+}
+
+Yallist.prototype.getReverse = function (n) {
+  for (var i = 0, walker = this.tail; walker !== null && i < n; i++) {
+    // abort out of the list early if we hit a cycle
+    walker = walker.prev
+  }
+  if (i === n && walker !== null) {
+    return walker.value
+  }
+}
+
+Yallist.prototype.map = function (fn, thisp) {
+  thisp = thisp || this
+  var res = new Yallist()
+  for (var walker = this.head; walker !== null;) {
+    res.push(fn.call(thisp, walker.value, this))
+    walker = walker.next
+  }
+  return res
+}
+
+Yallist.prototype.mapReverse = function (fn, thisp) {
+  thisp = thisp || this
+  var res = new Yallist()
+  for (var walker = this.tail; walker !== null;) {
+    res.push(fn.call(thisp, walker.value, this))
+    walker = walker.prev
+  }
+  return res
+}
+
+Yallist.prototype.reduce = function (fn, initial) {
+  var acc
+  var walker = this.head
+  if (arguments.length > 1) {
+    acc = initial
+  } else if (this.head) {
+    walker = this.head.next
+    acc = this.head.value
+  } else {
+    throw new TypeError('Reduce of empty list with no initial value')
+  }
+
+  for (var i = 0; walker !== null; i++) {
+    acc = fn(acc, walker.value, i)
+    walker = walker.next
+  }
+
+  return acc
+}
+
+Yallist.prototype.reduceReverse = function (fn, initial) {
+  var acc
+  var walker = this.tail
+  if (arguments.length > 1) {
+    acc = initial
+  } else if (this.tail) {
+    walker = this.tail.prev
+    acc = this.tail.value
+  } else {
+    throw new TypeError('Reduce of empty list with no initial value')
+  }
+
+  for (var i = this.length - 1; walker !== null; i--) {
+    acc = fn(acc, walker.value, i)
+    walker = walker.prev
+  }
+
+  return acc
+}
+
+Yallist.prototype.toArray = function () {
+  var arr = new Array(this.length)
+  for (var i = 0, walker = this.head; walker !== null; i++) {
+    arr[i] = walker.value
+    walker = walker.next
+  }
+  return arr
+}
+
+Yallist.prototype.toArrayReverse = function () {
+  var arr = new Array(this.length)
+  for (var i = 0, walker = this.tail; walker !== null; i++) {
+    arr[i] = walker.value
+    walker = walker.prev
+  }
+  return arr
+}
+
+Yallist.prototype.slice = function (from, to) {
+  to = to || this.length
+  if (to < 0) {
+    to += this.length
+  }
+  from = from || 0
+  if (from < 0) {
+    from += this.length
+  }
+  var ret = new Yallist()
+  if (to < from || to < 0) {
+    return ret
+  }
+  if (from < 0) {
+    from = 0
+  }
+  if (to > this.length) {
+    to = this.length
+  }
+  for (var i = 0, walker = this.head; walker !== null && i < from; i++) {
+    walker = walker.next
+  }
+  for (; walker !== null && i < to; i++, walker = walker.next) {
+    ret.push(walker.value)
+  }
+  return ret
+}
+
+Yallist.prototype.sliceReverse = function (from, to) {
+  to = to || this.length
+  if (to < 0) {
+    to += this.length
+  }
+  from = from || 0
+  if (from < 0) {
+    from += this.length
+  }
+  var ret = new Yallist()
+  if (to < from || to < 0) {
+    return ret
+  }
+  if (from < 0) {
+    from = 0
+  }
+  if (to > this.length) {
+    to = this.length
+  }
+  for (var i = this.length, walker = this.tail; walker !== null && i > to; i--) {
+    walker = walker.prev
+  }
+  for (; walker !== null && i > from; i--, walker = walker.prev) {
+    ret.push(walker.value)
+  }
+  return ret
+}
+
+Yallist.prototype.splice = function (start, deleteCount, ...nodes) {
+  if (start > this.length) {
+    start = this.length - 1
+  }
+  if (start < 0) {
+    start = this.length + start;
+  }
+
+  for (var i = 0, walker = this.head; walker !== null && i < start; i++) {
+    walker = walker.next
+  }
+
+  var ret = []
+  for (var i = 0; walker && i < deleteCount; i++) {
+    ret.push(walker.value)
+    walker = this.removeNode(walker)
+  }
+  if (walker === null) {
+    walker = this.tail
+  }
+
+  if (walker !== this.head && walker !== this.tail) {
+    walker = walker.prev
+  }
+
+  for (var i = 0; i < nodes.length; i++) {
+    walker = insert(this, walker, nodes[i])
+  }
+  return ret;
+}
+
+Yallist.prototype.reverse = function () {
+  var head = this.head
+  var tail = this.tail
+  for (var walker = head; walker !== null; walker = walker.prev) {
+    var p = walker.prev
+    walker.prev = walker.next
+    walker.next = p
+  }
+  this.head = tail
+  this.tail = head
+  return this
+}
+
+function insert (self, node, value) {
+  var inserted = node === self.head ?
+    new Node(value, null, node, self) :
+    new Node(value, node, node.next, self)
+
+  if (inserted.next === null) {
+    self.tail = inserted
+  }
+  if (inserted.prev === null) {
+    self.head = inserted
+  }
+
+  self.length++
+
+  return inserted
+}
+
+function push (self, item) {
+  self.tail = new Node(item, self.tail, null, self)
+  if (!self.head) {
+    self.head = self.tail
+  }
+  self.length++
+}
+
+function unshift (self, item) {
+  self.head = new Node(item, null, self.head, self)
+  if (!self.tail) {
+    self.tail = self.head
+  }
+  self.length++
+}
+
+function Node (value, prev, next, list) {
+  if (!(this instanceof Node)) {
+    return new Node(value, prev, next, list)
+  }
+
+  this.list = list
+  this.value = value
+
+  if (prev) {
+    prev.next = this
+    this.prev = prev
+  } else {
+    this.prev = null
+  }
+
+  if (next) {
+    next.prev = this
+    this.next = next
+  } else {
+    this.next = null
+  }
+}
+
+try {
+  // add if support for Symbol.iterator is present
+  require('./iterator.js')(Yallist)
+} catch (er) {}
diff --git a/node_modules/minizlib/package.json b/node_modules/minizlib/package.json
index 1284b8c6c..e3107c0b7 100644
--- a/node_modules/minizlib/package.json
+++ b/node_modules/minizlib/package.json
@@ -1,30 +1,27 @@
 {
-  "_from": "minizlib@^1.2.1",
-  "_id": "minizlib@1.3.3",
+  "_from": "minizlib@^2.1.0",
+  "_id": "minizlib@2.1.0",
   "_inBundle": false,
-  "_integrity": "sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==",
+  "_integrity": "sha512-EzTZN/fjSvifSX0SlqUERCN39o6T40AMarPbv0MrarSFtIITCBh7bi+dU8nxGFHuqs9jdIAeoYoKuQAAASsPPA==",
   "_location": "/minizlib",
-  "_phantomChildren": {
-    "safe-buffer": "5.1.2",
-    "yallist": "3.0.3"
-  },
+  "_phantomChildren": {},
   "_requested": {
     "type": "range",
     "registry": true,
-    "raw": "minizlib@^1.2.1",
+    "raw": "minizlib@^2.1.0",
     "name": "minizlib",
     "escapedName": "minizlib",
-    "rawSpec": "^1.2.1",
+    "rawSpec": "^2.1.0",
     "saveSpec": null,
-    "fetchSpec": "^1.2.1"
+    "fetchSpec": "^2.1.0"
   },
   "_requiredBy": [
     "/tar"
   ],
-  "_resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.3.3.tgz",
-  "_shasum": "2290de96818a34c29551c8a8d301216bd65a861d",
-  "_spec": "minizlib@^1.2.1",
-  "_where": "/Users/mperrotte/npminc/cli/node_modules/tar",
+  "_resolved": "https://registry.npmjs.org/minizlib/-/minizlib-2.1.0.tgz",
+  "_shasum": "fd52c645301ef09a63a2c209697c294c6ce02cf3",
+  "_spec": "minizlib@^2.1.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/tar",
   "author": {
     "name": "Isaac Z. Schlueter",
     "email": "i@izs.me",
@@ -35,12 +32,16 @@
   },
   "bundleDependencies": false,
   "dependencies": {
-    "minipass": "^2.9.0"
+    "minipass": "^3.0.0",
+    "yallist": "^4.0.0"
   },
   "deprecated": false,
   "description": "A small fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding.",
   "devDependencies": {
-    "tap": "^12.0.1"
+    "tap": "^14.6.9"
+  },
+  "engines": {
+    "node": ">= 8"
   },
   "files": [
     "index.js",
@@ -70,5 +71,5 @@
     "preversion": "npm test",
     "test": "tap test/*.js --100 -J"
   },
-  "version": "1.3.3"
+  "version": "2.1.0"
 }
diff --git a/node_modules/node-gyp/node_modules/fs-minipass/LICENSE b/node_modules/node-gyp/node_modules/fs-minipass/LICENSE
new file mode 100644
index 000000000..19129e315
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/fs-minipass/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/node-gyp/node_modules/fs-minipass/README.md b/node_modules/node-gyp/node_modules/fs-minipass/README.md
new file mode 100644
index 000000000..1e61241cf
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/fs-minipass/README.md
@@ -0,0 +1,70 @@
+# fs-minipass
+
+Filesystem streams based on [minipass](http://npm.im/minipass).
+
+4 classes are exported:
+
+- ReadStream
+- ReadStreamSync
+- WriteStream
+- WriteStreamSync
+
+When using `ReadStreamSync`, all of the data is made available
+immediately upon consuming the stream.  Nothing is buffered in memory
+when the stream is constructed.  If the stream is piped to a writer,
+then it will synchronously `read()` and emit data into the writer as
+fast as the writer can consume it.  (That is, it will respect
+backpressure.)  If you call `stream.read()` then it will read the
+entire file and return the contents.
+
+When using `WriteStreamSync`, every write is flushed to the file
+synchronously.  If your writes all come in a single tick, then it'll
+write it all out in a single tick.  It's as synchronous as you are.
+
+The async versions work much like their node builtin counterparts,
+with the exception of introducing significantly less Stream machinery
+overhead.
+
+## USAGE
+
+It's just streams, you pipe them or read() them or write() to them.
+
+```js
+const fsm = require('fs-minipass')
+const readStream = new fsm.ReadStream('file.txt')
+const writeStream = new fsm.WriteStream('output.txt')
+writeStream.write('some file header or whatever\n')
+readStream.pipe(writeStream)
+```
+
+## ReadStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `readSize` The size of reads to do, defaults to 16MB
+- `size` The size of the file, if known.  Prevents zero-byte read()
+  call at the end.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+  closed when the file is done being read.
+
+## WriteStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `mode` The mode to create the file with. Defaults to `0o666`.
+- `start` The position in the file to start reading.  If not
+  specified, then the file will start writing at position zero, and be
+  truncated by default.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+  closed when the stream is ended.
+- `flags` Flags to use when opening the file.  Irrelevant if `fd` is
+  passed in, since file won't be opened in that case.  Defaults to
+  `'a'` if a `pos` is specified, or `'w'` otherwise.
diff --git a/node_modules/node-gyp/node_modules/fs-minipass/index.js b/node_modules/node-gyp/node_modules/fs-minipass/index.js
new file mode 100644
index 000000000..cd585a83c
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/fs-minipass/index.js
@@ -0,0 +1,387 @@
+'use strict'
+const MiniPass = require('minipass')
+const EE = require('events').EventEmitter
+const fs = require('fs')
+
+// for writev
+const binding = process.binding('fs')
+const writeBuffers = binding.writeBuffers
+/* istanbul ignore next */
+const FSReqWrap = binding.FSReqWrap || binding.FSReqCallback
+
+const _autoClose = Symbol('_autoClose')
+const _close = Symbol('_close')
+const _ended = Symbol('_ended')
+const _fd = Symbol('_fd')
+const _finished = Symbol('_finished')
+const _flags = Symbol('_flags')
+const _flush = Symbol('_flush')
+const _handleChunk = Symbol('_handleChunk')
+const _makeBuf = Symbol('_makeBuf')
+const _mode = Symbol('_mode')
+const _needDrain = Symbol('_needDrain')
+const _onerror = Symbol('_onerror')
+const _onopen = Symbol('_onopen')
+const _onread = Symbol('_onread')
+const _onwrite = Symbol('_onwrite')
+const _open = Symbol('_open')
+const _path = Symbol('_path')
+const _pos = Symbol('_pos')
+const _queue = Symbol('_queue')
+const _read = Symbol('_read')
+const _readSize = Symbol('_readSize')
+const _reading = Symbol('_reading')
+const _remain = Symbol('_remain')
+const _size = Symbol('_size')
+const _write = Symbol('_write')
+const _writing = Symbol('_writing')
+const _defaultFlag = Symbol('_defaultFlag')
+
+class ReadStream extends MiniPass {
+  constructor (path, opt) {
+    opt = opt || {}
+    super(opt)
+
+    this.writable = false
+
+    if (typeof path !== 'string')
+      throw new TypeError('path must be a string')
+
+    this[_fd] = typeof opt.fd === 'number' ? opt.fd : null
+    this[_path] = path
+    this[_readSize] = opt.readSize || 16*1024*1024
+    this[_reading] = false
+    this[_size] = typeof opt.size === 'number' ? opt.size : Infinity
+    this[_remain] = this[_size]
+    this[_autoClose] = typeof opt.autoClose === 'boolean' ?
+      opt.autoClose : true
+
+    if (typeof this[_fd] === 'number')
+      this[_read]()
+    else
+      this[_open]()
+  }
+
+  get fd () { return this[_fd] }
+  get path () { return this[_path] }
+
+  write () {
+    throw new TypeError('this is a readable stream')
+  }
+
+  end () {
+    throw new TypeError('this is a readable stream')
+  }
+
+  [_open] () {
+    fs.open(this[_path], 'r', (er, fd) => this[_onopen](er, fd))
+  }
+
+  [_onopen] (er, fd) {
+    if (er)
+      this[_onerror](er)
+    else {
+      this[_fd] = fd
+      this.emit('open', fd)
+      this[_read]()
+    }
+  }
+
+  [_makeBuf] () {
+    return Buffer.allocUnsafe(Math.min(this[_readSize], this[_remain]))
+  }
+
+  [_read] () {
+    if (!this[_reading]) {
+      this[_reading] = true
+      const buf = this[_makeBuf]()
+      /* istanbul ignore if */
+      if (buf.length === 0) return process.nextTick(() => this[_onread](null, 0, buf))
+      fs.read(this[_fd], buf, 0, buf.length, null, (er, br, buf) =>
+        this[_onread](er, br, buf))
+    }
+  }
+
+  [_onread] (er, br, buf) {
+    this[_reading] = false
+    if (er)
+      this[_onerror](er)
+    else if (this[_handleChunk](br, buf))
+      this[_read]()
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      fs.close(this[_fd], _ => this.emit('close'))
+      this[_fd] = null
+    }
+  }
+
+  [_onerror] (er) {
+    this[_reading] = true
+    this[_close]()
+    this.emit('error', er)
+  }
+
+  [_handleChunk] (br, buf) {
+    let ret = false
+    // no effect if infinite
+    this[_remain] -= br
+    if (br > 0)
+      ret = super.write(br < buf.length ? buf.slice(0, br) : buf)
+
+    if (br === 0 || this[_remain] <= 0) {
+      ret = false
+      this[_close]()
+      super.end()
+    }
+
+    return ret
+  }
+
+  emit (ev, data) {
+    switch (ev) {
+      case 'prefinish':
+      case 'finish':
+        break
+
+      case 'drain':
+        if (typeof this[_fd] === 'number')
+          this[_read]()
+        break
+
+      default:
+        return super.emit(ev, data)
+    }
+  }
+}
+
+class ReadStreamSync extends ReadStream {
+  [_open] () {
+    let threw = true
+    try {
+      this[_onopen](null, fs.openSync(this[_path], 'r'))
+      threw = false
+    } finally {
+      if (threw)
+        this[_close]()
+    }
+  }
+
+  [_read] () {
+    let threw = true
+    try {
+      if (!this[_reading]) {
+        this[_reading] = true
+        do {
+          const buf = this[_makeBuf]()
+          /* istanbul ignore next */
+          const br = buf.length === 0 ? 0 : fs.readSync(this[_fd], buf, 0, buf.length, null)
+          if (!this[_handleChunk](br, buf))
+            break
+        } while (true)
+        this[_reading] = false
+      }
+      threw = false
+    } finally {
+      if (threw)
+        this[_close]()
+    }
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      try {
+        fs.closeSync(this[_fd])
+      } catch (er) {}
+      this[_fd] = null
+      this.emit('close')
+    }
+  }
+}
+
+class WriteStream extends EE {
+  constructor (path, opt) {
+    opt = opt || {}
+    super(opt)
+    this.readable = false
+    this[_writing] = false
+    this[_ended] = false
+    this[_needDrain] = false
+    this[_queue] = []
+    this[_path] = path
+    this[_fd] = typeof opt.fd === 'number' ? opt.fd : null
+    this[_mode] = opt.mode === undefined ? 0o666 : opt.mode
+    this[_pos] = typeof opt.start === 'number' ? opt.start : null
+    this[_autoClose] = typeof opt.autoClose === 'boolean' ?
+      opt.autoClose : true
+
+    // truncating makes no sense when writing into the middle
+    const defaultFlag = this[_pos] !== null ? 'r+' : 'w'
+    this[_defaultFlag] = opt.flags === undefined
+    this[_flags] = this[_defaultFlag] ? defaultFlag : opt.flags
+
+    if (this[_fd] === null)
+      this[_open]()
+  }
+
+  get fd () { return this[_fd] }
+  get path () { return this[_path] }
+
+  [_onerror] (er) {
+    this[_close]()
+    this[_writing] = true
+    this.emit('error', er)
+  }
+
+  [_open] () {
+    fs.open(this[_path], this[_flags], this[_mode],
+      (er, fd) => this[_onopen](er, fd))
+  }
+
+  [_onopen] (er, fd) {
+    if (this[_defaultFlag] &&
+        this[_flags] === 'r+' &&
+        er && er.code === 'ENOENT') {
+      this[_flags] = 'w'
+      this[_open]()
+    } else if (er)
+      this[_onerror](er)
+    else {
+      this[_fd] = fd
+      this.emit('open', fd)
+      this[_flush]()
+    }
+  }
+
+  end (buf, enc) {
+    if (buf)
+      this.write(buf, enc)
+
+    this[_ended] = true
+
+    // synthetic after-write logic, where drain/finish live
+    if (!this[_writing] && !this[_queue].length &&
+        typeof this[_fd] === 'number')
+      this[_onwrite](null, 0)
+  }
+
+  write (buf, enc) {
+    if (typeof buf === 'string')
+      buf = new Buffer(buf, enc)
+
+    if (this[_ended]) {
+      this.emit('error', new Error('write() after end()'))
+      return false
+    }
+
+    if (this[_fd] === null || this[_writing] || this[_queue].length) {
+      this[_queue].push(buf)
+      this[_needDrain] = true
+      return false
+    }
+
+    this[_writing] = true
+    this[_write](buf)
+    return true
+  }
+
+  [_write] (buf) {
+    fs.write(this[_fd], buf, 0, buf.length, this[_pos], (er, bw) =>
+      this[_onwrite](er, bw))
+  }
+
+  [_onwrite] (er, bw) {
+    if (er)
+      this[_onerror](er)
+    else {
+      if (this[_pos] !== null)
+        this[_pos] += bw
+      if (this[_queue].length)
+        this[_flush]()
+      else {
+        this[_writing] = false
+
+        if (this[_ended] && !this[_finished]) {
+          this[_finished] = true
+          this[_close]()
+          this.emit('finish')
+        } else if (this[_needDrain]) {
+          this[_needDrain] = false
+          this.emit('drain')
+        }
+      }
+    }
+  }
+
+  [_flush] () {
+    if (this[_queue].length === 0) {
+      if (this[_ended])
+        this[_onwrite](null, 0)
+    } else if (this[_queue].length === 1)
+      this[_write](this[_queue].pop())
+    else {
+      const iovec = this[_queue]
+      this[_queue] = []
+      writev(this[_fd], iovec, this[_pos],
+        (er, bw) => this[_onwrite](er, bw))
+    }
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      fs.close(this[_fd], _ => this.emit('close'))
+      this[_fd] = null
+    }
+  }
+}
+
+class WriteStreamSync extends WriteStream {
+  [_open] () {
+    let fd
+    try {
+      fd = fs.openSync(this[_path], this[_flags], this[_mode])
+    } catch (er) {
+      if (this[_defaultFlag] &&
+          this[_flags] === 'r+' &&
+          er && er.code === 'ENOENT') {
+        this[_flags] = 'w'
+        return this[_open]()
+      } else
+        throw er
+    }
+    this[_onopen](null, fd)
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      try {
+        fs.closeSync(this[_fd])
+      } catch (er) {}
+      this[_fd] = null
+      this.emit('close')
+    }
+  }
+
+  [_write] (buf) {
+    try {
+      this[_onwrite](null,
+        fs.writeSync(this[_fd], buf, 0, buf.length, this[_pos]))
+    } catch (er) {
+      this[_onwrite](er, 0)
+    }
+  }
+}
+
+const writev = (fd, iovec, pos, cb) => {
+  const done = (er, bw) => cb(er, bw, iovec)
+  const req = new FSReqWrap()
+  req.oncomplete = done
+  binding.writeBuffers(fd, iovec, pos, req)
+}
+
+exports.ReadStream = ReadStream
+exports.ReadStreamSync = ReadStreamSync
+
+exports.WriteStream = WriteStream
+exports.WriteStreamSync = WriteStreamSync
diff --git a/node_modules/node-gyp/node_modules/fs-minipass/package.json b/node_modules/node-gyp/node_modules/fs-minipass/package.json
new file mode 100644
index 000000000..810dfab1c
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/fs-minipass/package.json
@@ -0,0 +1,65 @@
+{
+  "_from": "fs-minipass@^1.2.5",
+  "_id": "fs-minipass@1.2.7",
+  "_inBundle": false,
+  "_integrity": "sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==",
+  "_location": "/node-gyp/fs-minipass",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "fs-minipass@^1.2.5",
+    "name": "fs-minipass",
+    "escapedName": "fs-minipass",
+    "rawSpec": "^1.2.5",
+    "saveSpec": null,
+    "fetchSpec": "^1.2.5"
+  },
+  "_requiredBy": [
+    "/node-gyp/tar"
+  ],
+  "_resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.7.tgz",
+  "_shasum": "ccff8570841e7fe4265693da88936c55aed7f7c7",
+  "_spec": "fs-minipass@^1.2.5",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/node-gyp/node_modules/tar",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/npm/fs-minipass/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "minipass": "^2.6.0"
+  },
+  "deprecated": false,
+  "description": "fs read and write streams based on minipass",
+  "devDependencies": {
+    "mutate-fs": "^2.0.1",
+    "tap": "^14.6.4"
+  },
+  "files": [
+    "index.js"
+  ],
+  "homepage": "https://github.com/npm/fs-minipass#readme",
+  "keywords": [],
+  "license": "ISC",
+  "main": "index.js",
+  "name": "fs-minipass",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/fs-minipass.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --follow-tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap"
+  },
+  "tap": {
+    "check-coverage": true
+  },
+  "version": "1.2.7"
+}
diff --git a/node_modules/node-gyp/node_modules/minipass/LICENSE b/node_modules/node-gyp/node_modules/minipass/LICENSE
new file mode 100644
index 000000000..20a476254
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minipass/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) npm, Inc. and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/node-gyp/node_modules/minipass/README.md b/node_modules/node-gyp/node_modules/minipass/README.md
new file mode 100644
index 000000000..c989beea0
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minipass/README.md
@@ -0,0 +1,606 @@
+# minipass
+
+A _very_ minimal implementation of a [PassThrough
+stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough)
+
+[It's very
+fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0)
+for objects, strings, and buffers.
+
+Supports pipe()ing (including multi-pipe() and backpressure
+transmission), buffering data until either a `data` event handler or
+`pipe()` is added (so you don't lose the first chunk), and most other
+cases where PassThrough is a good idea.
+
+There is a `read()` method, but it's much more efficient to consume
+data from this stream via `'data'` events or by calling `pipe()` into
+some other stream.  Calling `read()` requires the buffer to be
+flattened in some cases, which requires copying memory.
+
+There is also no `unpipe()` method.  Once you start piping, there is
+no stopping it!
+
+If you set `objectMode: true` in the options, then whatever is written
+will be emitted.  Otherwise, it'll do a minimal amount of Buffer
+copying to ensure proper Streams semantics when `read(n)` is called.
+
+`objectMode` can also be set by doing `stream.objectMode = true`, or by
+writing any non-string/non-buffer data.  `objectMode` cannot be set to
+false once it is set.
+
+This is not a `through` or `through2` stream.  It doesn't transform
+the data, it just passes it right through.  If you want to transform
+the data, extend the class, and override the `write()` method.  Once
+you're done transforming the data however you want, call
+`super.write()` with the transform output.
+
+For some examples of streams that extend Minipass in various ways, check
+out:
+
+- [minizlib](http://npm.im/minizlib)
+- [fs-minipass](http://npm.im/fs-minipass)
+- [tar](http://npm.im/tar)
+- [minipass-collect](http://npm.im/minipass-collect)
+- [minipass-flush](http://npm.im/minipass-flush)
+- [minipass-pipeline](http://npm.im/minipass-pipeline)
+- [tap](http://npm.im/tap)
+- [tap-parser](http://npm.im/tap)
+- [treport](http://npm.im/tap)
+
+## Differences from Node.js Streams
+
+There are several things that make Minipass streams different from (and in
+some ways superior to) Node.js core streams.
+
+Please read these caveats if you are familiar with noode-core streams and
+intend to use Minipass streams in your programs.
+
+### Timing
+
+Minipass streams are designed to support synchronous use-cases.  Thus, data
+is emitted as soon as it is available, always.  It is buffered until read,
+but no longer.  Another way to look at it is that Minipass streams are
+exactly as synchronous as the logic that writes into them.
+
+This can be surprising if your code relies on `PassThrough.write()` always
+providing data on the next tick rather than the current one, or being able
+to call `resume()` and not have the entire buffer disappear immediately.
+
+However, without this synchronicity guarantee, there would be no way for
+Minipass to achieve the speeds it does, or support the synchronous use
+cases that it does.  Simply put, waiting takes time.
+
+This non-deferring approach makes Minipass streams much easier to reason
+about, especially in the context of Promises and other flow-control
+mechanisms.
+
+### No High/Low Water Marks
+
+Node.js core streams will optimistically fill up a buffer, returning `true`
+on all writes until the limit is hit, even if the data has nowhere to go.
+Then, they will not attempt to draw more data in until the buffer size dips
+below a minimum value.
+
+Minipass streams are much simpler.  The `write()` method will return `true`
+if the data has somewhere to go (which is to say, given the timing
+guarantees, that the data is already there by the time `write()` returns).
+
+If the data has nowhere to go, then `write()` returns false, and the data
+sits in a buffer, to be drained out immediately as soon as anyone consumes
+it.
+
+### Hazards of Buffering (or: Why Minipass Is So Fast)
+
+Since data written to a Minipass stream is immediately written all the way
+through the pipeline, and `write()` always returns true/false based on
+whether the data was fully flushed, backpressure is communicated
+immediately to the upstream caller.  This minimizes buffering.
+
+Consider this case:
+
+```js
+const {PassThrough} = require('stream')
+const p1 = new PassThrough({ highWaterMark: 1024 })
+const p2 = new PassThrough({ highWaterMark: 1024 })
+const p3 = new PassThrough({ highWaterMark: 1024 })
+const p4 = new PassThrough({ highWaterMark: 1024 })
+
+p1.pipe(p2).pipe(p3).pipe(p4)
+p4.on('data', () => console.log('made it through'))
+
+// this returns false and buffers, then writes to p2 on next tick (1)
+// p2 returns false and buffers, pausing p1, then writes to p3 on next tick (2)
+// p3 returns false and buffers, pausing p2, then writes to p4 on next tick (3)
+// p4 returns false and buffers, pausing p3, then emits 'data' and 'drain'
+// on next tick (4)
+// p3 sees p4's 'drain' event, and calls resume(), emitting 'resume' and
+// 'drain' on next tick (5)
+// p2 sees p3's 'drain', calls resume(), emits 'resume' and 'drain' on next tick (6)
+// p1 sees p2's 'drain', calls resume(), emits 'resume' and 'drain' on next
+// tick (7)
+
+p1.write(Buffer.alloc(2048)) // returns false
+```
+
+Along the way, the data was buffered and deferred at each stage, and
+multiple event deferrals happened, for an unblocked pipeline where it was
+perfectly safe to write all the way through!
+
+Furthermore, setting a `highWaterMark` of `1024` might lead someone reading
+the code to think an advisory maximum of 1KiB is being set for the
+pipeline.  However, the actual advisory buffering level is the _sum_ of
+`highWaterMark` values, since each one has its own bucket.
+
+Consider the Minipass case:
+
+```js
+const m1 = new Minipass()
+const m2 = new Minipass()
+const m3 = new Minipass()
+const m4 = new Minipass()
+
+m1.pipe(m2).pipe(m3).pipe(m4)
+m4.on('data', () => console.log('made it through'))
+
+// m1 is flowing, so it writes the data to m2 immediately
+// m2 is flowing, so it writes the data to m3 immediately
+// m3 is flowing, so it writes the data to m4 immediately
+// m4 is flowing, so it fires the 'data' event immediately, returns true
+// m4's write returned true, so m3 is still flowing, returns true
+// m3's write returned true, so m2 is still flowing, returns true
+// m2's write returned true, so m1 is still flowing, returns true
+// No event deferrals or buffering along the way!
+
+m1.write(Buffer.alloc(2048)) // returns true
+```
+
+It is extremely unlikely that you _don't_ want to buffer any data written,
+or _ever_ buffer data that can be flushed all the way through.  Neither
+node-core streams nor Minipass ever fail to buffer written data, but
+node-core streams do a lot of unnecessary buffering and pausing.
+
+As always, the faster implementation is the one that does less stuff and
+waits less time to do it.
+
+### Immediately emit `end` for empty streams (when not paused)
+
+If a stream is not paused, and `end()` is called before writing any data
+into it, then it will emit `end` immediately.
+
+If you have logic that occurs on the `end` event which you don't want to
+potentially happen immediately (for example, closing file descriptors,
+moving on to the next entry in an archive parse stream, etc.) then be sure
+to call `stream.pause()` on creation, and then `stream.resume()` once you
+are ready to respond to the `end` event.
+
+### Emit `end` When Asked
+
+One hazard of immediately emitting `'end'` is that you may not yet have had
+a chance to add a listener.  In order to avoid this hazard, Minipass
+streams safely re-emit the `'end'` event if a new listener is added after
+`'end'` has been emitted.
+
+Ie, if you do `stream.on('end', someFunction)`, and the stream has already
+emitted `end`, then it will call the handler right away.  (You can think of
+this somewhat like attaching a new `.then(fn)` to a previously-resolved
+Promise.)
+
+To prevent calling handlers multiple times who would not expect multiple
+ends to occur, all listeners are removed from the `'end'` event whenever it
+is emitted.
+
+### Impact of "immediate flow" on Tee-streams
+
+A "tee stream" is a stream piping to multiple destinations:
+
+```js
+const tee = new Minipass()
+t.pipe(dest1)
+t.pipe(dest2)
+t.write('foo') // goes to both destinations
+```
+
+Since Minipass streams _immediately_ process any pending data through the
+pipeline when a new pipe destination is added, this can have surprising
+effects, especially when a stream comes in from some other function and may
+or may not have data in its buffer.
+
+```js
+// WARNING! WILL LOSE DATA!
+const src = new Minipass()
+src.write('foo')
+src.pipe(dest1) // 'foo' chunk flows to dest1 immediately, and is gone
+src.pipe(dest2) // gets nothing!
+```
+
+The solution is to create a dedicated tee-stream junction that pipes to
+both locations, and then pipe to _that_ instead.
+
+```js
+// Safe example: tee to both places
+const src = new Minipass()
+src.write('foo')
+const tee = new Minipass()
+tee.pipe(dest1)
+tee.pipe(dest2)
+stream.pipe(tee) // tee gets 'foo', pipes to both locations
+```
+
+The same caveat applies to `on('data')` event listeners.  The first one
+added will _immediately_ receive all of the data, leaving nothing for the
+second:
+
+```js
+// WARNING! WILL LOSE DATA!
+const src = new Minipass()
+src.write('foo')
+src.on('data', handler1) // receives 'foo' right away
+src.on('data', handler2) // nothing to see here!
+```
+
+Using a dedicated tee-stream can be used in this case as well:
+
+```js
+// Safe example: tee to both data handlers
+const src = new Minipass()
+src.write('foo')
+const tee = new Minipass()
+tee.on('data', handler1)
+tee.on('data', handler2)
+src.pipe(tee)
+```
+
+## USAGE
+
+It's a stream!  Use it like a stream and it'll most likely do what you want.
+
+```js
+const Minipass = require('minipass')
+const mp = new Minipass(options) // optional: { encoding, objectMode }
+mp.write('foo')
+mp.pipe(someOtherStream)
+mp.end('bar')
+```
+
+### OPTIONS
+
+* `encoding` How would you like the data coming _out_ of the stream to be
+  encoded?  Accepts any values that can be passed to `Buffer.toString()`.
+* `objectMode` Emit data exactly as it comes in.  This will be flipped on
+  by default if you write() something other than a string or Buffer at any
+  point.  Setting `objectMode: true` will prevent setting any encoding
+  value.
+
+### API
+
+Implements the user-facing portions of Node.js's `Readable` and `Writable`
+streams.
+
+### Methods
+
+* `write(chunk, [encoding], [callback])` - Put data in.  (Note that, in the
+  base Minipass class, the same data will come out.)  Returns `false` if
+  the stream will buffer the next write, or true if it's still in
+  "flowing" mode.
+* `end([chunk, [encoding]], [callback])` - Signal that you have no more
+  data to write.  This will queue an `end` event to be fired when all the
+  data has been consumed.
+* `setEncoding(encoding)` - Set the encoding for data coming of the
+  stream.  This can only be done once.
+* `pause()` - No more data for a while, please.  This also prevents `end`
+  from being emitted for empty streams until the stream is resumed.
+* `resume()` - Resume the stream.  If there's data in the buffer, it is
+  all discarded.  Any buffered events are immediately emitted.
+* `pipe(dest)` - Send all output to the stream provided.  There is no way
+  to unpipe.  When data is emitted, it is immediately written to any and
+  all pipe destinations.
+* `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters.
+  Some events are given special treatment, however.  (See below under
+  "events".)
+* `promise()` - Returns a Promise that resolves when the stream emits
+  `end`, or rejects if the stream emits `error`.
+* `collect()` - Return a Promise that resolves on `end` with an array
+  containing each chunk of data that was emitted, or rejects if the
+  stream emits `error`.  Note that this consumes the stream data.
+* `concat()` - Same as `collect()`, but concatenates the data into a
+  single Buffer object.  Will reject the returned promise if the stream is
+  in objectMode, or if it goes into objectMode by the end of the data.
+* `read(n)` - Consume `n` bytes of data out of the buffer.  If `n` is not
+  provided, then consume all of it.  If `n` bytes are not available, then
+  it returns null.  **Note** consuming streams in this way is less
+  efficient, and can lead to unnecessary Buffer copying.
+* `destroy([er])` - Destroy the stream.  If an error is provided, then an
+  `'error'` event is emitted.  If the stream has a `close()` method, and
+  has not emitted a `'close'` event yet, then `stream.close()` will be
+  called.  Any Promises returned by `.promise()`, `.collect()` or
+  `.concat()` will be rejected.  After being destroyed, writing to the
+  stream will emit an error.  No more data will be emitted if the stream is
+  destroyed, even if it was previously buffered.
+
+### Properties
+
+* `bufferLength` Read-only.  Total number of bytes buffered, or in the case
+  of objectMode, the total number of objects.
+* `encoding` The encoding that has been set.  (Setting this is equivalent
+  to calling `setEncoding(enc)` and has the same prohibition against
+  setting multiple times.)
+* `flowing` Read-only.  Boolean indicating whether a chunk written to the
+  stream will be immediately emitted.
+* `emittedEnd` Read-only.  Boolean indicating whether the end-ish events
+  (ie, `end`, `prefinish`, `finish`) have been emitted.  Note that
+  listening on any end-ish event will immediateyl re-emit it if it has
+  already been emitted.
+* `writable` Whether the stream is writable.  Default `true`.  Set to
+  `false` when `end()`
+* `readable` Whether the stream is readable.  Default `true`.
+* `buffer` A [yallist](http://npm.im/yallist) linked list of chunks written
+  to the stream that have not yet been emitted.  (It's probably a bad idea
+  to mess with this.)
+* `pipes` A [yallist](http://npm.im/yallist) linked list of streams that
+  this stream is piping into.  (It's probably a bad idea to mess with
+  this.)
+* `destroyed` A getter that indicates whether the stream was destroyed.
+* `paused` True if the stream has been explicitly paused, otherwise false.
+* `objectMode` Indicates whether the stream is in `objectMode`.  Once set
+  to `true`, it cannot be set to `false`.
+
+### Events
+
+* `data` Emitted when there's data to read.  Argument is the data to read.
+  This is never emitted while not flowing.  If a listener is attached, that
+  will resume the stream.
+* `end` Emitted when there's no more data to read.  This will be emitted
+  immediately for empty streams when `end()` is called.  If a listener is
+  attached, and `end` was already emitted, then it will be emitted again.
+  All listeners are removed when `end` is emitted.
+* `prefinish` An end-ish event that follows the same logic as `end` and is
+  emitted in the same conditions where `end` is emitted.  Emitted after
+  `'end'`.
+* `finish` An end-ish event that follows the same logic as `end` and is
+  emitted in the same conditions where `end` is emitted.  Emitted after
+  `'prefinish'`.
+* `close` An indication that an underlying resource has been released.
+  Minipass does not emit this event, but will defer it until after `end`
+  has been emitted, since it throws off some stream libraries otherwise.
+* `drain` Emitted when the internal buffer empties, and it is again
+  suitable to `write()` into the stream.
+* `readable` Emitted when data is buffered and ready to be read by a
+  consumer.
+* `resume` Emitted when stream changes state from buffering to flowing
+  mode.  (Ie, when `resume` is called, `pipe` is called, or a `data` event
+  listener is added.)
+
+### Static Methods
+
+* `Minipass.isStream(stream)` Returns `true` if the argument is a stream,
+  and false otherwise.  To be considered a stream, the object must be
+  either an instance of Minipass, or an EventEmitter that has either a
+  `pipe()` method, or both `write()` and `end()` methods.  (Pretty much any
+  stream in node-land will return `true` for this.)
+
+## EXAMPLES
+
+Here are some examples of things you can do with Minipass streams.
+
+### simple "are you done yet" promise
+
+```js
+mp.promise().then(() => {
+  // stream is finished
+}, er => {
+  // stream emitted an error
+})
+```
+
+### collecting
+
+```js
+mp.collect().then(all => {
+  // all is an array of all the data emitted
+  // encoding is supported in this case, so
+  // so the result will be a collection of strings if
+  // an encoding is specified, or buffers/objects if not.
+  //
+  // In an async function, you may do
+  // const data = await stream.collect()
+})
+```
+
+### collecting into a single blob
+
+This is a bit slower because it concatenates the data into one chunk for
+you, but if you're going to do it yourself anyway, it's convenient this
+way:
+
+```js
+mp.concat().then(onebigchunk => {
+  // onebigchunk is a string if the stream
+  // had an encoding set, or a buffer otherwise.
+})
+```
+
+### iteration
+
+You can iterate over streams synchronously or asynchronously in
+platforms that support it.
+
+Synchronous iteration will end when the currently available data is
+consumed, even if the `end` event has not been reached.  In string and
+buffer mode, the data is concatenated, so unless multiple writes are
+occurring in the same tick as the `read()`, sync iteration loops will
+generally only have a single iteration.
+
+To consume chunks in this way exactly as they have been written, with
+no flattening, create the stream with the `{ objectMode: true }`
+option.
+
+```js
+const mp = new Minipass({ objectMode: true })
+mp.write('a')
+mp.write('b')
+for (let letter of mp) {
+  console.log(letter) // a, b
+}
+mp.write('c')
+mp.write('d')
+for (let letter of mp) {
+  console.log(letter) // c, d
+}
+mp.write('e')
+mp.end()
+for (let letter of mp) {
+  console.log(letter) // e
+}
+for (let letter of mp) {
+  console.log(letter) // nothing
+}
+```
+
+Asynchronous iteration will continue until the end event is reached,
+consuming all of the data.
+
+```js
+const mp = new Minipass({ encoding: 'utf8' })
+
+// some source of some data
+let i = 5
+const inter = setInterval(() => {
+  if (i --> 0)
+    mp.write(Buffer.from('foo\n', 'utf8'))
+  else {
+    mp.end()
+    clearInterval(inter)
+  }
+}, 100)
+
+// consume the data with asynchronous iteration
+async function consume () {
+  for await (let chunk of mp) {
+    console.log(chunk)
+  }
+  return 'ok'
+}
+
+consume().then(res => console.log(res))
+// logs `foo\n` 5 times, and then `ok`
+```
+
+### subclass that `console.log()`s everything written into it
+
+```js
+class Logger extends Minipass {
+  write (chunk, encoding, callback) {
+    console.log('WRITE', chunk, encoding)
+    return super.write(chunk, encoding, callback)
+  }
+  end (chunk, encoding, callback) {
+    console.log('END', chunk, encoding)
+    return super.end(chunk, encoding, callback)
+  }
+}
+
+someSource.pipe(new Logger()).pipe(someDest)
+```
+
+### same thing, but using an inline anonymous class
+
+```js
+// js classes are fun
+someSource
+  .pipe(new (class extends Minipass {
+    emit (ev, ...data) {
+      // let's also log events, because debugging some weird thing
+      console.log('EMIT', ev)
+      return super.emit(ev, ...data)
+    }
+    write (chunk, encoding, callback) {
+      console.log('WRITE', chunk, encoding)
+      return super.write(chunk, encoding, callback)
+    }
+    end (chunk, encoding, callback) {
+      console.log('END', chunk, encoding)
+      return super.end(chunk, encoding, callback)
+    }
+  }))
+  .pipe(someDest)
+```
+
+### subclass that defers 'end' for some reason
+
+```js
+class SlowEnd extends Minipass {
+  emit (ev, ...args) {
+    if (ev === 'end') {
+      console.log('going to end, hold on a sec')
+      setTimeout(() => {
+        console.log('ok, ready to end now')
+        super.emit('end', ...args)
+      }, 100)
+    } else {
+      return super.emit(ev, ...args)
+    }
+  }
+}
+```
+
+### transform that creates newline-delimited JSON
+
+```js
+class NDJSONEncode extends Minipass {
+  write (obj, cb) {
+    try {
+      // JSON.stringify can throw, emit an error on that
+      return super.write(JSON.stringify(obj) + '\n', 'utf8', cb)
+    } catch (er) {
+      this.emit('error', er)
+    }
+  }
+  end (obj, cb) {
+    if (typeof obj === 'function') {
+      cb = obj
+      obj = undefined
+    }
+    if (obj !== undefined) {
+      this.write(obj)
+    }
+    return super.end(cb)
+  }
+}
+```
+
+### transform that parses newline-delimited JSON
+
+```js
+class NDJSONDecode extends Minipass {
+  constructor (options) {
+    // always be in object mode, as far as Minipass is concerned
+    super({ objectMode: true })
+    this._jsonBuffer = ''
+  }
+  write (chunk, encoding, cb) {
+    if (typeof chunk === 'string' &&
+        typeof encoding === 'string' &&
+        encoding !== 'utf8') {
+      chunk = Buffer.from(chunk, encoding).toString()
+    } else if (Buffer.isBuffer(chunk))
+      chunk = chunk.toString()
+    }
+    if (typeof encoding === 'function') {
+      cb = encoding
+    }
+    const jsonData = (this._jsonBuffer + chunk).split('\n')
+    this._jsonBuffer = jsonData.pop()
+    for (let i = 0; i < jsonData.length; i++) {
+      let parsed
+      try {
+        super.write(parsed)
+      } catch (er) {
+        this.emit('error', er)
+        continue
+      }
+    }
+    if (cb)
+      cb()
+  }
+}
+```
diff --git a/node_modules/node-gyp/node_modules/minipass/index.js b/node_modules/node-gyp/node_modules/minipass/index.js
new file mode 100644
index 000000000..c072352d4
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minipass/index.js
@@ -0,0 +1,537 @@
+'use strict'
+const EE = require('events')
+const Yallist = require('yallist')
+const SD = require('string_decoder').StringDecoder
+
+const EOF = Symbol('EOF')
+const MAYBE_EMIT_END = Symbol('maybeEmitEnd')
+const EMITTED_END = Symbol('emittedEnd')
+const EMITTING_END = Symbol('emittingEnd')
+const CLOSED = Symbol('closed')
+const READ = Symbol('read')
+const FLUSH = Symbol('flush')
+const FLUSHCHUNK = Symbol('flushChunk')
+const ENCODING = Symbol('encoding')
+const DECODER = Symbol('decoder')
+const FLOWING = Symbol('flowing')
+const PAUSED = Symbol('paused')
+const RESUME = Symbol('resume')
+const BUFFERLENGTH = Symbol('bufferLength')
+const BUFFERPUSH = Symbol('bufferPush')
+const BUFFERSHIFT = Symbol('bufferShift')
+const OBJECTMODE = Symbol('objectMode')
+const DESTROYED = Symbol('destroyed')
+
+// TODO remove when Node v8 support drops
+const doIter = global._MP_NO_ITERATOR_SYMBOLS_  !== '1'
+const ASYNCITERATOR = doIter && Symbol.asyncIterator
+  || Symbol('asyncIterator not implemented')
+const ITERATOR = doIter && Symbol.iterator
+  || Symbol('iterator not implemented')
+
+// Buffer in node 4.x < 4.5.0 doesn't have working Buffer.from
+// or Buffer.alloc, and Buffer in node 10 deprecated the ctor.
+// .M, this is fine .\^/M..
+const B = Buffer.alloc ? Buffer
+  : /* istanbul ignore next */ require('safe-buffer').Buffer
+
+// events that mean 'the stream is over'
+// these are treated specially, and re-emitted
+// if they are listened for after emitting.
+const isEndish = ev =>
+  ev === 'end' ||
+  ev === 'finish' ||
+  ev === 'prefinish'
+
+const isArrayBuffer = b => b instanceof ArrayBuffer ||
+  typeof b === 'object' &&
+  b.constructor &&
+  b.constructor.name === 'ArrayBuffer' &&
+  b.byteLength >= 0
+
+const isArrayBufferView = b => !B.isBuffer(b) && ArrayBuffer.isView(b)
+
+module.exports = class Minipass extends EE {
+  constructor (options) {
+    super()
+    this[FLOWING] = false
+    // whether we're explicitly paused
+    this[PAUSED] = false
+    this.pipes = new Yallist()
+    this.buffer = new Yallist()
+    this[OBJECTMODE] = options && options.objectMode || false
+    if (this[OBJECTMODE])
+      this[ENCODING] = null
+    else
+      this[ENCODING] = options && options.encoding || null
+    if (this[ENCODING] === 'buffer')
+      this[ENCODING] = null
+    this[DECODER] = this[ENCODING] ? new SD(this[ENCODING]) : null
+    this[EOF] = false
+    this[EMITTED_END] = false
+    this[EMITTING_END] = false
+    this[CLOSED] = false
+    this.writable = true
+    this.readable = true
+    this[BUFFERLENGTH] = 0
+    this[DESTROYED] = false
+  }
+
+  get bufferLength () { return this[BUFFERLENGTH] }
+
+  get encoding () { return this[ENCODING] }
+  set encoding (enc) {
+    if (this[OBJECTMODE])
+      throw new Error('cannot set encoding in objectMode')
+
+    if (this[ENCODING] && enc !== this[ENCODING] &&
+        (this[DECODER] && this[DECODER].lastNeed || this[BUFFERLENGTH]))
+      throw new Error('cannot change encoding')
+
+    if (this[ENCODING] !== enc) {
+      this[DECODER] = enc ? new SD(enc) : null
+      if (this.buffer.length)
+        this.buffer = this.buffer.map(chunk => this[DECODER].write(chunk))
+    }
+
+    this[ENCODING] = enc
+  }
+
+  setEncoding (enc) {
+    this.encoding = enc
+  }
+
+  get objectMode () { return this[OBJECTMODE] }
+  set objectMode (ॐ ) { this[OBJECTMODE] = this[OBJECTMODE] || !!ॐ  }
+
+  write (chunk, encoding, cb) {
+    if (this[EOF])
+      throw new Error('write after end')
+
+    if (this[DESTROYED]) {
+      this.emit('error', Object.assign(
+        new Error('Cannot call write after a stream was destroyed'),
+        { code: 'ERR_STREAM_DESTROYED' }
+      ))
+      return true
+    }
+
+    if (typeof encoding === 'function')
+      cb = encoding, encoding = 'utf8'
+
+    if (!encoding)
+      encoding = 'utf8'
+
+    // convert array buffers and typed array views into buffers
+    // at some point in the future, we may want to do the opposite!
+    // leave strings and buffers as-is
+    // anything else switches us into object mode
+    if (!this[OBJECTMODE] && !B.isBuffer(chunk)) {
+      if (isArrayBufferView(chunk))
+        chunk = B.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)
+      else if (isArrayBuffer(chunk))
+        chunk = B.from(chunk)
+      else if (typeof chunk !== 'string')
+        // use the setter so we throw if we have encoding set
+        this.objectMode = true
+    }
+
+    // this ensures at this point that the chunk is a buffer or string
+    // don't buffer it up or send it to the decoder
+    if (!this.objectMode && !chunk.length) {
+      const ret = this.flowing
+      if (this[BUFFERLENGTH] !== 0)
+        this.emit('readable')
+      if (cb)
+        cb()
+      return ret
+    }
+
+    // fast-path writing strings of same encoding to a stream with
+    // an empty buffer, skipping the buffer/decoder dance
+    if (typeof chunk === 'string' && !this[OBJECTMODE] &&
+        // unless it is a string already ready for us to use
+        !(encoding === this[ENCODING] && !this[DECODER].lastNeed)) {
+      chunk = B.from(chunk, encoding)
+    }
+
+    if (B.isBuffer(chunk) && this[ENCODING])
+      chunk = this[DECODER].write(chunk)
+
+    try {
+      return this.flowing
+        ? (this.emit('data', chunk), this.flowing)
+        : (this[BUFFERPUSH](chunk), false)
+    } finally {
+      if (this[BUFFERLENGTH] !== 0)
+        this.emit('readable')
+      if (cb)
+        cb()
+    }
+  }
+
+  read (n) {
+    if (this[DESTROYED])
+      return null
+
+    try {
+      if (this[BUFFERLENGTH] === 0 || n === 0 || n > this[BUFFERLENGTH])
+        return null
+
+      if (this[OBJECTMODE])
+        n = null
+
+      if (this.buffer.length > 1 && !this[OBJECTMODE]) {
+        if (this.encoding)
+          this.buffer = new Yallist([
+            Array.from(this.buffer).join('')
+          ])
+        else
+          this.buffer = new Yallist([
+            B.concat(Array.from(this.buffer), this[BUFFERLENGTH])
+          ])
+      }
+
+      return this[READ](n || null, this.buffer.head.value)
+    } finally {
+      this[MAYBE_EMIT_END]()
+    }
+  }
+
+  [READ] (n, chunk) {
+    if (n === chunk.length || n === null)
+      this[BUFFERSHIFT]()
+    else {
+      this.buffer.head.value = chunk.slice(n)
+      chunk = chunk.slice(0, n)
+      this[BUFFERLENGTH] -= n
+    }
+
+    this.emit('data', chunk)
+
+    if (!this.buffer.length && !this[EOF])
+      this.emit('drain')
+
+    return chunk
+  }
+
+  end (chunk, encoding, cb) {
+    if (typeof chunk === 'function')
+      cb = chunk, chunk = null
+    if (typeof encoding === 'function')
+      cb = encoding, encoding = 'utf8'
+    if (chunk)
+      this.write(chunk, encoding)
+    if (cb)
+      this.once('end', cb)
+    this[EOF] = true
+    this.writable = false
+
+    // if we haven't written anything, then go ahead and emit,
+    // even if we're not reading.
+    // we'll re-emit if a new 'end' listener is added anyway.
+    // This makes MP more suitable to write-only use cases.
+    if (this.flowing || !this[PAUSED])
+      this[MAYBE_EMIT_END]()
+    return this
+  }
+
+  // don't let the internal resume be overwritten
+  [RESUME] () {
+    if (this[DESTROYED])
+      return
+
+    this[PAUSED] = false
+    this[FLOWING] = true
+    this.emit('resume')
+    if (this.buffer.length)
+      this[FLUSH]()
+    else if (this[EOF])
+      this[MAYBE_EMIT_END]()
+    else
+      this.emit('drain')
+  }
+
+  resume () {
+    return this[RESUME]()
+  }
+
+  pause () {
+    this[FLOWING] = false
+    this[PAUSED] = true
+  }
+
+  get destroyed () {
+    return this[DESTROYED]
+  }
+
+  get flowing () {
+    return this[FLOWING]
+  }
+
+  get paused () {
+    return this[PAUSED]
+  }
+
+  [BUFFERPUSH] (chunk) {
+    if (this[OBJECTMODE])
+      this[BUFFERLENGTH] += 1
+    else
+      this[BUFFERLENGTH] += chunk.length
+    return this.buffer.push(chunk)
+  }
+
+  [BUFFERSHIFT] () {
+    if (this.buffer.length) {
+      if (this[OBJECTMODE])
+        this[BUFFERLENGTH] -= 1
+      else
+        this[BUFFERLENGTH] -= this.buffer.head.value.length
+    }
+    return this.buffer.shift()
+  }
+
+  [FLUSH] () {
+    do {} while (this[FLUSHCHUNK](this[BUFFERSHIFT]()))
+
+    if (!this.buffer.length && !this[EOF])
+      this.emit('drain')
+  }
+
+  [FLUSHCHUNK] (chunk) {
+    return chunk ? (this.emit('data', chunk), this.flowing) : false
+  }
+
+  pipe (dest, opts) {
+    if (this[DESTROYED])
+      return
+
+    const ended = this[EMITTED_END]
+    opts = opts || {}
+    if (dest === process.stdout || dest === process.stderr)
+      opts.end = false
+    else
+      opts.end = opts.end !== false
+
+    const p = { dest: dest, opts: opts, ondrain: _ => this[RESUME]() }
+    this.pipes.push(p)
+
+    dest.on('drain', p.ondrain)
+    this[RESUME]()
+    // piping an ended stream ends immediately
+    if (ended && p.opts.end)
+      p.dest.end()
+    return dest
+  }
+
+  addListener (ev, fn) {
+    return this.on(ev, fn)
+  }
+
+  on (ev, fn) {
+    try {
+      return super.on(ev, fn)
+    } finally {
+      if (ev === 'data' && !this.pipes.length && !this.flowing)
+        this[RESUME]()
+      else if (isEndish(ev) && this[EMITTED_END]) {
+        super.emit(ev)
+        this.removeAllListeners(ev)
+      }
+    }
+  }
+
+  get emittedEnd () {
+    return this[EMITTED_END]
+  }
+
+  [MAYBE_EMIT_END] () {
+    if (!this[EMITTING_END] &&
+        !this[EMITTED_END] &&
+        !this[DESTROYED] &&
+        this.buffer.length === 0 &&
+        this[EOF]) {
+      this[EMITTING_END] = true
+      this.emit('end')
+      this.emit('prefinish')
+      this.emit('finish')
+      if (this[CLOSED])
+        this.emit('close')
+      this[EMITTING_END] = false
+    }
+  }
+
+  emit (ev, data) {
+    // error and close are only events allowed after calling destroy()
+    if (ev !== 'error' && ev !== 'close' && ev !== DESTROYED && this[DESTROYED])
+      return
+    else if (ev === 'data') {
+      if (!data)
+        return
+
+      if (this.pipes.length)
+        this.pipes.forEach(p =>
+          p.dest.write(data) === false && this.pause())
+    } else if (ev === 'end') {
+      // only actual end gets this treatment
+      if (this[EMITTED_END] === true)
+        return
+
+      this[EMITTED_END] = true
+      this.readable = false
+
+      if (this[DECODER]) {
+        data = this[DECODER].end()
+        if (data) {
+          this.pipes.forEach(p => p.dest.write(data))
+          super.emit('data', data)
+        }
+      }
+
+      this.pipes.forEach(p => {
+        p.dest.removeListener('drain', p.ondrain)
+        if (p.opts.end)
+          p.dest.end()
+      })
+    } else if (ev === 'close') {
+      this[CLOSED] = true
+      // don't emit close before 'end' and 'finish'
+      if (!this[EMITTED_END] && !this[DESTROYED])
+        return
+    }
+
+    // TODO: replace with a spread operator when Node v4 support drops
+    const args = new Array(arguments.length)
+    args[0] = ev
+    args[1] = data
+    if (arguments.length > 2) {
+      for (let i = 2; i < arguments.length; i++) {
+        args[i] = arguments[i]
+      }
+    }
+
+    try {
+      return super.emit.apply(this, args)
+    } finally {
+      if (!isEndish(ev))
+        this[MAYBE_EMIT_END]()
+      else
+        this.removeAllListeners(ev)
+    }
+  }
+
+  // const all = await stream.collect()
+  collect () {
+    const buf = []
+    buf.dataLength = 0
+    this.on('data', c => {
+      buf.push(c)
+      buf.dataLength += c.length
+    })
+    return this.promise().then(() => buf)
+  }
+
+  // const data = await stream.concat()
+  concat () {
+    return this[OBJECTMODE]
+      ? Promise.reject(new Error('cannot concat in objectMode'))
+      : this.collect().then(buf =>
+          this[OBJECTMODE]
+            ? Promise.reject(new Error('cannot concat in objectMode'))
+            : this[ENCODING] ? buf.join('') : B.concat(buf, buf.dataLength))
+  }
+
+  // stream.promise().then(() => done, er => emitted error)
+  promise () {
+    return new Promise((resolve, reject) => {
+      this.on(DESTROYED, () => reject(new Error('stream destroyed')))
+      this.on('end', () => resolve())
+      this.on('error', er => reject(er))
+    })
+  }
+
+  // for await (let chunk of stream)
+  [ASYNCITERATOR] () {
+    const next = () => {
+      const res = this.read()
+      if (res !== null)
+        return Promise.resolve({ done: false, value: res })
+
+      if (this[EOF])
+        return Promise.resolve({ done: true })
+
+      let resolve = null
+      let reject = null
+      const onerr = er => {
+        this.removeListener('data', ondata)
+        this.removeListener('end', onend)
+        reject(er)
+      }
+      const ondata = value => {
+        this.removeListener('error', onerr)
+        this.removeListener('end', onend)
+        this.pause()
+        resolve({ value: value, done: !!this[EOF] })
+      }
+      const onend = () => {
+        this.removeListener('error', onerr)
+        this.removeListener('data', ondata)
+        resolve({ done: true })
+      }
+      const ondestroy = () => onerr(new Error('stream destroyed'))
+      return new Promise((res, rej) => {
+        reject = rej
+        resolve = res
+        this.once(DESTROYED, ondestroy)
+        this.once('error', onerr)
+        this.once('end', onend)
+        this.once('data', ondata)
+      })
+    }
+
+    return { next }
+  }
+
+  // for (let chunk of stream)
+  [ITERATOR] () {
+    const next = () => {
+      const value = this.read()
+      const done = value === null
+      return { value, done }
+    }
+    return { next }
+  }
+
+  destroy (er) {
+    if (this[DESTROYED]) {
+      if (er)
+        this.emit('error', er)
+      else
+        this.emit(DESTROYED)
+      return this
+    }
+
+    this[DESTROYED] = true
+
+    // throw away all buffered data, it's never coming out
+    this.buffer = new Yallist()
+    this[BUFFERLENGTH] = 0
+
+    if (typeof this.close === 'function' && !this[CLOSED])
+      this.close()
+
+    if (er)
+      this.emit('error', er)
+    else // if no error to emit, still reject pending promises
+      this.emit(DESTROYED)
+
+    return this
+  }
+
+  static isStream (s) {
+    return !!s && (s instanceof Minipass || s instanceof EE && (
+      typeof s.pipe === 'function' || // readable
+      (typeof s.write === 'function' && typeof s.end === 'function') // writable
+    ))
+  }
+}
diff --git a/node_modules/node-gyp/node_modules/minipass/package.json b/node_modules/node-gyp/node_modules/minipass/package.json
new file mode 100644
index 000000000..c0c479817
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minipass/package.json
@@ -0,0 +1,72 @@
+{
+  "_from": "minipass@^2.8.6",
+  "_id": "minipass@2.9.0",
+  "_inBundle": false,
+  "_integrity": "sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==",
+  "_location": "/node-gyp/minipass",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "minipass@^2.8.6",
+    "name": "minipass",
+    "escapedName": "minipass",
+    "rawSpec": "^2.8.6",
+    "saveSpec": null,
+    "fetchSpec": "^2.8.6"
+  },
+  "_requiredBy": [
+    "/node-gyp/fs-minipass",
+    "/node-gyp/minizlib",
+    "/node-gyp/tar"
+  ],
+  "_resolved": "https://registry.npmjs.org/minipass/-/minipass-2.9.0.tgz",
+  "_shasum": "e713762e7d3e32fed803115cf93e04bca9fcc9a6",
+  "_spec": "minipass@^2.8.6",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/node-gyp/node_modules/tar",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/minipass/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "safe-buffer": "^5.1.2",
+    "yallist": "^3.0.0"
+  },
+  "deprecated": false,
+  "description": "minimal implementation of a PassThrough stream",
+  "devDependencies": {
+    "end-of-stream": "^1.4.0",
+    "tap": "^14.6.5",
+    "through2": "^2.0.3"
+  },
+  "files": [
+    "index.js"
+  ],
+  "homepage": "https://github.com/isaacs/minipass#readme",
+  "keywords": [
+    "passthrough",
+    "stream"
+  ],
+  "license": "ISC",
+  "main": "index.js",
+  "name": "minipass",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/minipass.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --follow-tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap"
+  },
+  "tap": {
+    "check-coverage": true
+  },
+  "version": "2.9.0"
+}
diff --git a/node_modules/node-gyp/node_modules/minizlib/LICENSE b/node_modules/node-gyp/node_modules/minizlib/LICENSE
new file mode 100644
index 000000000..ffce7383f
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minizlib/LICENSE
@@ -0,0 +1,26 @@
+Minizlib was created by Isaac Z. Schlueter.
+It is a derivative work of the Node.js project.
+
+"""
+Copyright Isaac Z. Schlueter and Contributors
+Copyright Node.js contributors. All rights reserved.
+Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+
+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/node_modules/node-gyp/node_modules/minizlib/README.md b/node_modules/node-gyp/node_modules/minizlib/README.md
new file mode 100644
index 000000000..4097b8522
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minizlib/README.md
@@ -0,0 +1,53 @@
+# minizlib
+
+A fast zlib stream built on [minipass](http://npm.im/minipass) and
+Node.js's zlib binding.
+
+This module was created to serve the needs of
+[node-tar](http://npm.im/tar) and
+[minipass-fetch](http://npm.im/minipass-fetch).
+
+Brotli is supported in versions of node with a Brotli binding.
+
+## How does this differ from the streams in `require('zlib')`?
+
+First, there are no convenience methods to compress or decompress a
+buffer.  If you want those, use the built-in `zlib` module.  This is
+only streams.  That being said, Minipass streams to make it fairly easy to
+use as one-liners: `new zlib.Deflate().end(data).read()` will return the
+deflate compressed result.
+
+This module compresses and decompresses the data as fast as you feed
+it in.  It is synchronous, and runs on the main process thread.  Zlib
+and Brotli operations can be high CPU, but they're very fast, and doing it
+this way means much less bookkeeping and artificial deferral.
+
+Node's built in zlib streams are built on top of `stream.Transform`.
+They do the maximally safe thing with respect to consistent
+asynchrony, buffering, and backpressure.
+
+See [Minipass](http://npm.im/minipass) for more on the differences between
+Node.js core streams and Minipass streams, and the convenience methods
+provided by that class.
+
+## Classes
+
+- Deflate
+- Inflate
+- Gzip
+- Gunzip
+- DeflateRaw
+- InflateRaw
+- Unzip
+- BrotliCompress (Node v10 and higher)
+- BrotliDecompress (Node v10 and higher)
+
+## USAGE
+
+```js
+const zlib = require('minizlib')
+const input = sourceOfCompressedData()
+const decode = new zlib.BrotliDecompress()
+const output = whereToWriteTheDecodedData()
+input.pipe(decode).pipe(output)
+```
diff --git a/node_modules/node-gyp/node_modules/minizlib/constants.js b/node_modules/node-gyp/node_modules/minizlib/constants.js
new file mode 100644
index 000000000..641ebc731
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minizlib/constants.js
@@ -0,0 +1,115 @@
+// Update with any zlib constants that are added or changed in the future.
+// Node v6 didn't export this, so we just hard code the version and rely
+// on all the other hard-coded values from zlib v4736.  When node v6
+// support drops, we can just export the realZlibConstants object.
+const realZlibConstants = require('zlib').constants ||
+  /* istanbul ignore next */ { ZLIB_VERNUM: 4736 }
+
+module.exports = Object.freeze(Object.assign(Object.create(null), {
+  Z_NO_FLUSH: 0,
+  Z_PARTIAL_FLUSH: 1,
+  Z_SYNC_FLUSH: 2,
+  Z_FULL_FLUSH: 3,
+  Z_FINISH: 4,
+  Z_BLOCK: 5,
+  Z_OK: 0,
+  Z_STREAM_END: 1,
+  Z_NEED_DICT: 2,
+  Z_ERRNO: -1,
+  Z_STREAM_ERROR: -2,
+  Z_DATA_ERROR: -3,
+  Z_MEM_ERROR: -4,
+  Z_BUF_ERROR: -5,
+  Z_VERSION_ERROR: -6,
+  Z_NO_COMPRESSION: 0,
+  Z_BEST_SPEED: 1,
+  Z_BEST_COMPRESSION: 9,
+  Z_DEFAULT_COMPRESSION: -1,
+  Z_FILTERED: 1,
+  Z_HUFFMAN_ONLY: 2,
+  Z_RLE: 3,
+  Z_FIXED: 4,
+  Z_DEFAULT_STRATEGY: 0,
+  DEFLATE: 1,
+  INFLATE: 2,
+  GZIP: 3,
+  GUNZIP: 4,
+  DEFLATERAW: 5,
+  INFLATERAW: 6,
+  UNZIP: 7,
+  BROTLI_DECODE: 8,
+  BROTLI_ENCODE: 9,
+  Z_MIN_WINDOWBITS: 8,
+  Z_MAX_WINDOWBITS: 15,
+  Z_DEFAULT_WINDOWBITS: 15,
+  Z_MIN_CHUNK: 64,
+  Z_MAX_CHUNK: Infinity,
+  Z_DEFAULT_CHUNK: 16384,
+  Z_MIN_MEMLEVEL: 1,
+  Z_MAX_MEMLEVEL: 9,
+  Z_DEFAULT_MEMLEVEL: 8,
+  Z_MIN_LEVEL: -1,
+  Z_MAX_LEVEL: 9,
+  Z_DEFAULT_LEVEL: -1,
+  BROTLI_OPERATION_PROCESS: 0,
+  BROTLI_OPERATION_FLUSH: 1,
+  BROTLI_OPERATION_FINISH: 2,
+  BROTLI_OPERATION_EMIT_METADATA: 3,
+  BROTLI_MODE_GENERIC: 0,
+  BROTLI_MODE_TEXT: 1,
+  BROTLI_MODE_FONT: 2,
+  BROTLI_DEFAULT_MODE: 0,
+  BROTLI_MIN_QUALITY: 0,
+  BROTLI_MAX_QUALITY: 11,
+  BROTLI_DEFAULT_QUALITY: 11,
+  BROTLI_MIN_WINDOW_BITS: 10,
+  BROTLI_MAX_WINDOW_BITS: 24,
+  BROTLI_LARGE_MAX_WINDOW_BITS: 30,
+  BROTLI_DEFAULT_WINDOW: 22,
+  BROTLI_MIN_INPUT_BLOCK_BITS: 16,
+  BROTLI_MAX_INPUT_BLOCK_BITS: 24,
+  BROTLI_PARAM_MODE: 0,
+  BROTLI_PARAM_QUALITY: 1,
+  BROTLI_PARAM_LGWIN: 2,
+  BROTLI_PARAM_LGBLOCK: 3,
+  BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING: 4,
+  BROTLI_PARAM_SIZE_HINT: 5,
+  BROTLI_PARAM_LARGE_WINDOW: 6,
+  BROTLI_PARAM_NPOSTFIX: 7,
+  BROTLI_PARAM_NDIRECT: 8,
+  BROTLI_DECODER_RESULT_ERROR: 0,
+  BROTLI_DECODER_RESULT_SUCCESS: 1,
+  BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT: 2,
+  BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT: 3,
+  BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION: 0,
+  BROTLI_DECODER_PARAM_LARGE_WINDOW: 1,
+  BROTLI_DECODER_NO_ERROR: 0,
+  BROTLI_DECODER_SUCCESS: 1,
+  BROTLI_DECODER_NEEDS_MORE_INPUT: 2,
+  BROTLI_DECODER_NEEDS_MORE_OUTPUT: 3,
+  BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE: -1,
+  BROTLI_DECODER_ERROR_FORMAT_RESERVED: -2,
+  BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE: -3,
+  BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET: -4,
+  BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME: -5,
+  BROTLI_DECODER_ERROR_FORMAT_CL_SPACE: -6,
+  BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE: -7,
+  BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT: -8,
+  BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1: -9,
+  BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2: -10,
+  BROTLI_DECODER_ERROR_FORMAT_TRANSFORM: -11,
+  BROTLI_DECODER_ERROR_FORMAT_DICTIONARY: -12,
+  BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS: -13,
+  BROTLI_DECODER_ERROR_FORMAT_PADDING_1: -14,
+  BROTLI_DECODER_ERROR_FORMAT_PADDING_2: -15,
+  BROTLI_DECODER_ERROR_FORMAT_DISTANCE: -16,
+  BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET: -19,
+  BROTLI_DECODER_ERROR_INVALID_ARGUMENTS: -20,
+  BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: -21,
+  BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS: -22,
+  BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP: -25,
+  BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1: -26,
+  BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2: -27,
+  BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES: -30,
+  BROTLI_DECODER_ERROR_UNREACHABLE: -31,
+}, realZlibConstants))
diff --git a/node_modules/node-gyp/node_modules/minizlib/index.js b/node_modules/node-gyp/node_modules/minizlib/index.js
new file mode 100644
index 000000000..295047b9c
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minizlib/index.js
@@ -0,0 +1,320 @@
+'use strict'
+
+const assert = require('assert')
+const Buffer = require('buffer').Buffer
+const realZlib = require('zlib')
+
+const constants = exports.constants = require('./constants.js')
+const Minipass = require('minipass')
+
+const OriginalBufferConcat = Buffer.concat
+
+class ZlibError extends Error {
+  constructor (err) {
+    super('zlib: ' + err.message)
+    this.code = err.code
+    this.errno = err.errno
+    /* istanbul ignore if */
+    if (!this.code)
+      this.code = 'ZLIB_ERROR'
+
+    this.message = 'zlib: ' + err.message
+    Error.captureStackTrace(this, this.constructor)
+  }
+
+  get name () {
+    return 'ZlibError'
+  }
+}
+
+// the Zlib class they all inherit from
+// This thing manages the queue of requests, and returns
+// true or false if there is anything in the queue when
+// you call the .write() method.
+const _opts = Symbol('opts')
+const _flushFlag = Symbol('flushFlag')
+const _finishFlushFlag = Symbol('finishFlushFlag')
+const _fullFlushFlag = Symbol('fullFlushFlag')
+const _handle = Symbol('handle')
+const _onError = Symbol('onError')
+const _sawError = Symbol('sawError')
+const _level = Symbol('level')
+const _strategy = Symbol('strategy')
+const _ended = Symbol('ended')
+const _defaultFullFlush = Symbol('_defaultFullFlush')
+
+class ZlibBase extends Minipass {
+  constructor (opts, mode) {
+    if (!opts || typeof opts !== 'object')
+      throw new TypeError('invalid options for ZlibBase constructor')
+
+    super(opts)
+    this[_ended] = false
+    this[_opts] = opts
+
+    this[_flushFlag] = opts.flush
+    this[_finishFlushFlag] = opts.finishFlush
+    // this will throw if any options are invalid for the class selected
+    try {
+      this[_handle] = new realZlib[mode](opts)
+    } catch (er) {
+      // make sure that all errors get decorated properly
+      throw new ZlibError(er)
+    }
+
+    this[_onError] = (err) => {
+      this[_sawError] = true
+      // there is no way to cleanly recover.
+      // continuing only obscures problems.
+      this.close()
+      this.emit('error', err)
+    }
+
+    this[_handle].on('error', er => this[_onError](new ZlibError(er)))
+    this.once('end', () => this.close)
+  }
+
+  close () {
+    if (this[_handle]) {
+      this[_handle].close()
+      this[_handle] = null
+      this.emit('close')
+    }
+  }
+
+  reset () {
+    if (!this[_sawError]) {
+      assert(this[_handle], 'zlib binding closed')
+      return this[_handle].reset()
+    }
+  }
+
+  flush (flushFlag) {
+    if (this.ended)
+      return
+
+    if (typeof flushFlag !== 'number')
+      flushFlag = this[_fullFlushFlag]
+    this.write(Object.assign(Buffer.alloc(0), { [_flushFlag]: flushFlag }))
+  }
+
+  end (chunk, encoding, cb) {
+    if (chunk)
+      this.write(chunk, encoding)
+    this.flush(this[_finishFlushFlag])
+    this[_ended] = true
+    return super.end(null, null, cb)
+  }
+
+  get ended () {
+    return this[_ended]
+  }
+
+  write (chunk, encoding, cb) {
+    // process the chunk using the sync process
+    // then super.write() all the outputted chunks
+    if (typeof encoding === 'function')
+      cb = encoding, encoding = 'utf8'
+
+    if (typeof chunk === 'string')
+      chunk = Buffer.from(chunk, encoding)
+
+    if (this[_sawError])
+      return
+    assert(this[_handle], 'zlib binding closed')
+
+    // _processChunk tries to .close() the native handle after it's done, so we
+    // intercept that by temporarily making it a no-op.
+    const nativeHandle = this[_handle]._handle
+    const originalNativeClose = nativeHandle.close
+    nativeHandle.close = () => {}
+    const originalClose = this[_handle].close
+    this[_handle].close = () => {}
+    // It also calls `Buffer.concat()` at the end, which may be convenient
+    // for some, but which we are not interested in as it slows us down.
+    Buffer.concat = (args) => args
+    let result
+    try {
+      const flushFlag = typeof chunk[_flushFlag] === 'number'
+        ? chunk[_flushFlag] : this[_flushFlag]
+      result = this[_handle]._processChunk(chunk, flushFlag)
+      // if we don't throw, reset it back how it was
+      Buffer.concat = OriginalBufferConcat
+    } catch (err) {
+      // or if we do, put Buffer.concat() back before we emit error
+      // Error events call into user code, which may call Buffer.concat()
+      Buffer.concat = OriginalBufferConcat
+      this[_onError](new ZlibError(err))
+    } finally {
+      if (this[_handle]) {
+        // Core zlib resets `_handle` to null after attempting to close the
+        // native handle. Our no-op handler prevented actual closure, but we
+        // need to restore the `._handle` property.
+        this[_handle]._handle = nativeHandle
+        nativeHandle.close = originalNativeClose
+        this[_handle].close = originalClose
+        // `_processChunk()` adds an 'error' listener. If we don't remove it
+        // after each call, these handlers start piling up.
+        this[_handle].removeAllListeners('error')
+      }
+    }
+
+    let writeReturn
+    if (result) {
+      if (Array.isArray(result) && result.length > 0) {
+        // The first buffer is always `handle._outBuffer`, which would be
+        // re-used for later invocations; so, we always have to copy that one.
+        writeReturn = super.write(Buffer.from(result[0]))
+        for (let i = 1; i < result.length; i++) {
+          writeReturn = super.write(result[i])
+        }
+      } else {
+        writeReturn = super.write(Buffer.from(result))
+      }
+    }
+
+    if (cb)
+      cb()
+    return writeReturn
+  }
+}
+
+class Zlib extends ZlibBase {
+  constructor (opts, mode) {
+    opts = opts || {}
+
+    opts.flush = opts.flush || constants.Z_NO_FLUSH
+    opts.finishFlush = opts.finishFlush || constants.Z_FINISH
+    super(opts, mode)
+
+    this[_fullFlushFlag] = constants.Z_FULL_FLUSH
+    this[_level] = opts.level
+    this[_strategy] = opts.strategy
+  }
+
+  params (level, strategy) {
+    if (this[_sawError])
+      return
+
+    if (!this[_handle])
+      throw new Error('cannot switch params when binding is closed')
+
+    // no way to test this without also not supporting params at all
+    /* istanbul ignore if */
+    if (!this[_handle].params)
+      throw new Error('not supported in this implementation')
+
+    if (this[_level] !== level || this[_strategy] !== strategy) {
+      this.flush(constants.Z_SYNC_FLUSH)
+      assert(this[_handle], 'zlib binding closed')
+      // .params() calls .flush(), but the latter is always async in the
+      // core zlib. We override .flush() temporarily to intercept that and
+      // flush synchronously.
+      const origFlush = this[_handle].flush
+      this[_handle].flush = (flushFlag, cb) => {
+        this.flush(flushFlag)
+        cb()
+      }
+      try {
+        this[_handle].params(level, strategy)
+      } finally {
+        this[_handle].flush = origFlush
+      }
+      /* istanbul ignore else */
+      if (this[_handle]) {
+        this[_level] = level
+        this[_strategy] = strategy
+      }
+    }
+  }
+}
+
+// minimal 2-byte header
+class Deflate extends Zlib {
+  constructor (opts) {
+    super(opts, 'Deflate')
+  }
+}
+
+class Inflate extends Zlib {
+  constructor (opts) {
+    super(opts, 'Inflate')
+  }
+}
+
+// gzip - bigger header, same deflate compression
+class Gzip extends Zlib {
+  constructor (opts) {
+    super(opts, 'Gzip')
+  }
+}
+
+class Gunzip extends Zlib {
+  constructor (opts) {
+    super(opts, 'Gunzip')
+  }
+}
+
+// raw - no header
+class DeflateRaw extends Zlib {
+  constructor (opts) {
+    super(opts, 'DeflateRaw')
+  }
+}
+
+class InflateRaw extends Zlib {
+  constructor (opts) {
+    super(opts, 'InflateRaw')
+  }
+}
+
+// auto-detect header.
+class Unzip extends Zlib {
+  constructor (opts) {
+    super(opts, 'Unzip')
+  }
+}
+
+class Brotli extends ZlibBase {
+  constructor (opts, mode) {
+    opts = opts || {}
+
+    opts.flush = opts.flush || constants.BROTLI_OPERATION_PROCESS
+    opts.finishFlush = opts.finishFlush || constants.BROTLI_OPERATION_FINISH
+
+    super(opts, mode)
+
+    this[_fullFlushFlag] = constants.BROTLI_OPERATION_FLUSH
+  }
+}
+
+class BrotliCompress extends Brotli {
+  constructor (opts) {
+    super(opts, 'BrotliCompress')
+  }
+}
+
+class BrotliDecompress extends Brotli {
+  constructor (opts) {
+    super(opts, 'BrotliDecompress')
+  }
+}
+
+exports.Deflate = Deflate
+exports.Inflate = Inflate
+exports.Gzip = Gzip
+exports.Gunzip = Gunzip
+exports.DeflateRaw = DeflateRaw
+exports.InflateRaw = InflateRaw
+exports.Unzip = Unzip
+/* istanbul ignore else */
+if (typeof realZlib.BrotliCompress === 'function') {
+  exports.BrotliCompress = BrotliCompress
+  exports.BrotliDecompress = BrotliDecompress
+} else {
+  exports.BrotliCompress = exports.BrotliDecompress = class {
+    constructor () {
+      throw new Error('Brotli is not supported in this version of Node.js')
+    }
+  }
+}
diff --git a/node_modules/node-gyp/node_modules/minizlib/package.json b/node_modules/node-gyp/node_modules/minizlib/package.json
new file mode 100644
index 000000000..cb750be92
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/minizlib/package.json
@@ -0,0 +1,71 @@
+{
+  "_from": "minizlib@^1.2.1",
+  "_id": "minizlib@1.3.3",
+  "_inBundle": false,
+  "_integrity": "sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==",
+  "_location": "/node-gyp/minizlib",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "minizlib@^1.2.1",
+    "name": "minizlib",
+    "escapedName": "minizlib",
+    "rawSpec": "^1.2.1",
+    "saveSpec": null,
+    "fetchSpec": "^1.2.1"
+  },
+  "_requiredBy": [
+    "/node-gyp/tar"
+  ],
+  "_resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.3.3.tgz",
+  "_shasum": "2290de96818a34c29551c8a8d301216bd65a861d",
+  "_spec": "minizlib@^1.2.1",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/node-gyp/node_modules/tar",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/minizlib/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "minipass": "^2.9.0"
+  },
+  "deprecated": false,
+  "description": "A small fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding.",
+  "devDependencies": {
+    "tap": "^12.0.1"
+  },
+  "files": [
+    "index.js",
+    "constants.js"
+  ],
+  "homepage": "https://github.com/isaacs/minizlib#readme",
+  "keywords": [
+    "zlib",
+    "gzip",
+    "gunzip",
+    "deflate",
+    "inflate",
+    "compression",
+    "zip",
+    "unzip"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "minizlib",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/minizlib.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --all; git push origin --tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap test/*.js --100 -J"
+  },
+  "version": "1.3.3"
+}
diff --git a/node_modules/node-gyp/node_modules/tar/LICENSE b/node_modules/node-gyp/node_modules/tar/LICENSE
new file mode 100644
index 000000000..19129e315
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/node-gyp/node_modules/tar/README.md b/node_modules/node-gyp/node_modules/tar/README.md
new file mode 100644
index 000000000..034e4865c
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/README.md
@@ -0,0 +1,954 @@
+# node-tar
+
+[![Build Status](https://travis-ci.org/npm/node-tar.svg?branch=master)](https://travis-ci.org/npm/node-tar)
+
+[Fast](./benchmarks) and full-featured Tar for Node.js
+
+The API is designed to mimic the behavior of `tar(1)` on unix systems.
+If you are familiar with how tar works, most of this will hopefully be
+straightforward for you.  If not, then hopefully this module can teach
+you useful unix skills that may come in handy someday :)
+
+## Background
+
+A "tar file" or "tarball" is an archive of file system entries
+(directories, files, links, etc.)  The name comes from "tape archive".
+If you run `man tar` on almost any Unix command line, you'll learn
+quite a bit about what it can do, and its history.
+
+Tar has 5 main top-level commands:
+
+* `c` Create an archive
+* `r` Replace entries within an archive
+* `u` Update entries within an archive (ie, replace if they're newer)
+* `t` List out the contents of an archive
+* `x` Extract an archive to disk
+
+The other flags and options modify how this top level function works.
+
+## High-Level API
+
+These 5 functions are the high-level API.  All of them have a
+single-character name (for unix nerds familiar with `tar(1)`) as well
+as a long name (for everyone else).
+
+All the high-level functions take the following arguments, all three
+of which are optional and may be omitted.
+
+1. `options` - An optional object specifying various options
+2. `paths` - An array of paths to add or extract
+3. `callback` - Called when the command is completed, if async.  (If
+   sync or no file specified, providing a callback throws a
+   `TypeError`.)
+
+If the command is sync (ie, if `options.sync=true`), then the
+callback is not allowed, since the action will be completed immediately.
+
+If a `file` argument is specified, and the command is async, then a
+`Promise` is returned.  In this case, if async, a callback may be
+provided which is called when the command is completed.
+
+If a `file` option is not specified, then a stream is returned.  For
+`create`, this is a readable stream of the generated archive.  For
+`list` and `extract` this is a writable stream that an archive should
+be written into.  If a file is not specified, then a callback is not
+allowed, because you're already getting a stream to work with.
+
+`replace` and `update` only work on existing archives, and so require
+a `file` argument.
+
+Sync commands without a file argument return a stream that acts on its
+input immediately in the same tick.  For readable streams, this means
+that all of the data is immediately available by calling
+`stream.read()`.  For writable streams, it will be acted upon as soon
+as it is provided, but this can be at any time.
+
+### Warnings
+
+Some things cause tar to emit a warning, but should usually not cause
+the entire operation to fail.  There are three ways to handle
+warnings:
+
+1. **Ignore them** (default) Invalid entries won't be put in the
+   archive, and invalid entries won't be unpacked.  This is usually
+   fine, but can hide failures that you might care about.
+2. **Notice them**  Add an `onwarn` function to the options, or listen
+   to the `'warn'` event on any tar stream.  The function will get
+   called as `onwarn(message, data)`.  Handle as appropriate.
+3. **Explode them.**  Set `strict: true` in the options object, and
+   `warn` messages will be emitted as `'error'` events instead.  If
+   there's no `error` handler, this causes the program to crash.  If
+   used with a promise-returning/callback-taking method, then it'll
+   send the error to the promise/callback.
+
+### Examples
+
+The API mimics the `tar(1)` command line functionality, with aliases
+for more human-readable option and function names.  The goal is that
+if you know how to use `tar(1)` in Unix, then you know how to use
+`require('tar')` in JavaScript.
+
+To replicate `tar czf my-tarball.tgz files and folders`, you'd do:
+
+```js
+tar.c(
+  {
+    gzip: <true|gzip options>,
+    file: 'my-tarball.tgz'
+  },
+  ['some', 'files', 'and', 'folders']
+).then(_ => { .. tarball has been created .. })
+```
+
+To replicate `tar cz files and folders > my-tarball.tgz`, you'd do:
+
+```js
+tar.c( // or tar.create
+  {
+    gzip: <true|gzip options>
+  },
+  ['some', 'files', 'and', 'folders']
+).pipe(fs.createWriteStream('my-tarball.tgz'))
+```
+
+To replicate `tar xf my-tarball.tgz` you'd do:
+
+```js
+tar.x(  // or tar.extract(
+  {
+    file: 'my-tarball.tgz'
+  }
+).then(_=> { .. tarball has been dumped in cwd .. })
+```
+
+To replicate `cat my-tarball.tgz | tar x -C some-dir --strip=1`:
+
+```js
+fs.createReadStream('my-tarball.tgz').pipe(
+  tar.x({
+    strip: 1,
+    C: 'some-dir' // alias for cwd:'some-dir', also ok
+  })
+)
+```
+
+To replicate `tar tf my-tarball.tgz`, do this:
+
+```js
+tar.t({
+  file: 'my-tarball.tgz',
+  onentry: entry => { .. do whatever with it .. }
+})
+```
+
+To replicate `cat my-tarball.tgz | tar t` do:
+
+```js
+fs.createReadStream('my-tarball.tgz')
+  .pipe(tar.t())
+  .on('entry', entry => { .. do whatever with it .. })
+```
+
+To do anything synchronous, add `sync: true` to the options.  Note
+that sync functions don't take a callback and don't return a promise.
+When the function returns, it's already done.  Sync methods without a
+file argument return a sync stream, which flushes immediately.  But,
+of course, it still won't be done until you `.end()` it.
+
+To filter entries, add `filter: <function>` to the options.
+Tar-creating methods call the filter with `filter(path, stat)`.
+Tar-reading methods (including extraction) call the filter with
+`filter(path, entry)`.  The filter is called in the `this`-context of
+the `Pack` or `Unpack` stream object.
+
+The arguments list to `tar t` and `tar x` specify a list of filenames
+to extract or list, so they're equivalent to a filter that tests if
+the file is in the list.
+
+For those who _aren't_ fans of tar's single-character command names:
+
+```
+tar.c === tar.create
+tar.r === tar.replace (appends to archive, file is required)
+tar.u === tar.update (appends if newer, file is required)
+tar.x === tar.extract
+tar.t === tar.list
+```
+
+Keep reading for all the command descriptions and options, as well as
+the low-level API that they are built on.
+
+### tar.c(options, fileList, callback) [alias: tar.create]
+
+Create a tarball archive.
+
+The `fileList` is an array of paths to add to the tarball.  Adding a
+directory also adds its children recursively.
+
+An entry in `fileList` that starts with an `@` symbol is a tar archive
+whose entries will be added.  To add a file that starts with `@`,
+prepend it with `./`.
+
+The following options are supported:
+
+- `file` Write the tarball archive to the specified filename.  If this
+  is specified, then the callback will be fired when the file has been
+  written, and a promise will be returned that resolves when the file
+  is written.  If a filename is not specified, then a Readable Stream
+  will be returned which will emit the file data. [Alias: `f`]
+- `sync` Act synchronously.  If this is set, then any provided file
+  will be fully written after the call to `tar.c`.  If this is set,
+  and a file is not provided, then the resulting stream will already
+  have the data ready to `read` or `emit('data')` as soon as you
+  request it.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.  [Alias: `C`]
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()` [Alias: `z`]
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths. [Alias: `P`]
+- `mode` The mode to set on the created file archive
+- `noDirRecurse` Do not recursively archive the contents of
+  directories. [Alias: `n`]
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such. [Alias: `L`, `h`]
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+  [Alias: `m`, `no-mtime`]
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+
+The following options are mostly internal, but can be modified in some
+advanced use cases, such as re-using caches between runs.
+
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `readdirCache` A Map object that caches calls to `readdir`.
+- `jobs` A number specifying how many concurrent jobs to run.
+  Defaults to 4.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+
+### tar.x(options, fileList, callback) [alias: tar.extract]
+
+Extract a tarball archive.
+
+The `fileList` is an array of paths to extract from the tarball.  If
+no paths are provided, then all the entries are extracted.
+
+If the archive is gzipped, then tar will detect this and unzip it.
+
+Note that all directories that are created will be forced to be
+writable, readable, and listable by their owner, to avoid cases where
+a directory prevents extraction of child entries by virtue of its
+mode.
+
+Most extraction errors will cause a `warn` event to be emitted.  If
+the `cwd` is missing, or not a directory, then the extraction will
+fail completely.
+
+The following options are supported:
+
+- `cwd` Extract files relative to the specified directory.  Defaults
+  to `process.cwd()`.  If provided, this must exist and must be a
+  directory. [Alias: `C`]
+- `file` The archive file to extract.  If not specified, then a
+  Writable stream is returned where the archive data should be
+  written. [Alias: `f`]
+- `sync` Create files and directories synchronously.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being unpacked.  Return `true` to unpack the entry from the
+  archive, or `false` to skip it.
+- `newer` Set to true to keep the existing file on disk if it's newer
+  than the file in the archive. [Alias: `keep-newer`,
+  `keep-newer-files`]
+- `keep` Do not overwrite existing files.  In particular, if a file
+  appears more than once in an archive, later copies will not
+  overwrite earlier copies. [Alias: `k`, `keep-existing`]
+- `preservePaths` Allow absolute paths, paths containing `..`, and
+  extracting through symbolic links.  By default, `/` is stripped from
+  absolute paths, `..` paths are not extracted, and any file whose
+  location would be modified by a symbolic link is not extracted.
+  [Alias: `P`]
+- `unlink` Unlink files before creating them.  Without this option,
+  tar overwrites existing files, which preserves existing hardlinks.
+  With this option, existing hardlinks will be broken, as will any
+  symlink that would affect the location of an extracted file. [Alias:
+  `U`]
+- `strip` Remove the specified number of leading path elements.
+  Pathnames with fewer elements will be silently skipped.  Note that
+  the pathname is edited after applying the filter, but before
+  security checks. [Alias: `strip-components`, `stripComponents`]
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `preserveOwner` If true, tar will set the `uid` and `gid` of
+  extracted entries to the `uid` and `gid` fields in the archive.
+  This defaults to true when run as root, and false otherwise.  If
+  false, then files and directories will be set with the owner and
+  group of the user running the process.  This is similar to `-p` in
+  `tar(1)`, but ACLs and other system-specific data is never unpacked
+  in this implementation, and modes are set by default already.
+  [Alias: `p`]
+- `uid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified user id, regardless of the `uid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `gid` option.
+- `gid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified group id, regardless of the `gid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `uid` option.
+- `noMtime` Set to true to omit writing `mtime` value for extracted
+  entries. [Alias: `m`, `no-mtime`]
+- `transform` Provide a function that takes an `entry` object, and
+  returns a stream, or any falsey value.  If a stream is provided,
+  then that stream's data will be written instead of the contents of
+  the archive entry.  If a falsey value is provided, then the entry is
+  written to disk as normal.  (To exclude items from extraction, use
+  the `filter` option described above.)
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.
+
+The following options are mostly internal, but can be modified in some
+advanced use cases, such as re-using caches between runs.
+
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `umask` Filter the modes of entries like `process.umask()`.
+- `dmode` Default mode for directories
+- `fmode` Default mode for files
+- `dirCache` A Map object of which directories exist.
+- `maxMetaEntrySize` The maximum size of meta entries that is
+  supported.  Defaults to 1 MB.
+
+Note that using an asynchronous stream type with the `transform`
+option will cause undefined behavior in sync extractions.
+[MiniPass](http://npm.im/minipass)-based streams are designed for this
+use case.
+
+### tar.t(options, fileList, callback) [alias: tar.list]
+
+List the contents of a tarball archive.
+
+The `fileList` is an array of paths to list from the tarball.  If
+no paths are provided, then all the entries are listed.
+
+If the archive is gzipped, then tar will detect this and unzip it.
+
+Returns an event emitter that emits `entry` events with
+`tar.ReadEntry` objects.  However, they don't emit `'data'` or `'end'`
+events.  (If you want to get actual readable entries, use the
+`tar.Parse` class instead.)
+
+The following options are supported:
+
+- `cwd` Extract files relative to the specified directory.  Defaults
+  to `process.cwd()`. [Alias: `C`]
+- `file` The archive file to list.  If not specified, then a
+  Writable stream is returned where the archive data should be
+  written. [Alias: `f`]
+- `sync` Read the specified file synchronously.  (This has no effect
+  when a file option isn't specified, because entries are emitted as
+  fast as they are parsed from the stream anyway.)
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being listed.  Return `true` to emit the entry from the
+  archive, or `false` to skip it.
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.  This is important for when both `file` and
+  `sync` are set, because it will be called synchronously.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noResume` By default, `entry` streams are resumed immediately after
+  the call to `onentry`.  Set `noResume: true` to suppress this
+  behavior.  Note that by opting into this, the stream will never
+  complete until the entry data is consumed.
+
+### tar.u(options, fileList, callback) [alias: tar.update]
+
+Add files to an archive if they are newer than the entry already in
+the tarball archive.
+
+The `fileList` is an array of paths to add to the tarball.  Adding a
+directory also adds its children recursively.
+
+An entry in `fileList` that starts with an `@` symbol is a tar archive
+whose entries will be added.  To add a file that starts with `@`,
+prepend it with `./`.
+
+The following options are supported:
+
+- `file` Required. Write the tarball archive to the specified
+  filename. [Alias: `f`]
+- `sync` Act synchronously.  If this is set, then any provided file
+  will be fully written after the call to `tar.c`.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for adding entries to the
+  archive.  Defaults to `process.cwd()`.  [Alias: `C`]
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()` [Alias: `z`]
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths. [Alias: `P`]
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noDirRecurse` Do not recursively archive the contents of
+  directories. [Alias: `n`]
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such. [Alias: `L`, `h`]
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+  [Alias: `m`, `no-mtime`]
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+### tar.r(options, fileList, callback) [alias: tar.replace]
+
+Add files to an existing archive.  Because later entries override
+earlier entries, this effectively replaces any existing entries.
+
+The `fileList` is an array of paths to add to the tarball.  Adding a
+directory also adds its children recursively.
+
+An entry in `fileList` that starts with an `@` symbol is a tar archive
+whose entries will be added.  To add a file that starts with `@`,
+prepend it with `./`.
+
+The following options are supported:
+
+- `file` Required. Write the tarball archive to the specified
+  filename. [Alias: `f`]
+- `sync` Act synchronously.  If this is set, then any provided file
+  will be fully written after the call to `tar.c`.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for adding entries to the
+  archive.  Defaults to `process.cwd()`.  [Alias: `C`]
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()` [Alias: `z`]
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths. [Alias: `P`]
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noDirRecurse` Do not recursively archive the contents of
+  directories. [Alias: `n`]
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such. [Alias: `L`, `h`]
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+  [Alias: `m`, `no-mtime`]
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+
+## Low-Level API
+
+### class tar.Pack
+
+A readable tar stream.
+
+Has all the standard readable stream interface stuff.  `'data'` and
+`'end'` events, `read()` method, `pause()` and `resume()`, etc.
+
+#### constructor(options)
+
+The following options are supported:
+
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()`
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `readdirCache` A Map object that caches calls to `readdir`.
+- `jobs` A number specifying how many concurrent jobs to run.
+  Defaults to 4.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noDirRecurse` Do not recursively archive the contents of
+  directories.
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such.
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+#### add(path)
+
+Adds an entry to the archive.  Returns the Pack stream.
+
+#### write(path)
+
+Adds an entry to the archive.  Returns true if flushed.
+
+#### end()
+
+Finishes the archive.
+
+### class tar.Pack.Sync
+
+Synchronous version of `tar.Pack`.
+
+### class tar.Unpack
+
+A writable stream that unpacks a tar archive onto the file system.
+
+All the normal writable stream stuff is supported.  `write()` and
+`end()` methods, `'drain'` events, etc.
+
+Note that all directories that are created will be forced to be
+writable, readable, and listable by their owner, to avoid cases where
+a directory prevents extraction of child entries by virtue of its
+mode.
+
+`'close'` is emitted when it's done writing stuff to the file system.
+
+Most unpack errors will cause a `warn` event to be emitted.  If the
+`cwd` is missing, or not a directory, then an error will be emitted.
+
+#### constructor(options)
+
+- `cwd` Extract files relative to the specified directory.  Defaults
+  to `process.cwd()`.  If provided, this must exist and must be a
+  directory.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being unpacked.  Return `true` to unpack the entry from the
+  archive, or `false` to skip it.
+- `newer` Set to true to keep the existing file on disk if it's newer
+  than the file in the archive.
+- `keep` Do not overwrite existing files.  In particular, if a file
+  appears more than once in an archive, later copies will not
+  overwrite earlier copies.
+- `preservePaths` Allow absolute paths, paths containing `..`, and
+  extracting through symbolic links.  By default, `/` is stripped from
+  absolute paths, `..` paths are not extracted, and any file whose
+  location would be modified by a symbolic link is not extracted.
+- `unlink` Unlink files before creating them.  Without this option,
+  tar overwrites existing files, which preserves existing hardlinks.
+  With this option, existing hardlinks will be broken, as will any
+  symlink that would affect the location of an extracted file.
+- `strip` Remove the specified number of leading path elements.
+  Pathnames with fewer elements will be silently skipped.  Note that
+  the pathname is edited after applying the filter, but before
+  security checks.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `umask` Filter the modes of entries like `process.umask()`.
+- `dmode` Default mode for directories
+- `fmode` Default mode for files
+- `dirCache` A Map object of which directories exist.
+- `maxMetaEntrySize` The maximum size of meta entries that is
+  supported.  Defaults to 1 MB.
+- `preserveOwner` If true, tar will set the `uid` and `gid` of
+  extracted entries to the `uid` and `gid` fields in the archive.
+  This defaults to true when run as root, and false otherwise.  If
+  false, then files and directories will be set with the owner and
+  group of the user running the process.  This is similar to `-p` in
+  `tar(1)`, but ACLs and other system-specific data is never unpacked
+  in this implementation, and modes are set by default already.
+- `win32` True if on a windows platform.  Causes behavior where
+  filenames containing `<|>?` chars are converted to
+  windows-compatible values while being unpacked.
+- `uid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified user id, regardless of the `uid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `gid` option.
+- `gid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified group id, regardless of the `gid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `uid` option.
+- `noMtime` Set to true to omit writing `mtime` value for extracted
+  entries.
+- `transform` Provide a function that takes an `entry` object, and
+  returns a stream, or any falsey value.  If a stream is provided,
+  then that stream's data will be written instead of the contents of
+  the archive entry.  If a falsey value is provided, then the entry is
+  written to disk as normal.  (To exclude items from extraction, use
+  the `filter` option described above.)
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+
+### class tar.Unpack.Sync
+
+Synchronous version of `tar.Unpack`.
+
+Note that using an asynchronous stream type with the `transform`
+option will cause undefined behavior in sync unpack streams.
+[MiniPass](http://npm.im/minipass)-based streams are designed for this
+use case.
+
+### class tar.Parse
+
+A writable stream that parses a tar archive stream.  All the standard
+writable stream stuff is supported.
+
+If the archive is gzipped, then tar will detect this and unzip it.
+
+Emits `'entry'` events with `tar.ReadEntry` objects, which are
+themselves readable streams that you can pipe wherever.
+
+Each `entry` will not emit until the one before it is flushed through,
+so make sure to either consume the data (with `on('data', ...)` or
+`.pipe(...)`) or throw it away with `.resume()` to keep the stream
+flowing.
+
+#### constructor(options)
+
+Returns an event emitter that emits `entry` events with
+`tar.ReadEntry` objects.
+
+The following options are supported:
+
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being listed.  Return `true` to emit the entry from the
+  archive, or `false` to skip it.
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+
+#### abort(message, error)
+
+Stop all parsing activities.  This is called when there are zlib
+errors.  It also emits a warning with the message and error provided.
+
+### class tar.ReadEntry extends [MiniPass](http://npm.im/minipass)
+
+A representation of an entry that is being read out of a tar archive.
+
+It has the following fields:
+
+- `extended` The extended metadata object provided to the constructor.
+- `globalExtended` The global extended metadata object provided to the
+  constructor.
+- `remain` The number of bytes remaining to be written into the
+  stream.
+- `blockRemain` The number of 512-byte blocks remaining to be written
+  into the stream.
+- `ignore` Whether this entry should be ignored.
+- `meta` True if this represents metadata about the next entry, false
+  if it represents a filesystem object.
+- All the fields from the header, extended header, and global extended
+  header are added to the ReadEntry object.  So it has `path`, `type`,
+  `size, `mode`, and so on.
+
+#### constructor(header, extended, globalExtended)
+
+Create a new ReadEntry object with the specified header, extended
+header, and global extended header values.
+
+### class tar.WriteEntry extends [MiniPass](http://npm.im/minipass)
+
+A representation of an entry that is being written from the file
+system into a tar archive.
+
+Emits data for the Header, and for the Pax Extended Header if one is
+required, as well as any body data.
+
+Creating a WriteEntry for a directory does not also create
+WriteEntry objects for all of the directory contents.
+
+It has the following fields:
+
+- `path` The path field that will be written to the archive.  By
+  default, this is also the path from the cwd to the file system
+  object.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `myuid` If supported, the uid of the user running the current
+  process.
+- `myuser` The `env.USER` string if set, or `''`.  Set as the entry
+  `uname` field if the file's `uid` matches `this.myuid`.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 1 MB.
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.
+- `absolute` The absolute path to the entry on the filesystem.  By
+  default, this is `path.resolve(this.cwd, this.path)`, but it can be
+  overridden explicitly.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `win32` True if on a windows platform.  Causes behavior where paths
+  replace `\` with `/` and filenames containing the windows-compatible
+  forms of `<|>?:` characters are converted to actual `<|>?:` characters
+  in the archive.
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+
+
+#### constructor(path, options)
+
+`path` is the path of the entry as it is written in the archive.
+
+The following options are supported:
+
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 1 MB.
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.
+- `absolute` The absolute path to the entry on the filesystem.  By
+  default, this is `path.resolve(this.cwd, this.path)`, but it can be
+  overridden explicitly.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `win32` True if on a windows platform.  Causes behavior where paths
+  replace `\` with `/`.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+- `umask` Set to restrict the modes on the entries in the archive,
+  somewhat like how umask works on file creation.  Defaults to
+  `process.umask()` on unix systems, or `0o22` on Windows.
+
+#### warn(message, data)
+
+If strict, emit an error with the provided message.
+
+Othewise, emit a `'warn'` event with the provided message and data.
+
+### class tar.WriteEntry.Sync
+
+Synchronous version of tar.WriteEntry
+
+### class tar.WriteEntry.Tar
+
+A version of tar.WriteEntry that gets its data from a tar.ReadEntry
+instead of from the filesystem.
+
+#### constructor(readEntry, options)
+
+`readEntry` is the entry being read out of another archive.
+
+The following options are supported:
+
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+
+### class tar.Header
+
+A class for reading and writing header blocks.
+
+It has the following fields:
+
+- `nullBlock` True if decoding a block which is entirely composed of
+  `0x00` null bytes.  (Useful because tar files are terminated by
+  at least 2 null blocks.)
+- `cksumValid` True if the checksum in the header is valid, false
+  otherwise.
+- `needPax` True if the values, as encoded, will require a Pax
+  extended header.
+- `path` The path of the entry.
+- `mode` The 4 lowest-order octal digits of the file mode.  That is,
+  read/write/execute permissions for world, group, and owner, and the
+  setuid, setgid, and sticky bits.
+- `uid` Numeric user id of the file owner
+- `gid` Numeric group id of the file owner
+- `size` Size of the file in bytes
+- `mtime` Modified time of the file
+- `cksum` The checksum of the header.  This is generated by adding all
+  the bytes of the header block, treating the checksum field itself as
+  all ascii space characters (that is, `0x20`).
+- `type` The human-readable name of the type of entry this represents,
+  or the alphanumeric key if unknown.
+- `typeKey` The alphanumeric key for the type of entry this header
+  represents.
+- `linkpath` The target of Link and SymbolicLink entries.
+- `uname` Human-readable user name of the file owner
+- `gname` Human-readable group name of the file owner
+- `devmaj` The major portion of the device number.  Always `0` for
+  files, directories, and links.
+- `devmin` The minor portion of the device number.  Always `0` for
+  files, directories, and links.
+- `atime` File access time.
+- `ctime` File change time.
+
+#### constructor(data, [offset=0])
+
+`data` is optional.  It is either a Buffer that should be interpreted
+as a tar Header starting at the specified offset and continuing for
+512 bytes, or a data object of keys and values to set on the header
+object, and eventually encode as a tar Header.
+
+#### decode(block, offset)
+
+Decode the provided buffer starting at the specified offset.
+
+Buffer length must be greater than 512 bytes.
+
+#### set(data)
+
+Set the fields in the data object.
+
+#### encode(buffer, offset)
+
+Encode the header fields into the buffer at the specified offset.
+
+Returns `this.needPax` to indicate whether a Pax Extended Header is
+required to properly encode the specified data.
+
+### class tar.Pax
+
+An object representing a set of key-value pairs in an Pax extended
+header entry.
+
+It has the following fields.  Where the same name is used, they have
+the same semantics as the tar.Header field of the same name.
+
+- `global` True if this represents a global extended header, or false
+  if it is for a single entry.
+- `atime`
+- `charset`
+- `comment`
+- `ctime`
+- `gid`
+- `gname`
+- `linkpath`
+- `mtime`
+- `path`
+- `size`
+- `uid`
+- `uname`
+- `dev`
+- `ino`
+- `nlink`
+
+#### constructor(object, global)
+
+Set the fields set in the object.  `global` is a boolean that defaults
+to false.
+
+#### encode()
+
+Return a Buffer containing the header and body for the Pax extended
+header entry, or `null` if there is nothing to encode.
+
+#### encodeBody()
+
+Return a string representing the body of the pax extended header
+entry.
+
+#### encodeField(fieldName)
+
+Return a string representing the key/value encoding for the specified
+fieldName, or `''` if the field is unset.
+
+### tar.Pax.parse(string, extended, global)
+
+Return a new Pax object created by parsing the contents of the string
+provided.
+
+If the `extended` object is set, then also add the fields from that
+object.  (This is necessary because multiple metadata entries can
+occur in sequence.)
+
+### tar.types
+
+A translation table for the `type` field in tar headers.
+
+#### tar.types.name.get(code)
+
+Get the human-readable name for a given alphanumeric code.
+
+#### tar.types.code.get(name)
+
+Get the alphanumeric code for a given human-readable name.
diff --git a/node_modules/node-gyp/node_modules/tar/index.js b/node_modules/node-gyp/node_modules/tar/index.js
new file mode 100644
index 000000000..c9ae06e79
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/index.js
@@ -0,0 +1,18 @@
+'use strict'
+
+// high-level commands
+exports.c = exports.create = require('./lib/create.js')
+exports.r = exports.replace = require('./lib/replace.js')
+exports.t = exports.list = require('./lib/list.js')
+exports.u = exports.update = require('./lib/update.js')
+exports.x = exports.extract = require('./lib/extract.js')
+
+// classes
+exports.Pack = require('./lib/pack.js')
+exports.Unpack = require('./lib/unpack.js')
+exports.Parse = require('./lib/parse.js')
+exports.ReadEntry = require('./lib/read-entry.js')
+exports.WriteEntry = require('./lib/write-entry.js')
+exports.Header = require('./lib/header.js')
+exports.Pax = require('./lib/pax.js')
+exports.types = require('./lib/types.js')
diff --git a/node_modules/tar/lib/buffer.js b/node_modules/node-gyp/node_modules/tar/lib/buffer.js
index 7876d5b3e..7876d5b3e 100644
--- a/node_modules/tar/lib/buffer.js
+++ b/node_modules/node-gyp/node_modules/tar/lib/buffer.js
diff --git a/node_modules/node-gyp/node_modules/tar/lib/create.js b/node_modules/node-gyp/node_modules/tar/lib/create.js
new file mode 100644
index 000000000..a37aa52e6
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/create.js
@@ -0,0 +1,105 @@
+'use strict'
+
+// tar -c
+const hlo = require('./high-level-opt.js')
+
+const Pack = require('./pack.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const t = require('./list.js')
+const path = require('path')
+
+const c = module.exports = (opt_, files, cb) => {
+  if (typeof files === 'function')
+    cb = files
+
+  if (Array.isArray(opt_))
+    files = opt_, opt_ = {}
+
+  if (!files || !Array.isArray(files) || !files.length)
+    throw new TypeError('no files or directories specified')
+
+  files = Array.from(files)
+
+  const opt = hlo(opt_)
+
+  if (opt.sync && typeof cb === 'function')
+    throw new TypeError('callback not supported for sync tar functions')
+
+  if (!opt.file && typeof cb === 'function')
+    throw new TypeError('callback only supported with file option')
+
+  return opt.file && opt.sync ? createFileSync(opt, files)
+    : opt.file ? createFile(opt, files, cb)
+    : opt.sync ? createSync(opt, files)
+    : create(opt, files)
+}
+
+const createFileSync = (opt, files) => {
+  const p = new Pack.Sync(opt)
+  const stream = new fsm.WriteStreamSync(opt.file, {
+    mode: opt.mode || 0o666
+  })
+  p.pipe(stream)
+  addFilesSync(p, files)
+}
+
+const createFile = (opt, files, cb) => {
+  const p = new Pack(opt)
+  const stream = new fsm.WriteStream(opt.file, {
+    mode: opt.mode || 0o666
+  })
+  p.pipe(stream)
+
+  const promise = new Promise((res, rej) => {
+    stream.on('error', rej)
+    stream.on('close', res)
+    p.on('error', rej)
+  })
+
+  addFilesAsync(p, files)
+
+  return cb ? promise.then(cb, cb) : promise
+}
+
+const addFilesSync = (p, files) => {
+  files.forEach(file => {
+    if (file.charAt(0) === '@')
+      t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        sync: true,
+        noResume: true,
+        onentry: entry => p.add(entry)
+      })
+    else
+      p.add(file)
+  })
+  p.end()
+}
+
+const addFilesAsync = (p, files) => {
+  while (files.length) {
+    const file = files.shift()
+    if (file.charAt(0) === '@')
+      return t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        noResume: true,
+        onentry: entry => p.add(entry)
+      }).then(_ => addFilesAsync(p, files))
+    else
+      p.add(file)
+  }
+  p.end()
+}
+
+const createSync = (opt, files) => {
+  const p = new Pack.Sync(opt)
+  addFilesSync(p, files)
+  return p
+}
+
+const create = (opt, files) => {
+  const p = new Pack(opt)
+  addFilesAsync(p, files)
+  return p
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/extract.js b/node_modules/node-gyp/node_modules/tar/lib/extract.js
new file mode 100644
index 000000000..cbb458a0a
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/extract.js
@@ -0,0 +1,112 @@
+'use strict'
+
+// tar -x
+const hlo = require('./high-level-opt.js')
+const Unpack = require('./unpack.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const path = require('path')
+
+const x = module.exports = (opt_, files, cb) => {
+  if (typeof opt_ === 'function')
+    cb = opt_, files = null, opt_ = {}
+  else if (Array.isArray(opt_))
+    files = opt_, opt_ = {}
+
+  if (typeof files === 'function')
+    cb = files, files = null
+
+  if (!files)
+    files = []
+  else
+    files = Array.from(files)
+
+  const opt = hlo(opt_)
+
+  if (opt.sync && typeof cb === 'function')
+    throw new TypeError('callback not supported for sync tar functions')
+
+  if (!opt.file && typeof cb === 'function')
+    throw new TypeError('callback only supported with file option')
+
+  if (files.length)
+    filesFilter(opt, files)
+
+  return opt.file && opt.sync ? extractFileSync(opt)
+    : opt.file ? extractFile(opt, cb)
+    : opt.sync ? extractSync(opt)
+    : extract(opt)
+}
+
+// construct a filter that limits the file entries listed
+// include child entries if a dir is included
+const filesFilter = (opt, files) => {
+  const map = new Map(files.map(f => [f.replace(/\/+$/, ''), true]))
+  const filter = opt.filter
+
+  const mapHas = (file, r) => {
+    const root = r || path.parse(file).root || '.'
+    const ret = file === root ? false
+      : map.has(file) ? map.get(file)
+      : mapHas(path.dirname(file), root)
+
+    map.set(file, ret)
+    return ret
+  }
+
+  opt.filter = filter
+    ? (file, entry) => filter(file, entry) && mapHas(file.replace(/\/+$/, ''))
+    : file => mapHas(file.replace(/\/+$/, ''))
+}
+
+const extractFileSync = opt => {
+  const u = new Unpack.Sync(opt)
+
+  const file = opt.file
+  let threw = true
+  let fd
+  const stat = fs.statSync(file)
+  // This trades a zero-byte read() syscall for a stat
+  // However, it will usually result in less memory allocation
+  const readSize = opt.maxReadSize || 16*1024*1024
+  const stream = new fsm.ReadStreamSync(file, {
+    readSize: readSize,
+    size: stat.size
+  })
+  stream.pipe(u)
+}
+
+const extractFile = (opt, cb) => {
+  const u = new Unpack(opt)
+  const readSize = opt.maxReadSize || 16*1024*1024
+
+  const file = opt.file
+  const p = new Promise((resolve, reject) => {
+    u.on('error', reject)
+    u.on('close', resolve)
+
+    // This trades a zero-byte read() syscall for a stat
+    // However, it will usually result in less memory allocation
+    fs.stat(file, (er, stat) => {
+      if (er)
+        reject(er)
+      else {
+        const stream = new fsm.ReadStream(file, {
+          readSize: readSize,
+          size: stat.size
+        })
+        stream.on('error', reject)
+        stream.pipe(u)
+      }
+    })
+  })
+  return cb ? p.then(cb, cb) : p
+}
+
+const extractSync = opt => {
+  return new Unpack.Sync(opt)
+}
+
+const extract = opt => {
+  return new Unpack(opt)
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/header.js b/node_modules/node-gyp/node_modules/tar/lib/header.js
new file mode 100644
index 000000000..d29c3b990
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/header.js
@@ -0,0 +1,289 @@
+'use strict'
+// parse a 512-byte header block to a data object, or vice-versa
+// encode returns `true` if a pax extended header is needed, because
+// the data could not be faithfully encoded in a simple header.
+// (Also, check header.needPax to see if it needs a pax header.)
+
+const Buffer = require('./buffer.js')
+const types = require('./types.js')
+const pathModule = require('path').posix
+const large = require('./large-numbers.js')
+
+const SLURP = Symbol('slurp')
+const TYPE = Symbol('type')
+
+class Header {
+  constructor (data, off, ex, gex) {
+    this.cksumValid = false
+    this.needPax = false
+    this.nullBlock = false
+
+    this.block = null
+    this.path = null
+    this.mode = null
+    this.uid = null
+    this.gid = null
+    this.size = null
+    this.mtime = null
+    this.cksum = null
+    this[TYPE] = '0'
+    this.linkpath = null
+    this.uname = null
+    this.gname = null
+    this.devmaj = 0
+    this.devmin = 0
+    this.atime = null
+    this.ctime = null
+
+    if (Buffer.isBuffer(data))
+      this.decode(data, off || 0, ex, gex)
+    else if (data)
+      this.set(data)
+  }
+
+  decode (buf, off, ex, gex) {
+    if (!off)
+      off = 0
+
+    if (!buf || !(buf.length >= off + 512))
+      throw new Error('need 512 bytes for header')
+
+    this.path = decString(buf, off, 100)
+    this.mode = decNumber(buf, off + 100, 8)
+    this.uid = decNumber(buf, off + 108, 8)
+    this.gid = decNumber(buf, off + 116, 8)
+    this.size = decNumber(buf, off + 124, 12)
+    this.mtime = decDate(buf, off + 136, 12)
+    this.cksum = decNumber(buf, off + 148, 12)
+
+    // if we have extended or global extended headers, apply them now
+    // See https://github.com/npm/node-tar/pull/187
+    this[SLURP](ex)
+    this[SLURP](gex, true)
+
+    // old tar versions marked dirs as a file with a trailing /
+    this[TYPE] = decString(buf, off + 156, 1)
+    if (this[TYPE] === '')
+      this[TYPE] = '0'
+    if (this[TYPE] === '0' && this.path.substr(-1) === '/')
+      this[TYPE] = '5'
+
+    // tar implementations sometimes incorrectly put the stat(dir).size
+    // as the size in the tarball, even though Directory entries are
+    // not able to have any body at all.  In the very rare chance that
+    // it actually DOES have a body, we weren't going to do anything with
+    // it anyway, and it'll just be a warning about an invalid header.
+    if (this[TYPE] === '5')
+      this.size = 0
+
+    this.linkpath = decString(buf, off + 157, 100)
+    if (buf.slice(off + 257, off + 265).toString() === 'ustar\u000000') {
+      this.uname = decString(buf, off + 265, 32)
+      this.gname = decString(buf, off + 297, 32)
+      this.devmaj = decNumber(buf, off + 329, 8)
+      this.devmin = decNumber(buf, off + 337, 8)
+      if (buf[off + 475] !== 0) {
+        // definitely a prefix, definitely >130 chars.
+        const prefix = decString(buf, off + 345, 155)
+        this.path = prefix + '/' + this.path
+      } else {
+        const prefix = decString(buf, off + 345, 130)
+        if (prefix)
+          this.path = prefix + '/' + this.path
+        this.atime = decDate(buf, off + 476, 12)
+        this.ctime = decDate(buf, off + 488, 12)
+      }
+    }
+
+    let sum = 8 * 0x20
+    for (let i = off; i < off + 148; i++) {
+      sum += buf[i]
+    }
+    for (let i = off + 156; i < off + 512; i++) {
+      sum += buf[i]
+    }
+    this.cksumValid = sum === this.cksum
+    if (this.cksum === null && sum === 8 * 0x20)
+      this.nullBlock = true
+  }
+
+  [SLURP] (ex, global) {
+    for (let k in ex) {
+      // we slurp in everything except for the path attribute in
+      // a global extended header, because that's weird.
+      if (ex[k] !== null && ex[k] !== undefined &&
+          !(global && k === 'path'))
+        this[k] = ex[k]
+    }
+  }
+
+  encode (buf, off) {
+    if (!buf) {
+      buf = this.block = Buffer.alloc(512)
+      off = 0
+    }
+
+    if (!off)
+      off = 0
+
+    if (!(buf.length >= off + 512))
+      throw new Error('need 512 bytes for header')
+
+    const prefixSize = this.ctime || this.atime ? 130 : 155
+    const split = splitPrefix(this.path || '', prefixSize)
+    const path = split[0]
+    const prefix = split[1]
+    this.needPax = split[2]
+
+    this.needPax = encString(buf, off, 100, path) || this.needPax
+    this.needPax = encNumber(buf, off + 100, 8, this.mode) || this.needPax
+    this.needPax = encNumber(buf, off + 108, 8, this.uid) || this.needPax
+    this.needPax = encNumber(buf, off + 116, 8, this.gid) || this.needPax
+    this.needPax = encNumber(buf, off + 124, 12, this.size) || this.needPax
+    this.needPax = encDate(buf, off + 136, 12, this.mtime) || this.needPax
+    buf[off + 156] = this[TYPE].charCodeAt(0)
+    this.needPax = encString(buf, off + 157, 100, this.linkpath) || this.needPax
+    buf.write('ustar\u000000', off + 257, 8)
+    this.needPax = encString(buf, off + 265, 32, this.uname) || this.needPax
+    this.needPax = encString(buf, off + 297, 32, this.gname) || this.needPax
+    this.needPax = encNumber(buf, off + 329, 8, this.devmaj) || this.needPax
+    this.needPax = encNumber(buf, off + 337, 8, this.devmin) || this.needPax
+    this.needPax = encString(buf, off + 345, prefixSize, prefix) || this.needPax
+    if (buf[off + 475] !== 0)
+      this.needPax = encString(buf, off + 345, 155, prefix) || this.needPax
+    else {
+      this.needPax = encString(buf, off + 345, 130, prefix) || this.needPax
+      this.needPax = encDate(buf, off + 476, 12, this.atime) || this.needPax
+      this.needPax = encDate(buf, off + 488, 12, this.ctime) || this.needPax
+    }
+
+    let sum = 8 * 0x20
+    for (let i = off; i < off + 148; i++) {
+      sum += buf[i]
+    }
+    for (let i = off + 156; i < off + 512; i++) {
+      sum += buf[i]
+    }
+    this.cksum = sum
+    encNumber(buf, off + 148, 8, this.cksum)
+    this.cksumValid = true
+
+    return this.needPax
+  }
+
+  set (data) {
+    for (let i in data) {
+      if (data[i] !== null && data[i] !== undefined)
+        this[i] = data[i]
+    }
+  }
+
+  get type () {
+    return types.name.get(this[TYPE]) || this[TYPE]
+  }
+
+  get typeKey () {
+    return this[TYPE]
+  }
+
+  set type (type) {
+    if (types.code.has(type))
+      this[TYPE] = types.code.get(type)
+    else
+      this[TYPE] = type
+  }
+}
+
+const splitPrefix = (p, prefixSize) => {
+  const pathSize = 100
+  let pp = p
+  let prefix = ''
+  let ret
+  const root = pathModule.parse(p).root || '.'
+
+  if (Buffer.byteLength(pp) < pathSize)
+    ret = [pp, prefix, false]
+  else {
+    // first set prefix to the dir, and path to the base
+    prefix = pathModule.dirname(pp)
+    pp = pathModule.basename(pp)
+
+    do {
+      // both fit!
+      if (Buffer.byteLength(pp) <= pathSize &&
+          Buffer.byteLength(prefix) <= prefixSize)
+        ret = [pp, prefix, false]
+
+      // prefix fits in prefix, but path doesn't fit in path
+      else if (Buffer.byteLength(pp) > pathSize &&
+          Buffer.byteLength(prefix) <= prefixSize)
+        ret = [pp.substr(0, pathSize - 1), prefix, true]
+
+      else {
+        // make path take a bit from prefix
+        pp = pathModule.join(pathModule.basename(prefix), pp)
+        prefix = pathModule.dirname(prefix)
+      }
+    } while (prefix !== root && !ret)
+
+    // at this point, found no resolution, just truncate
+    if (!ret)
+      ret = [p.substr(0, pathSize - 1), '', true]
+  }
+  return ret
+}
+
+const decString = (buf, off, size) =>
+  buf.slice(off, off + size).toString('utf8').replace(/\0.*/, '')
+
+const decDate = (buf, off, size) =>
+  numToDate(decNumber(buf, off, size))
+
+const numToDate = num => num === null ? null : new Date(num * 1000)
+
+const decNumber = (buf, off, size) =>
+  buf[off] & 0x80 ? large.parse(buf.slice(off, off + size))
+    : decSmallNumber(buf, off, size)
+
+const nanNull = value => isNaN(value) ? null : value
+
+const decSmallNumber = (buf, off, size) =>
+  nanNull(parseInt(
+    buf.slice(off, off + size)
+      .toString('utf8').replace(/\0.*$/, '').trim(), 8))
+
+// the maximum encodable as a null-terminated octal, by field size
+const MAXNUM = {
+  12: 0o77777777777,
+  8 : 0o7777777
+}
+
+const encNumber = (buf, off, size, number) =>
+  number === null ? false :
+  number > MAXNUM[size] || number < 0
+    ? (large.encode(number, buf.slice(off, off + size)), true)
+    : (encSmallNumber(buf, off, size, number), false)
+
+const encSmallNumber = (buf, off, size, number) =>
+  buf.write(octalString(number, size), off, size, 'ascii')
+
+const octalString = (number, size) =>
+  padOctal(Math.floor(number).toString(8), size)
+
+const padOctal = (string, size) =>
+  (string.length === size - 1 ? string
+  : new Array(size - string.length - 1).join('0') + string + ' ') + '\0'
+
+const encDate = (buf, off, size, date) =>
+  date === null ? false :
+  encNumber(buf, off, size, date.getTime() / 1000)
+
+// enough to fill the longest string we've got
+const NULLS = new Array(156).join('\0')
+// pad with nulls, return true if it's longer or non-ascii
+const encString = (buf, off, size, string) =>
+  string === null ? false :
+  (buf.write(string + NULLS, off, size, 'utf8'),
+   string.length !== Buffer.byteLength(string) || string.length > size)
+
+module.exports = Header
diff --git a/node_modules/node-gyp/node_modules/tar/lib/high-level-opt.js b/node_modules/node-gyp/node_modules/tar/lib/high-level-opt.js
new file mode 100644
index 000000000..7333db915
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/high-level-opt.js
@@ -0,0 +1,29 @@
+'use strict'
+
+// turn tar(1) style args like `C` into the more verbose things like `cwd`
+
+const argmap = new Map([
+  ['C', 'cwd'],
+  ['f', 'file'],
+  ['z', 'gzip'],
+  ['P', 'preservePaths'],
+  ['U', 'unlink'],
+  ['strip-components', 'strip'],
+  ['stripComponents', 'strip'],
+  ['keep-newer', 'newer'],
+  ['keepNewer', 'newer'],
+  ['keep-newer-files', 'newer'],
+  ['keepNewerFiles', 'newer'],
+  ['k', 'keep'],
+  ['keep-existing', 'keep'],
+  ['keepExisting', 'keep'],
+  ['m', 'noMtime'],
+  ['no-mtime', 'noMtime'],
+  ['p', 'preserveOwner'],
+  ['L', 'follow'],
+  ['h', 'follow']
+])
+
+const parse = module.exports = opt => opt ? Object.keys(opt).map(k => [
+  argmap.has(k) ? argmap.get(k) : k, opt[k]
+]).reduce((set, kv) => (set[kv[0]] = kv[1], set), Object.create(null)) : {}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/large-numbers.js b/node_modules/node-gyp/node_modules/tar/lib/large-numbers.js
new file mode 100644
index 000000000..3e5c99255
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/large-numbers.js
@@ -0,0 +1,97 @@
+'use strict'
+// Tar can encode large and negative numbers using a leading byte of
+// 0xff for negative, and 0x80 for positive.
+
+const encode = exports.encode = (num, buf) => {
+  if (!Number.isSafeInteger(num))
+    // The number is so large that javascript cannot represent it with integer
+    // precision.
+    throw TypeError('cannot encode number outside of javascript safe integer range')
+  else if (num < 0)
+    encodeNegative(num, buf)
+  else
+    encodePositive(num, buf)
+  return buf
+}
+
+const encodePositive = (num, buf) => {
+  buf[0] = 0x80
+
+  for (var i = buf.length; i > 1; i--) {
+    buf[i-1] = num & 0xff
+    num = Math.floor(num / 0x100)
+  }
+}
+
+const encodeNegative = (num, buf) => {
+  buf[0] = 0xff
+  var flipped = false
+  num = num * -1
+  for (var i = buf.length; i > 1; i--) {
+    var byte = num & 0xff
+    num = Math.floor(num / 0x100)
+    if (flipped)
+      buf[i-1] = onesComp(byte)
+    else if (byte === 0)
+      buf[i-1] = 0
+    else {
+      flipped = true
+      buf[i-1] = twosComp(byte)
+    }
+  }
+}
+
+const parse = exports.parse = (buf) => {
+  var post = buf[buf.length - 1]
+  var pre = buf[0]
+  var value;
+  if (pre === 0x80)
+    value = pos(buf.slice(1, buf.length))
+  else if (pre === 0xff)
+    value = twos(buf)
+  else
+    throw TypeError('invalid base256 encoding')
+
+  if (!Number.isSafeInteger(value))
+    // The number is so large that javascript cannot represent it with integer
+    // precision.
+    throw TypeError('parsed number outside of javascript safe integer range')
+
+  return value
+}
+
+const twos = (buf) => {
+  var len = buf.length
+  var sum = 0
+  var flipped = false
+  for (var i = len - 1; i > -1; i--) {
+    var byte = buf[i]
+    var f
+    if (flipped)
+      f = onesComp(byte)
+    else if (byte === 0)
+      f = byte
+    else {
+      flipped = true
+      f = twosComp(byte)
+    }
+    if (f !== 0)
+      sum -= f * Math.pow(256, len - i - 1)
+  }
+  return sum
+}
+
+const pos = (buf) => {
+  var len = buf.length
+  var sum = 0
+  for (var i = len - 1; i > -1; i--) {
+    var byte = buf[i]
+    if (byte !== 0)
+      sum += byte * Math.pow(256, len - i - 1)
+  }
+  return sum
+}
+
+const onesComp = byte => (0xff ^ byte) & 0xff
+
+const twosComp = byte => ((0xff ^ byte) + 1) & 0xff
diff --git a/node_modules/node-gyp/node_modules/tar/lib/list.js b/node_modules/node-gyp/node_modules/tar/lib/list.js
new file mode 100644
index 000000000..250ebe001
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/list.js
@@ -0,0 +1,130 @@
+'use strict'
+
+const Buffer = require('./buffer.js')
+
+// XXX: This shares a lot in common with extract.js
+// maybe some DRY opportunity here?
+
+// tar -t
+const hlo = require('./high-level-opt.js')
+const Parser = require('./parse.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const path = require('path')
+
+const t = module.exports = (opt_, files, cb) => {
+  if (typeof opt_ === 'function')
+    cb = opt_, files = null, opt_ = {}
+  else if (Array.isArray(opt_))
+    files = opt_, opt_ = {}
+
+  if (typeof files === 'function')
+    cb = files, files = null
+
+  if (!files)
+    files = []
+  else
+    files = Array.from(files)
+
+  const opt = hlo(opt_)
+
+  if (opt.sync && typeof cb === 'function')
+    throw new TypeError('callback not supported for sync tar functions')
+
+  if (!opt.file && typeof cb === 'function')
+    throw new TypeError('callback only supported with file option')
+
+  if (files.length)
+    filesFilter(opt, files)
+
+  if (!opt.noResume)
+    onentryFunction(opt)
+
+  return opt.file && opt.sync ? listFileSync(opt)
+    : opt.file ? listFile(opt, cb)
+    : list(opt)
+}
+
+const onentryFunction = opt => {
+  const onentry = opt.onentry
+  opt.onentry = onentry ? e => {
+    onentry(e)
+    e.resume()
+  } : e => e.resume()
+}
+
+// construct a filter that limits the file entries listed
+// include child entries if a dir is included
+const filesFilter = (opt, files) => {
+  const map = new Map(files.map(f => [f.replace(/\/+$/, ''), true]))
+  const filter = opt.filter
+
+  const mapHas = (file, r) => {
+    const root = r || path.parse(file).root || '.'
+    const ret = file === root ? false
+      : map.has(file) ? map.get(file)
+      : mapHas(path.dirname(file), root)
+
+    map.set(file, ret)
+    return ret
+  }
+
+  opt.filter = filter
+    ? (file, entry) => filter(file, entry) && mapHas(file.replace(/\/+$/, ''))
+    : file => mapHas(file.replace(/\/+$/, ''))
+}
+
+const listFileSync = opt => {
+  const p = list(opt)
+  const file = opt.file
+  let threw = true
+  let fd
+  try {
+    const stat = fs.statSync(file)
+    const readSize = opt.maxReadSize || 16*1024*1024
+    if (stat.size < readSize) {
+      p.end(fs.readFileSync(file))
+    } else {
+      let pos = 0
+      const buf = Buffer.allocUnsafe(readSize)
+      fd = fs.openSync(file, 'r')
+      while (pos < stat.size) {
+        let bytesRead = fs.readSync(fd, buf, 0, readSize, pos)
+        pos += bytesRead
+        p.write(buf.slice(0, bytesRead))
+      }
+      p.end()
+    }
+    threw = false
+  } finally {
+    if (threw && fd)
+      try { fs.closeSync(fd) } catch (er) {}
+  }
+}
+
+const listFile = (opt, cb) => {
+  const parse = new Parser(opt)
+  const readSize = opt.maxReadSize || 16*1024*1024
+
+  const file = opt.file
+  const p = new Promise((resolve, reject) => {
+    parse.on('error', reject)
+    parse.on('end', resolve)
+
+    fs.stat(file, (er, stat) => {
+      if (er)
+        reject(er)
+      else {
+        const stream = new fsm.ReadStream(file, {
+          readSize: readSize,
+          size: stat.size
+        })
+        stream.on('error', reject)
+        stream.pipe(parse)
+      }
+    })
+  })
+  return cb ? p.then(cb, cb) : p
+}
+
+const list = opt => new Parser(opt)
diff --git a/node_modules/node-gyp/node_modules/tar/lib/mkdir.js b/node_modules/node-gyp/node_modules/tar/lib/mkdir.js
new file mode 100644
index 000000000..c6a154c24
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/mkdir.js
@@ -0,0 +1,206 @@
+'use strict'
+// wrapper around mkdirp for tar's needs.
+
+// TODO: This should probably be a class, not functionally
+// passing around state in a gazillion args.
+
+const mkdirp = require('mkdirp')
+const fs = require('fs')
+const path = require('path')
+const chownr = require('chownr')
+
+class SymlinkError extends Error {
+  constructor (symlink, path) {
+    super('Cannot extract through symbolic link')
+    this.path = path
+    this.symlink = symlink
+  }
+
+  get name () {
+    return 'SylinkError'
+  }
+}
+
+class CwdError extends Error {
+  constructor (path, code) {
+    super(code + ': Cannot cd into \'' + path + '\'')
+    this.path = path
+    this.code = code
+  }
+
+  get name () {
+    return 'CwdError'
+  }
+}
+
+const mkdir = module.exports = (dir, opt, cb) => {
+  // if there's any overlap between mask and mode,
+  // then we'll need an explicit chmod
+  const umask = opt.umask
+  const mode = opt.mode | 0o0700
+  const needChmod = (mode & umask) !== 0
+
+  const uid = opt.uid
+  const gid = opt.gid
+  const doChown = typeof uid === 'number' &&
+    typeof gid === 'number' &&
+    ( uid !== opt.processUid || gid !== opt.processGid )
+
+  const preserve = opt.preserve
+  const unlink = opt.unlink
+  const cache = opt.cache
+  const cwd = opt.cwd
+
+  const done = (er, created) => {
+    if (er)
+      cb(er)
+    else {
+      cache.set(dir, true)
+      if (created && doChown)
+        chownr(created, uid, gid, er => done(er))
+      else if (needChmod)
+        fs.chmod(dir, mode, cb)
+      else
+        cb()
+    }
+  }
+
+  if (cache && cache.get(dir) === true)
+    return done()
+
+  if (dir === cwd)
+    return fs.stat(dir, (er, st) => {
+      if (er || !st.isDirectory())
+        er = new CwdError(dir, er && er.code || 'ENOTDIR')
+      done(er)
+    })
+
+  if (preserve)
+    return mkdirp(dir, mode, done)
+
+  const sub = path.relative(cwd, dir)
+  const parts = sub.split(/\/|\\/)
+  mkdir_(cwd, parts, mode, cache, unlink, cwd, null, done)
+}
+
+const mkdir_ = (base, parts, mode, cache, unlink, cwd, created, cb) => {
+  if (!parts.length)
+    return cb(null, created)
+  const p = parts.shift()
+  const part = base + '/' + p
+  if (cache.get(part))
+    return mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
+  fs.mkdir(part, mode, onmkdir(part, parts, mode, cache, unlink, cwd, created, cb))
+}
+
+const onmkdir = (part, parts, mode, cache, unlink, cwd, created, cb) => er => {
+  if (er) {
+    if (er.path && path.dirname(er.path) === cwd &&
+        (er.code === 'ENOTDIR' || er.code === 'ENOENT'))
+      return cb(new CwdError(cwd, er.code))
+
+    fs.lstat(part, (statEr, st) => {
+      if (statEr)
+        cb(statEr)
+      else if (st.isDirectory())
+        mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
+      else if (unlink)
+        fs.unlink(part, er => {
+          if (er)
+            return cb(er)
+          fs.mkdir(part, mode, onmkdir(part, parts, mode, cache, unlink, cwd, created, cb))
+        })
+      else if (st.isSymbolicLink())
+        return cb(new SymlinkError(part, part + '/' + parts.join('/')))
+      else
+        cb(er)
+    })
+  } else {
+    created = created || part
+    mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
+  }
+}
+
+const mkdirSync = module.exports.sync = (dir, opt) => {
+  // if there's any overlap between mask and mode,
+  // then we'll need an explicit chmod
+  const umask = opt.umask
+  const mode = opt.mode | 0o0700
+  const needChmod = (mode & umask) !== 0
+
+  const uid = opt.uid
+  const gid = opt.gid
+  const doChown = typeof uid === 'number' &&
+    typeof gid === 'number' &&
+    ( uid !== opt.processUid || gid !== opt.processGid )
+
+  const preserve = opt.preserve
+  const unlink = opt.unlink
+  const cache = opt.cache
+  const cwd = opt.cwd
+
+  const done = (created) => {
+    cache.set(dir, true)
+    if (created && doChown)
+      chownr.sync(created, uid, gid)
+    if (needChmod)
+      fs.chmodSync(dir, mode)
+  }
+
+  if (cache && cache.get(dir) === true)
+    return done()
+
+  if (dir === cwd) {
+    let ok = false
+    let code = 'ENOTDIR'
+    try {
+      ok = fs.statSync(dir).isDirectory()
+    } catch (er) {
+      code = er.code
+    } finally {
+      if (!ok)
+        throw new CwdError(dir, code)
+    }
+    done()
+    return
+  }
+
+  if (preserve)
+    return done(mkdirp.sync(dir, mode))
+
+  const sub = path.relative(cwd, dir)
+  const parts = sub.split(/\/|\\/)
+  let created = null
+  for (let p = parts.shift(), part = cwd;
+       p && (part += '/' + p);
+       p = parts.shift()) {
+
+    if (cache.get(part))
+      continue
+
+    try {
+      fs.mkdirSync(part, mode)
+      created = created || part
+      cache.set(part, true)
+    } catch (er) {
+      if (er.path && path.dirname(er.path) === cwd &&
+          (er.code === 'ENOTDIR' || er.code === 'ENOENT'))
+        return new CwdError(cwd, er.code)
+
+      const st = fs.lstatSync(part)
+      if (st.isDirectory()) {
+        cache.set(part, true)
+        continue
+      } else if (unlink) {
+        fs.unlinkSync(part)
+        fs.mkdirSync(part, mode)
+        created = created || part
+        cache.set(part, true)
+        continue
+      } else if (st.isSymbolicLink())
+        return new SymlinkError(part, part + '/' + parts.join('/'))
+    }
+  }
+
+  return done(created)
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/mode-fix.js b/node_modules/node-gyp/node_modules/tar/lib/mode-fix.js
new file mode 100644
index 000000000..3363a3b15
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/mode-fix.js
@@ -0,0 +1,14 @@
+'use strict'
+module.exports = (mode, isDir) => {
+  mode &= 0o7777
+  // if dirs are readable, then they should be listable
+  if (isDir) {
+    if (mode & 0o400)
+      mode |= 0o100
+    if (mode & 0o40)
+      mode |= 0o10
+    if (mode & 0o4)
+      mode |= 0o1
+  }
+  return mode
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/pack.js b/node_modules/node-gyp/node_modules/tar/lib/pack.js
new file mode 100644
index 000000000..857cea910
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/pack.js
@@ -0,0 +1,404 @@
+'use strict'
+
+const Buffer = require('./buffer.js')
+
+// A readable tar stream creator
+// Technically, this is a transform stream that you write paths into,
+// and tar format comes out of.
+// The `add()` method is like `write()` but returns this,
+// and end() return `this` as well, so you can
+// do `new Pack(opt).add('files').add('dir').end().pipe(output)
+// You could also do something like:
+// streamOfPaths().pipe(new Pack()).pipe(new fs.WriteStream('out.tar'))
+
+class PackJob {
+  constructor (path, absolute) {
+    this.path = path || './'
+    this.absolute = absolute
+    this.entry = null
+    this.stat = null
+    this.readdir = null
+    this.pending = false
+    this.ignore = false
+    this.piped = false
+  }
+}
+
+const MiniPass = require('minipass')
+const zlib = require('minizlib')
+const ReadEntry = require('./read-entry.js')
+const WriteEntry = require('./write-entry.js')
+const WriteEntrySync = WriteEntry.Sync
+const WriteEntryTar = WriteEntry.Tar
+const Yallist = require('yallist')
+const EOF = Buffer.alloc(1024)
+const ONSTAT = Symbol('onStat')
+const ENDED = Symbol('ended')
+const QUEUE = Symbol('queue')
+const CURRENT = Symbol('current')
+const PROCESS = Symbol('process')
+const PROCESSING = Symbol('processing')
+const PROCESSJOB = Symbol('processJob')
+const JOBS = Symbol('jobs')
+const JOBDONE = Symbol('jobDone')
+const ADDFSENTRY = Symbol('addFSEntry')
+const ADDTARENTRY = Symbol('addTarEntry')
+const STAT = Symbol('stat')
+const READDIR = Symbol('readdir')
+const ONREADDIR = Symbol('onreaddir')
+const PIPE = Symbol('pipe')
+const ENTRY = Symbol('entry')
+const ENTRYOPT = Symbol('entryOpt')
+const WRITEENTRYCLASS = Symbol('writeEntryClass')
+const WRITE = Symbol('write')
+const ONDRAIN = Symbol('ondrain')
+
+const fs = require('fs')
+const path = require('path')
+const warner = require('./warn-mixin.js')
+
+const Pack = warner(class Pack extends MiniPass {
+  constructor (opt) {
+    super(opt)
+    opt = opt || Object.create(null)
+    this.opt = opt
+    this.cwd = opt.cwd || process.cwd()
+    this.maxReadSize = opt.maxReadSize
+    this.preservePaths = !!opt.preservePaths
+    this.strict = !!opt.strict
+    this.noPax = !!opt.noPax
+    this.prefix = (opt.prefix || '').replace(/(\\|\/)+$/, '')
+    this.linkCache = opt.linkCache || new Map()
+    this.statCache = opt.statCache || new Map()
+    this.readdirCache = opt.readdirCache || new Map()
+
+    this[WRITEENTRYCLASS] = WriteEntry
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+
+    this.zip = null
+    if (opt.gzip) {
+      if (typeof opt.gzip !== 'object')
+        opt.gzip = {}
+      this.zip = new zlib.Gzip(opt.gzip)
+      this.zip.on('data', chunk => super.write(chunk))
+      this.zip.on('end', _ => super.end())
+      this.zip.on('drain', _ => this[ONDRAIN]())
+      this.on('resume', _ => this.zip.resume())
+    } else
+      this.on('drain', this[ONDRAIN])
+
+    this.portable = !!opt.portable
+    this.noDirRecurse = !!opt.noDirRecurse
+    this.follow = !!opt.follow
+    this.noMtime = !!opt.noMtime
+    this.mtime = opt.mtime || null
+
+    this.filter = typeof opt.filter === 'function' ? opt.filter : _ => true
+
+    this[QUEUE] = new Yallist
+    this[JOBS] = 0
+    this.jobs = +opt.jobs || 4
+    this[PROCESSING] = false
+    this[ENDED] = false
+  }
+
+  [WRITE] (chunk) {
+    return super.write(chunk)
+  }
+
+  add (path) {
+    this.write(path)
+    return this
+  }
+
+  end (path) {
+    if (path)
+      this.write(path)
+    this[ENDED] = true
+    this[PROCESS]()
+    return this
+  }
+
+  write (path) {
+    if (this[ENDED])
+      throw new Error('write after end')
+
+    if (path instanceof ReadEntry)
+      this[ADDTARENTRY](path)
+    else
+      this[ADDFSENTRY](path)
+    return this.flowing
+  }
+
+  [ADDTARENTRY] (p) {
+    const absolute = path.resolve(this.cwd, p.path)
+    if (this.prefix)
+      p.path = this.prefix + '/' + p.path.replace(/^\.(\/+|$)/, '')
+
+    // in this case, we don't have to wait for the stat
+    if (!this.filter(p.path, p))
+      p.resume()
+    else {
+      const job = new PackJob(p.path, absolute, false)
+      job.entry = new WriteEntryTar(p, this[ENTRYOPT](job))
+      job.entry.on('end', _ => this[JOBDONE](job))
+      this[JOBS] += 1
+      this[QUEUE].push(job)
+    }
+
+    this[PROCESS]()
+  }
+
+  [ADDFSENTRY] (p) {
+    const absolute = path.resolve(this.cwd, p)
+    if (this.prefix)
+      p = this.prefix + '/' + p.replace(/^\.(\/+|$)/, '')
+
+    this[QUEUE].push(new PackJob(p, absolute))
+    this[PROCESS]()
+  }
+
+  [STAT] (job) {
+    job.pending = true
+    this[JOBS] += 1
+    const stat = this.follow ? 'stat' : 'lstat'
+    fs[stat](job.absolute, (er, stat) => {
+      job.pending = false
+      this[JOBS] -= 1
+      if (er)
+        this.emit('error', er)
+      else
+        this[ONSTAT](job, stat)
+    })
+  }
+
+  [ONSTAT] (job, stat) {
+    this.statCache.set(job.absolute, stat)
+    job.stat = stat
+
+    // now we have the stat, we can filter it.
+    if (!this.filter(job.path, stat))
+      job.ignore = true
+
+    this[PROCESS]()
+  }
+
+  [READDIR] (job) {
+    job.pending = true
+    this[JOBS] += 1
+    fs.readdir(job.absolute, (er, entries) => {
+      job.pending = false
+      this[JOBS] -= 1
+      if (er)
+        return this.emit('error', er)
+      this[ONREADDIR](job, entries)
+    })
+  }
+
+  [ONREADDIR] (job, entries) {
+    this.readdirCache.set(job.absolute, entries)
+    job.readdir = entries
+    this[PROCESS]()
+  }
+
+  [PROCESS] () {
+    if (this[PROCESSING])
+      return
+
+    this[PROCESSING] = true
+    for (let w = this[QUEUE].head;
+         w !== null && this[JOBS] < this.jobs;
+         w = w.next) {
+      this[PROCESSJOB](w.value)
+      if (w.value.ignore) {
+        const p = w.next
+        this[QUEUE].removeNode(w)
+        w.next = p
+      }
+    }
+
+    this[PROCESSING] = false
+
+    if (this[ENDED] && !this[QUEUE].length && this[JOBS] === 0) {
+      if (this.zip)
+        this.zip.end(EOF)
+      else {
+        super.write(EOF)
+        super.end()
+      }
+    }
+  }
+
+  get [CURRENT] () {
+    return this[QUEUE] && this[QUEUE].head && this[QUEUE].head.value
+  }
+
+  [JOBDONE] (job) {
+    this[QUEUE].shift()
+    this[JOBS] -= 1
+    this[PROCESS]()
+  }
+
+  [PROCESSJOB] (job) {
+    if (job.pending)
+      return
+
+    if (job.entry) {
+      if (job === this[CURRENT] && !job.piped)
+        this[PIPE](job)
+      return
+    }
+
+    if (!job.stat) {
+      if (this.statCache.has(job.absolute))
+        this[ONSTAT](job, this.statCache.get(job.absolute))
+      else
+        this[STAT](job)
+    }
+    if (!job.stat)
+      return
+
+    // filtered out!
+    if (job.ignore)
+      return
+
+    if (!this.noDirRecurse && job.stat.isDirectory() && !job.readdir) {
+      if (this.readdirCache.has(job.absolute))
+        this[ONREADDIR](job, this.readdirCache.get(job.absolute))
+      else
+        this[READDIR](job)
+      if (!job.readdir)
+        return
+    }
+
+    // we know it doesn't have an entry, because that got checked above
+    job.entry = this[ENTRY](job)
+    if (!job.entry) {
+      job.ignore = true
+      return
+    }
+
+    if (job === this[CURRENT] && !job.piped)
+      this[PIPE](job)
+  }
+
+  [ENTRYOPT] (job) {
+    return {
+      onwarn: (msg, data) => {
+        this.warn(msg, data)
+      },
+      noPax: this.noPax,
+      cwd: this.cwd,
+      absolute: job.absolute,
+      preservePaths: this.preservePaths,
+      maxReadSize: this.maxReadSize,
+      strict: this.strict,
+      portable: this.portable,
+      linkCache: this.linkCache,
+      statCache: this.statCache,
+      noMtime: this.noMtime,
+      mtime: this.mtime
+    }
+  }
+
+  [ENTRY] (job) {
+    this[JOBS] += 1
+    try {
+      return new this[WRITEENTRYCLASS](job.path, this[ENTRYOPT](job))
+        .on('end', () => this[JOBDONE](job))
+        .on('error', er => this.emit('error', er))
+    } catch (er) {
+      this.emit('error', er)
+    }
+  }
+
+  [ONDRAIN] () {
+    if (this[CURRENT] && this[CURRENT].entry)
+      this[CURRENT].entry.resume()
+  }
+
+  // like .pipe() but using super, because our write() is special
+  [PIPE] (job) {
+    job.piped = true
+
+    if (job.readdir)
+      job.readdir.forEach(entry => {
+        const p = this.prefix ?
+          job.path.slice(this.prefix.length + 1) || './'
+          : job.path
+
+        const base = p === './' ? '' : p.replace(/\/*$/, '/')
+        this[ADDFSENTRY](base + entry)
+      })
+
+    const source = job.entry
+    const zip = this.zip
+
+    if (zip)
+      source.on('data', chunk => {
+        if (!zip.write(chunk))
+          source.pause()
+      })
+    else
+      source.on('data', chunk => {
+        if (!super.write(chunk))
+          source.pause()
+      })
+  }
+
+  pause () {
+    if (this.zip)
+      this.zip.pause()
+    return super.pause()
+  }
+})
+
+class PackSync extends Pack {
+  constructor (opt) {
+    super(opt)
+    this[WRITEENTRYCLASS] = WriteEntrySync
+  }
+
+  // pause/resume are no-ops in sync streams.
+  pause () {}
+  resume () {}
+
+  [STAT] (job) {
+    const stat = this.follow ? 'statSync' : 'lstatSync'
+    this[ONSTAT](job, fs[stat](job.absolute))
+  }
+
+  [READDIR] (job, stat) {
+    this[ONREADDIR](job, fs.readdirSync(job.absolute))
+  }
+
+  // gotta get it all in this tick
+  [PIPE] (job) {
+    const source = job.entry
+    const zip = this.zip
+
+    if (job.readdir)
+      job.readdir.forEach(entry => {
+        const p = this.prefix ?
+          job.path.slice(this.prefix.length + 1) || './'
+          : job.path
+
+        const base = p === './' ? '' : p.replace(/\/*$/, '/')
+        this[ADDFSENTRY](base + entry)
+      })
+
+    if (zip)
+      source.on('data', chunk => {
+        zip.write(chunk)
+      })
+    else
+      source.on('data', chunk => {
+        super[WRITE](chunk)
+      })
+  }
+}
+
+Pack.Sync = PackSync
+
+module.exports = Pack
diff --git a/node_modules/node-gyp/node_modules/tar/lib/parse.js b/node_modules/node-gyp/node_modules/tar/lib/parse.js
new file mode 100644
index 000000000..43d4383dd
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/parse.js
@@ -0,0 +1,428 @@
+'use strict'
+
+// this[BUFFER] is the remainder of a chunk if we're waiting for
+// the full 512 bytes of a header to come in.  We will Buffer.concat()
+// it to the next write(), which is a mem copy, but a small one.
+//
+// this[QUEUE] is a Yallist of entries that haven't been emitted
+// yet this can only get filled up if the user keeps write()ing after
+// a write() returns false, or does a write() with more than one entry
+//
+// We don't buffer chunks, we always parse them and either create an
+// entry, or push it into the active entry.  The ReadEntry class knows
+// to throw data away if .ignore=true
+//
+// Shift entry off the buffer when it emits 'end', and emit 'entry' for
+// the next one in the list.
+//
+// At any time, we're pushing body chunks into the entry at WRITEENTRY,
+// and waiting for 'end' on the entry at READENTRY
+//
+// ignored entries get .resume() called on them straight away
+
+const warner = require('./warn-mixin.js')
+const path = require('path')
+const Header = require('./header.js')
+const EE = require('events')
+const Yallist = require('yallist')
+const maxMetaEntrySize = 1024 * 1024
+const Entry = require('./read-entry.js')
+const Pax = require('./pax.js')
+const zlib = require('minizlib')
+const Buffer = require('./buffer.js')
+
+const gzipHeader = Buffer.from([0x1f, 0x8b])
+const STATE = Symbol('state')
+const WRITEENTRY = Symbol('writeEntry')
+const READENTRY = Symbol('readEntry')
+const NEXTENTRY = Symbol('nextEntry')
+const PROCESSENTRY = Symbol('processEntry')
+const EX = Symbol('extendedHeader')
+const GEX = Symbol('globalExtendedHeader')
+const META = Symbol('meta')
+const EMITMETA = Symbol('emitMeta')
+const BUFFER = Symbol('buffer')
+const QUEUE = Symbol('queue')
+const ENDED = Symbol('ended')
+const EMITTEDEND = Symbol('emittedEnd')
+const EMIT = Symbol('emit')
+const UNZIP = Symbol('unzip')
+const CONSUMECHUNK = Symbol('consumeChunk')
+const CONSUMECHUNKSUB = Symbol('consumeChunkSub')
+const CONSUMEBODY = Symbol('consumeBody')
+const CONSUMEMETA = Symbol('consumeMeta')
+const CONSUMEHEADER = Symbol('consumeHeader')
+const CONSUMING = Symbol('consuming')
+const BUFFERCONCAT = Symbol('bufferConcat')
+const MAYBEEND = Symbol('maybeEnd')
+const WRITING = Symbol('writing')
+const ABORTED = Symbol('aborted')
+const DONE = Symbol('onDone')
+
+const noop = _ => true
+
+module.exports = warner(class Parser extends EE {
+  constructor (opt) {
+    opt = opt || {}
+    super(opt)
+
+    if (opt.ondone)
+      this.on(DONE, opt.ondone)
+    else
+      this.on(DONE, _ => {
+        this.emit('prefinish')
+        this.emit('finish')
+        this.emit('end')
+        this.emit('close')
+      })
+
+    this.strict = !!opt.strict
+    this.maxMetaEntrySize = opt.maxMetaEntrySize || maxMetaEntrySize
+    this.filter = typeof opt.filter === 'function' ? opt.filter : noop
+
+    // have to set this so that streams are ok piping into it
+    this.writable = true
+    this.readable = false
+
+    this[QUEUE] = new Yallist()
+    this[BUFFER] = null
+    this[READENTRY] = null
+    this[WRITEENTRY] = null
+    this[STATE] = 'begin'
+    this[META] = ''
+    this[EX] = null
+    this[GEX] = null
+    this[ENDED] = false
+    this[UNZIP] = null
+    this[ABORTED] = false
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+    if (typeof opt.onentry === 'function')
+      this.on('entry', opt.onentry)
+  }
+
+  [CONSUMEHEADER] (chunk, position) {
+    let header
+    try {
+      header = new Header(chunk, position, this[EX], this[GEX])
+    } catch (er) {
+      return this.warn('invalid entry', er)
+    }
+
+    if (header.nullBlock)
+      this[EMIT]('nullBlock')
+    else if (!header.cksumValid)
+      this.warn('invalid entry', header)
+    else if (!header.path)
+      this.warn('invalid: path is required', header)
+    else {
+      const type = header.type
+      if (/^(Symbolic)?Link$/.test(type) && !header.linkpath)
+        this.warn('invalid: linkpath required', header)
+      else if (!/^(Symbolic)?Link$/.test(type) && header.linkpath)
+        this.warn('invalid: linkpath forbidden', header)
+      else {
+        const entry = this[WRITEENTRY] = new Entry(header, this[EX], this[GEX])
+
+        if (entry.meta) {
+          if (entry.size > this.maxMetaEntrySize) {
+            entry.ignore = true
+            this[EMIT]('ignoredEntry', entry)
+            this[STATE] = 'ignore'
+          } else if (entry.size > 0) {
+            this[META] = ''
+            entry.on('data', c => this[META] += c)
+            this[STATE] = 'meta'
+          }
+        } else {
+
+          this[EX] = null
+          entry.ignore = entry.ignore || !this.filter(entry.path, entry)
+          if (entry.ignore) {
+            this[EMIT]('ignoredEntry', entry)
+            this[STATE] = entry.remain ? 'ignore' : 'begin'
+          } else {
+            if (entry.remain)
+              this[STATE] = 'body'
+            else {
+              this[STATE] = 'begin'
+              entry.end()
+            }
+
+            if (!this[READENTRY]) {
+              this[QUEUE].push(entry)
+              this[NEXTENTRY]()
+            } else
+              this[QUEUE].push(entry)
+          }
+        }
+      }
+    }
+  }
+
+  [PROCESSENTRY] (entry) {
+    let go = true
+
+    if (!entry) {
+      this[READENTRY] = null
+      go = false
+    } else if (Array.isArray(entry))
+      this.emit.apply(this, entry)
+    else {
+      this[READENTRY] = entry
+      this.emit('entry', entry)
+      if (!entry.emittedEnd) {
+        entry.on('end', _ => this[NEXTENTRY]())
+        go = false
+      }
+    }
+
+    return go
+  }
+
+  [NEXTENTRY] () {
+    do {} while (this[PROCESSENTRY](this[QUEUE].shift()))
+
+    if (!this[QUEUE].length) {
+      // At this point, there's nothing in the queue, but we may have an
+      // entry which is being consumed (readEntry).
+      // If we don't, then we definitely can handle more data.
+      // If we do, and either it's flowing, or it has never had any data
+      // written to it, then it needs more.
+      // The only other possibility is that it has returned false from a
+      // write() call, so we wait for the next drain to continue.
+      const re = this[READENTRY]
+      const drainNow = !re || re.flowing || re.size === re.remain
+      if (drainNow) {
+        if (!this[WRITING])
+          this.emit('drain')
+      } else
+        re.once('drain', _ => this.emit('drain'))
+     }
+  }
+
+  [CONSUMEBODY] (chunk, position) {
+    // write up to but no  more than writeEntry.blockRemain
+    const entry = this[WRITEENTRY]
+    const br = entry.blockRemain
+    const c = (br >= chunk.length && position === 0) ? chunk
+      : chunk.slice(position, position + br)
+
+    entry.write(c)
+
+    if (!entry.blockRemain) {
+      this[STATE] = 'begin'
+      this[WRITEENTRY] = null
+      entry.end()
+    }
+
+    return c.length
+  }
+
+  [CONSUMEMETA] (chunk, position) {
+    const entry = this[WRITEENTRY]
+    const ret = this[CONSUMEBODY](chunk, position)
+
+    // if we finished, then the entry is reset
+    if (!this[WRITEENTRY])
+      this[EMITMETA](entry)
+
+    return ret
+  }
+
+  [EMIT] (ev, data, extra) {
+    if (!this[QUEUE].length && !this[READENTRY])
+      this.emit(ev, data, extra)
+    else
+      this[QUEUE].push([ev, data, extra])
+  }
+
+  [EMITMETA] (entry) {
+    this[EMIT]('meta', this[META])
+    switch (entry.type) {
+      case 'ExtendedHeader':
+      case 'OldExtendedHeader':
+        this[EX] = Pax.parse(this[META], this[EX], false)
+        break
+
+      case 'GlobalExtendedHeader':
+        this[GEX] = Pax.parse(this[META], this[GEX], true)
+        break
+
+      case 'NextFileHasLongPath':
+      case 'OldGnuLongPath':
+        this[EX] = this[EX] || Object.create(null)
+        this[EX].path = this[META].replace(/\0.*/, '')
+        break
+
+      case 'NextFileHasLongLinkpath':
+        this[EX] = this[EX] || Object.create(null)
+        this[EX].linkpath = this[META].replace(/\0.*/, '')
+        break
+
+      /* istanbul ignore next */
+      default: throw new Error('unknown meta: ' + entry.type)
+    }
+  }
+
+  abort (msg, error) {
+    this[ABORTED] = true
+    this.warn(msg, error)
+    this.emit('abort', error)
+    this.emit('error', error)
+  }
+
+  write (chunk) {
+    if (this[ABORTED])
+      return
+
+    // first write, might be gzipped
+    if (this[UNZIP] === null && chunk) {
+      if (this[BUFFER]) {
+        chunk = Buffer.concat([this[BUFFER], chunk])
+        this[BUFFER] = null
+      }
+      if (chunk.length < gzipHeader.length) {
+        this[BUFFER] = chunk
+        return true
+      }
+      for (let i = 0; this[UNZIP] === null && i < gzipHeader.length; i++) {
+        if (chunk[i] !== gzipHeader[i])
+          this[UNZIP] = false
+      }
+      if (this[UNZIP] === null) {
+        const ended = this[ENDED]
+        this[ENDED] = false
+        this[UNZIP] = new zlib.Unzip()
+        this[UNZIP].on('data', chunk => this[CONSUMECHUNK](chunk))
+        this[UNZIP].on('error', er =>
+          this.abort(er.message, er))
+        this[UNZIP].on('end', _ => {
+          this[ENDED] = true
+          this[CONSUMECHUNK]()
+        })
+        this[WRITING] = true
+        const ret = this[UNZIP][ended ? 'end' : 'write' ](chunk)
+        this[WRITING] = false
+        return ret
+      }
+    }
+
+    this[WRITING] = true
+    if (this[UNZIP])
+      this[UNZIP].write(chunk)
+    else
+      this[CONSUMECHUNK](chunk)
+    this[WRITING] = false
+
+    // return false if there's a queue, or if the current entry isn't flowing
+    const ret =
+      this[QUEUE].length ? false :
+      this[READENTRY] ? this[READENTRY].flowing :
+      true
+
+    // if we have no queue, then that means a clogged READENTRY
+    if (!ret && !this[QUEUE].length)
+      this[READENTRY].once('drain', _ => this.emit('drain'))
+
+    return ret
+  }
+
+  [BUFFERCONCAT] (c) {
+    if (c && !this[ABORTED])
+      this[BUFFER] = this[BUFFER] ? Buffer.concat([this[BUFFER], c]) : c
+  }
+
+  [MAYBEEND] () {
+    if (this[ENDED] &&
+        !this[EMITTEDEND] &&
+        !this[ABORTED] &&
+        !this[CONSUMING]) {
+      this[EMITTEDEND] = true
+      const entry = this[WRITEENTRY]
+      if (entry && entry.blockRemain) {
+        const have = this[BUFFER] ? this[BUFFER].length : 0
+        this.warn('Truncated input (needed ' + entry.blockRemain +
+                  ' more bytes, only ' + have + ' available)', entry)
+        if (this[BUFFER])
+          entry.write(this[BUFFER])
+        entry.end()
+      }
+      this[EMIT](DONE)
+    }
+  }
+
+  [CONSUMECHUNK] (chunk) {
+    if (this[CONSUMING]) {
+      this[BUFFERCONCAT](chunk)
+    } else if (!chunk && !this[BUFFER]) {
+      this[MAYBEEND]()
+    } else {
+      this[CONSUMING] = true
+      if (this[BUFFER]) {
+        this[BUFFERCONCAT](chunk)
+        const c = this[BUFFER]
+        this[BUFFER] = null
+        this[CONSUMECHUNKSUB](c)
+      } else {
+        this[CONSUMECHUNKSUB](chunk)
+      }
+
+      while (this[BUFFER] && this[BUFFER].length >= 512 && !this[ABORTED]) {
+        const c = this[BUFFER]
+        this[BUFFER] = null
+        this[CONSUMECHUNKSUB](c)
+      }
+      this[CONSUMING] = false
+    }
+
+    if (!this[BUFFER] || this[ENDED])
+      this[MAYBEEND]()
+  }
+
+  [CONSUMECHUNKSUB] (chunk) {
+    // we know that we are in CONSUMING mode, so anything written goes into
+    // the buffer.  Advance the position and put any remainder in the buffer.
+    let position = 0
+    let length = chunk.length
+    while (position + 512 <= length && !this[ABORTED]) {
+      switch (this[STATE]) {
+        case 'begin':
+          this[CONSUMEHEADER](chunk, position)
+          position += 512
+          break
+
+        case 'ignore':
+        case 'body':
+          position += this[CONSUMEBODY](chunk, position)
+          break
+
+        case 'meta':
+          position += this[CONSUMEMETA](chunk, position)
+          break
+
+        /* istanbul ignore next */
+        default:
+          throw new Error('invalid state: ' + this[STATE])
+      }
+    }
+
+    if (position < length) {
+      if (this[BUFFER])
+        this[BUFFER] = Buffer.concat([chunk.slice(position), this[BUFFER]])
+      else
+        this[BUFFER] = chunk.slice(position)
+    }
+  }
+
+  end (chunk) {
+    if (!this[ABORTED]) {
+      if (this[UNZIP])
+        this[UNZIP].end(chunk)
+      else {
+        this[ENDED] = true
+        this.write(chunk)
+      }
+    }
+  }
+})
diff --git a/node_modules/node-gyp/node_modules/tar/lib/pax.js b/node_modules/node-gyp/node_modules/tar/lib/pax.js
new file mode 100644
index 000000000..9d7e4aba5
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/pax.js
@@ -0,0 +1,146 @@
+'use strict'
+const Buffer = require('./buffer.js')
+const Header = require('./header.js')
+const path = require('path')
+
+class Pax {
+  constructor (obj, global) {
+    this.atime = obj.atime || null
+    this.charset = obj.charset || null
+    this.comment = obj.comment || null
+    this.ctime = obj.ctime || null
+    this.gid = obj.gid || null
+    this.gname = obj.gname || null
+    this.linkpath = obj.linkpath || null
+    this.mtime = obj.mtime || null
+    this.path = obj.path || null
+    this.size = obj.size || null
+    this.uid = obj.uid || null
+    this.uname = obj.uname || null
+    this.dev = obj.dev || null
+    this.ino = obj.ino || null
+    this.nlink = obj.nlink || null
+    this.global = global || false
+  }
+
+  encode () {
+    const body = this.encodeBody()
+    if (body === '')
+      return null
+
+    const bodyLen = Buffer.byteLength(body)
+    // round up to 512 bytes
+    // add 512 for header
+    const bufLen = 512 * Math.ceil(1 + bodyLen / 512)
+    const buf = Buffer.allocUnsafe(bufLen)
+
+    // 0-fill the header section, it might not hit every field
+    for (let i = 0; i < 512; i++) {
+      buf[i] = 0
+    }
+
+    new Header({
+      // XXX split the path
+      // then the path should be PaxHeader + basename, but less than 99,
+      // prepend with the dirname
+      path: ('PaxHeader/' + path.basename(this.path)).slice(0, 99),
+      mode: this.mode || 0o644,
+      uid: this.uid || null,
+      gid: this.gid || null,
+      size: bodyLen,
+      mtime: this.mtime || null,
+      type: this.global ? 'GlobalExtendedHeader' : 'ExtendedHeader',
+      linkpath: '',
+      uname: this.uname || '',
+      gname: this.gname || '',
+      devmaj: 0,
+      devmin: 0,
+      atime: this.atime || null,
+      ctime: this.ctime || null
+    }).encode(buf)
+
+    buf.write(body, 512, bodyLen, 'utf8')
+
+    // null pad after the body
+    for (let i = bodyLen + 512; i < buf.length; i++) {
+      buf[i] = 0
+    }
+
+    return buf
+  }
+
+  encodeBody () {
+    return (
+      this.encodeField('path') +
+      this.encodeField('ctime') +
+      this.encodeField('atime') +
+      this.encodeField('dev') +
+      this.encodeField('ino') +
+      this.encodeField('nlink') +
+      this.encodeField('charset') +
+      this.encodeField('comment') +
+      this.encodeField('gid') +
+      this.encodeField('gname') +
+      this.encodeField('linkpath') +
+      this.encodeField('mtime') +
+      this.encodeField('size') +
+      this.encodeField('uid') +
+      this.encodeField('uname')
+    )
+  }
+
+  encodeField (field) {
+    if (this[field] === null || this[field] === undefined)
+      return ''
+    const v = this[field] instanceof Date ? this[field].getTime() / 1000
+      : this[field]
+    const s = ' ' +
+      (field === 'dev' || field === 'ino' || field === 'nlink'
+       ? 'SCHILY.' : '') +
+      field + '=' + v + '\n'
+    const byteLen = Buffer.byteLength(s)
+    // the digits includes the length of the digits in ascii base-10
+    // so if it's 9 characters, then adding 1 for the 9 makes it 10
+    // which makes it 11 chars.
+    let digits = Math.floor(Math.log(byteLen) / Math.log(10)) + 1
+    if (byteLen + digits >= Math.pow(10, digits))
+      digits += 1
+    const len = digits + byteLen
+    return len + s
+  }
+}
+
+Pax.parse = (string, ex, g) => new Pax(merge(parseKV(string), ex), g)
+
+const merge = (a, b) =>
+  b ? Object.keys(a).reduce((s, k) => (s[k] = a[k], s), b) : a
+
+const parseKV = string =>
+  string
+    .replace(/\n$/, '')
+    .split('\n')
+    .reduce(parseKVLine, Object.create(null))
+
+const parseKVLine = (set, line) => {
+  const n = parseInt(line, 10)
+
+  // XXX Values with \n in them will fail this.
+  // Refactor to not be a naive line-by-line parse.
+  if (n !== Buffer.byteLength(line) + 1)
+    return set
+
+  line = line.substr((n + ' ').length)
+  const kv = line.split('=')
+  const k = kv.shift().replace(/^SCHILY\.(dev|ino|nlink)/, '$1')
+  if (!k)
+    return set
+
+  const v = kv.join('=')
+  set[k] = /^([A-Z]+\.)?([mac]|birth|creation)time$/.test(k)
+    ?  new Date(v * 1000)
+    : /^[0-9]+$/.test(v) ? +v
+    : v
+  return set
+}
+
+module.exports = Pax
diff --git a/node_modules/node-gyp/node_modules/tar/lib/read-entry.js b/node_modules/node-gyp/node_modules/tar/lib/read-entry.js
new file mode 100644
index 000000000..8acee94ba
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/read-entry.js
@@ -0,0 +1,98 @@
+'use strict'
+const types = require('./types.js')
+const MiniPass = require('minipass')
+
+const SLURP = Symbol('slurp')
+module.exports = class ReadEntry extends MiniPass {
+  constructor (header, ex, gex) {
+    super()
+    // read entries always start life paused.  this is to avoid the
+    // situation where Minipass's auto-ending empty streams results
+    // in an entry ending before we're ready for it.
+    this.pause()
+    this.extended = ex
+    this.globalExtended = gex
+    this.header = header
+    this.startBlockSize = 512 * Math.ceil(header.size / 512)
+    this.blockRemain = this.startBlockSize
+    this.remain = header.size
+    this.type = header.type
+    this.meta = false
+    this.ignore = false
+    switch (this.type) {
+      case 'File':
+      case 'OldFile':
+      case 'Link':
+      case 'SymbolicLink':
+      case 'CharacterDevice':
+      case 'BlockDevice':
+      case 'Directory':
+      case 'FIFO':
+      case 'ContiguousFile':
+      case 'GNUDumpDir':
+        break
+
+      case 'NextFileHasLongLinkpath':
+      case 'NextFileHasLongPath':
+      case 'OldGnuLongPath':
+      case 'GlobalExtendedHeader':
+      case 'ExtendedHeader':
+      case 'OldExtendedHeader':
+        this.meta = true
+        break
+
+      // NOTE: gnutar and bsdtar treat unrecognized types as 'File'
+      // it may be worth doing the same, but with a warning.
+      default:
+        this.ignore = true
+    }
+
+    this.path = header.path
+    this.mode = header.mode
+    if (this.mode)
+      this.mode = this.mode & 0o7777
+    this.uid = header.uid
+    this.gid = header.gid
+    this.uname = header.uname
+    this.gname = header.gname
+    this.size = header.size
+    this.mtime = header.mtime
+    this.atime = header.atime
+    this.ctime = header.ctime
+    this.linkpath = header.linkpath
+    this.uname = header.uname
+    this.gname = header.gname
+
+    if (ex) this[SLURP](ex)
+    if (gex) this[SLURP](gex, true)
+  }
+
+  write (data) {
+    const writeLen = data.length
+    if (writeLen > this.blockRemain)
+      throw new Error('writing more to entry than is appropriate')
+
+    const r = this.remain
+    const br = this.blockRemain
+    this.remain = Math.max(0, r - writeLen)
+    this.blockRemain = Math.max(0, br - writeLen)
+    if (this.ignore)
+      return true
+
+    if (r >= writeLen)
+      return super.write(data)
+
+    // r < writeLen
+    return super.write(data.slice(0, r))
+  }
+
+  [SLURP] (ex, global) {
+    for (let k in ex) {
+      // we slurp in everything except for the path attribute in
+      // a global extended header, because that's weird.
+      if (ex[k] !== null && ex[k] !== undefined &&
+          !(global && k === 'path'))
+        this[k] = ex[k]
+    }
+  }
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/replace.js b/node_modules/node-gyp/node_modules/tar/lib/replace.js
new file mode 100644
index 000000000..571cee94a
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/replace.js
@@ -0,0 +1,220 @@
+'use strict'
+const Buffer = require('./buffer.js')
+
+// tar -r
+const hlo = require('./high-level-opt.js')
+const Pack = require('./pack.js')
+const Parse = require('./parse.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const t = require('./list.js')
+const path = require('path')
+
+// starting at the head of the file, read a Header
+// If the checksum is invalid, that's our position to start writing
+// If it is, jump forward by the specified size (round up to 512)
+// and try again.
+// Write the new Pack stream starting there.
+
+const Header = require('./header.js')
+
+const r = module.exports = (opt_, files, cb) => {
+  const opt = hlo(opt_)
+
+  if (!opt.file)
+    throw new TypeError('file is required')
+
+  if (opt.gzip)
+    throw new TypeError('cannot append to compressed archives')
+
+  if (!files || !Array.isArray(files) || !files.length)
+    throw new TypeError('no files or directories specified')
+
+  files = Array.from(files)
+
+  return opt.sync ? replaceSync(opt, files)
+    : replace(opt, files, cb)
+}
+
+const replaceSync = (opt, files) => {
+  const p = new Pack.Sync(opt)
+
+  let threw = true
+  let fd
+  let position
+
+  try {
+    try {
+      fd = fs.openSync(opt.file, 'r+')
+    } catch (er) {
+      if (er.code === 'ENOENT')
+        fd = fs.openSync(opt.file, 'w+')
+      else
+        throw er
+    }
+
+    const st = fs.fstatSync(fd)
+    const headBuf = Buffer.alloc(512)
+
+    POSITION: for (position = 0; position < st.size; position += 512) {
+      for (let bufPos = 0, bytes = 0; bufPos < 512; bufPos += bytes) {
+        bytes = fs.readSync(
+          fd, headBuf, bufPos, headBuf.length - bufPos, position + bufPos
+        )
+
+        if (position === 0 && headBuf[0] === 0x1f && headBuf[1] === 0x8b)
+          throw new Error('cannot append to compressed archives')
+
+        if (!bytes)
+          break POSITION
+      }
+
+      let h = new Header(headBuf)
+      if (!h.cksumValid)
+        break
+      let entryBlockSize = 512 * Math.ceil(h.size / 512)
+      if (position + entryBlockSize + 512 > st.size)
+        break
+      // the 512 for the header we just parsed will be added as well
+      // also jump ahead all the blocks for the body
+      position += entryBlockSize
+      if (opt.mtimeCache)
+        opt.mtimeCache.set(h.path, h.mtime)
+    }
+    threw = false
+
+    streamSync(opt, p, position, fd, files)
+  } finally {
+    if (threw)
+      try { fs.closeSync(fd) } catch (er) {}
+  }
+}
+
+const streamSync = (opt, p, position, fd, files) => {
+  const stream = new fsm.WriteStreamSync(opt.file, {
+    fd: fd,
+    start: position
+  })
+  p.pipe(stream)
+  addFilesSync(p, files)
+}
+
+const replace = (opt, files, cb) => {
+  files = Array.from(files)
+  const p = new Pack(opt)
+
+  const getPos = (fd, size, cb_) => {
+    const cb = (er, pos) => {
+      if (er)
+        fs.close(fd, _ => cb_(er))
+      else
+        cb_(null, pos)
+    }
+
+    let position = 0
+    if (size === 0)
+      return cb(null, 0)
+
+    let bufPos = 0
+    const headBuf = Buffer.alloc(512)
+    const onread = (er, bytes) => {
+      if (er)
+        return cb(er)
+      bufPos += bytes
+      if (bufPos < 512 && bytes)
+        return fs.read(
+          fd, headBuf, bufPos, headBuf.length - bufPos,
+          position + bufPos, onread
+        )
+
+      if (position === 0 && headBuf[0] === 0x1f && headBuf[1] === 0x8b)
+        return cb(new Error('cannot append to compressed archives'))
+
+      // truncated header
+      if (bufPos < 512)
+        return cb(null, position)
+
+      const h = new Header(headBuf)
+      if (!h.cksumValid)
+        return cb(null, position)
+
+      const entryBlockSize = 512 * Math.ceil(h.size / 512)
+      if (position + entryBlockSize + 512 > size)
+        return cb(null, position)
+
+      position += entryBlockSize + 512
+      if (position >= size)
+        return cb(null, position)
+
+      if (opt.mtimeCache)
+        opt.mtimeCache.set(h.path, h.mtime)
+      bufPos = 0
+      fs.read(fd, headBuf, 0, 512, position, onread)
+    }
+    fs.read(fd, headBuf, 0, 512, position, onread)
+  }
+
+  const promise = new Promise((resolve, reject) => {
+    p.on('error', reject)
+    let flag = 'r+'
+    const onopen = (er, fd) => {
+      if (er && er.code === 'ENOENT' && flag === 'r+') {
+        flag = 'w+'
+        return fs.open(opt.file, flag, onopen)
+      }
+
+      if (er)
+        return reject(er)
+
+      fs.fstat(fd, (er, st) => {
+        if (er)
+          return reject(er)
+        getPos(fd, st.size, (er, position) => {
+          if (er)
+            return reject(er)
+          const stream = new fsm.WriteStream(opt.file, {
+            fd: fd,
+            start: position
+          })
+          p.pipe(stream)
+          stream.on('error', reject)
+          stream.on('close', resolve)
+          addFilesAsync(p, files)
+        })
+      })
+    }
+    fs.open(opt.file, flag, onopen)
+  })
+
+  return cb ? promise.then(cb, cb) : promise
+}
+
+const addFilesSync = (p, files) => {
+  files.forEach(file => {
+    if (file.charAt(0) === '@')
+      t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        sync: true,
+        noResume: true,
+        onentry: entry => p.add(entry)
+      })
+    else
+      p.add(file)
+  })
+  p.end()
+}
+
+const addFilesAsync = (p, files) => {
+  while (files.length) {
+    const file = files.shift()
+    if (file.charAt(0) === '@')
+      return t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        noResume: true,
+        onentry: entry => p.add(entry)
+      }).then(_ => addFilesAsync(p, files))
+    else
+      p.add(file)
+  }
+  p.end()
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/types.js b/node_modules/node-gyp/node_modules/tar/lib/types.js
new file mode 100644
index 000000000..df425652b
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/types.js
@@ -0,0 +1,44 @@
+'use strict'
+// map types from key to human-friendly name
+exports.name = new Map([
+  ['0', 'File'],
+  // same as File
+  ['', 'OldFile'],
+  ['1', 'Link'],
+  ['2', 'SymbolicLink'],
+  // Devices and FIFOs aren't fully supported
+  // they are parsed, but skipped when unpacking
+  ['3', 'CharacterDevice'],
+  ['4', 'BlockDevice'],
+  ['5', 'Directory'],
+  ['6', 'FIFO'],
+  // same as File
+  ['7', 'ContiguousFile'],
+  // pax headers
+  ['g', 'GlobalExtendedHeader'],
+  ['x', 'ExtendedHeader'],
+  // vendor-specific stuff
+  // skip
+  ['A', 'SolarisACL'],
+  // like 5, but with data, which should be skipped
+  ['D', 'GNUDumpDir'],
+  // metadata only, skip
+  ['I', 'Inode'],
+  // data = link path of next file
+  ['K', 'NextFileHasLongLinkpath'],
+  // data = path of next file
+  ['L', 'NextFileHasLongPath'],
+  // skip
+  ['M', 'ContinuationFile'],
+  // like L
+  ['N', 'OldGnuLongPath'],
+  // skip
+  ['S', 'SparseFile'],
+  // skip
+  ['V', 'TapeVolumeHeader'],
+  // like x
+  ['X', 'OldExtendedHeader']
+])
+
+// map the other direction
+exports.code = new Map(Array.from(exports.name).map(kv => [kv[1], kv[0]]))
diff --git a/node_modules/node-gyp/node_modules/tar/lib/unpack.js b/node_modules/node-gyp/node_modules/tar/lib/unpack.js
new file mode 100644
index 000000000..fc765096e
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/unpack.js
@@ -0,0 +1,621 @@
+'use strict'
+
+const assert = require('assert')
+const EE = require('events').EventEmitter
+const Parser = require('./parse.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const path = require('path')
+const mkdir = require('./mkdir.js')
+const mkdirSync = mkdir.sync
+const wc = require('./winchars.js')
+
+const ONENTRY = Symbol('onEntry')
+const CHECKFS = Symbol('checkFs')
+const ISREUSABLE = Symbol('isReusable')
+const MAKEFS = Symbol('makeFs')
+const FILE = Symbol('file')
+const DIRECTORY = Symbol('directory')
+const LINK = Symbol('link')
+const SYMLINK = Symbol('symlink')
+const HARDLINK = Symbol('hardlink')
+const UNSUPPORTED = Symbol('unsupported')
+const UNKNOWN = Symbol('unknown')
+const CHECKPATH = Symbol('checkPath')
+const MKDIR = Symbol('mkdir')
+const ONERROR = Symbol('onError')
+const PENDING = Symbol('pending')
+const PEND = Symbol('pend')
+const UNPEND = Symbol('unpend')
+const ENDED = Symbol('ended')
+const MAYBECLOSE = Symbol('maybeClose')
+const SKIP = Symbol('skip')
+const DOCHOWN = Symbol('doChown')
+const UID = Symbol('uid')
+const GID = Symbol('gid')
+const crypto = require('crypto')
+
+// Unlinks on Windows are not atomic.
+//
+// This means that if you have a file entry, followed by another
+// file entry with an identical name, and you cannot re-use the file
+// (because it's a hardlink, or because unlink:true is set, or it's
+// Windows, which does not have useful nlink values), then the unlink
+// will be committed to the disk AFTER the new file has been written
+// over the old one, deleting the new file.
+//
+// To work around this, on Windows systems, we rename the file and then
+// delete the renamed file.  It's a sloppy kludge, but frankly, I do not
+// know of a better way to do this, given windows' non-atomic unlink
+// semantics.
+//
+// See: https://github.com/npm/node-tar/issues/183
+/* istanbul ignore next */
+const unlinkFile = (path, cb) => {
+  if (process.platform !== 'win32')
+    return fs.unlink(path, cb)
+
+  const name = path + '.DELETE.' + crypto.randomBytes(16).toString('hex')
+  fs.rename(path, name, er => {
+    if (er)
+      return cb(er)
+    fs.unlink(name, cb)
+  })
+}
+
+/* istanbul ignore next */
+const unlinkFileSync = path => {
+  if (process.platform !== 'win32')
+    return fs.unlinkSync(path)
+
+  const name = path + '.DELETE.' + crypto.randomBytes(16).toString('hex')
+  fs.renameSync(path, name)
+  fs.unlinkSync(name)
+}
+
+// this.gid, entry.gid, this.processUid
+const uint32 = (a, b, c) =>
+  a === a >>> 0 ? a
+  : b === b >>> 0 ? b
+  : c
+
+class Unpack extends Parser {
+  constructor (opt) {
+    if (!opt)
+      opt = {}
+
+    opt.ondone = _ => {
+      this[ENDED] = true
+      this[MAYBECLOSE]()
+    }
+
+    super(opt)
+
+    this.transform = typeof opt.transform === 'function' ? opt.transform : null
+
+    this.writable = true
+    this.readable = false
+
+    this[PENDING] = 0
+    this[ENDED] = false
+
+    this.dirCache = opt.dirCache || new Map()
+
+    if (typeof opt.uid === 'number' || typeof opt.gid === 'number') {
+      // need both or neither
+      if (typeof opt.uid !== 'number' || typeof opt.gid !== 'number')
+        throw new TypeError('cannot set owner without number uid and gid')
+      if (opt.preserveOwner)
+        throw new TypeError(
+          'cannot preserve owner in archive and also set owner explicitly')
+      this.uid = opt.uid
+      this.gid = opt.gid
+      this.setOwner = true
+    } else {
+      this.uid = null
+      this.gid = null
+      this.setOwner = false
+    }
+
+    // default true for root
+    if (opt.preserveOwner === undefined && typeof opt.uid !== 'number')
+      this.preserveOwner = process.getuid && process.getuid() === 0
+    else
+      this.preserveOwner = !!opt.preserveOwner
+
+    this.processUid = (this.preserveOwner || this.setOwner) && process.getuid ?
+      process.getuid() : null
+    this.processGid = (this.preserveOwner || this.setOwner) && process.getgid ?
+      process.getgid() : null
+
+    // mostly just for testing, but useful in some cases.
+    // Forcibly trigger a chown on every entry, no matter what
+    this.forceChown = opt.forceChown === true
+
+    // turn ><?| in filenames into 0xf000-higher encoded forms
+    this.win32 = !!opt.win32 || process.platform === 'win32'
+
+    // do not unpack over files that are newer than what's in the archive
+    this.newer = !!opt.newer
+
+    // do not unpack over ANY files
+    this.keep = !!opt.keep
+
+    // do not set mtime/atime of extracted entries
+    this.noMtime = !!opt.noMtime
+
+    // allow .., absolute path entries, and unpacking through symlinks
+    // without this, warn and skip .., relativize absolutes, and error
+    // on symlinks in extraction path
+    this.preservePaths = !!opt.preservePaths
+
+    // unlink files and links before writing. This breaks existing hard
+    // links, and removes symlink directories rather than erroring
+    this.unlink = !!opt.unlink
+
+    this.cwd = path.resolve(opt.cwd || process.cwd())
+    this.strip = +opt.strip || 0
+    this.processUmask = process.umask()
+    this.umask = typeof opt.umask === 'number' ? opt.umask : this.processUmask
+    // default mode for dirs created as parents
+    this.dmode = opt.dmode || (0o0777 & (~this.umask))
+    this.fmode = opt.fmode || (0o0666 & (~this.umask))
+    this.on('entry', entry => this[ONENTRY](entry))
+  }
+
+  [MAYBECLOSE] () {
+    if (this[ENDED] && this[PENDING] === 0) {
+      this.emit('prefinish')
+      this.emit('finish')
+      this.emit('end')
+      this.emit('close')
+    }
+  }
+
+  [CHECKPATH] (entry) {
+    if (this.strip) {
+      const parts = entry.path.split(/\/|\\/)
+      if (parts.length < this.strip)
+        return false
+      entry.path = parts.slice(this.strip).join('/')
+
+      if (entry.type === 'Link') {
+        const linkparts = entry.linkpath.split(/\/|\\/)
+        if (linkparts.length >= this.strip)
+          entry.linkpath = linkparts.slice(this.strip).join('/')
+      }
+    }
+
+    if (!this.preservePaths) {
+      const p = entry.path
+      if (p.match(/(^|\/|\\)\.\.(\\|\/|$)/)) {
+        this.warn('path contains \'..\'', p)
+        return false
+      }
+
+      // absolutes on posix are also absolutes on win32
+      // so we only need to test this one to get both
+      if (path.win32.isAbsolute(p)) {
+        const parsed = path.win32.parse(p)
+        this.warn('stripping ' + parsed.root + ' from absolute path', p)
+        entry.path = p.substr(parsed.root.length)
+      }
+    }
+
+    // only encode : chars that aren't drive letter indicators
+    if (this.win32) {
+      const parsed = path.win32.parse(entry.path)
+      entry.path = parsed.root === '' ? wc.encode(entry.path)
+        : parsed.root + wc.encode(entry.path.substr(parsed.root.length))
+    }
+
+    if (path.isAbsolute(entry.path))
+      entry.absolute = entry.path
+    else
+      entry.absolute = path.resolve(this.cwd, entry.path)
+
+    return true
+  }
+
+  [ONENTRY] (entry) {
+    if (!this[CHECKPATH](entry))
+      return entry.resume()
+
+    assert.equal(typeof entry.absolute, 'string')
+
+    switch (entry.type) {
+      case 'Directory':
+      case 'GNUDumpDir':
+        if (entry.mode)
+          entry.mode = entry.mode | 0o700
+
+      case 'File':
+      case 'OldFile':
+      case 'ContiguousFile':
+      case 'Link':
+      case 'SymbolicLink':
+        return this[CHECKFS](entry)
+
+      case 'CharacterDevice':
+      case 'BlockDevice':
+      case 'FIFO':
+        return this[UNSUPPORTED](entry)
+    }
+  }
+
+  [ONERROR] (er, entry) {
+    // Cwd has to exist, or else nothing works. That's serious.
+    // Other errors are warnings, which raise the error in strict
+    // mode, but otherwise continue on.
+    if (er.name === 'CwdError')
+      this.emit('error', er)
+    else {
+      this.warn(er.message, er)
+      this[UNPEND]()
+      entry.resume()
+    }
+  }
+
+  [MKDIR] (dir, mode, cb) {
+    mkdir(dir, {
+      uid: this.uid,
+      gid: this.gid,
+      processUid: this.processUid,
+      processGid: this.processGid,
+      umask: this.processUmask,
+      preserve: this.preservePaths,
+      unlink: this.unlink,
+      cache: this.dirCache,
+      cwd: this.cwd,
+      mode: mode
+    }, cb)
+  }
+
+  [DOCHOWN] (entry) {
+    // in preserve owner mode, chown if the entry doesn't match process
+    // in set owner mode, chown if setting doesn't match process
+    return this.forceChown ||
+      this.preserveOwner &&
+      ( typeof entry.uid === 'number' && entry.uid !== this.processUid ||
+        typeof entry.gid === 'number' && entry.gid !== this.processGid )
+      ||
+      ( typeof this.uid === 'number' && this.uid !== this.processUid ||
+        typeof this.gid === 'number' && this.gid !== this.processGid )
+  }
+
+  [UID] (entry) {
+    return uint32(this.uid, entry.uid, this.processUid)
+  }
+
+  [GID] (entry) {
+    return uint32(this.gid, entry.gid, this.processGid)
+  }
+
+  [FILE] (entry) {
+    const mode = entry.mode & 0o7777 || this.fmode
+    const stream = new fsm.WriteStream(entry.absolute, {
+      mode: mode,
+      autoClose: false
+    })
+    stream.on('error', er => this[ONERROR](er, entry))
+
+    let actions = 1
+    const done = er => {
+      if (er)
+        return this[ONERROR](er, entry)
+
+      if (--actions === 0)
+        fs.close(stream.fd, _ => this[UNPEND]())
+    }
+
+    stream.on('finish', _ => {
+      // if futimes fails, try utimes
+      // if utimes fails, fail with the original error
+      // same for fchown/chown
+      const abs = entry.absolute
+      const fd = stream.fd
+
+      if (entry.mtime && !this.noMtime) {
+        actions++
+        const atime = entry.atime || new Date()
+        const mtime = entry.mtime
+        fs.futimes(fd, atime, mtime, er =>
+          er ? fs.utimes(abs, atime, mtime, er2 => done(er2 && er))
+          : done())
+      }
+
+      if (this[DOCHOWN](entry)) {
+        actions++
+        const uid = this[UID](entry)
+        const gid = this[GID](entry)
+        fs.fchown(fd, uid, gid, er =>
+          er ? fs.chown(abs, uid, gid, er2 => done(er2 && er))
+          : done())
+      }
+
+      done()
+    })
+
+    const tx = this.transform ? this.transform(entry) || entry : entry
+    if (tx !== entry) {
+      tx.on('error', er => this[ONERROR](er, entry))
+      entry.pipe(tx)
+    }
+    tx.pipe(stream)
+  }
+
+  [DIRECTORY] (entry) {
+    const mode = entry.mode & 0o7777 || this.dmode
+    this[MKDIR](entry.absolute, mode, er => {
+      if (er)
+        return this[ONERROR](er, entry)
+
+      let actions = 1
+      const done = _ => {
+        if (--actions === 0) {
+          this[UNPEND]()
+          entry.resume()
+        }
+      }
+
+      if (entry.mtime && !this.noMtime) {
+        actions++
+        fs.utimes(entry.absolute, entry.atime || new Date(), entry.mtime, done)
+      }
+
+      if (this[DOCHOWN](entry)) {
+        actions++
+        fs.chown(entry.absolute, this[UID](entry), this[GID](entry), done)
+      }
+
+      done()
+    })
+  }
+
+  [UNSUPPORTED] (entry) {
+    this.warn('unsupported entry type: ' + entry.type, entry)
+    entry.resume()
+  }
+
+  [SYMLINK] (entry) {
+    this[LINK](entry, entry.linkpath, 'symlink')
+  }
+
+  [HARDLINK] (entry) {
+    this[LINK](entry, path.resolve(this.cwd, entry.linkpath), 'link')
+  }
+
+  [PEND] () {
+    this[PENDING]++
+  }
+
+  [UNPEND] () {
+    this[PENDING]--
+    this[MAYBECLOSE]()
+  }
+
+  [SKIP] (entry) {
+    this[UNPEND]()
+    entry.resume()
+  }
+
+  // Check if we can reuse an existing filesystem entry safely and
+  // overwrite it, rather than unlinking and recreating
+  // Windows doesn't report a useful nlink, so we just never reuse entries
+  [ISREUSABLE] (entry, st) {
+    return entry.type === 'File' &&
+      !this.unlink &&
+      st.isFile() &&
+      st.nlink <= 1 &&
+      process.platform !== 'win32'
+  }
+
+  // check if a thing is there, and if so, try to clobber it
+  [CHECKFS] (entry) {
+    this[PEND]()
+    this[MKDIR](path.dirname(entry.absolute), this.dmode, er => {
+      if (er)
+        return this[ONERROR](er, entry)
+      fs.lstat(entry.absolute, (er, st) => {
+        if (st && (this.keep || this.newer && st.mtime > entry.mtime))
+          this[SKIP](entry)
+        else if (er || this[ISREUSABLE](entry, st))
+          this[MAKEFS](null, entry)
+        else if (st.isDirectory()) {
+          if (entry.type === 'Directory') {
+            if (!entry.mode || (st.mode & 0o7777) === entry.mode)
+              this[MAKEFS](null, entry)
+            else
+              fs.chmod(entry.absolute, entry.mode, er => this[MAKEFS](er, entry))
+          } else
+            fs.rmdir(entry.absolute, er => this[MAKEFS](er, entry))
+        } else
+          unlinkFile(entry.absolute, er => this[MAKEFS](er, entry))
+      })
+    })
+  }
+
+  [MAKEFS] (er, entry) {
+    if (er)
+      return this[ONERROR](er, entry)
+
+    switch (entry.type) {
+      case 'File':
+      case 'OldFile':
+      case 'ContiguousFile':
+        return this[FILE](entry)
+
+      case 'Link':
+        return this[HARDLINK](entry)
+
+      case 'SymbolicLink':
+        return this[SYMLINK](entry)
+
+      case 'Directory':
+      case 'GNUDumpDir':
+        return this[DIRECTORY](entry)
+    }
+  }
+
+  [LINK] (entry, linkpath, link) {
+    // XXX: get the type ('file' or 'dir') for windows
+    fs[link](linkpath, entry.absolute, er => {
+      if (er)
+        return this[ONERROR](er, entry)
+      this[UNPEND]()
+      entry.resume()
+    })
+  }
+}
+
+class UnpackSync extends Unpack {
+  constructor (opt) {
+    super(opt)
+  }
+
+  [CHECKFS] (entry) {
+    const er = this[MKDIR](path.dirname(entry.absolute), this.dmode)
+    if (er)
+      return this[ONERROR](er, entry)
+    try {
+      const st = fs.lstatSync(entry.absolute)
+      if (this.keep || this.newer && st.mtime > entry.mtime)
+        return this[SKIP](entry)
+      else if (this[ISREUSABLE](entry, st))
+        return this[MAKEFS](null, entry)
+      else {
+        try {
+          if (st.isDirectory()) {
+            if (entry.type === 'Directory') {
+              if (entry.mode && (st.mode & 0o7777) !== entry.mode)
+                fs.chmodSync(entry.absolute, entry.mode)
+            } else
+              fs.rmdirSync(entry.absolute)
+          } else
+            unlinkFileSync(entry.absolute)
+          return this[MAKEFS](null, entry)
+        } catch (er) {
+          return this[ONERROR](er, entry)
+        }
+      }
+    } catch (er) {
+      return this[MAKEFS](null, entry)
+    }
+  }
+
+  [FILE] (entry) {
+    const mode = entry.mode & 0o7777 || this.fmode
+
+    const oner = er => {
+      try { fs.closeSync(fd) } catch (_) {}
+      if (er)
+        this[ONERROR](er, entry)
+    }
+
+    let stream
+    let fd
+    try {
+      fd = fs.openSync(entry.absolute, 'w', mode)
+    } catch (er) {
+      return oner(er)
+    }
+    const tx = this.transform ? this.transform(entry) || entry : entry
+    if (tx !== entry) {
+      tx.on('error', er => this[ONERROR](er, entry))
+      entry.pipe(tx)
+    }
+
+    tx.on('data', chunk => {
+      try {
+        fs.writeSync(fd, chunk, 0, chunk.length)
+      } catch (er) {
+        oner(er)
+      }
+    })
+
+    tx.on('end', _ => {
+      let er = null
+      // try both, falling futimes back to utimes
+      // if either fails, handle the first error
+      if (entry.mtime && !this.noMtime) {
+        const atime = entry.atime || new Date()
+        const mtime = entry.mtime
+        try {
+          fs.futimesSync(fd, atime, mtime)
+        } catch (futimeser) {
+          try {
+            fs.utimesSync(entry.absolute, atime, mtime)
+          } catch (utimeser) {
+            er = futimeser
+          }
+        }
+      }
+
+      if (this[DOCHOWN](entry)) {
+        const uid = this[UID](entry)
+        const gid = this[GID](entry)
+
+        try {
+          fs.fchownSync(fd, uid, gid)
+        } catch (fchowner) {
+          try {
+            fs.chownSync(entry.absolute, uid, gid)
+          } catch (chowner) {
+            er = er || fchowner
+          }
+        }
+      }
+
+      oner(er)
+    })
+  }
+
+  [DIRECTORY] (entry) {
+    const mode = entry.mode & 0o7777 || this.dmode
+    const er = this[MKDIR](entry.absolute, mode)
+    if (er)
+      return this[ONERROR](er, entry)
+    if (entry.mtime && !this.noMtime) {
+      try {
+        fs.utimesSync(entry.absolute, entry.atime || new Date(), entry.mtime)
+      } catch (er) {}
+    }
+    if (this[DOCHOWN](entry)) {
+      try {
+        fs.chownSync(entry.absolute, this[UID](entry), this[GID](entry))
+      } catch (er) {}
+    }
+    entry.resume()
+  }
+
+  [MKDIR] (dir, mode) {
+    try {
+      return mkdir.sync(dir, {
+        uid: this.uid,
+        gid: this.gid,
+        processUid: this.processUid,
+        processGid: this.processGid,
+        umask: this.processUmask,
+        preserve: this.preservePaths,
+        unlink: this.unlink,
+        cache: this.dirCache,
+        cwd: this.cwd,
+        mode: mode
+      })
+    } catch (er) {
+      return er
+    }
+  }
+
+  [LINK] (entry, linkpath, link) {
+    try {
+      fs[link + 'Sync'](linkpath, entry.absolute)
+      entry.resume()
+    } catch (er) {
+      return this[ONERROR](er, entry)
+    }
+  }
+}
+
+Unpack.Sync = UnpackSync
+module.exports = Unpack
diff --git a/node_modules/node-gyp/node_modules/tar/lib/update.js b/node_modules/node-gyp/node_modules/tar/lib/update.js
new file mode 100644
index 000000000..16c3e93ed
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/update.js
@@ -0,0 +1,36 @@
+'use strict'
+
+// tar -u
+
+const hlo = require('./high-level-opt.js')
+const r = require('./replace.js')
+// just call tar.r with the filter and mtimeCache
+
+const u = module.exports = (opt_, files, cb) => {
+  const opt = hlo(opt_)
+
+  if (!opt.file)
+    throw new TypeError('file is required')
+
+  if (opt.gzip)
+    throw new TypeError('cannot append to compressed archives')
+
+  if (!files || !Array.isArray(files) || !files.length)
+    throw new TypeError('no files or directories specified')
+
+  files = Array.from(files)
+
+  mtimeFilter(opt)
+  return r(opt, files, cb)
+}
+
+const mtimeFilter = opt => {
+  const filter = opt.filter
+
+  if (!opt.mtimeCache)
+    opt.mtimeCache = new Map()
+
+  opt.filter = filter ? (path, stat) =>
+    filter(path, stat) && !(opt.mtimeCache.get(path) > stat.mtime)
+    : (path, stat) => !(opt.mtimeCache.get(path) > stat.mtime)
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/warn-mixin.js b/node_modules/node-gyp/node_modules/tar/lib/warn-mixin.js
new file mode 100644
index 000000000..94a4b9b99
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/warn-mixin.js
@@ -0,0 +1,14 @@
+'use strict'
+module.exports = Base => class extends Base {
+  warn (msg, data) {
+    if (!this.strict)
+      this.emit('warn', msg, data)
+    else if (data instanceof Error)
+      this.emit('error', data)
+    else {
+      const er = new Error(msg)
+      er.data = data
+      this.emit('error', er)
+    }
+  }
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/winchars.js b/node_modules/node-gyp/node_modules/tar/lib/winchars.js
new file mode 100644
index 000000000..cf6ea0606
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/winchars.js
@@ -0,0 +1,23 @@
+'use strict'
+
+// When writing files on Windows, translate the characters to their
+// 0xf000 higher-encoded versions.
+
+const raw = [
+  '|',
+  '<',
+  '>',
+  '?',
+  ':'
+]
+
+const win = raw.map(char =>
+  String.fromCharCode(0xf000 + char.charCodeAt(0)))
+
+const toWin = new Map(raw.map((char, i) => [char, win[i]]))
+const toRaw = new Map(win.map((char, i) => [char, raw[i]]))
+
+module.exports = {
+  encode: s => raw.reduce((s, c) => s.split(c).join(toWin.get(c)), s),
+  decode: s => win.reduce((s, c) => s.split(c).join(toRaw.get(c)), s)
+}
diff --git a/node_modules/node-gyp/node_modules/tar/lib/write-entry.js b/node_modules/node-gyp/node_modules/tar/lib/write-entry.js
new file mode 100644
index 000000000..0c019006f
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/lib/write-entry.js
@@ -0,0 +1,422 @@
+'use strict'
+const Buffer = require('./buffer.js')
+const MiniPass = require('minipass')
+const Pax = require('./pax.js')
+const Header = require('./header.js')
+const ReadEntry = require('./read-entry.js')
+const fs = require('fs')
+const path = require('path')
+
+const types = require('./types.js')
+const maxReadSize = 16 * 1024 * 1024
+const PROCESS = Symbol('process')
+const FILE = Symbol('file')
+const DIRECTORY = Symbol('directory')
+const SYMLINK = Symbol('symlink')
+const HARDLINK = Symbol('hardlink')
+const HEADER = Symbol('header')
+const READ = Symbol('read')
+const LSTAT = Symbol('lstat')
+const ONLSTAT = Symbol('onlstat')
+const ONREAD = Symbol('onread')
+const ONREADLINK = Symbol('onreadlink')
+const OPENFILE = Symbol('openfile')
+const ONOPENFILE = Symbol('onopenfile')
+const CLOSE = Symbol('close')
+const MODE = Symbol('mode')
+const warner = require('./warn-mixin.js')
+const winchars = require('./winchars.js')
+
+const modeFix = require('./mode-fix.js')
+
+const WriteEntry = warner(class WriteEntry extends MiniPass {
+  constructor (p, opt) {
+    opt = opt || {}
+    super(opt)
+    if (typeof p !== 'string')
+      throw new TypeError('path is required')
+    this.path = p
+    // suppress atime, ctime, uid, gid, uname, gname
+    this.portable = !!opt.portable
+    // until node has builtin pwnam functions, this'll have to do
+    this.myuid = process.getuid && process.getuid()
+    this.myuser = process.env.USER || ''
+    this.maxReadSize = opt.maxReadSize || maxReadSize
+    this.linkCache = opt.linkCache || new Map()
+    this.statCache = opt.statCache || new Map()
+    this.preservePaths = !!opt.preservePaths
+    this.cwd = opt.cwd || process.cwd()
+    this.strict = !!opt.strict
+    this.noPax = !!opt.noPax
+    this.noMtime = !!opt.noMtime
+    this.mtime = opt.mtime || null
+
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+
+    if (!this.preservePaths && path.win32.isAbsolute(p)) {
+      // absolutes on posix are also absolutes on win32
+      // so we only need to test this one to get both
+      const parsed = path.win32.parse(p)
+      this.warn('stripping ' + parsed.root + ' from absolute path', p)
+      this.path = p.substr(parsed.root.length)
+    }
+
+    this.win32 = !!opt.win32 || process.platform === 'win32'
+    if (this.win32) {
+      this.path = winchars.decode(this.path.replace(/\\/g, '/'))
+      p = p.replace(/\\/g, '/')
+    }
+
+    this.absolute = opt.absolute || path.resolve(this.cwd, p)
+
+    if (this.path === '')
+      this.path = './'
+
+    if (this.statCache.has(this.absolute))
+      this[ONLSTAT](this.statCache.get(this.absolute))
+    else
+      this[LSTAT]()
+  }
+
+  [LSTAT] () {
+    fs.lstat(this.absolute, (er, stat) => {
+      if (er)
+        return this.emit('error', er)
+      this[ONLSTAT](stat)
+    })
+  }
+
+  [ONLSTAT] (stat) {
+    this.statCache.set(this.absolute, stat)
+    this.stat = stat
+    if (!stat.isFile())
+      stat.size = 0
+    this.type = getType(stat)
+    this.emit('stat', stat)
+    this[PROCESS]()
+  }
+
+  [PROCESS] () {
+    switch (this.type) {
+      case 'File': return this[FILE]()
+      case 'Directory': return this[DIRECTORY]()
+      case 'SymbolicLink': return this[SYMLINK]()
+      // unsupported types are ignored.
+      default: return this.end()
+    }
+  }
+
+  [MODE] (mode) {
+    return modeFix(mode, this.type === 'Directory')
+  }
+
+  [HEADER] () {
+    if (this.type === 'Directory' && this.portable)
+      this.noMtime = true
+
+    this.header = new Header({
+      path: this.path,
+      linkpath: this.linkpath,
+      // only the permissions and setuid/setgid/sticky bitflags
+      // not the higher-order bits that specify file type
+      mode: this[MODE](this.stat.mode),
+      uid: this.portable ? null : this.stat.uid,
+      gid: this.portable ? null : this.stat.gid,
+      size: this.stat.size,
+      mtime: this.noMtime ? null : this.mtime || this.stat.mtime,
+      type: this.type,
+      uname: this.portable ? null :
+        this.stat.uid === this.myuid ? this.myuser : '',
+      atime: this.portable ? null : this.stat.atime,
+      ctime: this.portable ? null : this.stat.ctime
+    })
+
+    if (this.header.encode() && !this.noPax)
+      this.write(new Pax({
+        atime: this.portable ? null : this.header.atime,
+        ctime: this.portable ? null : this.header.ctime,
+        gid: this.portable ? null : this.header.gid,
+        mtime: this.noMtime ? null : this.mtime || this.header.mtime,
+        path: this.path,
+        linkpath: this.linkpath,
+        size: this.header.size,
+        uid: this.portable ? null : this.header.uid,
+        uname: this.portable ? null : this.header.uname,
+        dev: this.portable ? null : this.stat.dev,
+        ino: this.portable ? null : this.stat.ino,
+        nlink: this.portable ? null : this.stat.nlink
+      }).encode())
+    this.write(this.header.block)
+  }
+
+  [DIRECTORY] () {
+    if (this.path.substr(-1) !== '/')
+      this.path += '/'
+    this.stat.size = 0
+    this[HEADER]()
+    this.end()
+  }
+
+  [SYMLINK] () {
+    fs.readlink(this.absolute, (er, linkpath) => {
+      if (er)
+        return this.emit('error', er)
+      this[ONREADLINK](linkpath)
+    })
+  }
+
+  [ONREADLINK] (linkpath) {
+    this.linkpath = linkpath
+    this[HEADER]()
+    this.end()
+  }
+
+  [HARDLINK] (linkpath) {
+    this.type = 'Link'
+    this.linkpath = path.relative(this.cwd, linkpath)
+    this.stat.size = 0
+    this[HEADER]()
+    this.end()
+  }
+
+  [FILE] () {
+    if (this.stat.nlink > 1) {
+      const linkKey = this.stat.dev + ':' + this.stat.ino
+      if (this.linkCache.has(linkKey)) {
+        const linkpath = this.linkCache.get(linkKey)
+        if (linkpath.indexOf(this.cwd) === 0)
+          return this[HARDLINK](linkpath)
+      }
+      this.linkCache.set(linkKey, this.absolute)
+    }
+
+    this[HEADER]()
+    if (this.stat.size === 0)
+      return this.end()
+
+    this[OPENFILE]()
+  }
+
+  [OPENFILE] () {
+    fs.open(this.absolute, 'r', (er, fd) => {
+      if (er)
+        return this.emit('error', er)
+      this[ONOPENFILE](fd)
+    })
+  }
+
+  [ONOPENFILE] (fd) {
+    const blockLen = 512 * Math.ceil(this.stat.size / 512)
+    const bufLen = Math.min(blockLen, this.maxReadSize)
+    const buf = Buffer.allocUnsafe(bufLen)
+    this[READ](fd, buf, 0, buf.length, 0, this.stat.size, blockLen)
+  }
+
+  [READ] (fd, buf, offset, length, pos, remain, blockRemain) {
+    fs.read(fd, buf, offset, length, pos, (er, bytesRead) => {
+      if (er)
+        return this[CLOSE](fd, _ => this.emit('error', er))
+      this[ONREAD](fd, buf, offset, length, pos, remain, blockRemain, bytesRead)
+    })
+  }
+
+  [CLOSE] (fd, cb) {
+    fs.close(fd, cb)
+  }
+
+  [ONREAD] (fd, buf, offset, length, pos, remain, blockRemain, bytesRead) {
+    if (bytesRead <= 0 && remain > 0) {
+      const er = new Error('encountered unexpected EOF')
+      er.path = this.absolute
+      er.syscall = 'read'
+      er.code = 'EOF'
+      this[CLOSE](fd, _ => _)
+      return this.emit('error', er)
+    }
+
+    if (bytesRead > remain) {
+      const er = new Error('did not encounter expected EOF')
+      er.path = this.absolute
+      er.syscall = 'read'
+      er.code = 'EOF'
+      this[CLOSE](fd, _ => _)
+      return this.emit('error', er)
+    }
+
+    // null out the rest of the buffer, if we could fit the block padding
+    if (bytesRead === remain) {
+      for (let i = bytesRead; i < length && bytesRead < blockRemain; i++) {
+        buf[i + offset] = 0
+        bytesRead ++
+        remain ++
+      }
+    }
+
+    const writeBuf = offset === 0 && bytesRead === buf.length ?
+      buf : buf.slice(offset, offset + bytesRead)
+    remain -= bytesRead
+    blockRemain -= bytesRead
+    pos += bytesRead
+    offset += bytesRead
+
+    this.write(writeBuf)
+
+    if (!remain) {
+      if (blockRemain)
+        this.write(Buffer.alloc(blockRemain))
+      this.end()
+      this[CLOSE](fd, _ => _)
+      return
+    }
+
+    if (offset >= length) {
+      buf = Buffer.allocUnsafe(length)
+      offset = 0
+    }
+    length = buf.length - offset
+    this[READ](fd, buf, offset, length, pos, remain, blockRemain)
+  }
+})
+
+class WriteEntrySync extends WriteEntry {
+  constructor (path, opt) {
+    super(path, opt)
+  }
+
+  [LSTAT] () {
+    this[ONLSTAT](fs.lstatSync(this.absolute))
+  }
+
+  [SYMLINK] () {
+    this[ONREADLINK](fs.readlinkSync(this.absolute))
+  }
+
+  [OPENFILE] () {
+    this[ONOPENFILE](fs.openSync(this.absolute, 'r'))
+  }
+
+  [READ] (fd, buf, offset, length, pos, remain, blockRemain) {
+    let threw = true
+    try {
+      const bytesRead = fs.readSync(fd, buf, offset, length, pos)
+      this[ONREAD](fd, buf, offset, length, pos, remain, blockRemain, bytesRead)
+      threw = false
+    } finally {
+      if (threw)
+        try { this[CLOSE](fd) } catch (er) {}
+    }
+  }
+
+  [CLOSE] (fd) {
+    fs.closeSync(fd)
+  }
+}
+
+const WriteEntryTar = warner(class WriteEntryTar extends MiniPass {
+  constructor (readEntry, opt) {
+    opt = opt || {}
+    super(opt)
+    this.preservePaths = !!opt.preservePaths
+    this.portable = !!opt.portable
+    this.strict = !!opt.strict
+    this.noPax = !!opt.noPax
+    this.noMtime = !!opt.noMtime
+
+    this.readEntry = readEntry
+    this.type = readEntry.type
+    if (this.type === 'Directory' && this.portable)
+      this.noMtime = true
+
+    this.path = readEntry.path
+    this.mode = this[MODE](readEntry.mode)
+    this.uid = this.portable ? null : readEntry.uid
+    this.gid = this.portable ? null : readEntry.gid
+    this.uname = this.portable ? null : readEntry.uname
+    this.gname = this.portable ? null : readEntry.gname
+    this.size = readEntry.size
+    this.mtime = this.noMtime ? null : opt.mtime || readEntry.mtime
+    this.atime = this.portable ? null : readEntry.atime
+    this.ctime = this.portable ? null : readEntry.ctime
+    this.linkpath = readEntry.linkpath
+
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+
+    if (path.isAbsolute(this.path) && !this.preservePaths) {
+      const parsed = path.parse(this.path)
+      this.warn(
+        'stripping ' + parsed.root + ' from absolute path',
+        this.path
+      )
+      this.path = this.path.substr(parsed.root.length)
+    }
+
+    this.remain = readEntry.size
+    this.blockRemain = readEntry.startBlockSize
+
+    this.header = new Header({
+      path: this.path,
+      linkpath: this.linkpath,
+      // only the permissions and setuid/setgid/sticky bitflags
+      // not the higher-order bits that specify file type
+      mode: this.mode,
+      uid: this.portable ? null : this.uid,
+      gid: this.portable ? null : this.gid,
+      size: this.size,
+      mtime: this.noMtime ? null : this.mtime,
+      type: this.type,
+      uname: this.portable ? null : this.uname,
+      atime: this.portable ? null : this.atime,
+      ctime: this.portable ? null : this.ctime
+    })
+
+    if (this.header.encode() && !this.noPax)
+      super.write(new Pax({
+        atime: this.portable ? null : this.atime,
+        ctime: this.portable ? null : this.ctime,
+        gid: this.portable ? null : this.gid,
+        mtime: this.noMtime ? null : this.mtime,
+        path: this.path,
+        linkpath: this.linkpath,
+        size: this.size,
+        uid: this.portable ? null : this.uid,
+        uname: this.portable ? null : this.uname,
+        dev: this.portable ? null : this.readEntry.dev,
+        ino: this.portable ? null : this.readEntry.ino,
+        nlink: this.portable ? null : this.readEntry.nlink
+      }).encode())
+
+    super.write(this.header.block)
+    readEntry.pipe(this)
+  }
+
+  [MODE] (mode) {
+    return modeFix(mode, this.type === 'Directory')
+  }
+
+  write (data) {
+    const writeLen = data.length
+    if (writeLen > this.blockRemain)
+      throw new Error('writing more to entry than is appropriate')
+    this.blockRemain -= writeLen
+    return super.write(data)
+  }
+
+  end () {
+    if (this.blockRemain)
+      this.write(Buffer.alloc(this.blockRemain))
+    return super.end()
+  }
+})
+
+WriteEntry.Sync = WriteEntrySync
+WriteEntry.Tar = WriteEntryTar
+
+const getType = stat =>
+  stat.isFile() ? 'File'
+  : stat.isDirectory() ? 'Directory'
+  : stat.isSymbolicLink() ? 'SymbolicLink'
+  : 'Unsupported'
+
+module.exports = WriteEntry
diff --git a/node_modules/node-gyp/node_modules/tar/package.json b/node_modules/node-gyp/node_modules/tar/package.json
new file mode 100644
index 000000000..4063f6912
--- /dev/null
+++ b/node_modules/node-gyp/node_modules/tar/package.json
@@ -0,0 +1,82 @@
+{
+  "_from": "tar@^4.4.12",
+  "_id": "tar@4.4.13",
+  "_inBundle": false,
+  "_integrity": "sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==",
+  "_location": "/node-gyp/tar",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "tar@^4.4.12",
+    "name": "tar",
+    "escapedName": "tar",
+    "rawSpec": "^4.4.12",
+    "saveSpec": null,
+    "fetchSpec": "^4.4.12"
+  },
+  "_requiredBy": [
+    "/node-gyp"
+  ],
+  "_resolved": "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
+  "_shasum": "43b364bc52888d555298637b10d60790254ab525",
+  "_spec": "tar@^4.4.12",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/node-gyp",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/npm/node-tar/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "chownr": "^1.1.1",
+    "fs-minipass": "^1.2.5",
+    "minipass": "^2.8.6",
+    "minizlib": "^1.2.1",
+    "mkdirp": "^0.5.0",
+    "safe-buffer": "^5.1.2",
+    "yallist": "^3.0.3"
+  },
+  "deprecated": false,
+  "description": "tar for node",
+  "devDependencies": {
+    "chmodr": "^1.2.0",
+    "end-of-stream": "^1.4.1",
+    "events-to-array": "^1.1.2",
+    "mutate-fs": "^2.1.1",
+    "rimraf": "^2.6.3",
+    "tap": "^14.6.5",
+    "tar-fs": "^1.16.3",
+    "tar-stream": "^1.6.2"
+  },
+  "engines": {
+    "node": ">=4.5"
+  },
+  "files": [
+    "index.js",
+    "lib/"
+  ],
+  "homepage": "https://github.com/npm/node-tar#readme",
+  "license": "ISC",
+  "name": "tar",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/node-tar.git"
+  },
+  "scripts": {
+    "bench": "for i in benchmarks/*/*.js; do echo $i; for j in {1..5}; do node $i || break; done; done",
+    "genparse": "node scripts/generate-parse-fixtures.js",
+    "postpublish": "git push origin --follow-tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap"
+  },
+  "tap": {
+    "coverage-map": "map.js",
+    "check-coverage": true
+  },
+  "version": "4.4.13"
+}
diff --git a/node_modules/pacote/node_modules/fs-minipass/LICENSE b/node_modules/pacote/node_modules/fs-minipass/LICENSE
new file mode 100644
index 000000000..19129e315
--- /dev/null
+++ b/node_modules/pacote/node_modules/fs-minipass/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/pacote/node_modules/fs-minipass/README.md b/node_modules/pacote/node_modules/fs-minipass/README.md
new file mode 100644
index 000000000..1e61241cf
--- /dev/null
+++ b/node_modules/pacote/node_modules/fs-minipass/README.md
@@ -0,0 +1,70 @@
+# fs-minipass
+
+Filesystem streams based on [minipass](http://npm.im/minipass).
+
+4 classes are exported:
+
+- ReadStream
+- ReadStreamSync
+- WriteStream
+- WriteStreamSync
+
+When using `ReadStreamSync`, all of the data is made available
+immediately upon consuming the stream.  Nothing is buffered in memory
+when the stream is constructed.  If the stream is piped to a writer,
+then it will synchronously `read()` and emit data into the writer as
+fast as the writer can consume it.  (That is, it will respect
+backpressure.)  If you call `stream.read()` then it will read the
+entire file and return the contents.
+
+When using `WriteStreamSync`, every write is flushed to the file
+synchronously.  If your writes all come in a single tick, then it'll
+write it all out in a single tick.  It's as synchronous as you are.
+
+The async versions work much like their node builtin counterparts,
+with the exception of introducing significantly less Stream machinery
+overhead.
+
+## USAGE
+
+It's just streams, you pipe them or read() them or write() to them.
+
+```js
+const fsm = require('fs-minipass')
+const readStream = new fsm.ReadStream('file.txt')
+const writeStream = new fsm.WriteStream('output.txt')
+writeStream.write('some file header or whatever\n')
+readStream.pipe(writeStream)
+```
+
+## ReadStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `readSize` The size of reads to do, defaults to 16MB
+- `size` The size of the file, if known.  Prevents zero-byte read()
+  call at the end.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+  closed when the file is done being read.
+
+## WriteStream(path, options)
+
+Path string is required, but somewhat irrelevant if an open file
+descriptor is passed in as an option.
+
+Options:
+
+- `fd` Pass in a numeric file descriptor, if the file is already open.
+- `mode` The mode to create the file with. Defaults to `0o666`.
+- `start` The position in the file to start reading.  If not
+  specified, then the file will start writing at position zero, and be
+  truncated by default.
+- `autoClose` Set to `false` to prevent the file descriptor from being
+  closed when the stream is ended.
+- `flags` Flags to use when opening the file.  Irrelevant if `fd` is
+  passed in, since file won't be opened in that case.  Defaults to
+  `'a'` if a `pos` is specified, or `'w'` otherwise.
diff --git a/node_modules/pacote/node_modules/fs-minipass/index.js b/node_modules/pacote/node_modules/fs-minipass/index.js
new file mode 100644
index 000000000..cd585a83c
--- /dev/null
+++ b/node_modules/pacote/node_modules/fs-minipass/index.js
@@ -0,0 +1,387 @@
+'use strict'
+const MiniPass = require('minipass')
+const EE = require('events').EventEmitter
+const fs = require('fs')
+
+// for writev
+const binding = process.binding('fs')
+const writeBuffers = binding.writeBuffers
+/* istanbul ignore next */
+const FSReqWrap = binding.FSReqWrap || binding.FSReqCallback
+
+const _autoClose = Symbol('_autoClose')
+const _close = Symbol('_close')
+const _ended = Symbol('_ended')
+const _fd = Symbol('_fd')
+const _finished = Symbol('_finished')
+const _flags = Symbol('_flags')
+const _flush = Symbol('_flush')
+const _handleChunk = Symbol('_handleChunk')
+const _makeBuf = Symbol('_makeBuf')
+const _mode = Symbol('_mode')
+const _needDrain = Symbol('_needDrain')
+const _onerror = Symbol('_onerror')
+const _onopen = Symbol('_onopen')
+const _onread = Symbol('_onread')
+const _onwrite = Symbol('_onwrite')
+const _open = Symbol('_open')
+const _path = Symbol('_path')
+const _pos = Symbol('_pos')
+const _queue = Symbol('_queue')
+const _read = Symbol('_read')
+const _readSize = Symbol('_readSize')
+const _reading = Symbol('_reading')
+const _remain = Symbol('_remain')
+const _size = Symbol('_size')
+const _write = Symbol('_write')
+const _writing = Symbol('_writing')
+const _defaultFlag = Symbol('_defaultFlag')
+
+class ReadStream extends MiniPass {
+  constructor (path, opt) {
+    opt = opt || {}
+    super(opt)
+
+    this.writable = false
+
+    if (typeof path !== 'string')
+      throw new TypeError('path must be a string')
+
+    this[_fd] = typeof opt.fd === 'number' ? opt.fd : null
+    this[_path] = path
+    this[_readSize] = opt.readSize || 16*1024*1024
+    this[_reading] = false
+    this[_size] = typeof opt.size === 'number' ? opt.size : Infinity
+    this[_remain] = this[_size]
+    this[_autoClose] = typeof opt.autoClose === 'boolean' ?
+      opt.autoClose : true
+
+    if (typeof this[_fd] === 'number')
+      this[_read]()
+    else
+      this[_open]()
+  }
+
+  get fd () { return this[_fd] }
+  get path () { return this[_path] }
+
+  write () {
+    throw new TypeError('this is a readable stream')
+  }
+
+  end () {
+    throw new TypeError('this is a readable stream')
+  }
+
+  [_open] () {
+    fs.open(this[_path], 'r', (er, fd) => this[_onopen](er, fd))
+  }
+
+  [_onopen] (er, fd) {
+    if (er)
+      this[_onerror](er)
+    else {
+      this[_fd] = fd
+      this.emit('open', fd)
+      this[_read]()
+    }
+  }
+
+  [_makeBuf] () {
+    return Buffer.allocUnsafe(Math.min(this[_readSize], this[_remain]))
+  }
+
+  [_read] () {
+    if (!this[_reading]) {
+      this[_reading] = true
+      const buf = this[_makeBuf]()
+      /* istanbul ignore if */
+      if (buf.length === 0) return process.nextTick(() => this[_onread](null, 0, buf))
+      fs.read(this[_fd], buf, 0, buf.length, null, (er, br, buf) =>
+        this[_onread](er, br, buf))
+    }
+  }
+
+  [_onread] (er, br, buf) {
+    this[_reading] = false
+    if (er)
+      this[_onerror](er)
+    else if (this[_handleChunk](br, buf))
+      this[_read]()
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      fs.close(this[_fd], _ => this.emit('close'))
+      this[_fd] = null
+    }
+  }
+
+  [_onerror] (er) {
+    this[_reading] = true
+    this[_close]()
+    this.emit('error', er)
+  }
+
+  [_handleChunk] (br, buf) {
+    let ret = false
+    // no effect if infinite
+    this[_remain] -= br
+    if (br > 0)
+      ret = super.write(br < buf.length ? buf.slice(0, br) : buf)
+
+    if (br === 0 || this[_remain] <= 0) {
+      ret = false
+      this[_close]()
+      super.end()
+    }
+
+    return ret
+  }
+
+  emit (ev, data) {
+    switch (ev) {
+      case 'prefinish':
+      case 'finish':
+        break
+
+      case 'drain':
+        if (typeof this[_fd] === 'number')
+          this[_read]()
+        break
+
+      default:
+        return super.emit(ev, data)
+    }
+  }
+}
+
+class ReadStreamSync extends ReadStream {
+  [_open] () {
+    let threw = true
+    try {
+      this[_onopen](null, fs.openSync(this[_path], 'r'))
+      threw = false
+    } finally {
+      if (threw)
+        this[_close]()
+    }
+  }
+
+  [_read] () {
+    let threw = true
+    try {
+      if (!this[_reading]) {
+        this[_reading] = true
+        do {
+          const buf = this[_makeBuf]()
+          /* istanbul ignore next */
+          const br = buf.length === 0 ? 0 : fs.readSync(this[_fd], buf, 0, buf.length, null)
+          if (!this[_handleChunk](br, buf))
+            break
+        } while (true)
+        this[_reading] = false
+      }
+      threw = false
+    } finally {
+      if (threw)
+        this[_close]()
+    }
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      try {
+        fs.closeSync(this[_fd])
+      } catch (er) {}
+      this[_fd] = null
+      this.emit('close')
+    }
+  }
+}
+
+class WriteStream extends EE {
+  constructor (path, opt) {
+    opt = opt || {}
+    super(opt)
+    this.readable = false
+    this[_writing] = false
+    this[_ended] = false
+    this[_needDrain] = false
+    this[_queue] = []
+    this[_path] = path
+    this[_fd] = typeof opt.fd === 'number' ? opt.fd : null
+    this[_mode] = opt.mode === undefined ? 0o666 : opt.mode
+    this[_pos] = typeof opt.start === 'number' ? opt.start : null
+    this[_autoClose] = typeof opt.autoClose === 'boolean' ?
+      opt.autoClose : true
+
+    // truncating makes no sense when writing into the middle
+    const defaultFlag = this[_pos] !== null ? 'r+' : 'w'
+    this[_defaultFlag] = opt.flags === undefined
+    this[_flags] = this[_defaultFlag] ? defaultFlag : opt.flags
+
+    if (this[_fd] === null)
+      this[_open]()
+  }
+
+  get fd () { return this[_fd] }
+  get path () { return this[_path] }
+
+  [_onerror] (er) {
+    this[_close]()
+    this[_writing] = true
+    this.emit('error', er)
+  }
+
+  [_open] () {
+    fs.open(this[_path], this[_flags], this[_mode],
+      (er, fd) => this[_onopen](er, fd))
+  }
+
+  [_onopen] (er, fd) {
+    if (this[_defaultFlag] &&
+        this[_flags] === 'r+' &&
+        er && er.code === 'ENOENT') {
+      this[_flags] = 'w'
+      this[_open]()
+    } else if (er)
+      this[_onerror](er)
+    else {
+      this[_fd] = fd
+      this.emit('open', fd)
+      this[_flush]()
+    }
+  }
+
+  end (buf, enc) {
+    if (buf)
+      this.write(buf, enc)
+
+    this[_ended] = true
+
+    // synthetic after-write logic, where drain/finish live
+    if (!this[_writing] && !this[_queue].length &&
+        typeof this[_fd] === 'number')
+      this[_onwrite](null, 0)
+  }
+
+  write (buf, enc) {
+    if (typeof buf === 'string')
+      buf = new Buffer(buf, enc)
+
+    if (this[_ended]) {
+      this.emit('error', new Error('write() after end()'))
+      return false
+    }
+
+    if (this[_fd] === null || this[_writing] || this[_queue].length) {
+      this[_queue].push(buf)
+      this[_needDrain] = true
+      return false
+    }
+
+    this[_writing] = true
+    this[_write](buf)
+    return true
+  }
+
+  [_write] (buf) {
+    fs.write(this[_fd], buf, 0, buf.length, this[_pos], (er, bw) =>
+      this[_onwrite](er, bw))
+  }
+
+  [_onwrite] (er, bw) {
+    if (er)
+      this[_onerror](er)
+    else {
+      if (this[_pos] !== null)
+        this[_pos] += bw
+      if (this[_queue].length)
+        this[_flush]()
+      else {
+        this[_writing] = false
+
+        if (this[_ended] && !this[_finished]) {
+          this[_finished] = true
+          this[_close]()
+          this.emit('finish')
+        } else if (this[_needDrain]) {
+          this[_needDrain] = false
+          this.emit('drain')
+        }
+      }
+    }
+  }
+
+  [_flush] () {
+    if (this[_queue].length === 0) {
+      if (this[_ended])
+        this[_onwrite](null, 0)
+    } else if (this[_queue].length === 1)
+      this[_write](this[_queue].pop())
+    else {
+      const iovec = this[_queue]
+      this[_queue] = []
+      writev(this[_fd], iovec, this[_pos],
+        (er, bw) => this[_onwrite](er, bw))
+    }
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      fs.close(this[_fd], _ => this.emit('close'))
+      this[_fd] = null
+    }
+  }
+}
+
+class WriteStreamSync extends WriteStream {
+  [_open] () {
+    let fd
+    try {
+      fd = fs.openSync(this[_path], this[_flags], this[_mode])
+    } catch (er) {
+      if (this[_defaultFlag] &&
+          this[_flags] === 'r+' &&
+          er && er.code === 'ENOENT') {
+        this[_flags] = 'w'
+        return this[_open]()
+      } else
+        throw er
+    }
+    this[_onopen](null, fd)
+  }
+
+  [_close] () {
+    if (this[_autoClose] && typeof this[_fd] === 'number') {
+      try {
+        fs.closeSync(this[_fd])
+      } catch (er) {}
+      this[_fd] = null
+      this.emit('close')
+    }
+  }
+
+  [_write] (buf) {
+    try {
+      this[_onwrite](null,
+        fs.writeSync(this[_fd], buf, 0, buf.length, this[_pos]))
+    } catch (er) {
+      this[_onwrite](er, 0)
+    }
+  }
+}
+
+const writev = (fd, iovec, pos, cb) => {
+  const done = (er, bw) => cb(er, bw, iovec)
+  const req = new FSReqWrap()
+  req.oncomplete = done
+  binding.writeBuffers(fd, iovec, pos, req)
+}
+
+exports.ReadStream = ReadStream
+exports.ReadStreamSync = ReadStreamSync
+
+exports.WriteStream = WriteStream
+exports.WriteStreamSync = WriteStreamSync
diff --git a/node_modules/pacote/node_modules/fs-minipass/package.json b/node_modules/pacote/node_modules/fs-minipass/package.json
new file mode 100644
index 000000000..8fbc81c81
--- /dev/null
+++ b/node_modules/pacote/node_modules/fs-minipass/package.json
@@ -0,0 +1,65 @@
+{
+  "_from": "fs-minipass@^1.2.5",
+  "_id": "fs-minipass@1.2.7",
+  "_inBundle": false,
+  "_integrity": "sha512-GWSSJGFy4e9GUeCcbIkED+bgAoFyj7XF1mV8rma3QW4NIqX9Kyx79N/PF61H5udOV3aY1IaMLs6pGbH71nlCTA==",
+  "_location": "/pacote/fs-minipass",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "fs-minipass@^1.2.5",
+    "name": "fs-minipass",
+    "escapedName": "fs-minipass",
+    "rawSpec": "^1.2.5",
+    "saveSpec": null,
+    "fetchSpec": "^1.2.5"
+  },
+  "_requiredBy": [
+    "/pacote/tar"
+  ],
+  "_resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-1.2.7.tgz",
+  "_shasum": "ccff8570841e7fe4265693da88936c55aed7f7c7",
+  "_spec": "fs-minipass@^1.2.5",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/pacote/node_modules/tar",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/npm/fs-minipass/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "minipass": "^2.6.0"
+  },
+  "deprecated": false,
+  "description": "fs read and write streams based on minipass",
+  "devDependencies": {
+    "mutate-fs": "^2.0.1",
+    "tap": "^14.6.4"
+  },
+  "files": [
+    "index.js"
+  ],
+  "homepage": "https://github.com/npm/fs-minipass#readme",
+  "keywords": [],
+  "license": "ISC",
+  "main": "index.js",
+  "name": "fs-minipass",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/fs-minipass.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --follow-tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap"
+  },
+  "tap": {
+    "check-coverage": true
+  },
+  "version": "1.2.7"
+}
diff --git a/node_modules/pacote/node_modules/minizlib/LICENSE b/node_modules/pacote/node_modules/minizlib/LICENSE
new file mode 100644
index 000000000..ffce7383f
--- /dev/null
+++ b/node_modules/pacote/node_modules/minizlib/LICENSE
@@ -0,0 +1,26 @@
+Minizlib was created by Isaac Z. Schlueter.
+It is a derivative work of the Node.js project.
+
+"""
+Copyright Isaac Z. Schlueter and Contributors
+Copyright Node.js contributors. All rights reserved.
+Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+
+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/node_modules/pacote/node_modules/minizlib/README.md b/node_modules/pacote/node_modules/minizlib/README.md
new file mode 100644
index 000000000..4097b8522
--- /dev/null
+++ b/node_modules/pacote/node_modules/minizlib/README.md
@@ -0,0 +1,53 @@
+# minizlib
+
+A fast zlib stream built on [minipass](http://npm.im/minipass) and
+Node.js's zlib binding.
+
+This module was created to serve the needs of
+[node-tar](http://npm.im/tar) and
+[minipass-fetch](http://npm.im/minipass-fetch).
+
+Brotli is supported in versions of node with a Brotli binding.
+
+## How does this differ from the streams in `require('zlib')`?
+
+First, there are no convenience methods to compress or decompress a
+buffer.  If you want those, use the built-in `zlib` module.  This is
+only streams.  That being said, Minipass streams to make it fairly easy to
+use as one-liners: `new zlib.Deflate().end(data).read()` will return the
+deflate compressed result.
+
+This module compresses and decompresses the data as fast as you feed
+it in.  It is synchronous, and runs on the main process thread.  Zlib
+and Brotli operations can be high CPU, but they're very fast, and doing it
+this way means much less bookkeeping and artificial deferral.
+
+Node's built in zlib streams are built on top of `stream.Transform`.
+They do the maximally safe thing with respect to consistent
+asynchrony, buffering, and backpressure.
+
+See [Minipass](http://npm.im/minipass) for more on the differences between
+Node.js core streams and Minipass streams, and the convenience methods
+provided by that class.
+
+## Classes
+
+- Deflate
+- Inflate
+- Gzip
+- Gunzip
+- DeflateRaw
+- InflateRaw
+- Unzip
+- BrotliCompress (Node v10 and higher)
+- BrotliDecompress (Node v10 and higher)
+
+## USAGE
+
+```js
+const zlib = require('minizlib')
+const input = sourceOfCompressedData()
+const decode = new zlib.BrotliDecompress()
+const output = whereToWriteTheDecodedData()
+input.pipe(decode).pipe(output)
+```
diff --git a/node_modules/pacote/node_modules/minizlib/constants.js b/node_modules/pacote/node_modules/minizlib/constants.js
new file mode 100644
index 000000000..641ebc731
--- /dev/null
+++ b/node_modules/pacote/node_modules/minizlib/constants.js
@@ -0,0 +1,115 @@
+// Update with any zlib constants that are added or changed in the future.
+// Node v6 didn't export this, so we just hard code the version and rely
+// on all the other hard-coded values from zlib v4736.  When node v6
+// support drops, we can just export the realZlibConstants object.
+const realZlibConstants = require('zlib').constants ||
+  /* istanbul ignore next */ { ZLIB_VERNUM: 4736 }
+
+module.exports = Object.freeze(Object.assign(Object.create(null), {
+  Z_NO_FLUSH: 0,
+  Z_PARTIAL_FLUSH: 1,
+  Z_SYNC_FLUSH: 2,
+  Z_FULL_FLUSH: 3,
+  Z_FINISH: 4,
+  Z_BLOCK: 5,
+  Z_OK: 0,
+  Z_STREAM_END: 1,
+  Z_NEED_DICT: 2,
+  Z_ERRNO: -1,
+  Z_STREAM_ERROR: -2,
+  Z_DATA_ERROR: -3,
+  Z_MEM_ERROR: -4,
+  Z_BUF_ERROR: -5,
+  Z_VERSION_ERROR: -6,
+  Z_NO_COMPRESSION: 0,
+  Z_BEST_SPEED: 1,
+  Z_BEST_COMPRESSION: 9,
+  Z_DEFAULT_COMPRESSION: -1,
+  Z_FILTERED: 1,
+  Z_HUFFMAN_ONLY: 2,
+  Z_RLE: 3,
+  Z_FIXED: 4,
+  Z_DEFAULT_STRATEGY: 0,
+  DEFLATE: 1,
+  INFLATE: 2,
+  GZIP: 3,
+  GUNZIP: 4,
+  DEFLATERAW: 5,
+  INFLATERAW: 6,
+  UNZIP: 7,
+  BROTLI_DECODE: 8,
+  BROTLI_ENCODE: 9,
+  Z_MIN_WINDOWBITS: 8,
+  Z_MAX_WINDOWBITS: 15,
+  Z_DEFAULT_WINDOWBITS: 15,
+  Z_MIN_CHUNK: 64,
+  Z_MAX_CHUNK: Infinity,
+  Z_DEFAULT_CHUNK: 16384,
+  Z_MIN_MEMLEVEL: 1,
+  Z_MAX_MEMLEVEL: 9,
+  Z_DEFAULT_MEMLEVEL: 8,
+  Z_MIN_LEVEL: -1,
+  Z_MAX_LEVEL: 9,
+  Z_DEFAULT_LEVEL: -1,
+  BROTLI_OPERATION_PROCESS: 0,
+  BROTLI_OPERATION_FLUSH: 1,
+  BROTLI_OPERATION_FINISH: 2,
+  BROTLI_OPERATION_EMIT_METADATA: 3,
+  BROTLI_MODE_GENERIC: 0,
+  BROTLI_MODE_TEXT: 1,
+  BROTLI_MODE_FONT: 2,
+  BROTLI_DEFAULT_MODE: 0,
+  BROTLI_MIN_QUALITY: 0,
+  BROTLI_MAX_QUALITY: 11,
+  BROTLI_DEFAULT_QUALITY: 11,
+  BROTLI_MIN_WINDOW_BITS: 10,
+  BROTLI_MAX_WINDOW_BITS: 24,
+  BROTLI_LARGE_MAX_WINDOW_BITS: 30,
+  BROTLI_DEFAULT_WINDOW: 22,
+  BROTLI_MIN_INPUT_BLOCK_BITS: 16,
+  BROTLI_MAX_INPUT_BLOCK_BITS: 24,
+  BROTLI_PARAM_MODE: 0,
+  BROTLI_PARAM_QUALITY: 1,
+  BROTLI_PARAM_LGWIN: 2,
+  BROTLI_PARAM_LGBLOCK: 3,
+  BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING: 4,
+  BROTLI_PARAM_SIZE_HINT: 5,
+  BROTLI_PARAM_LARGE_WINDOW: 6,
+  BROTLI_PARAM_NPOSTFIX: 7,
+  BROTLI_PARAM_NDIRECT: 8,
+  BROTLI_DECODER_RESULT_ERROR: 0,
+  BROTLI_DECODER_RESULT_SUCCESS: 1,
+  BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT: 2,
+  BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT: 3,
+  BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION: 0,
+  BROTLI_DECODER_PARAM_LARGE_WINDOW: 1,
+  BROTLI_DECODER_NO_ERROR: 0,
+  BROTLI_DECODER_SUCCESS: 1,
+  BROTLI_DECODER_NEEDS_MORE_INPUT: 2,
+  BROTLI_DECODER_NEEDS_MORE_OUTPUT: 3,
+  BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE: -1,
+  BROTLI_DECODER_ERROR_FORMAT_RESERVED: -2,
+  BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE: -3,
+  BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET: -4,
+  BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME: -5,
+  BROTLI_DECODER_ERROR_FORMAT_CL_SPACE: -6,
+  BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE: -7,
+  BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT: -8,
+  BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1: -9,
+  BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2: -10,
+  BROTLI_DECODER_ERROR_FORMAT_TRANSFORM: -11,
+  BROTLI_DECODER_ERROR_FORMAT_DICTIONARY: -12,
+  BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS: -13,
+  BROTLI_DECODER_ERROR_FORMAT_PADDING_1: -14,
+  BROTLI_DECODER_ERROR_FORMAT_PADDING_2: -15,
+  BROTLI_DECODER_ERROR_FORMAT_DISTANCE: -16,
+  BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET: -19,
+  BROTLI_DECODER_ERROR_INVALID_ARGUMENTS: -20,
+  BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: -21,
+  BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS: -22,
+  BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP: -25,
+  BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1: -26,
+  BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2: -27,
+  BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES: -30,
+  BROTLI_DECODER_ERROR_UNREACHABLE: -31,
+}, realZlibConstants))
diff --git a/node_modules/pacote/node_modules/minizlib/index.js b/node_modules/pacote/node_modules/minizlib/index.js
new file mode 100644
index 000000000..295047b9c
--- /dev/null
+++ b/node_modules/pacote/node_modules/minizlib/index.js
@@ -0,0 +1,320 @@
+'use strict'
+
+const assert = require('assert')
+const Buffer = require('buffer').Buffer
+const realZlib = require('zlib')
+
+const constants = exports.constants = require('./constants.js')
+const Minipass = require('minipass')
+
+const OriginalBufferConcat = Buffer.concat
+
+class ZlibError extends Error {
+  constructor (err) {
+    super('zlib: ' + err.message)
+    this.code = err.code
+    this.errno = err.errno
+    /* istanbul ignore if */
+    if (!this.code)
+      this.code = 'ZLIB_ERROR'
+
+    this.message = 'zlib: ' + err.message
+    Error.captureStackTrace(this, this.constructor)
+  }
+
+  get name () {
+    return 'ZlibError'
+  }
+}
+
+// the Zlib class they all inherit from
+// This thing manages the queue of requests, and returns
+// true or false if there is anything in the queue when
+// you call the .write() method.
+const _opts = Symbol('opts')
+const _flushFlag = Symbol('flushFlag')
+const _finishFlushFlag = Symbol('finishFlushFlag')
+const _fullFlushFlag = Symbol('fullFlushFlag')
+const _handle = Symbol('handle')
+const _onError = Symbol('onError')
+const _sawError = Symbol('sawError')
+const _level = Symbol('level')
+const _strategy = Symbol('strategy')
+const _ended = Symbol('ended')
+const _defaultFullFlush = Symbol('_defaultFullFlush')
+
+class ZlibBase extends Minipass {
+  constructor (opts, mode) {
+    if (!opts || typeof opts !== 'object')
+      throw new TypeError('invalid options for ZlibBase constructor')
+
+    super(opts)
+    this[_ended] = false
+    this[_opts] = opts
+
+    this[_flushFlag] = opts.flush
+    this[_finishFlushFlag] = opts.finishFlush
+    // this will throw if any options are invalid for the class selected
+    try {
+      this[_handle] = new realZlib[mode](opts)
+    } catch (er) {
+      // make sure that all errors get decorated properly
+      throw new ZlibError(er)
+    }
+
+    this[_onError] = (err) => {
+      this[_sawError] = true
+      // there is no way to cleanly recover.
+      // continuing only obscures problems.
+      this.close()
+      this.emit('error', err)
+    }
+
+    this[_handle].on('error', er => this[_onError](new ZlibError(er)))
+    this.once('end', () => this.close)
+  }
+
+  close () {
+    if (this[_handle]) {
+      this[_handle].close()
+      this[_handle] = null
+      this.emit('close')
+    }
+  }
+
+  reset () {
+    if (!this[_sawError]) {
+      assert(this[_handle], 'zlib binding closed')
+      return this[_handle].reset()
+    }
+  }
+
+  flush (flushFlag) {
+    if (this.ended)
+      return
+
+    if (typeof flushFlag !== 'number')
+      flushFlag = this[_fullFlushFlag]
+    this.write(Object.assign(Buffer.alloc(0), { [_flushFlag]: flushFlag }))
+  }
+
+  end (chunk, encoding, cb) {
+    if (chunk)
+      this.write(chunk, encoding)
+    this.flush(this[_finishFlushFlag])
+    this[_ended] = true
+    return super.end(null, null, cb)
+  }
+
+  get ended () {
+    return this[_ended]
+  }
+
+  write (chunk, encoding, cb) {
+    // process the chunk using the sync process
+    // then super.write() all the outputted chunks
+    if (typeof encoding === 'function')
+      cb = encoding, encoding = 'utf8'
+
+    if (typeof chunk === 'string')
+      chunk = Buffer.from(chunk, encoding)
+
+    if (this[_sawError])
+      return
+    assert(this[_handle], 'zlib binding closed')
+
+    // _processChunk tries to .close() the native handle after it's done, so we
+    // intercept that by temporarily making it a no-op.
+    const nativeHandle = this[_handle]._handle
+    const originalNativeClose = nativeHandle.close
+    nativeHandle.close = () => {}
+    const originalClose = this[_handle].close
+    this[_handle].close = () => {}
+    // It also calls `Buffer.concat()` at the end, which may be convenient
+    // for some, but which we are not interested in as it slows us down.
+    Buffer.concat = (args) => args
+    let result
+    try {
+      const flushFlag = typeof chunk[_flushFlag] === 'number'
+        ? chunk[_flushFlag] : this[_flushFlag]
+      result = this[_handle]._processChunk(chunk, flushFlag)
+      // if we don't throw, reset it back how it was
+      Buffer.concat = OriginalBufferConcat
+    } catch (err) {
+      // or if we do, put Buffer.concat() back before we emit error
+      // Error events call into user code, which may call Buffer.concat()
+      Buffer.concat = OriginalBufferConcat
+      this[_onError](new ZlibError(err))
+    } finally {
+      if (this[_handle]) {
+        // Core zlib resets `_handle` to null after attempting to close the
+        // native handle. Our no-op handler prevented actual closure, but we
+        // need to restore the `._handle` property.
+        this[_handle]._handle = nativeHandle
+        nativeHandle.close = originalNativeClose
+        this[_handle].close = originalClose
+        // `_processChunk()` adds an 'error' listener. If we don't remove it
+        // after each call, these handlers start piling up.
+        this[_handle].removeAllListeners('error')
+      }
+    }
+
+    let writeReturn
+    if (result) {
+      if (Array.isArray(result) && result.length > 0) {
+        // The first buffer is always `handle._outBuffer`, which would be
+        // re-used for later invocations; so, we always have to copy that one.
+        writeReturn = super.write(Buffer.from(result[0]))
+        for (let i = 1; i < result.length; i++) {
+          writeReturn = super.write(result[i])
+        }
+      } else {
+        writeReturn = super.write(Buffer.from(result))
+      }
+    }
+
+    if (cb)
+      cb()
+    return writeReturn
+  }
+}
+
+class Zlib extends ZlibBase {
+  constructor (opts, mode) {
+    opts = opts || {}
+
+    opts.flush = opts.flush || constants.Z_NO_FLUSH
+    opts.finishFlush = opts.finishFlush || constants.Z_FINISH
+    super(opts, mode)
+
+    this[_fullFlushFlag] = constants.Z_FULL_FLUSH
+    this[_level] = opts.level
+    this[_strategy] = opts.strategy
+  }
+
+  params (level, strategy) {
+    if (this[_sawError])
+      return
+
+    if (!this[_handle])
+      throw new Error('cannot switch params when binding is closed')
+
+    // no way to test this without also not supporting params at all
+    /* istanbul ignore if */
+    if (!this[_handle].params)
+      throw new Error('not supported in this implementation')
+
+    if (this[_level] !== level || this[_strategy] !== strategy) {
+      this.flush(constants.Z_SYNC_FLUSH)
+      assert(this[_handle], 'zlib binding closed')
+      // .params() calls .flush(), but the latter is always async in the
+      // core zlib. We override .flush() temporarily to intercept that and
+      // flush synchronously.
+      const origFlush = this[_handle].flush
+      this[_handle].flush = (flushFlag, cb) => {
+        this.flush(flushFlag)
+        cb()
+      }
+      try {
+        this[_handle].params(level, strategy)
+      } finally {
+        this[_handle].flush = origFlush
+      }
+      /* istanbul ignore else */
+      if (this[_handle]) {
+        this[_level] = level
+        this[_strategy] = strategy
+      }
+    }
+  }
+}
+
+// minimal 2-byte header
+class Deflate extends Zlib {
+  constructor (opts) {
+    super(opts, 'Deflate')
+  }
+}
+
+class Inflate extends Zlib {
+  constructor (opts) {
+    super(opts, 'Inflate')
+  }
+}
+
+// gzip - bigger header, same deflate compression
+class Gzip extends Zlib {
+  constructor (opts) {
+    super(opts, 'Gzip')
+  }
+}
+
+class Gunzip extends Zlib {
+  constructor (opts) {
+    super(opts, 'Gunzip')
+  }
+}
+
+// raw - no header
+class DeflateRaw extends Zlib {
+  constructor (opts) {
+    super(opts, 'DeflateRaw')
+  }
+}
+
+class InflateRaw extends Zlib {
+  constructor (opts) {
+    super(opts, 'InflateRaw')
+  }
+}
+
+// auto-detect header.
+class Unzip extends Zlib {
+  constructor (opts) {
+    super(opts, 'Unzip')
+  }
+}
+
+class Brotli extends ZlibBase {
+  constructor (opts, mode) {
+    opts = opts || {}
+
+    opts.flush = opts.flush || constants.BROTLI_OPERATION_PROCESS
+    opts.finishFlush = opts.finishFlush || constants.BROTLI_OPERATION_FINISH
+
+    super(opts, mode)
+
+    this[_fullFlushFlag] = constants.BROTLI_OPERATION_FLUSH
+  }
+}
+
+class BrotliCompress extends Brotli {
+  constructor (opts) {
+    super(opts, 'BrotliCompress')
+  }
+}
+
+class BrotliDecompress extends Brotli {
+  constructor (opts) {
+    super(opts, 'BrotliDecompress')
+  }
+}
+
+exports.Deflate = Deflate
+exports.Inflate = Inflate
+exports.Gzip = Gzip
+exports.Gunzip = Gunzip
+exports.DeflateRaw = DeflateRaw
+exports.InflateRaw = InflateRaw
+exports.Unzip = Unzip
+/* istanbul ignore else */
+if (typeof realZlib.BrotliCompress === 'function') {
+  exports.BrotliCompress = BrotliCompress
+  exports.BrotliDecompress = BrotliDecompress
+} else {
+  exports.BrotliCompress = exports.BrotliDecompress = class {
+    constructor () {
+      throw new Error('Brotli is not supported in this version of Node.js')
+    }
+  }
+}
diff --git a/node_modules/pacote/node_modules/minizlib/package.json b/node_modules/pacote/node_modules/minizlib/package.json
new file mode 100644
index 000000000..354447bd1
--- /dev/null
+++ b/node_modules/pacote/node_modules/minizlib/package.json
@@ -0,0 +1,71 @@
+{
+  "_from": "minizlib@^1.2.1",
+  "_id": "minizlib@1.3.3",
+  "_inBundle": false,
+  "_integrity": "sha512-6ZYMOEnmVsdCeTJVE0W9ZD+pVnE8h9Hma/iOwwRDsdQoePpoX56/8B6z3P9VNwppJuBKNRuFDRNRqRWexT9G9Q==",
+  "_location": "/pacote/minizlib",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "minizlib@^1.2.1",
+    "name": "minizlib",
+    "escapedName": "minizlib",
+    "rawSpec": "^1.2.1",
+    "saveSpec": null,
+    "fetchSpec": "^1.2.1"
+  },
+  "_requiredBy": [
+    "/pacote/tar"
+  ],
+  "_resolved": "https://registry.npmjs.org/minizlib/-/minizlib-1.3.3.tgz",
+  "_shasum": "2290de96818a34c29551c8a8d301216bd65a861d",
+  "_spec": "minizlib@^1.2.1",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/pacote/node_modules/tar",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/minizlib/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "minipass": "^2.9.0"
+  },
+  "deprecated": false,
+  "description": "A small fast zlib stream built on [minipass](http://npm.im/minipass) and Node.js's zlib binding.",
+  "devDependencies": {
+    "tap": "^12.0.1"
+  },
+  "files": [
+    "index.js",
+    "constants.js"
+  ],
+  "homepage": "https://github.com/isaacs/minizlib#readme",
+  "keywords": [
+    "zlib",
+    "gzip",
+    "gunzip",
+    "deflate",
+    "inflate",
+    "compression",
+    "zip",
+    "unzip"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "minizlib",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/minizlib.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --all; git push origin --tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap test/*.js --100 -J"
+  },
+  "version": "1.3.3"
+}
diff --git a/node_modules/pacote/node_modules/tar/LICENSE b/node_modules/pacote/node_modules/tar/LICENSE
new file mode 100644
index 000000000..19129e315
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/pacote/node_modules/tar/README.md b/node_modules/pacote/node_modules/tar/README.md
new file mode 100644
index 000000000..034e4865c
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/README.md
@@ -0,0 +1,954 @@
+# node-tar
+
+[![Build Status](https://travis-ci.org/npm/node-tar.svg?branch=master)](https://travis-ci.org/npm/node-tar)
+
+[Fast](./benchmarks) and full-featured Tar for Node.js
+
+The API is designed to mimic the behavior of `tar(1)` on unix systems.
+If you are familiar with how tar works, most of this will hopefully be
+straightforward for you.  If not, then hopefully this module can teach
+you useful unix skills that may come in handy someday :)
+
+## Background
+
+A "tar file" or "tarball" is an archive of file system entries
+(directories, files, links, etc.)  The name comes from "tape archive".
+If you run `man tar` on almost any Unix command line, you'll learn
+quite a bit about what it can do, and its history.
+
+Tar has 5 main top-level commands:
+
+* `c` Create an archive
+* `r` Replace entries within an archive
+* `u` Update entries within an archive (ie, replace if they're newer)
+* `t` List out the contents of an archive
+* `x` Extract an archive to disk
+
+The other flags and options modify how this top level function works.
+
+## High-Level API
+
+These 5 functions are the high-level API.  All of them have a
+single-character name (for unix nerds familiar with `tar(1)`) as well
+as a long name (for everyone else).
+
+All the high-level functions take the following arguments, all three
+of which are optional and may be omitted.
+
+1. `options` - An optional object specifying various options
+2. `paths` - An array of paths to add or extract
+3. `callback` - Called when the command is completed, if async.  (If
+   sync or no file specified, providing a callback throws a
+   `TypeError`.)
+
+If the command is sync (ie, if `options.sync=true`), then the
+callback is not allowed, since the action will be completed immediately.
+
+If a `file` argument is specified, and the command is async, then a
+`Promise` is returned.  In this case, if async, a callback may be
+provided which is called when the command is completed.
+
+If a `file` option is not specified, then a stream is returned.  For
+`create`, this is a readable stream of the generated archive.  For
+`list` and `extract` this is a writable stream that an archive should
+be written into.  If a file is not specified, then a callback is not
+allowed, because you're already getting a stream to work with.
+
+`replace` and `update` only work on existing archives, and so require
+a `file` argument.
+
+Sync commands without a file argument return a stream that acts on its
+input immediately in the same tick.  For readable streams, this means
+that all of the data is immediately available by calling
+`stream.read()`.  For writable streams, it will be acted upon as soon
+as it is provided, but this can be at any time.
+
+### Warnings
+
+Some things cause tar to emit a warning, but should usually not cause
+the entire operation to fail.  There are three ways to handle
+warnings:
+
+1. **Ignore them** (default) Invalid entries won't be put in the
+   archive, and invalid entries won't be unpacked.  This is usually
+   fine, but can hide failures that you might care about.
+2. **Notice them**  Add an `onwarn` function to the options, or listen
+   to the `'warn'` event on any tar stream.  The function will get
+   called as `onwarn(message, data)`.  Handle as appropriate.
+3. **Explode them.**  Set `strict: true` in the options object, and
+   `warn` messages will be emitted as `'error'` events instead.  If
+   there's no `error` handler, this causes the program to crash.  If
+   used with a promise-returning/callback-taking method, then it'll
+   send the error to the promise/callback.
+
+### Examples
+
+The API mimics the `tar(1)` command line functionality, with aliases
+for more human-readable option and function names.  The goal is that
+if you know how to use `tar(1)` in Unix, then you know how to use
+`require('tar')` in JavaScript.
+
+To replicate `tar czf my-tarball.tgz files and folders`, you'd do:
+
+```js
+tar.c(
+  {
+    gzip: <true|gzip options>,
+    file: 'my-tarball.tgz'
+  },
+  ['some', 'files', 'and', 'folders']
+).then(_ => { .. tarball has been created .. })
+```
+
+To replicate `tar cz files and folders > my-tarball.tgz`, you'd do:
+
+```js
+tar.c( // or tar.create
+  {
+    gzip: <true|gzip options>
+  },
+  ['some', 'files', 'and', 'folders']
+).pipe(fs.createWriteStream('my-tarball.tgz'))
+```
+
+To replicate `tar xf my-tarball.tgz` you'd do:
+
+```js
+tar.x(  // or tar.extract(
+  {
+    file: 'my-tarball.tgz'
+  }
+).then(_=> { .. tarball has been dumped in cwd .. })
+```
+
+To replicate `cat my-tarball.tgz | tar x -C some-dir --strip=1`:
+
+```js
+fs.createReadStream('my-tarball.tgz').pipe(
+  tar.x({
+    strip: 1,
+    C: 'some-dir' // alias for cwd:'some-dir', also ok
+  })
+)
+```
+
+To replicate `tar tf my-tarball.tgz`, do this:
+
+```js
+tar.t({
+  file: 'my-tarball.tgz',
+  onentry: entry => { .. do whatever with it .. }
+})
+```
+
+To replicate `cat my-tarball.tgz | tar t` do:
+
+```js
+fs.createReadStream('my-tarball.tgz')
+  .pipe(tar.t())
+  .on('entry', entry => { .. do whatever with it .. })
+```
+
+To do anything synchronous, add `sync: true` to the options.  Note
+that sync functions don't take a callback and don't return a promise.
+When the function returns, it's already done.  Sync methods without a
+file argument return a sync stream, which flushes immediately.  But,
+of course, it still won't be done until you `.end()` it.
+
+To filter entries, add `filter: <function>` to the options.
+Tar-creating methods call the filter with `filter(path, stat)`.
+Tar-reading methods (including extraction) call the filter with
+`filter(path, entry)`.  The filter is called in the `this`-context of
+the `Pack` or `Unpack` stream object.
+
+The arguments list to `tar t` and `tar x` specify a list of filenames
+to extract or list, so they're equivalent to a filter that tests if
+the file is in the list.
+
+For those who _aren't_ fans of tar's single-character command names:
+
+```
+tar.c === tar.create
+tar.r === tar.replace (appends to archive, file is required)
+tar.u === tar.update (appends if newer, file is required)
+tar.x === tar.extract
+tar.t === tar.list
+```
+
+Keep reading for all the command descriptions and options, as well as
+the low-level API that they are built on.
+
+### tar.c(options, fileList, callback) [alias: tar.create]
+
+Create a tarball archive.
+
+The `fileList` is an array of paths to add to the tarball.  Adding a
+directory also adds its children recursively.
+
+An entry in `fileList` that starts with an `@` symbol is a tar archive
+whose entries will be added.  To add a file that starts with `@`,
+prepend it with `./`.
+
+The following options are supported:
+
+- `file` Write the tarball archive to the specified filename.  If this
+  is specified, then the callback will be fired when the file has been
+  written, and a promise will be returned that resolves when the file
+  is written.  If a filename is not specified, then a Readable Stream
+  will be returned which will emit the file data. [Alias: `f`]
+- `sync` Act synchronously.  If this is set, then any provided file
+  will be fully written after the call to `tar.c`.  If this is set,
+  and a file is not provided, then the resulting stream will already
+  have the data ready to `read` or `emit('data')` as soon as you
+  request it.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.  [Alias: `C`]
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()` [Alias: `z`]
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths. [Alias: `P`]
+- `mode` The mode to set on the created file archive
+- `noDirRecurse` Do not recursively archive the contents of
+  directories. [Alias: `n`]
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such. [Alias: `L`, `h`]
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+  [Alias: `m`, `no-mtime`]
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+
+The following options are mostly internal, but can be modified in some
+advanced use cases, such as re-using caches between runs.
+
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `readdirCache` A Map object that caches calls to `readdir`.
+- `jobs` A number specifying how many concurrent jobs to run.
+  Defaults to 4.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+
+### tar.x(options, fileList, callback) [alias: tar.extract]
+
+Extract a tarball archive.
+
+The `fileList` is an array of paths to extract from the tarball.  If
+no paths are provided, then all the entries are extracted.
+
+If the archive is gzipped, then tar will detect this and unzip it.
+
+Note that all directories that are created will be forced to be
+writable, readable, and listable by their owner, to avoid cases where
+a directory prevents extraction of child entries by virtue of its
+mode.
+
+Most extraction errors will cause a `warn` event to be emitted.  If
+the `cwd` is missing, or not a directory, then the extraction will
+fail completely.
+
+The following options are supported:
+
+- `cwd` Extract files relative to the specified directory.  Defaults
+  to `process.cwd()`.  If provided, this must exist and must be a
+  directory. [Alias: `C`]
+- `file` The archive file to extract.  If not specified, then a
+  Writable stream is returned where the archive data should be
+  written. [Alias: `f`]
+- `sync` Create files and directories synchronously.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being unpacked.  Return `true` to unpack the entry from the
+  archive, or `false` to skip it.
+- `newer` Set to true to keep the existing file on disk if it's newer
+  than the file in the archive. [Alias: `keep-newer`,
+  `keep-newer-files`]
+- `keep` Do not overwrite existing files.  In particular, if a file
+  appears more than once in an archive, later copies will not
+  overwrite earlier copies. [Alias: `k`, `keep-existing`]
+- `preservePaths` Allow absolute paths, paths containing `..`, and
+  extracting through symbolic links.  By default, `/` is stripped from
+  absolute paths, `..` paths are not extracted, and any file whose
+  location would be modified by a symbolic link is not extracted.
+  [Alias: `P`]
+- `unlink` Unlink files before creating them.  Without this option,
+  tar overwrites existing files, which preserves existing hardlinks.
+  With this option, existing hardlinks will be broken, as will any
+  symlink that would affect the location of an extracted file. [Alias:
+  `U`]
+- `strip` Remove the specified number of leading path elements.
+  Pathnames with fewer elements will be silently skipped.  Note that
+  the pathname is edited after applying the filter, but before
+  security checks. [Alias: `strip-components`, `stripComponents`]
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `preserveOwner` If true, tar will set the `uid` and `gid` of
+  extracted entries to the `uid` and `gid` fields in the archive.
+  This defaults to true when run as root, and false otherwise.  If
+  false, then files and directories will be set with the owner and
+  group of the user running the process.  This is similar to `-p` in
+  `tar(1)`, but ACLs and other system-specific data is never unpacked
+  in this implementation, and modes are set by default already.
+  [Alias: `p`]
+- `uid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified user id, regardless of the `uid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `gid` option.
+- `gid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified group id, regardless of the `gid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `uid` option.
+- `noMtime` Set to true to omit writing `mtime` value for extracted
+  entries. [Alias: `m`, `no-mtime`]
+- `transform` Provide a function that takes an `entry` object, and
+  returns a stream, or any falsey value.  If a stream is provided,
+  then that stream's data will be written instead of the contents of
+  the archive entry.  If a falsey value is provided, then the entry is
+  written to disk as normal.  (To exclude items from extraction, use
+  the `filter` option described above.)
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.
+
+The following options are mostly internal, but can be modified in some
+advanced use cases, such as re-using caches between runs.
+
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `umask` Filter the modes of entries like `process.umask()`.
+- `dmode` Default mode for directories
+- `fmode` Default mode for files
+- `dirCache` A Map object of which directories exist.
+- `maxMetaEntrySize` The maximum size of meta entries that is
+  supported.  Defaults to 1 MB.
+
+Note that using an asynchronous stream type with the `transform`
+option will cause undefined behavior in sync extractions.
+[MiniPass](http://npm.im/minipass)-based streams are designed for this
+use case.
+
+### tar.t(options, fileList, callback) [alias: tar.list]
+
+List the contents of a tarball archive.
+
+The `fileList` is an array of paths to list from the tarball.  If
+no paths are provided, then all the entries are listed.
+
+If the archive is gzipped, then tar will detect this and unzip it.
+
+Returns an event emitter that emits `entry` events with
+`tar.ReadEntry` objects.  However, they don't emit `'data'` or `'end'`
+events.  (If you want to get actual readable entries, use the
+`tar.Parse` class instead.)
+
+The following options are supported:
+
+- `cwd` Extract files relative to the specified directory.  Defaults
+  to `process.cwd()`. [Alias: `C`]
+- `file` The archive file to list.  If not specified, then a
+  Writable stream is returned where the archive data should be
+  written. [Alias: `f`]
+- `sync` Read the specified file synchronously.  (This has no effect
+  when a file option isn't specified, because entries are emitted as
+  fast as they are parsed from the stream anyway.)
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being listed.  Return `true` to emit the entry from the
+  archive, or `false` to skip it.
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.  This is important for when both `file` and
+  `sync` are set, because it will be called synchronously.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noResume` By default, `entry` streams are resumed immediately after
+  the call to `onentry`.  Set `noResume: true` to suppress this
+  behavior.  Note that by opting into this, the stream will never
+  complete until the entry data is consumed.
+
+### tar.u(options, fileList, callback) [alias: tar.update]
+
+Add files to an archive if they are newer than the entry already in
+the tarball archive.
+
+The `fileList` is an array of paths to add to the tarball.  Adding a
+directory also adds its children recursively.
+
+An entry in `fileList` that starts with an `@` symbol is a tar archive
+whose entries will be added.  To add a file that starts with `@`,
+prepend it with `./`.
+
+The following options are supported:
+
+- `file` Required. Write the tarball archive to the specified
+  filename. [Alias: `f`]
+- `sync` Act synchronously.  If this is set, then any provided file
+  will be fully written after the call to `tar.c`.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for adding entries to the
+  archive.  Defaults to `process.cwd()`.  [Alias: `C`]
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()` [Alias: `z`]
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths. [Alias: `P`]
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noDirRecurse` Do not recursively archive the contents of
+  directories. [Alias: `n`]
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such. [Alias: `L`, `h`]
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+  [Alias: `m`, `no-mtime`]
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+### tar.r(options, fileList, callback) [alias: tar.replace]
+
+Add files to an existing archive.  Because later entries override
+earlier entries, this effectively replaces any existing entries.
+
+The `fileList` is an array of paths to add to the tarball.  Adding a
+directory also adds its children recursively.
+
+An entry in `fileList` that starts with an `@` symbol is a tar archive
+whose entries will be added.  To add a file that starts with `@`,
+prepend it with `./`.
+
+The following options are supported:
+
+- `file` Required. Write the tarball archive to the specified
+  filename. [Alias: `f`]
+- `sync` Act synchronously.  If this is set, then any provided file
+  will be fully written after the call to `tar.c`.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for adding entries to the
+  archive.  Defaults to `process.cwd()`.  [Alias: `C`]
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()` [Alias: `z`]
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths. [Alias: `P`]
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noDirRecurse` Do not recursively archive the contents of
+  directories. [Alias: `n`]
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such. [Alias: `L`, `h`]
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+  [Alias: `m`, `no-mtime`]
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+
+## Low-Level API
+
+### class tar.Pack
+
+A readable tar stream.
+
+Has all the standard readable stream interface stuff.  `'data'` and
+`'end'` events, `read()` method, `pause()` and `resume()`, etc.
+
+#### constructor(options)
+
+The following options are supported:
+
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.
+- `prefix` A path portion to prefix onto the entries in the archive.
+- `gzip` Set to any truthy value to create a gzipped archive, or an
+  object with settings for `zlib.Gzip()`
+- `filter` A function that gets called with `(path, stat)` for each
+  entry being added.  Return `true` to add the entry to the archive,
+  or `false` to omit it.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `readdirCache` A Map object that caches calls to `readdir`.
+- `jobs` A number specifying how many concurrent jobs to run.
+  Defaults to 4.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 16 MB.
+- `noDirRecurse` Do not recursively archive the contents of
+  directories.
+- `follow` Set to true to pack the targets of symbolic links.  Without
+  this option, symbolic links are archived as such.
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+- `mtime` Set to a `Date` object to force a specific `mtime` for
+  everything added to the archive.  Overridden by `noMtime`.
+
+#### add(path)
+
+Adds an entry to the archive.  Returns the Pack stream.
+
+#### write(path)
+
+Adds an entry to the archive.  Returns true if flushed.
+
+#### end()
+
+Finishes the archive.
+
+### class tar.Pack.Sync
+
+Synchronous version of `tar.Pack`.
+
+### class tar.Unpack
+
+A writable stream that unpacks a tar archive onto the file system.
+
+All the normal writable stream stuff is supported.  `write()` and
+`end()` methods, `'drain'` events, etc.
+
+Note that all directories that are created will be forced to be
+writable, readable, and listable by their owner, to avoid cases where
+a directory prevents extraction of child entries by virtue of its
+mode.
+
+`'close'` is emitted when it's done writing stuff to the file system.
+
+Most unpack errors will cause a `warn` event to be emitted.  If the
+`cwd` is missing, or not a directory, then an error will be emitted.
+
+#### constructor(options)
+
+- `cwd` Extract files relative to the specified directory.  Defaults
+  to `process.cwd()`.  If provided, this must exist and must be a
+  directory.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being unpacked.  Return `true` to unpack the entry from the
+  archive, or `false` to skip it.
+- `newer` Set to true to keep the existing file on disk if it's newer
+  than the file in the archive.
+- `keep` Do not overwrite existing files.  In particular, if a file
+  appears more than once in an archive, later copies will not
+  overwrite earlier copies.
+- `preservePaths` Allow absolute paths, paths containing `..`, and
+  extracting through symbolic links.  By default, `/` is stripped from
+  absolute paths, `..` paths are not extracted, and any file whose
+  location would be modified by a symbolic link is not extracted.
+- `unlink` Unlink files before creating them.  Without this option,
+  tar overwrites existing files, which preserves existing hardlinks.
+  With this option, existing hardlinks will be broken, as will any
+  symlink that would affect the location of an extracted file.
+- `strip` Remove the specified number of leading path elements.
+  Pathnames with fewer elements will be silently skipped.  Note that
+  the pathname is edited after applying the filter, but before
+  security checks.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `umask` Filter the modes of entries like `process.umask()`.
+- `dmode` Default mode for directories
+- `fmode` Default mode for files
+- `dirCache` A Map object of which directories exist.
+- `maxMetaEntrySize` The maximum size of meta entries that is
+  supported.  Defaults to 1 MB.
+- `preserveOwner` If true, tar will set the `uid` and `gid` of
+  extracted entries to the `uid` and `gid` fields in the archive.
+  This defaults to true when run as root, and false otherwise.  If
+  false, then files and directories will be set with the owner and
+  group of the user running the process.  This is similar to `-p` in
+  `tar(1)`, but ACLs and other system-specific data is never unpacked
+  in this implementation, and modes are set by default already.
+- `win32` True if on a windows platform.  Causes behavior where
+  filenames containing `<|>?` chars are converted to
+  windows-compatible values while being unpacked.
+- `uid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified user id, regardless of the `uid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `gid` option.
+- `gid` Set to a number to force ownership of all extracted files and
+  folders, and all implicitly created directories, to be owned by the
+  specified group id, regardless of the `gid` field in the archive.
+  Cannot be used along with `preserveOwner`.  Requires also setting a
+  `uid` option.
+- `noMtime` Set to true to omit writing `mtime` value for extracted
+  entries.
+- `transform` Provide a function that takes an `entry` object, and
+  returns a stream, or any falsey value.  If a stream is provided,
+  then that stream's data will be written instead of the contents of
+  the archive entry.  If a falsey value is provided, then the entry is
+  written to disk as normal.  (To exclude items from extraction, use
+  the `filter` option described above.)
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+
+### class tar.Unpack.Sync
+
+Synchronous version of `tar.Unpack`.
+
+Note that using an asynchronous stream type with the `transform`
+option will cause undefined behavior in sync unpack streams.
+[MiniPass](http://npm.im/minipass)-based streams are designed for this
+use case.
+
+### class tar.Parse
+
+A writable stream that parses a tar archive stream.  All the standard
+writable stream stuff is supported.
+
+If the archive is gzipped, then tar will detect this and unzip it.
+
+Emits `'entry'` events with `tar.ReadEntry` objects, which are
+themselves readable streams that you can pipe wherever.
+
+Each `entry` will not emit until the one before it is flushed through,
+so make sure to either consume the data (with `on('data', ...)` or
+`.pipe(...)`) or throw it away with `.resume()` to keep the stream
+flowing.
+
+#### constructor(options)
+
+Returns an event emitter that emits `entry` events with
+`tar.ReadEntry` objects.
+
+The following options are supported:
+
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `filter` A function that gets called with `(path, entry)` for each
+  entry being listed.  Return `true` to emit the entry from the
+  archive, or `false` to skip it.
+- `onentry` A function that gets called with `(entry)` for each entry
+  that passes the filter.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+
+#### abort(message, error)
+
+Stop all parsing activities.  This is called when there are zlib
+errors.  It also emits a warning with the message and error provided.
+
+### class tar.ReadEntry extends [MiniPass](http://npm.im/minipass)
+
+A representation of an entry that is being read out of a tar archive.
+
+It has the following fields:
+
+- `extended` The extended metadata object provided to the constructor.
+- `globalExtended` The global extended metadata object provided to the
+  constructor.
+- `remain` The number of bytes remaining to be written into the
+  stream.
+- `blockRemain` The number of 512-byte blocks remaining to be written
+  into the stream.
+- `ignore` Whether this entry should be ignored.
+- `meta` True if this represents metadata about the next entry, false
+  if it represents a filesystem object.
+- All the fields from the header, extended header, and global extended
+  header are added to the ReadEntry object.  So it has `path`, `type`,
+  `size, `mode`, and so on.
+
+#### constructor(header, extended, globalExtended)
+
+Create a new ReadEntry object with the specified header, extended
+header, and global extended header values.
+
+### class tar.WriteEntry extends [MiniPass](http://npm.im/minipass)
+
+A representation of an entry that is being written from the file
+system into a tar archive.
+
+Emits data for the Header, and for the Pax Extended Header if one is
+required, as well as any body data.
+
+Creating a WriteEntry for a directory does not also create
+WriteEntry objects for all of the directory contents.
+
+It has the following fields:
+
+- `path` The path field that will be written to the archive.  By
+  default, this is also the path from the cwd to the file system
+  object.
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `myuid` If supported, the uid of the user running the current
+  process.
+- `myuser` The `env.USER` string if set, or `''`.  Set as the entry
+  `uname` field if the file's `uid` matches `this.myuid`.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 1 MB.
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.
+- `absolute` The absolute path to the entry on the filesystem.  By
+  default, this is `path.resolve(this.cwd, this.path)`, but it can be
+  overridden explicitly.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `win32` True if on a windows platform.  Causes behavior where paths
+  replace `\` with `/` and filenames containing the windows-compatible
+  forms of `<|>?:` characters are converted to actual `<|>?:` characters
+  in the archive.
+- `noPax` Suppress pax extended headers.  Note that this means that
+  long paths and linkpaths will be truncated, and large or negative
+  numeric values may be interpreted incorrectly.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+
+
+#### constructor(path, options)
+
+`path` is the path of the entry as it is written in the archive.
+
+The following options are supported:
+
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `maxReadSize` The maximum buffer size for `fs.read()` operations.
+  Defaults to 1 MB.
+- `linkCache` A Map object containing the device and inode value for
+  any file whose nlink is > 1, to identify hard links.
+- `statCache` A Map object that caches calls `lstat`.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `cwd` The current working directory for creating the archive.
+  Defaults to `process.cwd()`.
+- `absolute` The absolute path to the entry on the filesystem.  By
+  default, this is `path.resolve(this.cwd, this.path)`, but it can be
+  overridden explicitly.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `win32` True if on a windows platform.  Causes behavior where paths
+  replace `\` with `/`.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+- `umask` Set to restrict the modes on the entries in the archive,
+  somewhat like how umask works on file creation.  Defaults to
+  `process.umask()` on unix systems, or `0o22` on Windows.
+
+#### warn(message, data)
+
+If strict, emit an error with the provided message.
+
+Othewise, emit a `'warn'` event with the provided message and data.
+
+### class tar.WriteEntry.Sync
+
+Synchronous version of tar.WriteEntry
+
+### class tar.WriteEntry.Tar
+
+A version of tar.WriteEntry that gets its data from a tar.ReadEntry
+instead of from the filesystem.
+
+#### constructor(readEntry, options)
+
+`readEntry` is the entry being read out of another archive.
+
+The following options are supported:
+
+- `portable` Omit metadata that is system-specific: `ctime`, `atime`,
+  `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
+  that `mtime` is still included, because this is necessary other
+  time-based operations.
+- `preservePaths` Allow absolute paths.  By default, `/` is stripped
+  from absolute paths.
+- `strict` Treat warnings as crash-worthy errors.  Default false.
+- `onwarn` A function that will get called with `(message, data)` for
+  any warnings encountered.
+- `noMtime` Set to true to omit writing `mtime` values for entries.
+  Note that this prevents using other mtime-based features like
+  `tar.update` or the `keepNewer` option with the resulting tar archive.
+
+### class tar.Header
+
+A class for reading and writing header blocks.
+
+It has the following fields:
+
+- `nullBlock` True if decoding a block which is entirely composed of
+  `0x00` null bytes.  (Useful because tar files are terminated by
+  at least 2 null blocks.)
+- `cksumValid` True if the checksum in the header is valid, false
+  otherwise.
+- `needPax` True if the values, as encoded, will require a Pax
+  extended header.
+- `path` The path of the entry.
+- `mode` The 4 lowest-order octal digits of the file mode.  That is,
+  read/write/execute permissions for world, group, and owner, and the
+  setuid, setgid, and sticky bits.
+- `uid` Numeric user id of the file owner
+- `gid` Numeric group id of the file owner
+- `size` Size of the file in bytes
+- `mtime` Modified time of the file
+- `cksum` The checksum of the header.  This is generated by adding all
+  the bytes of the header block, treating the checksum field itself as
+  all ascii space characters (that is, `0x20`).
+- `type` The human-readable name of the type of entry this represents,
+  or the alphanumeric key if unknown.
+- `typeKey` The alphanumeric key for the type of entry this header
+  represents.
+- `linkpath` The target of Link and SymbolicLink entries.
+- `uname` Human-readable user name of the file owner
+- `gname` Human-readable group name of the file owner
+- `devmaj` The major portion of the device number.  Always `0` for
+  files, directories, and links.
+- `devmin` The minor portion of the device number.  Always `0` for
+  files, directories, and links.
+- `atime` File access time.
+- `ctime` File change time.
+
+#### constructor(data, [offset=0])
+
+`data` is optional.  It is either a Buffer that should be interpreted
+as a tar Header starting at the specified offset and continuing for
+512 bytes, or a data object of keys and values to set on the header
+object, and eventually encode as a tar Header.
+
+#### decode(block, offset)
+
+Decode the provided buffer starting at the specified offset.
+
+Buffer length must be greater than 512 bytes.
+
+#### set(data)
+
+Set the fields in the data object.
+
+#### encode(buffer, offset)
+
+Encode the header fields into the buffer at the specified offset.
+
+Returns `this.needPax` to indicate whether a Pax Extended Header is
+required to properly encode the specified data.
+
+### class tar.Pax
+
+An object representing a set of key-value pairs in an Pax extended
+header entry.
+
+It has the following fields.  Where the same name is used, they have
+the same semantics as the tar.Header field of the same name.
+
+- `global` True if this represents a global extended header, or false
+  if it is for a single entry.
+- `atime`
+- `charset`
+- `comment`
+- `ctime`
+- `gid`
+- `gname`
+- `linkpath`
+- `mtime`
+- `path`
+- `size`
+- `uid`
+- `uname`
+- `dev`
+- `ino`
+- `nlink`
+
+#### constructor(object, global)
+
+Set the fields set in the object.  `global` is a boolean that defaults
+to false.
+
+#### encode()
+
+Return a Buffer containing the header and body for the Pax extended
+header entry, or `null` if there is nothing to encode.
+
+#### encodeBody()
+
+Return a string representing the body of the pax extended header
+entry.
+
+#### encodeField(fieldName)
+
+Return a string representing the key/value encoding for the specified
+fieldName, or `''` if the field is unset.
+
+### tar.Pax.parse(string, extended, global)
+
+Return a new Pax object created by parsing the contents of the string
+provided.
+
+If the `extended` object is set, then also add the fields from that
+object.  (This is necessary because multiple metadata entries can
+occur in sequence.)
+
+### tar.types
+
+A translation table for the `type` field in tar headers.
+
+#### tar.types.name.get(code)
+
+Get the human-readable name for a given alphanumeric code.
+
+#### tar.types.code.get(name)
+
+Get the alphanumeric code for a given human-readable name.
diff --git a/node_modules/pacote/node_modules/tar/index.js b/node_modules/pacote/node_modules/tar/index.js
new file mode 100644
index 000000000..c9ae06e79
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/index.js
@@ -0,0 +1,18 @@
+'use strict'
+
+// high-level commands
+exports.c = exports.create = require('./lib/create.js')
+exports.r = exports.replace = require('./lib/replace.js')
+exports.t = exports.list = require('./lib/list.js')
+exports.u = exports.update = require('./lib/update.js')
+exports.x = exports.extract = require('./lib/extract.js')
+
+// classes
+exports.Pack = require('./lib/pack.js')
+exports.Unpack = require('./lib/unpack.js')
+exports.Parse = require('./lib/parse.js')
+exports.ReadEntry = require('./lib/read-entry.js')
+exports.WriteEntry = require('./lib/write-entry.js')
+exports.Header = require('./lib/header.js')
+exports.Pax = require('./lib/pax.js')
+exports.types = require('./lib/types.js')
diff --git a/node_modules/pacote/node_modules/tar/lib/buffer.js b/node_modules/pacote/node_modules/tar/lib/buffer.js
new file mode 100644
index 000000000..7876d5b3e
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/buffer.js
@@ -0,0 +1,11 @@
+'use strict'
+
+// Buffer in node 4.x < 4.5.0 doesn't have working Buffer.from
+// or Buffer.alloc, and Buffer in node 10 deprecated the ctor.
+// .M, this is fine .\^/M..
+let B = Buffer
+/* istanbul ignore next */
+if (!B.alloc) {
+  B = require('safe-buffer').Buffer
+}
+module.exports = B
diff --git a/node_modules/pacote/node_modules/tar/lib/create.js b/node_modules/pacote/node_modules/tar/lib/create.js
new file mode 100644
index 000000000..a37aa52e6
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/create.js
@@ -0,0 +1,105 @@
+'use strict'
+
+// tar -c
+const hlo = require('./high-level-opt.js')
+
+const Pack = require('./pack.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const t = require('./list.js')
+const path = require('path')
+
+const c = module.exports = (opt_, files, cb) => {
+  if (typeof files === 'function')
+    cb = files
+
+  if (Array.isArray(opt_))
+    files = opt_, opt_ = {}
+
+  if (!files || !Array.isArray(files) || !files.length)
+    throw new TypeError('no files or directories specified')
+
+  files = Array.from(files)
+
+  const opt = hlo(opt_)
+
+  if (opt.sync && typeof cb === 'function')
+    throw new TypeError('callback not supported for sync tar functions')
+
+  if (!opt.file && typeof cb === 'function')
+    throw new TypeError('callback only supported with file option')
+
+  return opt.file && opt.sync ? createFileSync(opt, files)
+    : opt.file ? createFile(opt, files, cb)
+    : opt.sync ? createSync(opt, files)
+    : create(opt, files)
+}
+
+const createFileSync = (opt, files) => {
+  const p = new Pack.Sync(opt)
+  const stream = new fsm.WriteStreamSync(opt.file, {
+    mode: opt.mode || 0o666
+  })
+  p.pipe(stream)
+  addFilesSync(p, files)
+}
+
+const createFile = (opt, files, cb) => {
+  const p = new Pack(opt)
+  const stream = new fsm.WriteStream(opt.file, {
+    mode: opt.mode || 0o666
+  })
+  p.pipe(stream)
+
+  const promise = new Promise((res, rej) => {
+    stream.on('error', rej)
+    stream.on('close', res)
+    p.on('error', rej)
+  })
+
+  addFilesAsync(p, files)
+
+  return cb ? promise.then(cb, cb) : promise
+}
+
+const addFilesSync = (p, files) => {
+  files.forEach(file => {
+    if (file.charAt(0) === '@')
+      t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        sync: true,
+        noResume: true,
+        onentry: entry => p.add(entry)
+      })
+    else
+      p.add(file)
+  })
+  p.end()
+}
+
+const addFilesAsync = (p, files) => {
+  while (files.length) {
+    const file = files.shift()
+    if (file.charAt(0) === '@')
+      return t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        noResume: true,
+        onentry: entry => p.add(entry)
+      }).then(_ => addFilesAsync(p, files))
+    else
+      p.add(file)
+  }
+  p.end()
+}
+
+const createSync = (opt, files) => {
+  const p = new Pack.Sync(opt)
+  addFilesSync(p, files)
+  return p
+}
+
+const create = (opt, files) => {
+  const p = new Pack(opt)
+  addFilesAsync(p, files)
+  return p
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/extract.js b/node_modules/pacote/node_modules/tar/lib/extract.js
new file mode 100644
index 000000000..cbb458a0a
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/extract.js
@@ -0,0 +1,112 @@
+'use strict'
+
+// tar -x
+const hlo = require('./high-level-opt.js')
+const Unpack = require('./unpack.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const path = require('path')
+
+const x = module.exports = (opt_, files, cb) => {
+  if (typeof opt_ === 'function')
+    cb = opt_, files = null, opt_ = {}
+  else if (Array.isArray(opt_))
+    files = opt_, opt_ = {}
+
+  if (typeof files === 'function')
+    cb = files, files = null
+
+  if (!files)
+    files = []
+  else
+    files = Array.from(files)
+
+  const opt = hlo(opt_)
+
+  if (opt.sync && typeof cb === 'function')
+    throw new TypeError('callback not supported for sync tar functions')
+
+  if (!opt.file && typeof cb === 'function')
+    throw new TypeError('callback only supported with file option')
+
+  if (files.length)
+    filesFilter(opt, files)
+
+  return opt.file && opt.sync ? extractFileSync(opt)
+    : opt.file ? extractFile(opt, cb)
+    : opt.sync ? extractSync(opt)
+    : extract(opt)
+}
+
+// construct a filter that limits the file entries listed
+// include child entries if a dir is included
+const filesFilter = (opt, files) => {
+  const map = new Map(files.map(f => [f.replace(/\/+$/, ''), true]))
+  const filter = opt.filter
+
+  const mapHas = (file, r) => {
+    const root = r || path.parse(file).root || '.'
+    const ret = file === root ? false
+      : map.has(file) ? map.get(file)
+      : mapHas(path.dirname(file), root)
+
+    map.set(file, ret)
+    return ret
+  }
+
+  opt.filter = filter
+    ? (file, entry) => filter(file, entry) && mapHas(file.replace(/\/+$/, ''))
+    : file => mapHas(file.replace(/\/+$/, ''))
+}
+
+const extractFileSync = opt => {
+  const u = new Unpack.Sync(opt)
+
+  const file = opt.file
+  let threw = true
+  let fd
+  const stat = fs.statSync(file)
+  // This trades a zero-byte read() syscall for a stat
+  // However, it will usually result in less memory allocation
+  const readSize = opt.maxReadSize || 16*1024*1024
+  const stream = new fsm.ReadStreamSync(file, {
+    readSize: readSize,
+    size: stat.size
+  })
+  stream.pipe(u)
+}
+
+const extractFile = (opt, cb) => {
+  const u = new Unpack(opt)
+  const readSize = opt.maxReadSize || 16*1024*1024
+
+  const file = opt.file
+  const p = new Promise((resolve, reject) => {
+    u.on('error', reject)
+    u.on('close', resolve)
+
+    // This trades a zero-byte read() syscall for a stat
+    // However, it will usually result in less memory allocation
+    fs.stat(file, (er, stat) => {
+      if (er)
+        reject(er)
+      else {
+        const stream = new fsm.ReadStream(file, {
+          readSize: readSize,
+          size: stat.size
+        })
+        stream.on('error', reject)
+        stream.pipe(u)
+      }
+    })
+  })
+  return cb ? p.then(cb, cb) : p
+}
+
+const extractSync = opt => {
+  return new Unpack.Sync(opt)
+}
+
+const extract = opt => {
+  return new Unpack(opt)
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/header.js b/node_modules/pacote/node_modules/tar/lib/header.js
new file mode 100644
index 000000000..d29c3b990
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/header.js
@@ -0,0 +1,289 @@
+'use strict'
+// parse a 512-byte header block to a data object, or vice-versa
+// encode returns `true` if a pax extended header is needed, because
+// the data could not be faithfully encoded in a simple header.
+// (Also, check header.needPax to see if it needs a pax header.)
+
+const Buffer = require('./buffer.js')
+const types = require('./types.js')
+const pathModule = require('path').posix
+const large = require('./large-numbers.js')
+
+const SLURP = Symbol('slurp')
+const TYPE = Symbol('type')
+
+class Header {
+  constructor (data, off, ex, gex) {
+    this.cksumValid = false
+    this.needPax = false
+    this.nullBlock = false
+
+    this.block = null
+    this.path = null
+    this.mode = null
+    this.uid = null
+    this.gid = null
+    this.size = null
+    this.mtime = null
+    this.cksum = null
+    this[TYPE] = '0'
+    this.linkpath = null
+    this.uname = null
+    this.gname = null
+    this.devmaj = 0
+    this.devmin = 0
+    this.atime = null
+    this.ctime = null
+
+    if (Buffer.isBuffer(data))
+      this.decode(data, off || 0, ex, gex)
+    else if (data)
+      this.set(data)
+  }
+
+  decode (buf, off, ex, gex) {
+    if (!off)
+      off = 0
+
+    if (!buf || !(buf.length >= off + 512))
+      throw new Error('need 512 bytes for header')
+
+    this.path = decString(buf, off, 100)
+    this.mode = decNumber(buf, off + 100, 8)
+    this.uid = decNumber(buf, off + 108, 8)
+    this.gid = decNumber(buf, off + 116, 8)
+    this.size = decNumber(buf, off + 124, 12)
+    this.mtime = decDate(buf, off + 136, 12)
+    this.cksum = decNumber(buf, off + 148, 12)
+
+    // if we have extended or global extended headers, apply them now
+    // See https://github.com/npm/node-tar/pull/187
+    this[SLURP](ex)
+    this[SLURP](gex, true)
+
+    // old tar versions marked dirs as a file with a trailing /
+    this[TYPE] = decString(buf, off + 156, 1)
+    if (this[TYPE] === '')
+      this[TYPE] = '0'
+    if (this[TYPE] === '0' && this.path.substr(-1) === '/')
+      this[TYPE] = '5'
+
+    // tar implementations sometimes incorrectly put the stat(dir).size
+    // as the size in the tarball, even though Directory entries are
+    // not able to have any body at all.  In the very rare chance that
+    // it actually DOES have a body, we weren't going to do anything with
+    // it anyway, and it'll just be a warning about an invalid header.
+    if (this[TYPE] === '5')
+      this.size = 0
+
+    this.linkpath = decString(buf, off + 157, 100)
+    if (buf.slice(off + 257, off + 265).toString() === 'ustar\u000000') {
+      this.uname = decString(buf, off + 265, 32)
+      this.gname = decString(buf, off + 297, 32)
+      this.devmaj = decNumber(buf, off + 329, 8)
+      this.devmin = decNumber(buf, off + 337, 8)
+      if (buf[off + 475] !== 0) {
+        // definitely a prefix, definitely >130 chars.
+        const prefix = decString(buf, off + 345, 155)
+        this.path = prefix + '/' + this.path
+      } else {
+        const prefix = decString(buf, off + 345, 130)
+        if (prefix)
+          this.path = prefix + '/' + this.path
+        this.atime = decDate(buf, off + 476, 12)
+        this.ctime = decDate(buf, off + 488, 12)
+      }
+    }
+
+    let sum = 8 * 0x20
+    for (let i = off; i < off + 148; i++) {
+      sum += buf[i]
+    }
+    for (let i = off + 156; i < off + 512; i++) {
+      sum += buf[i]
+    }
+    this.cksumValid = sum === this.cksum
+    if (this.cksum === null && sum === 8 * 0x20)
+      this.nullBlock = true
+  }
+
+  [SLURP] (ex, global) {
+    for (let k in ex) {
+      // we slurp in everything except for the path attribute in
+      // a global extended header, because that's weird.
+      if (ex[k] !== null && ex[k] !== undefined &&
+          !(global && k === 'path'))
+        this[k] = ex[k]
+    }
+  }
+
+  encode (buf, off) {
+    if (!buf) {
+      buf = this.block = Buffer.alloc(512)
+      off = 0
+    }
+
+    if (!off)
+      off = 0
+
+    if (!(buf.length >= off + 512))
+      throw new Error('need 512 bytes for header')
+
+    const prefixSize = this.ctime || this.atime ? 130 : 155
+    const split = splitPrefix(this.path || '', prefixSize)
+    const path = split[0]
+    const prefix = split[1]
+    this.needPax = split[2]
+
+    this.needPax = encString(buf, off, 100, path) || this.needPax
+    this.needPax = encNumber(buf, off + 100, 8, this.mode) || this.needPax
+    this.needPax = encNumber(buf, off + 108, 8, this.uid) || this.needPax
+    this.needPax = encNumber(buf, off + 116, 8, this.gid) || this.needPax
+    this.needPax = encNumber(buf, off + 124, 12, this.size) || this.needPax
+    this.needPax = encDate(buf, off + 136, 12, this.mtime) || this.needPax
+    buf[off + 156] = this[TYPE].charCodeAt(0)
+    this.needPax = encString(buf, off + 157, 100, this.linkpath) || this.needPax
+    buf.write('ustar\u000000', off + 257, 8)
+    this.needPax = encString(buf, off + 265, 32, this.uname) || this.needPax
+    this.needPax = encString(buf, off + 297, 32, this.gname) || this.needPax
+    this.needPax = encNumber(buf, off + 329, 8, this.devmaj) || this.needPax
+    this.needPax = encNumber(buf, off + 337, 8, this.devmin) || this.needPax
+    this.needPax = encString(buf, off + 345, prefixSize, prefix) || this.needPax
+    if (buf[off + 475] !== 0)
+      this.needPax = encString(buf, off + 345, 155, prefix) || this.needPax
+    else {
+      this.needPax = encString(buf, off + 345, 130, prefix) || this.needPax
+      this.needPax = encDate(buf, off + 476, 12, this.atime) || this.needPax
+      this.needPax = encDate(buf, off + 488, 12, this.ctime) || this.needPax
+    }
+
+    let sum = 8 * 0x20
+    for (let i = off; i < off + 148; i++) {
+      sum += buf[i]
+    }
+    for (let i = off + 156; i < off + 512; i++) {
+      sum += buf[i]
+    }
+    this.cksum = sum
+    encNumber(buf, off + 148, 8, this.cksum)
+    this.cksumValid = true
+
+    return this.needPax
+  }
+
+  set (data) {
+    for (let i in data) {
+      if (data[i] !== null && data[i] !== undefined)
+        this[i] = data[i]
+    }
+  }
+
+  get type () {
+    return types.name.get(this[TYPE]) || this[TYPE]
+  }
+
+  get typeKey () {
+    return this[TYPE]
+  }
+
+  set type (type) {
+    if (types.code.has(type))
+      this[TYPE] = types.code.get(type)
+    else
+      this[TYPE] = type
+  }
+}
+
+const splitPrefix = (p, prefixSize) => {
+  const pathSize = 100
+  let pp = p
+  let prefix = ''
+  let ret
+  const root = pathModule.parse(p).root || '.'
+
+  if (Buffer.byteLength(pp) < pathSize)
+    ret = [pp, prefix, false]
+  else {
+    // first set prefix to the dir, and path to the base
+    prefix = pathModule.dirname(pp)
+    pp = pathModule.basename(pp)
+
+    do {
+      // both fit!
+      if (Buffer.byteLength(pp) <= pathSize &&
+          Buffer.byteLength(prefix) <= prefixSize)
+        ret = [pp, prefix, false]
+
+      // prefix fits in prefix, but path doesn't fit in path
+      else if (Buffer.byteLength(pp) > pathSize &&
+          Buffer.byteLength(prefix) <= prefixSize)
+        ret = [pp.substr(0, pathSize - 1), prefix, true]
+
+      else {
+        // make path take a bit from prefix
+        pp = pathModule.join(pathModule.basename(prefix), pp)
+        prefix = pathModule.dirname(prefix)
+      }
+    } while (prefix !== root && !ret)
+
+    // at this point, found no resolution, just truncate
+    if (!ret)
+      ret = [p.substr(0, pathSize - 1), '', true]
+  }
+  return ret
+}
+
+const decString = (buf, off, size) =>
+  buf.slice(off, off + size).toString('utf8').replace(/\0.*/, '')
+
+const decDate = (buf, off, size) =>
+  numToDate(decNumber(buf, off, size))
+
+const numToDate = num => num === null ? null : new Date(num * 1000)
+
+const decNumber = (buf, off, size) =>
+  buf[off] & 0x80 ? large.parse(buf.slice(off, off + size))
+    : decSmallNumber(buf, off, size)
+
+const nanNull = value => isNaN(value) ? null : value
+
+const decSmallNumber = (buf, off, size) =>
+  nanNull(parseInt(
+    buf.slice(off, off + size)
+      .toString('utf8').replace(/\0.*$/, '').trim(), 8))
+
+// the maximum encodable as a null-terminated octal, by field size
+const MAXNUM = {
+  12: 0o77777777777,
+  8 : 0o7777777
+}
+
+const encNumber = (buf, off, size, number) =>
+  number === null ? false :
+  number > MAXNUM[size] || number < 0
+    ? (large.encode(number, buf.slice(off, off + size)), true)
+    : (encSmallNumber(buf, off, size, number), false)
+
+const encSmallNumber = (buf, off, size, number) =>
+  buf.write(octalString(number, size), off, size, 'ascii')
+
+const octalString = (number, size) =>
+  padOctal(Math.floor(number).toString(8), size)
+
+const padOctal = (string, size) =>
+  (string.length === size - 1 ? string
+  : new Array(size - string.length - 1).join('0') + string + ' ') + '\0'
+
+const encDate = (buf, off, size, date) =>
+  date === null ? false :
+  encNumber(buf, off, size, date.getTime() / 1000)
+
+// enough to fill the longest string we've got
+const NULLS = new Array(156).join('\0')
+// pad with nulls, return true if it's longer or non-ascii
+const encString = (buf, off, size, string) =>
+  string === null ? false :
+  (buf.write(string + NULLS, off, size, 'utf8'),
+   string.length !== Buffer.byteLength(string) || string.length > size)
+
+module.exports = Header
diff --git a/node_modules/pacote/node_modules/tar/lib/high-level-opt.js b/node_modules/pacote/node_modules/tar/lib/high-level-opt.js
new file mode 100644
index 000000000..7333db915
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/high-level-opt.js
@@ -0,0 +1,29 @@
+'use strict'
+
+// turn tar(1) style args like `C` into the more verbose things like `cwd`
+
+const argmap = new Map([
+  ['C', 'cwd'],
+  ['f', 'file'],
+  ['z', 'gzip'],
+  ['P', 'preservePaths'],
+  ['U', 'unlink'],
+  ['strip-components', 'strip'],
+  ['stripComponents', 'strip'],
+  ['keep-newer', 'newer'],
+  ['keepNewer', 'newer'],
+  ['keep-newer-files', 'newer'],
+  ['keepNewerFiles', 'newer'],
+  ['k', 'keep'],
+  ['keep-existing', 'keep'],
+  ['keepExisting', 'keep'],
+  ['m', 'noMtime'],
+  ['no-mtime', 'noMtime'],
+  ['p', 'preserveOwner'],
+  ['L', 'follow'],
+  ['h', 'follow']
+])
+
+const parse = module.exports = opt => opt ? Object.keys(opt).map(k => [
+  argmap.has(k) ? argmap.get(k) : k, opt[k]
+]).reduce((set, kv) => (set[kv[0]] = kv[1], set), Object.create(null)) : {}
diff --git a/node_modules/pacote/node_modules/tar/lib/large-numbers.js b/node_modules/pacote/node_modules/tar/lib/large-numbers.js
new file mode 100644
index 000000000..3e5c99255
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/large-numbers.js
@@ -0,0 +1,97 @@
+'use strict'
+// Tar can encode large and negative numbers using a leading byte of
+// 0xff for negative, and 0x80 for positive.
+
+const encode = exports.encode = (num, buf) => {
+  if (!Number.isSafeInteger(num))
+    // The number is so large that javascript cannot represent it with integer
+    // precision.
+    throw TypeError('cannot encode number outside of javascript safe integer range')
+  else if (num < 0)
+    encodeNegative(num, buf)
+  else
+    encodePositive(num, buf)
+  return buf
+}
+
+const encodePositive = (num, buf) => {
+  buf[0] = 0x80
+
+  for (var i = buf.length; i > 1; i--) {
+    buf[i-1] = num & 0xff
+    num = Math.floor(num / 0x100)
+  }
+}
+
+const encodeNegative = (num, buf) => {
+  buf[0] = 0xff
+  var flipped = false
+  num = num * -1
+  for (var i = buf.length; i > 1; i--) {
+    var byte = num & 0xff
+    num = Math.floor(num / 0x100)
+    if (flipped)
+      buf[i-1] = onesComp(byte)
+    else if (byte === 0)
+      buf[i-1] = 0
+    else {
+      flipped = true
+      buf[i-1] = twosComp(byte)
+    }
+  }
+}
+
+const parse = exports.parse = (buf) => {
+  var post = buf[buf.length - 1]
+  var pre = buf[0]
+  var value;
+  if (pre === 0x80)
+    value = pos(buf.slice(1, buf.length))
+  else if (pre === 0xff)
+    value = twos(buf)
+  else
+    throw TypeError('invalid base256 encoding')
+
+  if (!Number.isSafeInteger(value))
+    // The number is so large that javascript cannot represent it with integer
+    // precision.
+    throw TypeError('parsed number outside of javascript safe integer range')
+
+  return value
+}
+
+const twos = (buf) => {
+  var len = buf.length
+  var sum = 0
+  var flipped = false
+  for (var i = len - 1; i > -1; i--) {
+    var byte = buf[i]
+    var f
+    if (flipped)
+      f = onesComp(byte)
+    else if (byte === 0)
+      f = byte
+    else {
+      flipped = true
+      f = twosComp(byte)
+    }
+    if (f !== 0)
+      sum -= f * Math.pow(256, len - i - 1)
+  }
+  return sum
+}
+
+const pos = (buf) => {
+  var len = buf.length
+  var sum = 0
+  for (var i = len - 1; i > -1; i--) {
+    var byte = buf[i]
+    if (byte !== 0)
+      sum += byte * Math.pow(256, len - i - 1)
+  }
+  return sum
+}
+
+const onesComp = byte => (0xff ^ byte) & 0xff
+
+const twosComp = byte => ((0xff ^ byte) + 1) & 0xff
diff --git a/node_modules/pacote/node_modules/tar/lib/list.js b/node_modules/pacote/node_modules/tar/lib/list.js
new file mode 100644
index 000000000..250ebe001
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/list.js
@@ -0,0 +1,130 @@
+'use strict'
+
+const Buffer = require('./buffer.js')
+
+// XXX: This shares a lot in common with extract.js
+// maybe some DRY opportunity here?
+
+// tar -t
+const hlo = require('./high-level-opt.js')
+const Parser = require('./parse.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const path = require('path')
+
+const t = module.exports = (opt_, files, cb) => {
+  if (typeof opt_ === 'function')
+    cb = opt_, files = null, opt_ = {}
+  else if (Array.isArray(opt_))
+    files = opt_, opt_ = {}
+
+  if (typeof files === 'function')
+    cb = files, files = null
+
+  if (!files)
+    files = []
+  else
+    files = Array.from(files)
+
+  const opt = hlo(opt_)
+
+  if (opt.sync && typeof cb === 'function')
+    throw new TypeError('callback not supported for sync tar functions')
+
+  if (!opt.file && typeof cb === 'function')
+    throw new TypeError('callback only supported with file option')
+
+  if (files.length)
+    filesFilter(opt, files)
+
+  if (!opt.noResume)
+    onentryFunction(opt)
+
+  return opt.file && opt.sync ? listFileSync(opt)
+    : opt.file ? listFile(opt, cb)
+    : list(opt)
+}
+
+const onentryFunction = opt => {
+  const onentry = opt.onentry
+  opt.onentry = onentry ? e => {
+    onentry(e)
+    e.resume()
+  } : e => e.resume()
+}
+
+// construct a filter that limits the file entries listed
+// include child entries if a dir is included
+const filesFilter = (opt, files) => {
+  const map = new Map(files.map(f => [f.replace(/\/+$/, ''), true]))
+  const filter = opt.filter
+
+  const mapHas = (file, r) => {
+    const root = r || path.parse(file).root || '.'
+    const ret = file === root ? false
+      : map.has(file) ? map.get(file)
+      : mapHas(path.dirname(file), root)
+
+    map.set(file, ret)
+    return ret
+  }
+
+  opt.filter = filter
+    ? (file, entry) => filter(file, entry) && mapHas(file.replace(/\/+$/, ''))
+    : file => mapHas(file.replace(/\/+$/, ''))
+}
+
+const listFileSync = opt => {
+  const p = list(opt)
+  const file = opt.file
+  let threw = true
+  let fd
+  try {
+    const stat = fs.statSync(file)
+    const readSize = opt.maxReadSize || 16*1024*1024
+    if (stat.size < readSize) {
+      p.end(fs.readFileSync(file))
+    } else {
+      let pos = 0
+      const buf = Buffer.allocUnsafe(readSize)
+      fd = fs.openSync(file, 'r')
+      while (pos < stat.size) {
+        let bytesRead = fs.readSync(fd, buf, 0, readSize, pos)
+        pos += bytesRead
+        p.write(buf.slice(0, bytesRead))
+      }
+      p.end()
+    }
+    threw = false
+  } finally {
+    if (threw && fd)
+      try { fs.closeSync(fd) } catch (er) {}
+  }
+}
+
+const listFile = (opt, cb) => {
+  const parse = new Parser(opt)
+  const readSize = opt.maxReadSize || 16*1024*1024
+
+  const file = opt.file
+  const p = new Promise((resolve, reject) => {
+    parse.on('error', reject)
+    parse.on('end', resolve)
+
+    fs.stat(file, (er, stat) => {
+      if (er)
+        reject(er)
+      else {
+        const stream = new fsm.ReadStream(file, {
+          readSize: readSize,
+          size: stat.size
+        })
+        stream.on('error', reject)
+        stream.pipe(parse)
+      }
+    })
+  })
+  return cb ? p.then(cb, cb) : p
+}
+
+const list = opt => new Parser(opt)
diff --git a/node_modules/pacote/node_modules/tar/lib/mkdir.js b/node_modules/pacote/node_modules/tar/lib/mkdir.js
new file mode 100644
index 000000000..c6a154c24
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/mkdir.js
@@ -0,0 +1,206 @@
+'use strict'
+// wrapper around mkdirp for tar's needs.
+
+// TODO: This should probably be a class, not functionally
+// passing around state in a gazillion args.
+
+const mkdirp = require('mkdirp')
+const fs = require('fs')
+const path = require('path')
+const chownr = require('chownr')
+
+class SymlinkError extends Error {
+  constructor (symlink, path) {
+    super('Cannot extract through symbolic link')
+    this.path = path
+    this.symlink = symlink
+  }
+
+  get name () {
+    return 'SylinkError'
+  }
+}
+
+class CwdError extends Error {
+  constructor (path, code) {
+    super(code + ': Cannot cd into \'' + path + '\'')
+    this.path = path
+    this.code = code
+  }
+
+  get name () {
+    return 'CwdError'
+  }
+}
+
+const mkdir = module.exports = (dir, opt, cb) => {
+  // if there's any overlap between mask and mode,
+  // then we'll need an explicit chmod
+  const umask = opt.umask
+  const mode = opt.mode | 0o0700
+  const needChmod = (mode & umask) !== 0
+
+  const uid = opt.uid
+  const gid = opt.gid
+  const doChown = typeof uid === 'number' &&
+    typeof gid === 'number' &&
+    ( uid !== opt.processUid || gid !== opt.processGid )
+
+  const preserve = opt.preserve
+  const unlink = opt.unlink
+  const cache = opt.cache
+  const cwd = opt.cwd
+
+  const done = (er, created) => {
+    if (er)
+      cb(er)
+    else {
+      cache.set(dir, true)
+      if (created && doChown)
+        chownr(created, uid, gid, er => done(er))
+      else if (needChmod)
+        fs.chmod(dir, mode, cb)
+      else
+        cb()
+    }
+  }
+
+  if (cache && cache.get(dir) === true)
+    return done()
+
+  if (dir === cwd)
+    return fs.stat(dir, (er, st) => {
+      if (er || !st.isDirectory())
+        er = new CwdError(dir, er && er.code || 'ENOTDIR')
+      done(er)
+    })
+
+  if (preserve)
+    return mkdirp(dir, mode, done)
+
+  const sub = path.relative(cwd, dir)
+  const parts = sub.split(/\/|\\/)
+  mkdir_(cwd, parts, mode, cache, unlink, cwd, null, done)
+}
+
+const mkdir_ = (base, parts, mode, cache, unlink, cwd, created, cb) => {
+  if (!parts.length)
+    return cb(null, created)
+  const p = parts.shift()
+  const part = base + '/' + p
+  if (cache.get(part))
+    return mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
+  fs.mkdir(part, mode, onmkdir(part, parts, mode, cache, unlink, cwd, created, cb))
+}
+
+const onmkdir = (part, parts, mode, cache, unlink, cwd, created, cb) => er => {
+  if (er) {
+    if (er.path && path.dirname(er.path) === cwd &&
+        (er.code === 'ENOTDIR' || er.code === 'ENOENT'))
+      return cb(new CwdError(cwd, er.code))
+
+    fs.lstat(part, (statEr, st) => {
+      if (statEr)
+        cb(statEr)
+      else if (st.isDirectory())
+        mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
+      else if (unlink)
+        fs.unlink(part, er => {
+          if (er)
+            return cb(er)
+          fs.mkdir(part, mode, onmkdir(part, parts, mode, cache, unlink, cwd, created, cb))
+        })
+      else if (st.isSymbolicLink())
+        return cb(new SymlinkError(part, part + '/' + parts.join('/')))
+      else
+        cb(er)
+    })
+  } else {
+    created = created || part
+    mkdir_(part, parts, mode, cache, unlink, cwd, created, cb)
+  }
+}
+
+const mkdirSync = module.exports.sync = (dir, opt) => {
+  // if there's any overlap between mask and mode,
+  // then we'll need an explicit chmod
+  const umask = opt.umask
+  const mode = opt.mode | 0o0700
+  const needChmod = (mode & umask) !== 0
+
+  const uid = opt.uid
+  const gid = opt.gid
+  const doChown = typeof uid === 'number' &&
+    typeof gid === 'number' &&
+    ( uid !== opt.processUid || gid !== opt.processGid )
+
+  const preserve = opt.preserve
+  const unlink = opt.unlink
+  const cache = opt.cache
+  const cwd = opt.cwd
+
+  const done = (created) => {
+    cache.set(dir, true)
+    if (created && doChown)
+      chownr.sync(created, uid, gid)
+    if (needChmod)
+      fs.chmodSync(dir, mode)
+  }
+
+  if (cache && cache.get(dir) === true)
+    return done()
+
+  if (dir === cwd) {
+    let ok = false
+    let code = 'ENOTDIR'
+    try {
+      ok = fs.statSync(dir).isDirectory()
+    } catch (er) {
+      code = er.code
+    } finally {
+      if (!ok)
+        throw new CwdError(dir, code)
+    }
+    done()
+    return
+  }
+
+  if (preserve)
+    return done(mkdirp.sync(dir, mode))
+
+  const sub = path.relative(cwd, dir)
+  const parts = sub.split(/\/|\\/)
+  let created = null
+  for (let p = parts.shift(), part = cwd;
+       p && (part += '/' + p);
+       p = parts.shift()) {
+
+    if (cache.get(part))
+      continue
+
+    try {
+      fs.mkdirSync(part, mode)
+      created = created || part
+      cache.set(part, true)
+    } catch (er) {
+      if (er.path && path.dirname(er.path) === cwd &&
+          (er.code === 'ENOTDIR' || er.code === 'ENOENT'))
+        return new CwdError(cwd, er.code)
+
+      const st = fs.lstatSync(part)
+      if (st.isDirectory()) {
+        cache.set(part, true)
+        continue
+      } else if (unlink) {
+        fs.unlinkSync(part)
+        fs.mkdirSync(part, mode)
+        created = created || part
+        cache.set(part, true)
+        continue
+      } else if (st.isSymbolicLink())
+        return new SymlinkError(part, part + '/' + parts.join('/'))
+    }
+  }
+
+  return done(created)
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/mode-fix.js b/node_modules/pacote/node_modules/tar/lib/mode-fix.js
new file mode 100644
index 000000000..3363a3b15
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/mode-fix.js
@@ -0,0 +1,14 @@
+'use strict'
+module.exports = (mode, isDir) => {
+  mode &= 0o7777
+  // if dirs are readable, then they should be listable
+  if (isDir) {
+    if (mode & 0o400)
+      mode |= 0o100
+    if (mode & 0o40)
+      mode |= 0o10
+    if (mode & 0o4)
+      mode |= 0o1
+  }
+  return mode
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/pack.js b/node_modules/pacote/node_modules/tar/lib/pack.js
new file mode 100644
index 000000000..857cea910
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/pack.js
@@ -0,0 +1,404 @@
+'use strict'
+
+const Buffer = require('./buffer.js')
+
+// A readable tar stream creator
+// Technically, this is a transform stream that you write paths into,
+// and tar format comes out of.
+// The `add()` method is like `write()` but returns this,
+// and end() return `this` as well, so you can
+// do `new Pack(opt).add('files').add('dir').end().pipe(output)
+// You could also do something like:
+// streamOfPaths().pipe(new Pack()).pipe(new fs.WriteStream('out.tar'))
+
+class PackJob {
+  constructor (path, absolute) {
+    this.path = path || './'
+    this.absolute = absolute
+    this.entry = null
+    this.stat = null
+    this.readdir = null
+    this.pending = false
+    this.ignore = false
+    this.piped = false
+  }
+}
+
+const MiniPass = require('minipass')
+const zlib = require('minizlib')
+const ReadEntry = require('./read-entry.js')
+const WriteEntry = require('./write-entry.js')
+const WriteEntrySync = WriteEntry.Sync
+const WriteEntryTar = WriteEntry.Tar
+const Yallist = require('yallist')
+const EOF = Buffer.alloc(1024)
+const ONSTAT = Symbol('onStat')
+const ENDED = Symbol('ended')
+const QUEUE = Symbol('queue')
+const CURRENT = Symbol('current')
+const PROCESS = Symbol('process')
+const PROCESSING = Symbol('processing')
+const PROCESSJOB = Symbol('processJob')
+const JOBS = Symbol('jobs')
+const JOBDONE = Symbol('jobDone')
+const ADDFSENTRY = Symbol('addFSEntry')
+const ADDTARENTRY = Symbol('addTarEntry')
+const STAT = Symbol('stat')
+const READDIR = Symbol('readdir')
+const ONREADDIR = Symbol('onreaddir')
+const PIPE = Symbol('pipe')
+const ENTRY = Symbol('entry')
+const ENTRYOPT = Symbol('entryOpt')
+const WRITEENTRYCLASS = Symbol('writeEntryClass')
+const WRITE = Symbol('write')
+const ONDRAIN = Symbol('ondrain')
+
+const fs = require('fs')
+const path = require('path')
+const warner = require('./warn-mixin.js')
+
+const Pack = warner(class Pack extends MiniPass {
+  constructor (opt) {
+    super(opt)
+    opt = opt || Object.create(null)
+    this.opt = opt
+    this.cwd = opt.cwd || process.cwd()
+    this.maxReadSize = opt.maxReadSize
+    this.preservePaths = !!opt.preservePaths
+    this.strict = !!opt.strict
+    this.noPax = !!opt.noPax
+    this.prefix = (opt.prefix || '').replace(/(\\|\/)+$/, '')
+    this.linkCache = opt.linkCache || new Map()
+    this.statCache = opt.statCache || new Map()
+    this.readdirCache = opt.readdirCache || new Map()
+
+    this[WRITEENTRYCLASS] = WriteEntry
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+
+    this.zip = null
+    if (opt.gzip) {
+      if (typeof opt.gzip !== 'object')
+        opt.gzip = {}
+      this.zip = new zlib.Gzip(opt.gzip)
+      this.zip.on('data', chunk => super.write(chunk))
+      this.zip.on('end', _ => super.end())
+      this.zip.on('drain', _ => this[ONDRAIN]())
+      this.on('resume', _ => this.zip.resume())
+    } else
+      this.on('drain', this[ONDRAIN])
+
+    this.portable = !!opt.portable
+    this.noDirRecurse = !!opt.noDirRecurse
+    this.follow = !!opt.follow
+    this.noMtime = !!opt.noMtime
+    this.mtime = opt.mtime || null
+
+    this.filter = typeof opt.filter === 'function' ? opt.filter : _ => true
+
+    this[QUEUE] = new Yallist
+    this[JOBS] = 0
+    this.jobs = +opt.jobs || 4
+    this[PROCESSING] = false
+    this[ENDED] = false
+  }
+
+  [WRITE] (chunk) {
+    return super.write(chunk)
+  }
+
+  add (path) {
+    this.write(path)
+    return this
+  }
+
+  end (path) {
+    if (path)
+      this.write(path)
+    this[ENDED] = true
+    this[PROCESS]()
+    return this
+  }
+
+  write (path) {
+    if (this[ENDED])
+      throw new Error('write after end')
+
+    if (path instanceof ReadEntry)
+      this[ADDTARENTRY](path)
+    else
+      this[ADDFSENTRY](path)
+    return this.flowing
+  }
+
+  [ADDTARENTRY] (p) {
+    const absolute = path.resolve(this.cwd, p.path)
+    if (this.prefix)
+      p.path = this.prefix + '/' + p.path.replace(/^\.(\/+|$)/, '')
+
+    // in this case, we don't have to wait for the stat
+    if (!this.filter(p.path, p))
+      p.resume()
+    else {
+      const job = new PackJob(p.path, absolute, false)
+      job.entry = new WriteEntryTar(p, this[ENTRYOPT](job))
+      job.entry.on('end', _ => this[JOBDONE](job))
+      this[JOBS] += 1
+      this[QUEUE].push(job)
+    }
+
+    this[PROCESS]()
+  }
+
+  [ADDFSENTRY] (p) {
+    const absolute = path.resolve(this.cwd, p)
+    if (this.prefix)
+      p = this.prefix + '/' + p.replace(/^\.(\/+|$)/, '')
+
+    this[QUEUE].push(new PackJob(p, absolute))
+    this[PROCESS]()
+  }
+
+  [STAT] (job) {
+    job.pending = true
+    this[JOBS] += 1
+    const stat = this.follow ? 'stat' : 'lstat'
+    fs[stat](job.absolute, (er, stat) => {
+      job.pending = false
+      this[JOBS] -= 1
+      if (er)
+        this.emit('error', er)
+      else
+        this[ONSTAT](job, stat)
+    })
+  }
+
+  [ONSTAT] (job, stat) {
+    this.statCache.set(job.absolute, stat)
+    job.stat = stat
+
+    // now we have the stat, we can filter it.
+    if (!this.filter(job.path, stat))
+      job.ignore = true
+
+    this[PROCESS]()
+  }
+
+  [READDIR] (job) {
+    job.pending = true
+    this[JOBS] += 1
+    fs.readdir(job.absolute, (er, entries) => {
+      job.pending = false
+      this[JOBS] -= 1
+      if (er)
+        return this.emit('error', er)
+      this[ONREADDIR](job, entries)
+    })
+  }
+
+  [ONREADDIR] (job, entries) {
+    this.readdirCache.set(job.absolute, entries)
+    job.readdir = entries
+    this[PROCESS]()
+  }
+
+  [PROCESS] () {
+    if (this[PROCESSING])
+      return
+
+    this[PROCESSING] = true
+    for (let w = this[QUEUE].head;
+         w !== null && this[JOBS] < this.jobs;
+         w = w.next) {
+      this[PROCESSJOB](w.value)
+      if (w.value.ignore) {
+        const p = w.next
+        this[QUEUE].removeNode(w)
+        w.next = p
+      }
+    }
+
+    this[PROCESSING] = false
+
+    if (this[ENDED] && !this[QUEUE].length && this[JOBS] === 0) {
+      if (this.zip)
+        this.zip.end(EOF)
+      else {
+        super.write(EOF)
+        super.end()
+      }
+    }
+  }
+
+  get [CURRENT] () {
+    return this[QUEUE] && this[QUEUE].head && this[QUEUE].head.value
+  }
+
+  [JOBDONE] (job) {
+    this[QUEUE].shift()
+    this[JOBS] -= 1
+    this[PROCESS]()
+  }
+
+  [PROCESSJOB] (job) {
+    if (job.pending)
+      return
+
+    if (job.entry) {
+      if (job === this[CURRENT] && !job.piped)
+        this[PIPE](job)
+      return
+    }
+
+    if (!job.stat) {
+      if (this.statCache.has(job.absolute))
+        this[ONSTAT](job, this.statCache.get(job.absolute))
+      else
+        this[STAT](job)
+    }
+    if (!job.stat)
+      return
+
+    // filtered out!
+    if (job.ignore)
+      return
+
+    if (!this.noDirRecurse && job.stat.isDirectory() && !job.readdir) {
+      if (this.readdirCache.has(job.absolute))
+        this[ONREADDIR](job, this.readdirCache.get(job.absolute))
+      else
+        this[READDIR](job)
+      if (!job.readdir)
+        return
+    }
+
+    // we know it doesn't have an entry, because that got checked above
+    job.entry = this[ENTRY](job)
+    if (!job.entry) {
+      job.ignore = true
+      return
+    }
+
+    if (job === this[CURRENT] && !job.piped)
+      this[PIPE](job)
+  }
+
+  [ENTRYOPT] (job) {
+    return {
+      onwarn: (msg, data) => {
+        this.warn(msg, data)
+      },
+      noPax: this.noPax,
+      cwd: this.cwd,
+      absolute: job.absolute,
+      preservePaths: this.preservePaths,
+      maxReadSize: this.maxReadSize,
+      strict: this.strict,
+      portable: this.portable,
+      linkCache: this.linkCache,
+      statCache: this.statCache,
+      noMtime: this.noMtime,
+      mtime: this.mtime
+    }
+  }
+
+  [ENTRY] (job) {
+    this[JOBS] += 1
+    try {
+      return new this[WRITEENTRYCLASS](job.path, this[ENTRYOPT](job))
+        .on('end', () => this[JOBDONE](job))
+        .on('error', er => this.emit('error', er))
+    } catch (er) {
+      this.emit('error', er)
+    }
+  }
+
+  [ONDRAIN] () {
+    if (this[CURRENT] && this[CURRENT].entry)
+      this[CURRENT].entry.resume()
+  }
+
+  // like .pipe() but using super, because our write() is special
+  [PIPE] (job) {
+    job.piped = true
+
+    if (job.readdir)
+      job.readdir.forEach(entry => {
+        const p = this.prefix ?
+          job.path.slice(this.prefix.length + 1) || './'
+          : job.path
+
+        const base = p === './' ? '' : p.replace(/\/*$/, '/')
+        this[ADDFSENTRY](base + entry)
+      })
+
+    const source = job.entry
+    const zip = this.zip
+
+    if (zip)
+      source.on('data', chunk => {
+        if (!zip.write(chunk))
+          source.pause()
+      })
+    else
+      source.on('data', chunk => {
+        if (!super.write(chunk))
+          source.pause()
+      })
+  }
+
+  pause () {
+    if (this.zip)
+      this.zip.pause()
+    return super.pause()
+  }
+})
+
+class PackSync extends Pack {
+  constructor (opt) {
+    super(opt)
+    this[WRITEENTRYCLASS] = WriteEntrySync
+  }
+
+  // pause/resume are no-ops in sync streams.
+  pause () {}
+  resume () {}
+
+  [STAT] (job) {
+    const stat = this.follow ? 'statSync' : 'lstatSync'
+    this[ONSTAT](job, fs[stat](job.absolute))
+  }
+
+  [READDIR] (job, stat) {
+    this[ONREADDIR](job, fs.readdirSync(job.absolute))
+  }
+
+  // gotta get it all in this tick
+  [PIPE] (job) {
+    const source = job.entry
+    const zip = this.zip
+
+    if (job.readdir)
+      job.readdir.forEach(entry => {
+        const p = this.prefix ?
+          job.path.slice(this.prefix.length + 1) || './'
+          : job.path
+
+        const base = p === './' ? '' : p.replace(/\/*$/, '/')
+        this[ADDFSENTRY](base + entry)
+      })
+
+    if (zip)
+      source.on('data', chunk => {
+        zip.write(chunk)
+      })
+    else
+      source.on('data', chunk => {
+        super[WRITE](chunk)
+      })
+  }
+}
+
+Pack.Sync = PackSync
+
+module.exports = Pack
diff --git a/node_modules/pacote/node_modules/tar/lib/parse.js b/node_modules/pacote/node_modules/tar/lib/parse.js
new file mode 100644
index 000000000..43d4383dd
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/parse.js
@@ -0,0 +1,428 @@
+'use strict'
+
+// this[BUFFER] is the remainder of a chunk if we're waiting for
+// the full 512 bytes of a header to come in.  We will Buffer.concat()
+// it to the next write(), which is a mem copy, but a small one.
+//
+// this[QUEUE] is a Yallist of entries that haven't been emitted
+// yet this can only get filled up if the user keeps write()ing after
+// a write() returns false, or does a write() with more than one entry
+//
+// We don't buffer chunks, we always parse them and either create an
+// entry, or push it into the active entry.  The ReadEntry class knows
+// to throw data away if .ignore=true
+//
+// Shift entry off the buffer when it emits 'end', and emit 'entry' for
+// the next one in the list.
+//
+// At any time, we're pushing body chunks into the entry at WRITEENTRY,
+// and waiting for 'end' on the entry at READENTRY
+//
+// ignored entries get .resume() called on them straight away
+
+const warner = require('./warn-mixin.js')
+const path = require('path')
+const Header = require('./header.js')
+const EE = require('events')
+const Yallist = require('yallist')
+const maxMetaEntrySize = 1024 * 1024
+const Entry = require('./read-entry.js')
+const Pax = require('./pax.js')
+const zlib = require('minizlib')
+const Buffer = require('./buffer.js')
+
+const gzipHeader = Buffer.from([0x1f, 0x8b])
+const STATE = Symbol('state')
+const WRITEENTRY = Symbol('writeEntry')
+const READENTRY = Symbol('readEntry')
+const NEXTENTRY = Symbol('nextEntry')
+const PROCESSENTRY = Symbol('processEntry')
+const EX = Symbol('extendedHeader')
+const GEX = Symbol('globalExtendedHeader')
+const META = Symbol('meta')
+const EMITMETA = Symbol('emitMeta')
+const BUFFER = Symbol('buffer')
+const QUEUE = Symbol('queue')
+const ENDED = Symbol('ended')
+const EMITTEDEND = Symbol('emittedEnd')
+const EMIT = Symbol('emit')
+const UNZIP = Symbol('unzip')
+const CONSUMECHUNK = Symbol('consumeChunk')
+const CONSUMECHUNKSUB = Symbol('consumeChunkSub')
+const CONSUMEBODY = Symbol('consumeBody')
+const CONSUMEMETA = Symbol('consumeMeta')
+const CONSUMEHEADER = Symbol('consumeHeader')
+const CONSUMING = Symbol('consuming')
+const BUFFERCONCAT = Symbol('bufferConcat')
+const MAYBEEND = Symbol('maybeEnd')
+const WRITING = Symbol('writing')
+const ABORTED = Symbol('aborted')
+const DONE = Symbol('onDone')
+
+const noop = _ => true
+
+module.exports = warner(class Parser extends EE {
+  constructor (opt) {
+    opt = opt || {}
+    super(opt)
+
+    if (opt.ondone)
+      this.on(DONE, opt.ondone)
+    else
+      this.on(DONE, _ => {
+        this.emit('prefinish')
+        this.emit('finish')
+        this.emit('end')
+        this.emit('close')
+      })
+
+    this.strict = !!opt.strict
+    this.maxMetaEntrySize = opt.maxMetaEntrySize || maxMetaEntrySize
+    this.filter = typeof opt.filter === 'function' ? opt.filter : noop
+
+    // have to set this so that streams are ok piping into it
+    this.writable = true
+    this.readable = false
+
+    this[QUEUE] = new Yallist()
+    this[BUFFER] = null
+    this[READENTRY] = null
+    this[WRITEENTRY] = null
+    this[STATE] = 'begin'
+    this[META] = ''
+    this[EX] = null
+    this[GEX] = null
+    this[ENDED] = false
+    this[UNZIP] = null
+    this[ABORTED] = false
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+    if (typeof opt.onentry === 'function')
+      this.on('entry', opt.onentry)
+  }
+
+  [CONSUMEHEADER] (chunk, position) {
+    let header
+    try {
+      header = new Header(chunk, position, this[EX], this[GEX])
+    } catch (er) {
+      return this.warn('invalid entry', er)
+    }
+
+    if (header.nullBlock)
+      this[EMIT]('nullBlock')
+    else if (!header.cksumValid)
+      this.warn('invalid entry', header)
+    else if (!header.path)
+      this.warn('invalid: path is required', header)
+    else {
+      const type = header.type
+      if (/^(Symbolic)?Link$/.test(type) && !header.linkpath)
+        this.warn('invalid: linkpath required', header)
+      else if (!/^(Symbolic)?Link$/.test(type) && header.linkpath)
+        this.warn('invalid: linkpath forbidden', header)
+      else {
+        const entry = this[WRITEENTRY] = new Entry(header, this[EX], this[GEX])
+
+        if (entry.meta) {
+          if (entry.size > this.maxMetaEntrySize) {
+            entry.ignore = true
+            this[EMIT]('ignoredEntry', entry)
+            this[STATE] = 'ignore'
+          } else if (entry.size > 0) {
+            this[META] = ''
+            entry.on('data', c => this[META] += c)
+            this[STATE] = 'meta'
+          }
+        } else {
+
+          this[EX] = null
+          entry.ignore = entry.ignore || !this.filter(entry.path, entry)
+          if (entry.ignore) {
+            this[EMIT]('ignoredEntry', entry)
+            this[STATE] = entry.remain ? 'ignore' : 'begin'
+          } else {
+            if (entry.remain)
+              this[STATE] = 'body'
+            else {
+              this[STATE] = 'begin'
+              entry.end()
+            }
+
+            if (!this[READENTRY]) {
+              this[QUEUE].push(entry)
+              this[NEXTENTRY]()
+            } else
+              this[QUEUE].push(entry)
+          }
+        }
+      }
+    }
+  }
+
+  [PROCESSENTRY] (entry) {
+    let go = true
+
+    if (!entry) {
+      this[READENTRY] = null
+      go = false
+    } else if (Array.isArray(entry))
+      this.emit.apply(this, entry)
+    else {
+      this[READENTRY] = entry
+      this.emit('entry', entry)
+      if (!entry.emittedEnd) {
+        entry.on('end', _ => this[NEXTENTRY]())
+        go = false
+      }
+    }
+
+    return go
+  }
+
+  [NEXTENTRY] () {
+    do {} while (this[PROCESSENTRY](this[QUEUE].shift()))
+
+    if (!this[QUEUE].length) {
+      // At this point, there's nothing in the queue, but we may have an
+      // entry which is being consumed (readEntry).
+      // If we don't, then we definitely can handle more data.
+      // If we do, and either it's flowing, or it has never had any data
+      // written to it, then it needs more.
+      // The only other possibility is that it has returned false from a
+      // write() call, so we wait for the next drain to continue.
+      const re = this[READENTRY]
+      const drainNow = !re || re.flowing || re.size === re.remain
+      if (drainNow) {
+        if (!this[WRITING])
+          this.emit('drain')
+      } else
+        re.once('drain', _ => this.emit('drain'))
+     }
+  }
+
+  [CONSUMEBODY] (chunk, position) {
+    // write up to but no  more than writeEntry.blockRemain
+    const entry = this[WRITEENTRY]
+    const br = entry.blockRemain
+    const c = (br >= chunk.length && position === 0) ? chunk
+      : chunk.slice(position, position + br)
+
+    entry.write(c)
+
+    if (!entry.blockRemain) {
+      this[STATE] = 'begin'
+      this[WRITEENTRY] = null
+      entry.end()
+    }
+
+    return c.length
+  }
+
+  [CONSUMEMETA] (chunk, position) {
+    const entry = this[WRITEENTRY]
+    const ret = this[CONSUMEBODY](chunk, position)
+
+    // if we finished, then the entry is reset
+    if (!this[WRITEENTRY])
+      this[EMITMETA](entry)
+
+    return ret
+  }
+
+  [EMIT] (ev, data, extra) {
+    if (!this[QUEUE].length && !this[READENTRY])
+      this.emit(ev, data, extra)
+    else
+      this[QUEUE].push([ev, data, extra])
+  }
+
+  [EMITMETA] (entry) {
+    this[EMIT]('meta', this[META])
+    switch (entry.type) {
+      case 'ExtendedHeader':
+      case 'OldExtendedHeader':
+        this[EX] = Pax.parse(this[META], this[EX], false)
+        break
+
+      case 'GlobalExtendedHeader':
+        this[GEX] = Pax.parse(this[META], this[GEX], true)
+        break
+
+      case 'NextFileHasLongPath':
+      case 'OldGnuLongPath':
+        this[EX] = this[EX] || Object.create(null)
+        this[EX].path = this[META].replace(/\0.*/, '')
+        break
+
+      case 'NextFileHasLongLinkpath':
+        this[EX] = this[EX] || Object.create(null)
+        this[EX].linkpath = this[META].replace(/\0.*/, '')
+        break
+
+      /* istanbul ignore next */
+      default: throw new Error('unknown meta: ' + entry.type)
+    }
+  }
+
+  abort (msg, error) {
+    this[ABORTED] = true
+    this.warn(msg, error)
+    this.emit('abort', error)
+    this.emit('error', error)
+  }
+
+  write (chunk) {
+    if (this[ABORTED])
+      return
+
+    // first write, might be gzipped
+    if (this[UNZIP] === null && chunk) {
+      if (this[BUFFER]) {
+        chunk = Buffer.concat([this[BUFFER], chunk])
+        this[BUFFER] = null
+      }
+      if (chunk.length < gzipHeader.length) {
+        this[BUFFER] = chunk
+        return true
+      }
+      for (let i = 0; this[UNZIP] === null && i < gzipHeader.length; i++) {
+        if (chunk[i] !== gzipHeader[i])
+          this[UNZIP] = false
+      }
+      if (this[UNZIP] === null) {
+        const ended = this[ENDED]
+        this[ENDED] = false
+        this[UNZIP] = new zlib.Unzip()
+        this[UNZIP].on('data', chunk => this[CONSUMECHUNK](chunk))
+        this[UNZIP].on('error', er =>
+          this.abort(er.message, er))
+        this[UNZIP].on('end', _ => {
+          this[ENDED] = true
+          this[CONSUMECHUNK]()
+        })
+        this[WRITING] = true
+        const ret = this[UNZIP][ended ? 'end' : 'write' ](chunk)
+        this[WRITING] = false
+        return ret
+      }
+    }
+
+    this[WRITING] = true
+    if (this[UNZIP])
+      this[UNZIP].write(chunk)
+    else
+      this[CONSUMECHUNK](chunk)
+    this[WRITING] = false
+
+    // return false if there's a queue, or if the current entry isn't flowing
+    const ret =
+      this[QUEUE].length ? false :
+      this[READENTRY] ? this[READENTRY].flowing :
+      true
+
+    // if we have no queue, then that means a clogged READENTRY
+    if (!ret && !this[QUEUE].length)
+      this[READENTRY].once('drain', _ => this.emit('drain'))
+
+    return ret
+  }
+
+  [BUFFERCONCAT] (c) {
+    if (c && !this[ABORTED])
+      this[BUFFER] = this[BUFFER] ? Buffer.concat([this[BUFFER], c]) : c
+  }
+
+  [MAYBEEND] () {
+    if (this[ENDED] &&
+        !this[EMITTEDEND] &&
+        !this[ABORTED] &&
+        !this[CONSUMING]) {
+      this[EMITTEDEND] = true
+      const entry = this[WRITEENTRY]
+      if (entry && entry.blockRemain) {
+        const have = this[BUFFER] ? this[BUFFER].length : 0
+        this.warn('Truncated input (needed ' + entry.blockRemain +
+                  ' more bytes, only ' + have + ' available)', entry)
+        if (this[BUFFER])
+          entry.write(this[BUFFER])
+        entry.end()
+      }
+      this[EMIT](DONE)
+    }
+  }
+
+  [CONSUMECHUNK] (chunk) {
+    if (this[CONSUMING]) {
+      this[BUFFERCONCAT](chunk)
+    } else if (!chunk && !this[BUFFER]) {
+      this[MAYBEEND]()
+    } else {
+      this[CONSUMING] = true
+      if (this[BUFFER]) {
+        this[BUFFERCONCAT](chunk)
+        const c = this[BUFFER]
+        this[BUFFER] = null
+        this[CONSUMECHUNKSUB](c)
+      } else {
+        this[CONSUMECHUNKSUB](chunk)
+      }
+
+      while (this[BUFFER] && this[BUFFER].length >= 512 && !this[ABORTED]) {
+        const c = this[BUFFER]
+        this[BUFFER] = null
+        this[CONSUMECHUNKSUB](c)
+      }
+      this[CONSUMING] = false
+    }
+
+    if (!this[BUFFER] || this[ENDED])
+      this[MAYBEEND]()
+  }
+
+  [CONSUMECHUNKSUB] (chunk) {
+    // we know that we are in CONSUMING mode, so anything written goes into
+    // the buffer.  Advance the position and put any remainder in the buffer.
+    let position = 0
+    let length = chunk.length
+    while (position + 512 <= length && !this[ABORTED]) {
+      switch (this[STATE]) {
+        case 'begin':
+          this[CONSUMEHEADER](chunk, position)
+          position += 512
+          break
+
+        case 'ignore':
+        case 'body':
+          position += this[CONSUMEBODY](chunk, position)
+          break
+
+        case 'meta':
+          position += this[CONSUMEMETA](chunk, position)
+          break
+
+        /* istanbul ignore next */
+        default:
+          throw new Error('invalid state: ' + this[STATE])
+      }
+    }
+
+    if (position < length) {
+      if (this[BUFFER])
+        this[BUFFER] = Buffer.concat([chunk.slice(position), this[BUFFER]])
+      else
+        this[BUFFER] = chunk.slice(position)
+    }
+  }
+
+  end (chunk) {
+    if (!this[ABORTED]) {
+      if (this[UNZIP])
+        this[UNZIP].end(chunk)
+      else {
+        this[ENDED] = true
+        this.write(chunk)
+      }
+    }
+  }
+})
diff --git a/node_modules/pacote/node_modules/tar/lib/pax.js b/node_modules/pacote/node_modules/tar/lib/pax.js
new file mode 100644
index 000000000..9d7e4aba5
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/pax.js
@@ -0,0 +1,146 @@
+'use strict'
+const Buffer = require('./buffer.js')
+const Header = require('./header.js')
+const path = require('path')
+
+class Pax {
+  constructor (obj, global) {
+    this.atime = obj.atime || null
+    this.charset = obj.charset || null
+    this.comment = obj.comment || null
+    this.ctime = obj.ctime || null
+    this.gid = obj.gid || null
+    this.gname = obj.gname || null
+    this.linkpath = obj.linkpath || null
+    this.mtime = obj.mtime || null
+    this.path = obj.path || null
+    this.size = obj.size || null
+    this.uid = obj.uid || null
+    this.uname = obj.uname || null
+    this.dev = obj.dev || null
+    this.ino = obj.ino || null
+    this.nlink = obj.nlink || null
+    this.global = global || false
+  }
+
+  encode () {
+    const body = this.encodeBody()
+    if (body === '')
+      return null
+
+    const bodyLen = Buffer.byteLength(body)
+    // round up to 512 bytes
+    // add 512 for header
+    const bufLen = 512 * Math.ceil(1 + bodyLen / 512)
+    const buf = Buffer.allocUnsafe(bufLen)
+
+    // 0-fill the header section, it might not hit every field
+    for (let i = 0; i < 512; i++) {
+      buf[i] = 0
+    }
+
+    new Header({
+      // XXX split the path
+      // then the path should be PaxHeader + basename, but less than 99,
+      // prepend with the dirname
+      path: ('PaxHeader/' + path.basename(this.path)).slice(0, 99),
+      mode: this.mode || 0o644,
+      uid: this.uid || null,
+      gid: this.gid || null,
+      size: bodyLen,
+      mtime: this.mtime || null,
+      type: this.global ? 'GlobalExtendedHeader' : 'ExtendedHeader',
+      linkpath: '',
+      uname: this.uname || '',
+      gname: this.gname || '',
+      devmaj: 0,
+      devmin: 0,
+      atime: this.atime || null,
+      ctime: this.ctime || null
+    }).encode(buf)
+
+    buf.write(body, 512, bodyLen, 'utf8')
+
+    // null pad after the body
+    for (let i = bodyLen + 512; i < buf.length; i++) {
+      buf[i] = 0
+    }
+
+    return buf
+  }
+
+  encodeBody () {
+    return (
+      this.encodeField('path') +
+      this.encodeField('ctime') +
+      this.encodeField('atime') +
+      this.encodeField('dev') +
+      this.encodeField('ino') +
+      this.encodeField('nlink') +
+      this.encodeField('charset') +
+      this.encodeField('comment') +
+      this.encodeField('gid') +
+      this.encodeField('gname') +
+      this.encodeField('linkpath') +
+      this.encodeField('mtime') +
+      this.encodeField('size') +
+      this.encodeField('uid') +
+      this.encodeField('uname')
+    )
+  }
+
+  encodeField (field) {
+    if (this[field] === null || this[field] === undefined)
+      return ''
+    const v = this[field] instanceof Date ? this[field].getTime() / 1000
+      : this[field]
+    const s = ' ' +
+      (field === 'dev' || field === 'ino' || field === 'nlink'
+       ? 'SCHILY.' : '') +
+      field + '=' + v + '\n'
+    const byteLen = Buffer.byteLength(s)
+    // the digits includes the length of the digits in ascii base-10
+    // so if it's 9 characters, then adding 1 for the 9 makes it 10
+    // which makes it 11 chars.
+    let digits = Math.floor(Math.log(byteLen) / Math.log(10)) + 1
+    if (byteLen + digits >= Math.pow(10, digits))
+      digits += 1
+    const len = digits + byteLen
+    return len + s
+  }
+}
+
+Pax.parse = (string, ex, g) => new Pax(merge(parseKV(string), ex), g)
+
+const merge = (a, b) =>
+  b ? Object.keys(a).reduce((s, k) => (s[k] = a[k], s), b) : a
+
+const parseKV = string =>
+  string
+    .replace(/\n$/, '')
+    .split('\n')
+    .reduce(parseKVLine, Object.create(null))
+
+const parseKVLine = (set, line) => {
+  const n = parseInt(line, 10)
+
+  // XXX Values with \n in them will fail this.
+  // Refactor to not be a naive line-by-line parse.
+  if (n !== Buffer.byteLength(line) + 1)
+    return set
+
+  line = line.substr((n + ' ').length)
+  const kv = line.split('=')
+  const k = kv.shift().replace(/^SCHILY\.(dev|ino|nlink)/, '$1')
+  if (!k)
+    return set
+
+  const v = kv.join('=')
+  set[k] = /^([A-Z]+\.)?([mac]|birth|creation)time$/.test(k)
+    ?  new Date(v * 1000)
+    : /^[0-9]+$/.test(v) ? +v
+    : v
+  return set
+}
+
+module.exports = Pax
diff --git a/node_modules/pacote/node_modules/tar/lib/read-entry.js b/node_modules/pacote/node_modules/tar/lib/read-entry.js
new file mode 100644
index 000000000..8acee94ba
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/read-entry.js
@@ -0,0 +1,98 @@
+'use strict'
+const types = require('./types.js')
+const MiniPass = require('minipass')
+
+const SLURP = Symbol('slurp')
+module.exports = class ReadEntry extends MiniPass {
+  constructor (header, ex, gex) {
+    super()
+    // read entries always start life paused.  this is to avoid the
+    // situation where Minipass's auto-ending empty streams results
+    // in an entry ending before we're ready for it.
+    this.pause()
+    this.extended = ex
+    this.globalExtended = gex
+    this.header = header
+    this.startBlockSize = 512 * Math.ceil(header.size / 512)
+    this.blockRemain = this.startBlockSize
+    this.remain = header.size
+    this.type = header.type
+    this.meta = false
+    this.ignore = false
+    switch (this.type) {
+      case 'File':
+      case 'OldFile':
+      case 'Link':
+      case 'SymbolicLink':
+      case 'CharacterDevice':
+      case 'BlockDevice':
+      case 'Directory':
+      case 'FIFO':
+      case 'ContiguousFile':
+      case 'GNUDumpDir':
+        break
+
+      case 'NextFileHasLongLinkpath':
+      case 'NextFileHasLongPath':
+      case 'OldGnuLongPath':
+      case 'GlobalExtendedHeader':
+      case 'ExtendedHeader':
+      case 'OldExtendedHeader':
+        this.meta = true
+        break
+
+      // NOTE: gnutar and bsdtar treat unrecognized types as 'File'
+      // it may be worth doing the same, but with a warning.
+      default:
+        this.ignore = true
+    }
+
+    this.path = header.path
+    this.mode = header.mode
+    if (this.mode)
+      this.mode = this.mode & 0o7777
+    this.uid = header.uid
+    this.gid = header.gid
+    this.uname = header.uname
+    this.gname = header.gname
+    this.size = header.size
+    this.mtime = header.mtime
+    this.atime = header.atime
+    this.ctime = header.ctime
+    this.linkpath = header.linkpath
+    this.uname = header.uname
+    this.gname = header.gname
+
+    if (ex) this[SLURP](ex)
+    if (gex) this[SLURP](gex, true)
+  }
+
+  write (data) {
+    const writeLen = data.length
+    if (writeLen > this.blockRemain)
+      throw new Error('writing more to entry than is appropriate')
+
+    const r = this.remain
+    const br = this.blockRemain
+    this.remain = Math.max(0, r - writeLen)
+    this.blockRemain = Math.max(0, br - writeLen)
+    if (this.ignore)
+      return true
+
+    if (r >= writeLen)
+      return super.write(data)
+
+    // r < writeLen
+    return super.write(data.slice(0, r))
+  }
+
+  [SLURP] (ex, global) {
+    for (let k in ex) {
+      // we slurp in everything except for the path attribute in
+      // a global extended header, because that's weird.
+      if (ex[k] !== null && ex[k] !== undefined &&
+          !(global && k === 'path'))
+        this[k] = ex[k]
+    }
+  }
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/replace.js b/node_modules/pacote/node_modules/tar/lib/replace.js
new file mode 100644
index 000000000..571cee94a
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/replace.js
@@ -0,0 +1,220 @@
+'use strict'
+const Buffer = require('./buffer.js')
+
+// tar -r
+const hlo = require('./high-level-opt.js')
+const Pack = require('./pack.js')
+const Parse = require('./parse.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const t = require('./list.js')
+const path = require('path')
+
+// starting at the head of the file, read a Header
+// If the checksum is invalid, that's our position to start writing
+// If it is, jump forward by the specified size (round up to 512)
+// and try again.
+// Write the new Pack stream starting there.
+
+const Header = require('./header.js')
+
+const r = module.exports = (opt_, files, cb) => {
+  const opt = hlo(opt_)
+
+  if (!opt.file)
+    throw new TypeError('file is required')
+
+  if (opt.gzip)
+    throw new TypeError('cannot append to compressed archives')
+
+  if (!files || !Array.isArray(files) || !files.length)
+    throw new TypeError('no files or directories specified')
+
+  files = Array.from(files)
+
+  return opt.sync ? replaceSync(opt, files)
+    : replace(opt, files, cb)
+}
+
+const replaceSync = (opt, files) => {
+  const p = new Pack.Sync(opt)
+
+  let threw = true
+  let fd
+  let position
+
+  try {
+    try {
+      fd = fs.openSync(opt.file, 'r+')
+    } catch (er) {
+      if (er.code === 'ENOENT')
+        fd = fs.openSync(opt.file, 'w+')
+      else
+        throw er
+    }
+
+    const st = fs.fstatSync(fd)
+    const headBuf = Buffer.alloc(512)
+
+    POSITION: for (position = 0; position < st.size; position += 512) {
+      for (let bufPos = 0, bytes = 0; bufPos < 512; bufPos += bytes) {
+        bytes = fs.readSync(
+          fd, headBuf, bufPos, headBuf.length - bufPos, position + bufPos
+        )
+
+        if (position === 0 && headBuf[0] === 0x1f && headBuf[1] === 0x8b)
+          throw new Error('cannot append to compressed archives')
+
+        if (!bytes)
+          break POSITION
+      }
+
+      let h = new Header(headBuf)
+      if (!h.cksumValid)
+        break
+      let entryBlockSize = 512 * Math.ceil(h.size / 512)
+      if (position + entryBlockSize + 512 > st.size)
+        break
+      // the 512 for the header we just parsed will be added as well
+      // also jump ahead all the blocks for the body
+      position += entryBlockSize
+      if (opt.mtimeCache)
+        opt.mtimeCache.set(h.path, h.mtime)
+    }
+    threw = false
+
+    streamSync(opt, p, position, fd, files)
+  } finally {
+    if (threw)
+      try { fs.closeSync(fd) } catch (er) {}
+  }
+}
+
+const streamSync = (opt, p, position, fd, files) => {
+  const stream = new fsm.WriteStreamSync(opt.file, {
+    fd: fd,
+    start: position
+  })
+  p.pipe(stream)
+  addFilesSync(p, files)
+}
+
+const replace = (opt, files, cb) => {
+  files = Array.from(files)
+  const p = new Pack(opt)
+
+  const getPos = (fd, size, cb_) => {
+    const cb = (er, pos) => {
+      if (er)
+        fs.close(fd, _ => cb_(er))
+      else
+        cb_(null, pos)
+    }
+
+    let position = 0
+    if (size === 0)
+      return cb(null, 0)
+
+    let bufPos = 0
+    const headBuf = Buffer.alloc(512)
+    const onread = (er, bytes) => {
+      if (er)
+        return cb(er)
+      bufPos += bytes
+      if (bufPos < 512 && bytes)
+        return fs.read(
+          fd, headBuf, bufPos, headBuf.length - bufPos,
+          position + bufPos, onread
+        )
+
+      if (position === 0 && headBuf[0] === 0x1f && headBuf[1] === 0x8b)
+        return cb(new Error('cannot append to compressed archives'))
+
+      // truncated header
+      if (bufPos < 512)
+        return cb(null, position)
+
+      const h = new Header(headBuf)
+      if (!h.cksumValid)
+        return cb(null, position)
+
+      const entryBlockSize = 512 * Math.ceil(h.size / 512)
+      if (position + entryBlockSize + 512 > size)
+        return cb(null, position)
+
+      position += entryBlockSize + 512
+      if (position >= size)
+        return cb(null, position)
+
+      if (opt.mtimeCache)
+        opt.mtimeCache.set(h.path, h.mtime)
+      bufPos = 0
+      fs.read(fd, headBuf, 0, 512, position, onread)
+    }
+    fs.read(fd, headBuf, 0, 512, position, onread)
+  }
+
+  const promise = new Promise((resolve, reject) => {
+    p.on('error', reject)
+    let flag = 'r+'
+    const onopen = (er, fd) => {
+      if (er && er.code === 'ENOENT' && flag === 'r+') {
+        flag = 'w+'
+        return fs.open(opt.file, flag, onopen)
+      }
+
+      if (er)
+        return reject(er)
+
+      fs.fstat(fd, (er, st) => {
+        if (er)
+          return reject(er)
+        getPos(fd, st.size, (er, position) => {
+          if (er)
+            return reject(er)
+          const stream = new fsm.WriteStream(opt.file, {
+            fd: fd,
+            start: position
+          })
+          p.pipe(stream)
+          stream.on('error', reject)
+          stream.on('close', resolve)
+          addFilesAsync(p, files)
+        })
+      })
+    }
+    fs.open(opt.file, flag, onopen)
+  })
+
+  return cb ? promise.then(cb, cb) : promise
+}
+
+const addFilesSync = (p, files) => {
+  files.forEach(file => {
+    if (file.charAt(0) === '@')
+      t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        sync: true,
+        noResume: true,
+        onentry: entry => p.add(entry)
+      })
+    else
+      p.add(file)
+  })
+  p.end()
+}
+
+const addFilesAsync = (p, files) => {
+  while (files.length) {
+    const file = files.shift()
+    if (file.charAt(0) === '@')
+      return t({
+        file: path.resolve(p.cwd, file.substr(1)),
+        noResume: true,
+        onentry: entry => p.add(entry)
+      }).then(_ => addFilesAsync(p, files))
+    else
+      p.add(file)
+  }
+  p.end()
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/types.js b/node_modules/pacote/node_modules/tar/lib/types.js
new file mode 100644
index 000000000..df425652b
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/types.js
@@ -0,0 +1,44 @@
+'use strict'
+// map types from key to human-friendly name
+exports.name = new Map([
+  ['0', 'File'],
+  // same as File
+  ['', 'OldFile'],
+  ['1', 'Link'],
+  ['2', 'SymbolicLink'],
+  // Devices and FIFOs aren't fully supported
+  // they are parsed, but skipped when unpacking
+  ['3', 'CharacterDevice'],
+  ['4', 'BlockDevice'],
+  ['5', 'Directory'],
+  ['6', 'FIFO'],
+  // same as File
+  ['7', 'ContiguousFile'],
+  // pax headers
+  ['g', 'GlobalExtendedHeader'],
+  ['x', 'ExtendedHeader'],
+  // vendor-specific stuff
+  // skip
+  ['A', 'SolarisACL'],
+  // like 5, but with data, which should be skipped
+  ['D', 'GNUDumpDir'],
+  // metadata only, skip
+  ['I', 'Inode'],
+  // data = link path of next file
+  ['K', 'NextFileHasLongLinkpath'],
+  // data = path of next file
+  ['L', 'NextFileHasLongPath'],
+  // skip
+  ['M', 'ContinuationFile'],
+  // like L
+  ['N', 'OldGnuLongPath'],
+  // skip
+  ['S', 'SparseFile'],
+  // skip
+  ['V', 'TapeVolumeHeader'],
+  // like x
+  ['X', 'OldExtendedHeader']
+])
+
+// map the other direction
+exports.code = new Map(Array.from(exports.name).map(kv => [kv[1], kv[0]]))
diff --git a/node_modules/pacote/node_modules/tar/lib/unpack.js b/node_modules/pacote/node_modules/tar/lib/unpack.js
new file mode 100644
index 000000000..fc765096e
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/unpack.js
@@ -0,0 +1,621 @@
+'use strict'
+
+const assert = require('assert')
+const EE = require('events').EventEmitter
+const Parser = require('./parse.js')
+const fs = require('fs')
+const fsm = require('fs-minipass')
+const path = require('path')
+const mkdir = require('./mkdir.js')
+const mkdirSync = mkdir.sync
+const wc = require('./winchars.js')
+
+const ONENTRY = Symbol('onEntry')
+const CHECKFS = Symbol('checkFs')
+const ISREUSABLE = Symbol('isReusable')
+const MAKEFS = Symbol('makeFs')
+const FILE = Symbol('file')
+const DIRECTORY = Symbol('directory')
+const LINK = Symbol('link')
+const SYMLINK = Symbol('symlink')
+const HARDLINK = Symbol('hardlink')
+const UNSUPPORTED = Symbol('unsupported')
+const UNKNOWN = Symbol('unknown')
+const CHECKPATH = Symbol('checkPath')
+const MKDIR = Symbol('mkdir')
+const ONERROR = Symbol('onError')
+const PENDING = Symbol('pending')
+const PEND = Symbol('pend')
+const UNPEND = Symbol('unpend')
+const ENDED = Symbol('ended')
+const MAYBECLOSE = Symbol('maybeClose')
+const SKIP = Symbol('skip')
+const DOCHOWN = Symbol('doChown')
+const UID = Symbol('uid')
+const GID = Symbol('gid')
+const crypto = require('crypto')
+
+// Unlinks on Windows are not atomic.
+//
+// This means that if you have a file entry, followed by another
+// file entry with an identical name, and you cannot re-use the file
+// (because it's a hardlink, or because unlink:true is set, or it's
+// Windows, which does not have useful nlink values), then the unlink
+// will be committed to the disk AFTER the new file has been written
+// over the old one, deleting the new file.
+//
+// To work around this, on Windows systems, we rename the file and then
+// delete the renamed file.  It's a sloppy kludge, but frankly, I do not
+// know of a better way to do this, given windows' non-atomic unlink
+// semantics.
+//
+// See: https://github.com/npm/node-tar/issues/183
+/* istanbul ignore next */
+const unlinkFile = (path, cb) => {
+  if (process.platform !== 'win32')
+    return fs.unlink(path, cb)
+
+  const name = path + '.DELETE.' + crypto.randomBytes(16).toString('hex')
+  fs.rename(path, name, er => {
+    if (er)
+      return cb(er)
+    fs.unlink(name, cb)
+  })
+}
+
+/* istanbul ignore next */
+const unlinkFileSync = path => {
+  if (process.platform !== 'win32')
+    return fs.unlinkSync(path)
+
+  const name = path + '.DELETE.' + crypto.randomBytes(16).toString('hex')
+  fs.renameSync(path, name)
+  fs.unlinkSync(name)
+}
+
+// this.gid, entry.gid, this.processUid
+const uint32 = (a, b, c) =>
+  a === a >>> 0 ? a
+  : b === b >>> 0 ? b
+  : c
+
+class Unpack extends Parser {
+  constructor (opt) {
+    if (!opt)
+      opt = {}
+
+    opt.ondone = _ => {
+      this[ENDED] = true
+      this[MAYBECLOSE]()
+    }
+
+    super(opt)
+
+    this.transform = typeof opt.transform === 'function' ? opt.transform : null
+
+    this.writable = true
+    this.readable = false
+
+    this[PENDING] = 0
+    this[ENDED] = false
+
+    this.dirCache = opt.dirCache || new Map()
+
+    if (typeof opt.uid === 'number' || typeof opt.gid === 'number') {
+      // need both or neither
+      if (typeof opt.uid !== 'number' || typeof opt.gid !== 'number')
+        throw new TypeError('cannot set owner without number uid and gid')
+      if (opt.preserveOwner)
+        throw new TypeError(
+          'cannot preserve owner in archive and also set owner explicitly')
+      this.uid = opt.uid
+      this.gid = opt.gid
+      this.setOwner = true
+    } else {
+      this.uid = null
+      this.gid = null
+      this.setOwner = false
+    }
+
+    // default true for root
+    if (opt.preserveOwner === undefined && typeof opt.uid !== 'number')
+      this.preserveOwner = process.getuid && process.getuid() === 0
+    else
+      this.preserveOwner = !!opt.preserveOwner
+
+    this.processUid = (this.preserveOwner || this.setOwner) && process.getuid ?
+      process.getuid() : null
+    this.processGid = (this.preserveOwner || this.setOwner) && process.getgid ?
+      process.getgid() : null
+
+    // mostly just for testing, but useful in some cases.
+    // Forcibly trigger a chown on every entry, no matter what
+    this.forceChown = opt.forceChown === true
+
+    // turn ><?| in filenames into 0xf000-higher encoded forms
+    this.win32 = !!opt.win32 || process.platform === 'win32'
+
+    // do not unpack over files that are newer than what's in the archive
+    this.newer = !!opt.newer
+
+    // do not unpack over ANY files
+    this.keep = !!opt.keep
+
+    // do not set mtime/atime of extracted entries
+    this.noMtime = !!opt.noMtime
+
+    // allow .., absolute path entries, and unpacking through symlinks
+    // without this, warn and skip .., relativize absolutes, and error
+    // on symlinks in extraction path
+    this.preservePaths = !!opt.preservePaths
+
+    // unlink files and links before writing. This breaks existing hard
+    // links, and removes symlink directories rather than erroring
+    this.unlink = !!opt.unlink
+
+    this.cwd = path.resolve(opt.cwd || process.cwd())
+    this.strip = +opt.strip || 0
+    this.processUmask = process.umask()
+    this.umask = typeof opt.umask === 'number' ? opt.umask : this.processUmask
+    // default mode for dirs created as parents
+    this.dmode = opt.dmode || (0o0777 & (~this.umask))
+    this.fmode = opt.fmode || (0o0666 & (~this.umask))
+    this.on('entry', entry => this[ONENTRY](entry))
+  }
+
+  [MAYBECLOSE] () {
+    if (this[ENDED] && this[PENDING] === 0) {
+      this.emit('prefinish')
+      this.emit('finish')
+      this.emit('end')
+      this.emit('close')
+    }
+  }
+
+  [CHECKPATH] (entry) {
+    if (this.strip) {
+      const parts = entry.path.split(/\/|\\/)
+      if (parts.length < this.strip)
+        return false
+      entry.path = parts.slice(this.strip).join('/')
+
+      if (entry.type === 'Link') {
+        const linkparts = entry.linkpath.split(/\/|\\/)
+        if (linkparts.length >= this.strip)
+          entry.linkpath = linkparts.slice(this.strip).join('/')
+      }
+    }
+
+    if (!this.preservePaths) {
+      const p = entry.path
+      if (p.match(/(^|\/|\\)\.\.(\\|\/|$)/)) {
+        this.warn('path contains \'..\'', p)
+        return false
+      }
+
+      // absolutes on posix are also absolutes on win32
+      // so we only need to test this one to get both
+      if (path.win32.isAbsolute(p)) {
+        const parsed = path.win32.parse(p)
+        this.warn('stripping ' + parsed.root + ' from absolute path', p)
+        entry.path = p.substr(parsed.root.length)
+      }
+    }
+
+    // only encode : chars that aren't drive letter indicators
+    if (this.win32) {
+      const parsed = path.win32.parse(entry.path)
+      entry.path = parsed.root === '' ? wc.encode(entry.path)
+        : parsed.root + wc.encode(entry.path.substr(parsed.root.length))
+    }
+
+    if (path.isAbsolute(entry.path))
+      entry.absolute = entry.path
+    else
+      entry.absolute = path.resolve(this.cwd, entry.path)
+
+    return true
+  }
+
+  [ONENTRY] (entry) {
+    if (!this[CHECKPATH](entry))
+      return entry.resume()
+
+    assert.equal(typeof entry.absolute, 'string')
+
+    switch (entry.type) {
+      case 'Directory':
+      case 'GNUDumpDir':
+        if (entry.mode)
+          entry.mode = entry.mode | 0o700
+
+      case 'File':
+      case 'OldFile':
+      case 'ContiguousFile':
+      case 'Link':
+      case 'SymbolicLink':
+        return this[CHECKFS](entry)
+
+      case 'CharacterDevice':
+      case 'BlockDevice':
+      case 'FIFO':
+        return this[UNSUPPORTED](entry)
+    }
+  }
+
+  [ONERROR] (er, entry) {
+    // Cwd has to exist, or else nothing works. That's serious.
+    // Other errors are warnings, which raise the error in strict
+    // mode, but otherwise continue on.
+    if (er.name === 'CwdError')
+      this.emit('error', er)
+    else {
+      this.warn(er.message, er)
+      this[UNPEND]()
+      entry.resume()
+    }
+  }
+
+  [MKDIR] (dir, mode, cb) {
+    mkdir(dir, {
+      uid: this.uid,
+      gid: this.gid,
+      processUid: this.processUid,
+      processGid: this.processGid,
+      umask: this.processUmask,
+      preserve: this.preservePaths,
+      unlink: this.unlink,
+      cache: this.dirCache,
+      cwd: this.cwd,
+      mode: mode
+    }, cb)
+  }
+
+  [DOCHOWN] (entry) {
+    // in preserve owner mode, chown if the entry doesn't match process
+    // in set owner mode, chown if setting doesn't match process
+    return this.forceChown ||
+      this.preserveOwner &&
+      ( typeof entry.uid === 'number' && entry.uid !== this.processUid ||
+        typeof entry.gid === 'number' && entry.gid !== this.processGid )
+      ||
+      ( typeof this.uid === 'number' && this.uid !== this.processUid ||
+        typeof this.gid === 'number' && this.gid !== this.processGid )
+  }
+
+  [UID] (entry) {
+    return uint32(this.uid, entry.uid, this.processUid)
+  }
+
+  [GID] (entry) {
+    return uint32(this.gid, entry.gid, this.processGid)
+  }
+
+  [FILE] (entry) {
+    const mode = entry.mode & 0o7777 || this.fmode
+    const stream = new fsm.WriteStream(entry.absolute, {
+      mode: mode,
+      autoClose: false
+    })
+    stream.on('error', er => this[ONERROR](er, entry))
+
+    let actions = 1
+    const done = er => {
+      if (er)
+        return this[ONERROR](er, entry)
+
+      if (--actions === 0)
+        fs.close(stream.fd, _ => this[UNPEND]())
+    }
+
+    stream.on('finish', _ => {
+      // if futimes fails, try utimes
+      // if utimes fails, fail with the original error
+      // same for fchown/chown
+      const abs = entry.absolute
+      const fd = stream.fd
+
+      if (entry.mtime && !this.noMtime) {
+        actions++
+        const atime = entry.atime || new Date()
+        const mtime = entry.mtime
+        fs.futimes(fd, atime, mtime, er =>
+          er ? fs.utimes(abs, atime, mtime, er2 => done(er2 && er))
+          : done())
+      }
+
+      if (this[DOCHOWN](entry)) {
+        actions++
+        const uid = this[UID](entry)
+        const gid = this[GID](entry)
+        fs.fchown(fd, uid, gid, er =>
+          er ? fs.chown(abs, uid, gid, er2 => done(er2 && er))
+          : done())
+      }
+
+      done()
+    })
+
+    const tx = this.transform ? this.transform(entry) || entry : entry
+    if (tx !== entry) {
+      tx.on('error', er => this[ONERROR](er, entry))
+      entry.pipe(tx)
+    }
+    tx.pipe(stream)
+  }
+
+  [DIRECTORY] (entry) {
+    const mode = entry.mode & 0o7777 || this.dmode
+    this[MKDIR](entry.absolute, mode, er => {
+      if (er)
+        return this[ONERROR](er, entry)
+
+      let actions = 1
+      const done = _ => {
+        if (--actions === 0) {
+          this[UNPEND]()
+          entry.resume()
+        }
+      }
+
+      if (entry.mtime && !this.noMtime) {
+        actions++
+        fs.utimes(entry.absolute, entry.atime || new Date(), entry.mtime, done)
+      }
+
+      if (this[DOCHOWN](entry)) {
+        actions++
+        fs.chown(entry.absolute, this[UID](entry), this[GID](entry), done)
+      }
+
+      done()
+    })
+  }
+
+  [UNSUPPORTED] (entry) {
+    this.warn('unsupported entry type: ' + entry.type, entry)
+    entry.resume()
+  }
+
+  [SYMLINK] (entry) {
+    this[LINK](entry, entry.linkpath, 'symlink')
+  }
+
+  [HARDLINK] (entry) {
+    this[LINK](entry, path.resolve(this.cwd, entry.linkpath), 'link')
+  }
+
+  [PEND] () {
+    this[PENDING]++
+  }
+
+  [UNPEND] () {
+    this[PENDING]--
+    this[MAYBECLOSE]()
+  }
+
+  [SKIP] (entry) {
+    this[UNPEND]()
+    entry.resume()
+  }
+
+  // Check if we can reuse an existing filesystem entry safely and
+  // overwrite it, rather than unlinking and recreating
+  // Windows doesn't report a useful nlink, so we just never reuse entries
+  [ISREUSABLE] (entry, st) {
+    return entry.type === 'File' &&
+      !this.unlink &&
+      st.isFile() &&
+      st.nlink <= 1 &&
+      process.platform !== 'win32'
+  }
+
+  // check if a thing is there, and if so, try to clobber it
+  [CHECKFS] (entry) {
+    this[PEND]()
+    this[MKDIR](path.dirname(entry.absolute), this.dmode, er => {
+      if (er)
+        return this[ONERROR](er, entry)
+      fs.lstat(entry.absolute, (er, st) => {
+        if (st && (this.keep || this.newer && st.mtime > entry.mtime))
+          this[SKIP](entry)
+        else if (er || this[ISREUSABLE](entry, st))
+          this[MAKEFS](null, entry)
+        else if (st.isDirectory()) {
+          if (entry.type === 'Directory') {
+            if (!entry.mode || (st.mode & 0o7777) === entry.mode)
+              this[MAKEFS](null, entry)
+            else
+              fs.chmod(entry.absolute, entry.mode, er => this[MAKEFS](er, entry))
+          } else
+            fs.rmdir(entry.absolute, er => this[MAKEFS](er, entry))
+        } else
+          unlinkFile(entry.absolute, er => this[MAKEFS](er, entry))
+      })
+    })
+  }
+
+  [MAKEFS] (er, entry) {
+    if (er)
+      return this[ONERROR](er, entry)
+
+    switch (entry.type) {
+      case 'File':
+      case 'OldFile':
+      case 'ContiguousFile':
+        return this[FILE](entry)
+
+      case 'Link':
+        return this[HARDLINK](entry)
+
+      case 'SymbolicLink':
+        return this[SYMLINK](entry)
+
+      case 'Directory':
+      case 'GNUDumpDir':
+        return this[DIRECTORY](entry)
+    }
+  }
+
+  [LINK] (entry, linkpath, link) {
+    // XXX: get the type ('file' or 'dir') for windows
+    fs[link](linkpath, entry.absolute, er => {
+      if (er)
+        return this[ONERROR](er, entry)
+      this[UNPEND]()
+      entry.resume()
+    })
+  }
+}
+
+class UnpackSync extends Unpack {
+  constructor (opt) {
+    super(opt)
+  }
+
+  [CHECKFS] (entry) {
+    const er = this[MKDIR](path.dirname(entry.absolute), this.dmode)
+    if (er)
+      return this[ONERROR](er, entry)
+    try {
+      const st = fs.lstatSync(entry.absolute)
+      if (this.keep || this.newer && st.mtime > entry.mtime)
+        return this[SKIP](entry)
+      else if (this[ISREUSABLE](entry, st))
+        return this[MAKEFS](null, entry)
+      else {
+        try {
+          if (st.isDirectory()) {
+            if (entry.type === 'Directory') {
+              if (entry.mode && (st.mode & 0o7777) !== entry.mode)
+                fs.chmodSync(entry.absolute, entry.mode)
+            } else
+              fs.rmdirSync(entry.absolute)
+          } else
+            unlinkFileSync(entry.absolute)
+          return this[MAKEFS](null, entry)
+        } catch (er) {
+          return this[ONERROR](er, entry)
+        }
+      }
+    } catch (er) {
+      return this[MAKEFS](null, entry)
+    }
+  }
+
+  [FILE] (entry) {
+    const mode = entry.mode & 0o7777 || this.fmode
+
+    const oner = er => {
+      try { fs.closeSync(fd) } catch (_) {}
+      if (er)
+        this[ONERROR](er, entry)
+    }
+
+    let stream
+    let fd
+    try {
+      fd = fs.openSync(entry.absolute, 'w', mode)
+    } catch (er) {
+      return oner(er)
+    }
+    const tx = this.transform ? this.transform(entry) || entry : entry
+    if (tx !== entry) {
+      tx.on('error', er => this[ONERROR](er, entry))
+      entry.pipe(tx)
+    }
+
+    tx.on('data', chunk => {
+      try {
+        fs.writeSync(fd, chunk, 0, chunk.length)
+      } catch (er) {
+        oner(er)
+      }
+    })
+
+    tx.on('end', _ => {
+      let er = null
+      // try both, falling futimes back to utimes
+      // if either fails, handle the first error
+      if (entry.mtime && !this.noMtime) {
+        const atime = entry.atime || new Date()
+        const mtime = entry.mtime
+        try {
+          fs.futimesSync(fd, atime, mtime)
+        } catch (futimeser) {
+          try {
+            fs.utimesSync(entry.absolute, atime, mtime)
+          } catch (utimeser) {
+            er = futimeser
+          }
+        }
+      }
+
+      if (this[DOCHOWN](entry)) {
+        const uid = this[UID](entry)
+        const gid = this[GID](entry)
+
+        try {
+          fs.fchownSync(fd, uid, gid)
+        } catch (fchowner) {
+          try {
+            fs.chownSync(entry.absolute, uid, gid)
+          } catch (chowner) {
+            er = er || fchowner
+          }
+        }
+      }
+
+      oner(er)
+    })
+  }
+
+  [DIRECTORY] (entry) {
+    const mode = entry.mode & 0o7777 || this.dmode
+    const er = this[MKDIR](entry.absolute, mode)
+    if (er)
+      return this[ONERROR](er, entry)
+    if (entry.mtime && !this.noMtime) {
+      try {
+        fs.utimesSync(entry.absolute, entry.atime || new Date(), entry.mtime)
+      } catch (er) {}
+    }
+    if (this[DOCHOWN](entry)) {
+      try {
+        fs.chownSync(entry.absolute, this[UID](entry), this[GID](entry))
+      } catch (er) {}
+    }
+    entry.resume()
+  }
+
+  [MKDIR] (dir, mode) {
+    try {
+      return mkdir.sync(dir, {
+        uid: this.uid,
+        gid: this.gid,
+        processUid: this.processUid,
+        processGid: this.processGid,
+        umask: this.processUmask,
+        preserve: this.preservePaths,
+        unlink: this.unlink,
+        cache: this.dirCache,
+        cwd: this.cwd,
+        mode: mode
+      })
+    } catch (er) {
+      return er
+    }
+  }
+
+  [LINK] (entry, linkpath, link) {
+    try {
+      fs[link + 'Sync'](linkpath, entry.absolute)
+      entry.resume()
+    } catch (er) {
+      return this[ONERROR](er, entry)
+    }
+  }
+}
+
+Unpack.Sync = UnpackSync
+module.exports = Unpack
diff --git a/node_modules/pacote/node_modules/tar/lib/update.js b/node_modules/pacote/node_modules/tar/lib/update.js
new file mode 100644
index 000000000..16c3e93ed
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/update.js
@@ -0,0 +1,36 @@
+'use strict'
+
+// tar -u
+
+const hlo = require('./high-level-opt.js')
+const r = require('./replace.js')
+// just call tar.r with the filter and mtimeCache
+
+const u = module.exports = (opt_, files, cb) => {
+  const opt = hlo(opt_)
+
+  if (!opt.file)
+    throw new TypeError('file is required')
+
+  if (opt.gzip)
+    throw new TypeError('cannot append to compressed archives')
+
+  if (!files || !Array.isArray(files) || !files.length)
+    throw new TypeError('no files or directories specified')
+
+  files = Array.from(files)
+
+  mtimeFilter(opt)
+  return r(opt, files, cb)
+}
+
+const mtimeFilter = opt => {
+  const filter = opt.filter
+
+  if (!opt.mtimeCache)
+    opt.mtimeCache = new Map()
+
+  opt.filter = filter ? (path, stat) =>
+    filter(path, stat) && !(opt.mtimeCache.get(path) > stat.mtime)
+    : (path, stat) => !(opt.mtimeCache.get(path) > stat.mtime)
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/warn-mixin.js b/node_modules/pacote/node_modules/tar/lib/warn-mixin.js
new file mode 100644
index 000000000..94a4b9b99
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/warn-mixin.js
@@ -0,0 +1,14 @@
+'use strict'
+module.exports = Base => class extends Base {
+  warn (msg, data) {
+    if (!this.strict)
+      this.emit('warn', msg, data)
+    else if (data instanceof Error)
+      this.emit('error', data)
+    else {
+      const er = new Error(msg)
+      er.data = data
+      this.emit('error', er)
+    }
+  }
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/winchars.js b/node_modules/pacote/node_modules/tar/lib/winchars.js
new file mode 100644
index 000000000..cf6ea0606
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/winchars.js
@@ -0,0 +1,23 @@
+'use strict'
+
+// When writing files on Windows, translate the characters to their
+// 0xf000 higher-encoded versions.
+
+const raw = [
+  '|',
+  '<',
+  '>',
+  '?',
+  ':'
+]
+
+const win = raw.map(char =>
+  String.fromCharCode(0xf000 + char.charCodeAt(0)))
+
+const toWin = new Map(raw.map((char, i) => [char, win[i]]))
+const toRaw = new Map(win.map((char, i) => [char, raw[i]]))
+
+module.exports = {
+  encode: s => raw.reduce((s, c) => s.split(c).join(toWin.get(c)), s),
+  decode: s => win.reduce((s, c) => s.split(c).join(toRaw.get(c)), s)
+}
diff --git a/node_modules/pacote/node_modules/tar/lib/write-entry.js b/node_modules/pacote/node_modules/tar/lib/write-entry.js
new file mode 100644
index 000000000..0c019006f
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/lib/write-entry.js
@@ -0,0 +1,422 @@
+'use strict'
+const Buffer = require('./buffer.js')
+const MiniPass = require('minipass')
+const Pax = require('./pax.js')
+const Header = require('./header.js')
+const ReadEntry = require('./read-entry.js')
+const fs = require('fs')
+const path = require('path')
+
+const types = require('./types.js')
+const maxReadSize = 16 * 1024 * 1024
+const PROCESS = Symbol('process')
+const FILE = Symbol('file')
+const DIRECTORY = Symbol('directory')
+const SYMLINK = Symbol('symlink')
+const HARDLINK = Symbol('hardlink')
+const HEADER = Symbol('header')
+const READ = Symbol('read')
+const LSTAT = Symbol('lstat')
+const ONLSTAT = Symbol('onlstat')
+const ONREAD = Symbol('onread')
+const ONREADLINK = Symbol('onreadlink')
+const OPENFILE = Symbol('openfile')
+const ONOPENFILE = Symbol('onopenfile')
+const CLOSE = Symbol('close')
+const MODE = Symbol('mode')
+const warner = require('./warn-mixin.js')
+const winchars = require('./winchars.js')
+
+const modeFix = require('./mode-fix.js')
+
+const WriteEntry = warner(class WriteEntry extends MiniPass {
+  constructor (p, opt) {
+    opt = opt || {}
+    super(opt)
+    if (typeof p !== 'string')
+      throw new TypeError('path is required')
+    this.path = p
+    // suppress atime, ctime, uid, gid, uname, gname
+    this.portable = !!opt.portable
+    // until node has builtin pwnam functions, this'll have to do
+    this.myuid = process.getuid && process.getuid()
+    this.myuser = process.env.USER || ''
+    this.maxReadSize = opt.maxReadSize || maxReadSize
+    this.linkCache = opt.linkCache || new Map()
+    this.statCache = opt.statCache || new Map()
+    this.preservePaths = !!opt.preservePaths
+    this.cwd = opt.cwd || process.cwd()
+    this.strict = !!opt.strict
+    this.noPax = !!opt.noPax
+    this.noMtime = !!opt.noMtime
+    this.mtime = opt.mtime || null
+
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+
+    if (!this.preservePaths && path.win32.isAbsolute(p)) {
+      // absolutes on posix are also absolutes on win32
+      // so we only need to test this one to get both
+      const parsed = path.win32.parse(p)
+      this.warn('stripping ' + parsed.root + ' from absolute path', p)
+      this.path = p.substr(parsed.root.length)
+    }
+
+    this.win32 = !!opt.win32 || process.platform === 'win32'
+    if (this.win32) {
+      this.path = winchars.decode(this.path.replace(/\\/g, '/'))
+      p = p.replace(/\\/g, '/')
+    }
+
+    this.absolute = opt.absolute || path.resolve(this.cwd, p)
+
+    if (this.path === '')
+      this.path = './'
+
+    if (this.statCache.has(this.absolute))
+      this[ONLSTAT](this.statCache.get(this.absolute))
+    else
+      this[LSTAT]()
+  }
+
+  [LSTAT] () {
+    fs.lstat(this.absolute, (er, stat) => {
+      if (er)
+        return this.emit('error', er)
+      this[ONLSTAT](stat)
+    })
+  }
+
+  [ONLSTAT] (stat) {
+    this.statCache.set(this.absolute, stat)
+    this.stat = stat
+    if (!stat.isFile())
+      stat.size = 0
+    this.type = getType(stat)
+    this.emit('stat', stat)
+    this[PROCESS]()
+  }
+
+  [PROCESS] () {
+    switch (this.type) {
+      case 'File': return this[FILE]()
+      case 'Directory': return this[DIRECTORY]()
+      case 'SymbolicLink': return this[SYMLINK]()
+      // unsupported types are ignored.
+      default: return this.end()
+    }
+  }
+
+  [MODE] (mode) {
+    return modeFix(mode, this.type === 'Directory')
+  }
+
+  [HEADER] () {
+    if (this.type === 'Directory' && this.portable)
+      this.noMtime = true
+
+    this.header = new Header({
+      path: this.path,
+      linkpath: this.linkpath,
+      // only the permissions and setuid/setgid/sticky bitflags
+      // not the higher-order bits that specify file type
+      mode: this[MODE](this.stat.mode),
+      uid: this.portable ? null : this.stat.uid,
+      gid: this.portable ? null : this.stat.gid,
+      size: this.stat.size,
+      mtime: this.noMtime ? null : this.mtime || this.stat.mtime,
+      type: this.type,
+      uname: this.portable ? null :
+        this.stat.uid === this.myuid ? this.myuser : '',
+      atime: this.portable ? null : this.stat.atime,
+      ctime: this.portable ? null : this.stat.ctime
+    })
+
+    if (this.header.encode() && !this.noPax)
+      this.write(new Pax({
+        atime: this.portable ? null : this.header.atime,
+        ctime: this.portable ? null : this.header.ctime,
+        gid: this.portable ? null : this.header.gid,
+        mtime: this.noMtime ? null : this.mtime || this.header.mtime,
+        path: this.path,
+        linkpath: this.linkpath,
+        size: this.header.size,
+        uid: this.portable ? null : this.header.uid,
+        uname: this.portable ? null : this.header.uname,
+        dev: this.portable ? null : this.stat.dev,
+        ino: this.portable ? null : this.stat.ino,
+        nlink: this.portable ? null : this.stat.nlink
+      }).encode())
+    this.write(this.header.block)
+  }
+
+  [DIRECTORY] () {
+    if (this.path.substr(-1) !== '/')
+      this.path += '/'
+    this.stat.size = 0
+    this[HEADER]()
+    this.end()
+  }
+
+  [SYMLINK] () {
+    fs.readlink(this.absolute, (er, linkpath) => {
+      if (er)
+        return this.emit('error', er)
+      this[ONREADLINK](linkpath)
+    })
+  }
+
+  [ONREADLINK] (linkpath) {
+    this.linkpath = linkpath
+    this[HEADER]()
+    this.end()
+  }
+
+  [HARDLINK] (linkpath) {
+    this.type = 'Link'
+    this.linkpath = path.relative(this.cwd, linkpath)
+    this.stat.size = 0
+    this[HEADER]()
+    this.end()
+  }
+
+  [FILE] () {
+    if (this.stat.nlink > 1) {
+      const linkKey = this.stat.dev + ':' + this.stat.ino
+      if (this.linkCache.has(linkKey)) {
+        const linkpath = this.linkCache.get(linkKey)
+        if (linkpath.indexOf(this.cwd) === 0)
+          return this[HARDLINK](linkpath)
+      }
+      this.linkCache.set(linkKey, this.absolute)
+    }
+
+    this[HEADER]()
+    if (this.stat.size === 0)
+      return this.end()
+
+    this[OPENFILE]()
+  }
+
+  [OPENFILE] () {
+    fs.open(this.absolute, 'r', (er, fd) => {
+      if (er)
+        return this.emit('error', er)
+      this[ONOPENFILE](fd)
+    })
+  }
+
+  [ONOPENFILE] (fd) {
+    const blockLen = 512 * Math.ceil(this.stat.size / 512)
+    const bufLen = Math.min(blockLen, this.maxReadSize)
+    const buf = Buffer.allocUnsafe(bufLen)
+    this[READ](fd, buf, 0, buf.length, 0, this.stat.size, blockLen)
+  }
+
+  [READ] (fd, buf, offset, length, pos, remain, blockRemain) {
+    fs.read(fd, buf, offset, length, pos, (er, bytesRead) => {
+      if (er)
+        return this[CLOSE](fd, _ => this.emit('error', er))
+      this[ONREAD](fd, buf, offset, length, pos, remain, blockRemain, bytesRead)
+    })
+  }
+
+  [CLOSE] (fd, cb) {
+    fs.close(fd, cb)
+  }
+
+  [ONREAD] (fd, buf, offset, length, pos, remain, blockRemain, bytesRead) {
+    if (bytesRead <= 0 && remain > 0) {
+      const er = new Error('encountered unexpected EOF')
+      er.path = this.absolute
+      er.syscall = 'read'
+      er.code = 'EOF'
+      this[CLOSE](fd, _ => _)
+      return this.emit('error', er)
+    }
+
+    if (bytesRead > remain) {
+      const er = new Error('did not encounter expected EOF')
+      er.path = this.absolute
+      er.syscall = 'read'
+      er.code = 'EOF'
+      this[CLOSE](fd, _ => _)
+      return this.emit('error', er)
+    }
+
+    // null out the rest of the buffer, if we could fit the block padding
+    if (bytesRead === remain) {
+      for (let i = bytesRead; i < length && bytesRead < blockRemain; i++) {
+        buf[i + offset] = 0
+        bytesRead ++
+        remain ++
+      }
+    }
+
+    const writeBuf = offset === 0 && bytesRead === buf.length ?
+      buf : buf.slice(offset, offset + bytesRead)
+    remain -= bytesRead
+    blockRemain -= bytesRead
+    pos += bytesRead
+    offset += bytesRead
+
+    this.write(writeBuf)
+
+    if (!remain) {
+      if (blockRemain)
+        this.write(Buffer.alloc(blockRemain))
+      this.end()
+      this[CLOSE](fd, _ => _)
+      return
+    }
+
+    if (offset >= length) {
+      buf = Buffer.allocUnsafe(length)
+      offset = 0
+    }
+    length = buf.length - offset
+    this[READ](fd, buf, offset, length, pos, remain, blockRemain)
+  }
+})
+
+class WriteEntrySync extends WriteEntry {
+  constructor (path, opt) {
+    super(path, opt)
+  }
+
+  [LSTAT] () {
+    this[ONLSTAT](fs.lstatSync(this.absolute))
+  }
+
+  [SYMLINK] () {
+    this[ONREADLINK](fs.readlinkSync(this.absolute))
+  }
+
+  [OPENFILE] () {
+    this[ONOPENFILE](fs.openSync(this.absolute, 'r'))
+  }
+
+  [READ] (fd, buf, offset, length, pos, remain, blockRemain) {
+    let threw = true
+    try {
+      const bytesRead = fs.readSync(fd, buf, offset, length, pos)
+      this[ONREAD](fd, buf, offset, length, pos, remain, blockRemain, bytesRead)
+      threw = false
+    } finally {
+      if (threw)
+        try { this[CLOSE](fd) } catch (er) {}
+    }
+  }
+
+  [CLOSE] (fd) {
+    fs.closeSync(fd)
+  }
+}
+
+const WriteEntryTar = warner(class WriteEntryTar extends MiniPass {
+  constructor (readEntry, opt) {
+    opt = opt || {}
+    super(opt)
+    this.preservePaths = !!opt.preservePaths
+    this.portable = !!opt.portable
+    this.strict = !!opt.strict
+    this.noPax = !!opt.noPax
+    this.noMtime = !!opt.noMtime
+
+    this.readEntry = readEntry
+    this.type = readEntry.type
+    if (this.type === 'Directory' && this.portable)
+      this.noMtime = true
+
+    this.path = readEntry.path
+    this.mode = this[MODE](readEntry.mode)
+    this.uid = this.portable ? null : readEntry.uid
+    this.gid = this.portable ? null : readEntry.gid
+    this.uname = this.portable ? null : readEntry.uname
+    this.gname = this.portable ? null : readEntry.gname
+    this.size = readEntry.size
+    this.mtime = this.noMtime ? null : opt.mtime || readEntry.mtime
+    this.atime = this.portable ? null : readEntry.atime
+    this.ctime = this.portable ? null : readEntry.ctime
+    this.linkpath = readEntry.linkpath
+
+    if (typeof opt.onwarn === 'function')
+      this.on('warn', opt.onwarn)
+
+    if (path.isAbsolute(this.path) && !this.preservePaths) {
+      const parsed = path.parse(this.path)
+      this.warn(
+        'stripping ' + parsed.root + ' from absolute path',
+        this.path
+      )
+      this.path = this.path.substr(parsed.root.length)
+    }
+
+    this.remain = readEntry.size
+    this.blockRemain = readEntry.startBlockSize
+
+    this.header = new Header({
+      path: this.path,
+      linkpath: this.linkpath,
+      // only the permissions and setuid/setgid/sticky bitflags
+      // not the higher-order bits that specify file type
+      mode: this.mode,
+      uid: this.portable ? null : this.uid,
+      gid: this.portable ? null : this.gid,
+      size: this.size,
+      mtime: this.noMtime ? null : this.mtime,
+      type: this.type,
+      uname: this.portable ? null : this.uname,
+      atime: this.portable ? null : this.atime,
+      ctime: this.portable ? null : this.ctime
+    })
+
+    if (this.header.encode() && !this.noPax)
+      super.write(new Pax({
+        atime: this.portable ? null : this.atime,
+        ctime: this.portable ? null : this.ctime,
+        gid: this.portable ? null : this.gid,
+        mtime: this.noMtime ? null : this.mtime,
+        path: this.path,
+        linkpath: this.linkpath,
+        size: this.size,
+        uid: this.portable ? null : this.uid,
+        uname: this.portable ? null : this.uname,
+        dev: this.portable ? null : this.readEntry.dev,
+        ino: this.portable ? null : this.readEntry.ino,
+        nlink: this.portable ? null : this.readEntry.nlink
+      }).encode())
+
+    super.write(this.header.block)
+    readEntry.pipe(this)
+  }
+
+  [MODE] (mode) {
+    return modeFix(mode, this.type === 'Directory')
+  }
+
+  write (data) {
+    const writeLen = data.length
+    if (writeLen > this.blockRemain)
+      throw new Error('writing more to entry than is appropriate')
+    this.blockRemain -= writeLen
+    return super.write(data)
+  }
+
+  end () {
+    if (this.blockRemain)
+      this.write(Buffer.alloc(this.blockRemain))
+    return super.end()
+  }
+})
+
+WriteEntry.Sync = WriteEntrySync
+WriteEntry.Tar = WriteEntryTar
+
+const getType = stat =>
+  stat.isFile() ? 'File'
+  : stat.isDirectory() ? 'Directory'
+  : stat.isSymbolicLink() ? 'SymbolicLink'
+  : 'Unsupported'
+
+module.exports = WriteEntry
diff --git a/node_modules/pacote/node_modules/tar/package.json b/node_modules/pacote/node_modules/tar/package.json
new file mode 100644
index 000000000..a06234e72
--- /dev/null
+++ b/node_modules/pacote/node_modules/tar/package.json
@@ -0,0 +1,82 @@
+{
+  "_from": "tar@^4.4.10",
+  "_id": "tar@4.4.13",
+  "_inBundle": false,
+  "_integrity": "sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==",
+  "_location": "/pacote/tar",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "tar@^4.4.10",
+    "name": "tar",
+    "escapedName": "tar",
+    "rawSpec": "^4.4.10",
+    "saveSpec": null,
+    "fetchSpec": "^4.4.10"
+  },
+  "_requiredBy": [
+    "/pacote"
+  ],
+  "_resolved": "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
+  "_shasum": "43b364bc52888d555298637b10d60790254ab525",
+  "_spec": "tar@^4.4.10",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/pacote",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/npm/node-tar/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "chownr": "^1.1.1",
+    "fs-minipass": "^1.2.5",
+    "minipass": "^2.8.6",
+    "minizlib": "^1.2.1",
+    "mkdirp": "^0.5.0",
+    "safe-buffer": "^5.1.2",
+    "yallist": "^3.0.3"
+  },
+  "deprecated": false,
+  "description": "tar for node",
+  "devDependencies": {
+    "chmodr": "^1.2.0",
+    "end-of-stream": "^1.4.1",
+    "events-to-array": "^1.1.2",
+    "mutate-fs": "^2.1.1",
+    "rimraf": "^2.6.3",
+    "tap": "^14.6.5",
+    "tar-fs": "^1.16.3",
+    "tar-stream": "^1.6.2"
+  },
+  "engines": {
+    "node": ">=4.5"
+  },
+  "files": [
+    "index.js",
+    "lib/"
+  ],
+  "homepage": "https://github.com/npm/node-tar#readme",
+  "license": "ISC",
+  "name": "tar",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/npm/node-tar.git"
+  },
+  "scripts": {
+    "bench": "for i in benchmarks/*/*.js; do echo $i; for j in {1..5}; do node $i || break; done; done",
+    "genparse": "node scripts/generate-parse-fixtures.js",
+    "postpublish": "git push origin --follow-tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap"
+  },
+  "tap": {
+    "coverage-map": "map.js",
+    "check-coverage": true
+  },
+  "version": "4.4.13"
+}
diff --git a/node_modules/tar/CHANGELOG.md b/node_modules/tar/CHANGELOG.md
new file mode 100644
index 000000000..14b5c4ee8
--- /dev/null
+++ b/node_modules/tar/CHANGELOG.md
@@ -0,0 +1,66 @@
+# Charge Long
+
+## 6.0
+
+- Drop support for node 6 and 8
+- fix symlinks and hardlinks on windows being packed with `\`-style path
+  targets
+
+## 5.0
+
+- Address unpack race conditions using path reservations
+- Change large-numbers errors from TypeError to Error
+- Add `TAR_*` error codes
+- do not treat ignored entries as an invalid archive
+- drop support for node v4
+- unpack: conditionally use a file mapping to write files on Windows
+- Set more portable 'mode' value in portable mode
+- Set `portable` gzip option in portable mode
+
+## 4.4
+
+- Add 'mtime' option to tar creation to force mtime
+- unpack: only reuse file fs entries if nlink = 1
+- unpack: rename before unlinking files on Windows
+- Fix encoding/decoding of base-256 numbers
+- Use `stat` instead of `lstat` when checking CWD
+- Always provide a callback to fs.close()
+
+## 4.3
+
+- Add 'transform' unpack option
+
+## 4.2
+
+- Fail when zlib fails
+
+## 4.1
+
+- Add noMtime flag for tar creation
+
+## 4.0
+
+- unpack: raise error if cwd is missing or not a dir
+- pack: don't drop dots from dotfiles when prefixing
+
+## 3.1
+
+- Support `@file.tar` as an entry argument to copy entries from one tar
+  file to another.
+- Add `noPax` option
+- `noResume` option for tar.t
+- win32: convert `>|<?:` chars to windows-friendly form
+- Exclude mtime for dirs in portable mode
+
+## 3.0
+
+- Minipass-based implementation
+- Entirely new API surface, `tar.c()`, `tar.x()` etc., much closer to
+  system tar semantics
+- Massive performance improvement
+- Require node 4.x and higher
+
+## 0.x, 1.x, 2.x - 2011-2014
+
+- fstream-based implementation
+- slow and kinda bad, but better than npm shelling out to the system `tar`
diff --git a/node_modules/tar/README.md b/node_modules/tar/README.md
index 034e4865c..5e635e622 100644
--- a/node_modules/tar/README.md
+++ b/node_modules/tar/README.md
@@ -63,23 +63,93 @@ that all of the data is immediately available by calling
 `stream.read()`.  For writable streams, it will be acted upon as soon
 as it is provided, but this can be at any time.
 
-### Warnings
-
-Some things cause tar to emit a warning, but should usually not cause
-the entire operation to fail.  There are three ways to handle
-warnings:
-
-1. **Ignore them** (default) Invalid entries won't be put in the
-   archive, and invalid entries won't be unpacked.  This is usually
-   fine, but can hide failures that you might care about.
-2. **Notice them**  Add an `onwarn` function to the options, or listen
-   to the `'warn'` event on any tar stream.  The function will get
-   called as `onwarn(message, data)`.  Handle as appropriate.
-3. **Explode them.**  Set `strict: true` in the options object, and
-   `warn` messages will be emitted as `'error'` events instead.  If
-   there's no `error` handler, this causes the program to crash.  If
-   used with a promise-returning/callback-taking method, then it'll
-   send the error to the promise/callback.
+### Warnings and Errors
+
+Tar emits warnings and errors for recoverable and unrecoverable situations,
+respectively.  In many cases, a warning only affects a single entry in an
+archive, or is simply informing you that it's modifying an entry to comply
+with the settings provided.
+
+Unrecoverable warnings will always raise an error (ie, emit `'error'` on
+streaming actions, throw for non-streaming sync actions, reject the
+returned Promise for non-streaming async operations, or call a provided
+callback with an `Error` as the first argument).  Recoverable errors will
+raise an error only if `strict: true` is set in the options.
+
+Respond to (recoverable) warnings by listening to the `warn` event.
+Handlers receive 3 arguments:
+
+- `code` String.  One of the error codes below.  This may not match
+  `data.code`, which preserves the original error code from fs and zlib.
+- `message` String.  More details about the error.
+- `data` Metadata about the error.  An `Error` object for errors raised by
+  fs and zlib.  All fields are attached to errors raisd by tar.  Typically
+  contains the following fields, as relevant:
+  - `tarCode` The tar error code.
+  - `code` Either the tar error code, or the error code set by the
+    underlying system.
+  - `file` The archive file being read or written.
+  - `cwd` Working directory for creation and extraction operations.
+  - `entry` The entry object (if it could be created) for `TAR_ENTRY_INFO`,
+    `TAR_ENTRY_INVALID`, and `TAR_ENTRY_ERROR` warnings.
+  - `header` The header object (if it could be created, and the entry could
+    not be created) for `TAR_ENTRY_INFO` and `TAR_ENTRY_INVALID` warnings.
+  - `recoverable` Boolean.  If `false`, then the warning will emit an
+    `error`, even in non-strict mode.
+
+#### Error Codes
+
+* `TAR_ENTRY_INFO`  An informative error indicating that an entry is being
+  modified, but otherwise processed normally.  For example, removing `/` or
+  `C:\` from absolute paths if `preservePaths` is not set.
+
+* `TAR_ENTRY_INVALID` An indication that a given entry is not a valid tar
+  archive entry, and will be skipped.  This occurs when:
+  - a checksum fails,
+  - a `linkpath` is missing for a link type, or
+  - a `linkpath` is provided for a non-link type.
+
+  If every entry in a parsed archive raises an `TAR_ENTRY_INVALID` error,
+  then the archive is presumed to be unrecoverably broken, and
+  `TAR_BAD_ARCHIVE` will be raised.
+
+* `TAR_ENTRY_ERROR` The entry appears to be a valid tar archive entry, but
+  encountered an error which prevented it from being unpacked.  This occurs
+  when:
+  - an unrecoverable fs error happens during unpacking,
+  - an entry has `..` in the path and `preservePaths` is not set, or
+  - an entry is extracting through a symbolic link, when `preservePaths` is
+    not set.
+
+* `TAR_ENTRY_UNSUPPORTED`  An indication that a given entry is
+  a valid archive entry, but of a type that is unsupported, and so will be
+  skipped in archive creation or extracting.
+
+* `TAR_ABORT`  When parsing gzipped-encoded archives, the parser will
+  abort the parse process raise a warning for any zlib errors encountered.
+  Aborts are considered unrecoverable for both parsing and unpacking.
+
+* `TAR_BAD_ARCHIVE`  The archive file is totally hosed.  This can happen for
+  a number of reasons, and always occurs at the end of a parse or extract:
+
+  - An entry body was truncated before seeing the full number of bytes.
+  - The archive contained only invalid entries, indicating that it is
+    likely not an archive, or at least, not an archive this library can
+    parse.
+
+  `TAR_BAD_ARCHIVE` is considered informative for parse operations, but
+  unrecoverable for extraction.  Note that, if encountered at the end of an
+  extraction, tar WILL still have extracted as much it could from the
+  archive, so there may be some garbage files to clean up.
+
+Errors that occur deeper in the system (ie, either the filesystem or zlib)
+will have their error codes left intact, and a `tarCode` matching one of
+the above will be added to the warning metadata or the raised error object.
+
+Errors generated by tar will have one of the above codes set as the
+`error.code` field as well, but since errors originating in zlib or fs will
+have their original codes, it's better to read `error.tarCode` if you wish
+to see how tar is handling the issue.
 
 ### Examples
 
@@ -201,8 +271,8 @@ The following options are supported:
   and a file is not provided, then the resulting stream will already
   have the data ready to `read` or `emit('data')` as soon as you
   request it.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `strict` Treat warnings as crash-worthy errors.  Default false.
 - `cwd` The current working directory for creating the archive.
   Defaults to `process.cwd()`.  [Alias: `C`]
@@ -214,8 +284,9 @@ The following options are supported:
   or `false` to omit it.
 - `portable` Omit metadata that is system-specific: `ctime`, `atime`,
   `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
-  that `mtime` is still included, because this is necessary other
-  time-based operations.
+  that `mtime` is still included, because this is necessary for other
+  time-based operations.  Additionally, `mode` is set to a "reasonable
+  default" for most unix systems, based on a `umask` value of `0o22`.
 - `preservePaths` Allow absolute paths.  By default, `/` is stripped
   from absolute paths. [Alias: `P`]
 - `mode` The mode to set on the created file archive
@@ -297,8 +368,8 @@ The following options are supported:
   Pathnames with fewer elements will be silently skipped.  Note that
   the pathname is edited after applying the filter, but before
   security checks. [Alias: `strip-components`, `stripComponents`]
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `preserveOwner` If true, tar will set the `uid` and `gid` of
   extracted entries to the `uid` and `gid` fields in the archive.
   This defaults to true when run as root, and false otherwise.  If
@@ -401,8 +472,8 @@ The following options are supported:
   filename. [Alias: `f`]
 - `sync` Act synchronously.  If this is set, then any provided file
   will be fully written after the call to `tar.c`.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `strict` Treat warnings as crash-worthy errors.  Default false.
 - `cwd` The current working directory for adding entries to the
   archive.  Defaults to `process.cwd()`.  [Alias: `C`]
@@ -414,8 +485,9 @@ The following options are supported:
   or `false` to omit it.
 - `portable` Omit metadata that is system-specific: `ctime`, `atime`,
   `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
-  that `mtime` is still included, because this is necessary other
-  time-based operations.
+  that `mtime` is still included, because this is necessary for other
+  time-based operations.  Additionally, `mode` is set to a "reasonable
+  default" for most unix systems, based on a `umask` value of `0o22`.
 - `preservePaths` Allow absolute paths.  By default, `/` is stripped
   from absolute paths. [Alias: `P`]
 - `maxReadSize` The maximum buffer size for `fs.read()` operations.
@@ -452,8 +524,8 @@ The following options are supported:
   filename. [Alias: `f`]
 - `sync` Act synchronously.  If this is set, then any provided file
   will be fully written after the call to `tar.c`.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `strict` Treat warnings as crash-worthy errors.  Default false.
 - `cwd` The current working directory for adding entries to the
   archive.  Defaults to `process.cwd()`.  [Alias: `C`]
@@ -465,8 +537,9 @@ The following options are supported:
   or `false` to omit it.
 - `portable` Omit metadata that is system-specific: `ctime`, `atime`,
   `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
-  that `mtime` is still included, because this is necessary other
-  time-based operations.
+  that `mtime` is still included, because this is necessary for other
+  time-based operations.  Additionally, `mode` is set to a "reasonable
+  default" for most unix systems, based on a `umask` value of `0o22`.
 - `preservePaths` Allow absolute paths.  By default, `/` is stripped
   from absolute paths. [Alias: `P`]
 - `maxReadSize` The maximum buffer size for `fs.read()` operations.
@@ -499,8 +572,8 @@ Has all the standard readable stream interface stuff.  `'data'` and
 
 The following options are supported:
 
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `strict` Treat warnings as crash-worthy errors.  Default false.
 - `cwd` The current working directory for creating the archive.
   Defaults to `process.cwd()`.
@@ -512,8 +585,9 @@ The following options are supported:
   or `false` to omit it.
 - `portable` Omit metadata that is system-specific: `ctime`, `atime`,
   `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
-  that `mtime` is still included, because this is necessary other
-  time-based operations.
+  that `mtime` is still included, because this is necessary for other
+  time-based operations.  Additionally, `mode` is set to a "reasonable
+  default" for most unix systems, based on a `umask` value of `0o22`.
 - `preservePaths` Allow absolute paths.  By default, `/` is stripped
   from absolute paths.
 - `linkCache` A Map object containing the device and inode value for
@@ -595,8 +669,8 @@ Most unpack errors will cause a `warn` event to be emitted.  If the
   Pathnames with fewer elements will be silently skipped.  Note that
   the pathname is edited after applying the filter, but before
   security checks.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `umask` Filter the modes of entries like `process.umask()`.
 - `dmode` Default mode for directories
 - `fmode` Default mode for files
@@ -634,8 +708,8 @@ Most unpack errors will cause a `warn` event to be emitted.  If the
 - `strict` Treat warnings as crash-worthy errors.  Default false.
 - `onentry` A function that gets called with `(entry)` for each entry
   that passes the filter.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 
 ### class tar.Unpack.Sync
 
@@ -674,13 +748,13 @@ The following options are supported:
   archive, or `false` to skip it.
 - `onentry` A function that gets called with `(entry)` for each entry
   that passes the filter.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 
-#### abort(message, error)
+#### abort(error)
 
 Stop all parsing activities.  This is called when there are zlib
-errors.  It also emits a warning with the message and error provided.
+errors.  It also emits an unrecoverable warning with the error provided.
 
 ### class tar.ReadEntry extends [MiniPass](http://npm.im/minipass)
 
@@ -725,8 +799,9 @@ It has the following fields:
   object.
 - `portable` Omit metadata that is system-specific: `ctime`, `atime`,
   `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
-  that `mtime` is still included, because this is necessary other
-  time-based operations.
+  that `mtime` is still included, because this is necessary for other
+  time-based operations.  Additionally, `mode` is set to a "reasonable
+  default" for most unix systems, based on a `umask` value of `0o22`.
 - `myuid` If supported, the uid of the user running the current
   process.
 - `myuser` The `env.USER` string if set, or `''`.  Set as the entry
@@ -764,8 +839,9 @@ The following options are supported:
 
 - `portable` Omit metadata that is system-specific: `ctime`, `atime`,
   `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
-  that `mtime` is still included, because this is necessary other
-  time-based operations.
+  that `mtime` is still included, because this is necessary for other
+  time-based operations.  Additionally, `mode` is set to a "reasonable
+  default" for most unix systems, based on a `umask` value of `0o22`.
 - `maxReadSize` The maximum buffer size for `fs.read()` operations.
   Defaults to 1 MB.
 - `linkCache` A Map object containing the device and inode value for
@@ -781,8 +857,8 @@ The following options are supported:
 - `strict` Treat warnings as crash-worthy errors.  Default false.
 - `win32` True if on a windows platform.  Causes behavior where paths
   replace `\` with `/`.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `noMtime` Set to true to omit writing `mtime` values for entries.
   Note that this prevents using other mtime-based features like
   `tar.update` or the `keepNewer` option with the resulting tar archive.
@@ -813,13 +889,14 @@ The following options are supported:
 
 - `portable` Omit metadata that is system-specific: `ctime`, `atime`,
   `uid`, `gid`, `uname`, `gname`, `dev`, `ino`, and `nlink`.  Note
-  that `mtime` is still included, because this is necessary other
-  time-based operations.
+  that `mtime` is still included, because this is necessary for other
+  time-based operations.  Additionally, `mode` is set to a "reasonable
+  default" for most unix systems, based on a `umask` value of `0o22`.
 - `preservePaths` Allow absolute paths.  By default, `/` is stripped
   from absolute paths.
 - `strict` Treat warnings as crash-worthy errors.  Default false.
-- `onwarn` A function that will get called with `(message, data)` for
-  any warnings encountered.
+- `onwarn` A function that will get called with `(code, message, data)` for
+  any warnings encountered.  (See "Warnings and Errors")
 - `noMtime` Set to true to omit writing `mtime` values for entries.
   Note that this prevents using other mtime-based features like
   `tar.update` or the `keepNewer` option with the resulting tar archive.
diff --git a/node_modules/tar/lib/get-write-flag.js b/node_modules/tar/lib/get-write-flag.js
new file mode 100644
index 000000000..e86959996
--- /dev/null
+++ b/node_modules/tar/lib/get-write-flag.js
@@ -0,0 +1,20 @@
+// Get the appropriate flag to use for creating files
+// We use fmap on Windows platforms for files less than
+// 512kb.  This is a fairly low limit, but avoids making
+// things slower in some cases.  Since most of what this
+// library is used for is extracting tarballs of many
+// relatively small files in npm packages and the like,
+// it can be a big boost on Windows platforms.
+// Only supported in Node v12.9.0 and above.
+const platform = process.env.__FAKE_PLATFORM__ || process.platform
+const isWindows = platform === 'win32'
+const fs = global.__FAKE_TESTING_FS__ || require('fs')
+
+/* istanbul ignore next */
+const { O_CREAT, O_TRUNC, O_WRONLY, UV_FS_O_FILEMAP = 0 } = fs.constants
+
+const fMapEnabled = isWindows && !!UV_FS_O_FILEMAP
+const fMapLimit = 512 * 1024
+const fMapFlag = UV_FS_O_FILEMAP | O_TRUNC | O_CREAT | O_WRONLY
+module.exports = !fMapEnabled ? () => 'w'
+  : size => size < fMapLimit ? fMapFlag : 'w'
diff --git a/node_modules/tar/lib/header.js b/node_modules/tar/lib/header.js
index d29c3b990..5d88f6cf8 100644
--- a/node_modules/tar/lib/header.js
+++ b/node_modules/tar/lib/header.js
@@ -4,7 +4,6 @@
 // the data could not be faithfully encoded in a simple header.
 // (Also, check header.needPax to see if it needs a pax header.)
 
-const Buffer = require('./buffer.js')
 const types = require('./types.js')
 const pathModule = require('path').posix
 const large = require('./large-numbers.js')
diff --git a/node_modules/tar/lib/large-numbers.js b/node_modules/tar/lib/large-numbers.js
index 3e5c99255..ad30bc350 100644
--- a/node_modules/tar/lib/large-numbers.js
+++ b/node_modules/tar/lib/large-numbers.js
@@ -6,7 +6,7 @@ const encode = exports.encode = (num, buf) => {
   if (!Number.isSafeInteger(num))
     // The number is so large that javascript cannot represent it with integer
     // precision.
-    throw TypeError('cannot encode number outside of javascript safe integer range')
+    throw Error('cannot encode number outside of javascript safe integer range')
   else if (num < 0)
     encodeNegative(num, buf)
   else
@@ -50,12 +50,12 @@ const parse = exports.parse = (buf) => {
   else if (pre === 0xff)
     value = twos(buf)
   else
-    throw TypeError('invalid base256 encoding')
+    throw Error('invalid base256 encoding')
 
   if (!Number.isSafeInteger(value))
     // The number is so large that javascript cannot represent it with integer
     // precision.
-    throw TypeError('parsed number outside of javascript safe integer range')
+    throw Error('parsed number outside of javascript safe integer range')
 
   return value
 }
diff --git a/node_modules/tar/lib/list.js b/node_modules/tar/lib/list.js
index 250ebe001..9da3f812c 100644
--- a/node_modules/tar/lib/list.js
+++ b/node_modules/tar/lib/list.js
@@ -1,7 +1,5 @@
 'use strict'
 
-const Buffer = require('./buffer.js')
-
 // XXX: This shares a lot in common with extract.js
 // maybe some DRY opportunity here?
 
diff --git a/node_modules/tar/lib/mkdir.js b/node_modules/tar/lib/mkdir.js
index c6a154c24..381d0e1b3 100644
--- a/node_modules/tar/lib/mkdir.js
+++ b/node_modules/tar/lib/mkdir.js
@@ -76,7 +76,7 @@ const mkdir = module.exports = (dir, opt, cb) => {
     })
 
   if (preserve)
-    return mkdirp(dir, mode, done)
+    return mkdirp(dir, {mode}).then(made => done(null, made), done)
 
   const sub = path.relative(cwd, dir)
   const parts = sub.split(/\/|\\/)
diff --git a/node_modules/tar/lib/mode-fix.js b/node_modules/tar/lib/mode-fix.js
index 3363a3b15..c3758741c 100644
--- a/node_modules/tar/lib/mode-fix.js
+++ b/node_modules/tar/lib/mode-fix.js
@@ -1,6 +1,16 @@
 'use strict'
-module.exports = (mode, isDir) => {
+module.exports = (mode, isDir, portable) => {
   mode &= 0o7777
+
+  // in portable mode, use the minimum reasonable umask
+  // if this system creates files with 0o664 by default
+  // (as some linux distros do), then we'll write the
+  // archive with 0o644 instead.  Also, don't ever create
+  // a file that is not readable/writable by the owner.
+  if (portable) {
+    mode = (mode | 0o600) &~0o22
+  }
+
   // if dirs are readable, then they should be listable
   if (isDir) {
     if (mode & 0o400)
diff --git a/node_modules/tar/lib/pack.js b/node_modules/tar/lib/pack.js
index 857cea910..0fca4ae25 100644
--- a/node_modules/tar/lib/pack.js
+++ b/node_modules/tar/lib/pack.js
@@ -1,7 +1,5 @@
 'use strict'
 
-const Buffer = require('./buffer.js')
-
 // A readable tar stream creator
 // Technically, this is a transform stream that you write paths into,
 // and tar format comes out of.
@@ -62,6 +60,7 @@ const Pack = warner(class Pack extends MiniPass {
     super(opt)
     opt = opt || Object.create(null)
     this.opt = opt
+    this.file = opt.file || ''
     this.cwd = opt.cwd || process.cwd()
     this.maxReadSize = opt.maxReadSize
     this.preservePaths = !!opt.preservePaths
@@ -76,10 +75,13 @@ const Pack = warner(class Pack extends MiniPass {
     if (typeof opt.onwarn === 'function')
       this.on('warn', opt.onwarn)
 
+    this.portable = !!opt.portable
     this.zip = null
     if (opt.gzip) {
       if (typeof opt.gzip !== 'object')
         opt.gzip = {}
+      if (this.portable)
+        opt.gzip.portable = true
       this.zip = new zlib.Gzip(opt.gzip)
       this.zip.on('data', chunk => super.write(chunk))
       this.zip.on('end', _ => super.end())
@@ -88,7 +90,6 @@ const Pack = warner(class Pack extends MiniPass {
     } else
       this.on('drain', this[ONDRAIN])
 
-    this.portable = !!opt.portable
     this.noDirRecurse = !!opt.noDirRecurse
     this.follow = !!opt.follow
     this.noMtime = !!opt.noMtime
@@ -285,9 +286,7 @@ const Pack = warner(class Pack extends MiniPass {
 
   [ENTRYOPT] (job) {
     return {
-      onwarn: (msg, data) => {
-        this.warn(msg, data)
-      },
+      onwarn: (code, msg, data) => this.warn(code, msg, data),
       noPax: this.noPax,
       cwd: this.cwd,
       absolute: job.absolute,
diff --git a/node_modules/tar/lib/parse.js b/node_modules/tar/lib/parse.js
index 43d4383dd..d9a49ad1f 100644
--- a/node_modules/tar/lib/parse.js
+++ b/node_modules/tar/lib/parse.js
@@ -29,7 +29,6 @@ const maxMetaEntrySize = 1024 * 1024
 const Entry = require('./read-entry.js')
 const Pax = require('./pax.js')
 const zlib = require('minizlib')
-const Buffer = require('./buffer.js')
 
 const gzipHeader = Buffer.from([0x1f, 0x8b])
 const STATE = Symbol('state')
@@ -58,6 +57,9 @@ const MAYBEEND = Symbol('maybeEnd')
 const WRITING = Symbol('writing')
 const ABORTED = Symbol('aborted')
 const DONE = Symbol('onDone')
+const SAW_VALID_ENTRY = Symbol('sawValidEntry')
+const SAW_NULL_BLOCK = Symbol('sawNullBlock')
+const SAW_EOF = Symbol('sawEOF')
 
 const noop = _ => true
 
@@ -66,6 +68,21 @@ module.exports = warner(class Parser extends EE {
     opt = opt || {}
     super(opt)
 
+    this.file = opt.file || ''
+
+    // set to boolean false when an entry starts.  1024 bytes of \0
+    // is technically a valid tarball, albeit a boring one.
+    this[SAW_VALID_ENTRY] = null
+
+    // these BADARCHIVE errors can't be detected early. listen on DONE.
+    this.on(DONE, _ => {
+      if (this[STATE] === 'begin' || this[SAW_VALID_ENTRY] === false) {
+        // either less than 1 block of data, or all entries were invalid.
+        // Either way, probably not even a tarball.
+        this.warn('TAR_BAD_ARCHIVE', 'Unrecognized archive format')
+      }
+    })
+
     if (opt.ondone)
       this.on(DONE, opt.ondone)
     else
@@ -95,6 +112,8 @@ module.exports = warner(class Parser extends EE {
     this[ENDED] = false
     this[UNZIP] = null
     this[ABORTED] = false
+    this[SAW_NULL_BLOCK] = false
+    this[SAW_EOF] = false
     if (typeof opt.onwarn === 'function')
       this.on('warn', opt.onwarn)
     if (typeof opt.onentry === 'function')
@@ -102,58 +121,90 @@ module.exports = warner(class Parser extends EE {
   }
 
   [CONSUMEHEADER] (chunk, position) {
+    if (this[SAW_VALID_ENTRY] === null)
+      this[SAW_VALID_ENTRY] = false
     let header
     try {
       header = new Header(chunk, position, this[EX], this[GEX])
     } catch (er) {
-      return this.warn('invalid entry', er)
+      return this.warn('TAR_ENTRY_INVALID', er)
     }
 
-    if (header.nullBlock)
-      this[EMIT]('nullBlock')
-    else if (!header.cksumValid)
-      this.warn('invalid entry', header)
-    else if (!header.path)
-      this.warn('invalid: path is required', header)
-    else {
-      const type = header.type
-      if (/^(Symbolic)?Link$/.test(type) && !header.linkpath)
-        this.warn('invalid: linkpath required', header)
-      else if (!/^(Symbolic)?Link$/.test(type) && header.linkpath)
-        this.warn('invalid: linkpath forbidden', header)
+    if (header.nullBlock) {
+      if (this[SAW_NULL_BLOCK]) {
+        this[SAW_EOF] = true
+        // ending an archive with no entries.  pointless, but legal.
+        if (this[STATE] === 'begin')
+          this[STATE] = 'header'
+        this[EMIT]('eof')
+      } else {
+        this[SAW_NULL_BLOCK] = true
+        this[EMIT]('nullBlock')
+      }
+    } else {
+      this[SAW_NULL_BLOCK] = false
+      if (!header.cksumValid)
+        this.warn('TAR_ENTRY_INVALID', 'checksum failure', {header})
+      else if (!header.path)
+        this.warn('TAR_ENTRY_INVALID', 'path is required', {header})
       else {
-        const entry = this[WRITEENTRY] = new Entry(header, this[EX], this[GEX])
-
-        if (entry.meta) {
-          if (entry.size > this.maxMetaEntrySize) {
-            entry.ignore = true
-            this[EMIT]('ignoredEntry', entry)
-            this[STATE] = 'ignore'
-          } else if (entry.size > 0) {
-            this[META] = ''
-            entry.on('data', c => this[META] += c)
-            this[STATE] = 'meta'
+        const type = header.type
+        if (/^(Symbolic)?Link$/.test(type) && !header.linkpath)
+          this.warn('TAR_ENTRY_INVALID', 'linkpath required', {header})
+        else if (!/^(Symbolic)?Link$/.test(type) && header.linkpath)
+          this.warn('TAR_ENTRY_INVALID', 'linkpath forbidden', {header})
+        else {
+          const entry = this[WRITEENTRY] = new Entry(header, this[EX], this[GEX])
+
+          // we do this for meta & ignored entries as well, because they
+          // are still valid tar, or else we wouldn't know to ignore them
+          if (!this[SAW_VALID_ENTRY]) {
+            if (entry.remain) {
+              // this might be the one!
+              const onend = () => {
+                if (!entry.invalid)
+                  this[SAW_VALID_ENTRY] = true
+              }
+              entry.on('end', onend)
+            } else {
+              this[SAW_VALID_ENTRY] = true
+            }
           }
-        } else {
 
-          this[EX] = null
-          entry.ignore = entry.ignore || !this.filter(entry.path, entry)
-          if (entry.ignore) {
-            this[EMIT]('ignoredEntry', entry)
-            this[STATE] = entry.remain ? 'ignore' : 'begin'
+          if (entry.meta) {
+            if (entry.size > this.maxMetaEntrySize) {
+              entry.ignore = true
+              this[EMIT]('ignoredEntry', entry)
+              this[STATE] = 'ignore'
+              entry.resume()
+            } else if (entry.size > 0) {
+              this[META] = ''
+              entry.on('data', c => this[META] += c)
+              this[STATE] = 'meta'
+            }
           } else {
-            if (entry.remain)
-              this[STATE] = 'body'
-            else {
-              this[STATE] = 'begin'
-              entry.end()
+            this[EX] = null
+            entry.ignore = entry.ignore || !this.filter(entry.path, entry)
+
+            if (entry.ignore) {
+              // probably valid, just not something we care about
+              this[EMIT]('ignoredEntry', entry)
+              this[STATE] = entry.remain ? 'ignore' : 'header'
+              entry.resume()
+            } else {
+              if (entry.remain)
+                this[STATE] = 'body'
+              else {
+                this[STATE] = 'header'
+                entry.end()
+              }
+
+              if (!this[READENTRY]) {
+                this[QUEUE].push(entry)
+                this[NEXTENTRY]()
+              } else
+                this[QUEUE].push(entry)
             }
-
-            if (!this[READENTRY]) {
-              this[QUEUE].push(entry)
-              this[NEXTENTRY]()
-            } else
-              this[QUEUE].push(entry)
           }
         }
       }
@@ -211,7 +262,7 @@ module.exports = warner(class Parser extends EE {
     entry.write(c)
 
     if (!entry.blockRemain) {
-      this[STATE] = 'begin'
+      this[STATE] = 'header'
       this[WRITEENTRY] = null
       entry.end()
     }
@@ -265,11 +316,11 @@ module.exports = warner(class Parser extends EE {
     }
   }
 
-  abort (msg, error) {
+  abort (error) {
     this[ABORTED] = true
-    this.warn(msg, error)
     this.emit('abort', error)
-    this.emit('error', error)
+    // always throws, even in non-strict mode
+    this.warn('TAR_ABORT', error, { recoverable: false })
   }
 
   write (chunk) {
@@ -295,8 +346,7 @@ module.exports = warner(class Parser extends EE {
         this[ENDED] = false
         this[UNZIP] = new zlib.Unzip()
         this[UNZIP].on('data', chunk => this[CONSUMECHUNK](chunk))
-        this[UNZIP].on('error', er =>
-          this.abort(er.message, er))
+        this[UNZIP].on('error', er => this.abort(er))
         this[UNZIP].on('end', _ => {
           this[ENDED] = true
           this[CONSUMECHUNK]()
@@ -341,9 +391,10 @@ module.exports = warner(class Parser extends EE {
       this[EMITTEDEND] = true
       const entry = this[WRITEENTRY]
       if (entry && entry.blockRemain) {
+        // truncated, likely a damaged file
         const have = this[BUFFER] ? this[BUFFER].length : 0
-        this.warn('Truncated input (needed ' + entry.blockRemain +
-                  ' more bytes, only ' + have + ' available)', entry)
+        this.warn('TAR_BAD_ARCHIVE', `Truncated input (needed ${
+          entry.blockRemain} more bytes, only ${have} available)`, {entry})
         if (this[BUFFER])
           entry.write(this[BUFFER])
         entry.end()
@@ -353,11 +404,11 @@ module.exports = warner(class Parser extends EE {
   }
 
   [CONSUMECHUNK] (chunk) {
-    if (this[CONSUMING]) {
+    if (this[CONSUMING])
       this[BUFFERCONCAT](chunk)
-    } else if (!chunk && !this[BUFFER]) {
+    else if (!chunk && !this[BUFFER])
       this[MAYBEEND]()
-    } else {
+    else {
       this[CONSUMING] = true
       if (this[BUFFER]) {
         this[BUFFERCONCAT](chunk)
@@ -368,7 +419,10 @@ module.exports = warner(class Parser extends EE {
         this[CONSUMECHUNKSUB](chunk)
       }
 
-      while (this[BUFFER] && this[BUFFER].length >= 512 && !this[ABORTED]) {
+      while (this[BUFFER] &&
+          this[BUFFER].length >= 512 &&
+          !this[ABORTED] &&
+          !this[SAW_EOF]) {
         const c = this[BUFFER]
         this[BUFFER] = null
         this[CONSUMECHUNKSUB](c)
@@ -385,9 +439,10 @@ module.exports = warner(class Parser extends EE {
     // the buffer.  Advance the position and put any remainder in the buffer.
     let position = 0
     let length = chunk.length
-    while (position + 512 <= length && !this[ABORTED]) {
+    while (position + 512 <= length && !this[ABORTED] && !this[SAW_EOF]) {
       switch (this[STATE]) {
         case 'begin':
+        case 'header':
           this[CONSUMEHEADER](chunk, position)
           position += 512
           break
diff --git a/node_modules/tar/lib/path-reservations.js b/node_modules/tar/lib/path-reservations.js
new file mode 100644
index 000000000..3cf0c2c12
--- /dev/null
+++ b/node_modules/tar/lib/path-reservations.js
@@ -0,0 +1,125 @@
+// A path exclusive reservation system
+// reserve([list, of, paths], fn)
+// When the fn is first in line for all its paths, it
+// is called with a cb that clears the reservation.
+//
+// Used by async unpack to avoid clobbering paths in use,
+// while still allowing maximal safe parallelization.
+
+const assert = require('assert')
+
+module.exports = () => {
+  // path => [function or Set]
+  // A Set object means a directory reservation
+  // A fn is a direct reservation on that path
+  const queues = new Map()
+
+  // fn => {paths:[path,...], dirs:[path, ...]}
+  const reservations = new Map()
+
+  // return a set of parent dirs for a given path
+  const { join } = require('path')
+  const getDirs = path =>
+    join(path).split(/[\\\/]/).slice(0, -1).reduce((set, path) =>
+      set.length ? set.concat(join(set[set.length-1], path)) : [path], [])
+
+  // functions currently running
+  const running = new Set()
+
+  // return the queues for each path the function cares about
+  // fn => {paths, dirs}
+  const getQueues = fn => {
+    const res = reservations.get(fn)
+    /* istanbul ignore if - unpossible */
+    if (!res)
+      throw new Error('function does not have any path reservations')
+    return {
+      paths: res.paths.map(path => queues.get(path)),
+      dirs: [...res.dirs].map(path => queues.get(path)),
+    }
+  }
+
+  // check if fn is first in line for all its paths, and is
+  // included in the first set for all its dir queues
+  const check = fn => {
+    const {paths, dirs} = getQueues(fn)
+    return paths.every(q => q[0] === fn) &&
+      dirs.every(q => q[0] instanceof Set && q[0].has(fn))
+  }
+
+  // run the function if it's first in line and not already running
+  const run = fn => {
+    if (running.has(fn) || !check(fn))
+      return false
+    running.add(fn)
+    fn(() => clear(fn))
+    return true
+  }
+
+  const clear = fn => {
+    if (!running.has(fn))
+      return false
+
+    const { paths, dirs } = reservations.get(fn)
+    const next = new Set()
+
+    paths.forEach(path => {
+      const q = queues.get(path)
+      assert.equal(q[0], fn)
+      if (q.length === 1)
+        queues.delete(path)
+      else {
+        q.shift()
+        if (typeof q[0] === 'function')
+          next.add(q[0])
+        else
+          q[0].forEach(fn => next.add(fn))
+      }
+    })
+
+    dirs.forEach(dir => {
+      const q = queues.get(dir)
+      assert(q[0] instanceof Set)
+      if (q[0].size === 1 && q.length === 1) {
+        queues.delete(dir)
+      } else if (q[0].size === 1) {
+        q.shift()
+
+        // must be a function or else the Set would've been reused
+        next.add(q[0])
+      } else
+        q[0].delete(fn)
+    })
+    running.delete(fn)
+
+    next.forEach(fn => run(fn))
+    return true
+  }
+
+  const reserve = (paths, fn) => {
+    const dirs = new Set(
+      paths.map(path => getDirs(path)).reduce((a, b) => a.concat(b))
+    )
+    reservations.set(fn, {dirs, paths})
+    paths.forEach(path => {
+      const q = queues.get(path)
+      if (!q)
+        queues.set(path, [fn])
+      else
+        q.push(fn)
+    })
+    dirs.forEach(dir => {
+      const q = queues.get(dir)
+      if (!q)
+        queues.set(dir, [new Set([fn])])
+      else if (q[q.length-1] instanceof Set)
+        q[q.length-1].add(fn)
+      else
+        q.push(new Set([fn]))
+    })
+
+    return run(fn)
+  }
+
+  return { check, reserve }
+}
diff --git a/node_modules/tar/lib/pax.js b/node_modules/tar/lib/pax.js
index 9d7e4aba5..214a459f3 100644
--- a/node_modules/tar/lib/pax.js
+++ b/node_modules/tar/lib/pax.js
@@ -1,5 +1,4 @@
 'use strict'
-const Buffer = require('./buffer.js')
 const Header = require('./header.js')
 const path = require('path')
 
diff --git a/node_modules/tar/lib/replace.js b/node_modules/tar/lib/replace.js
index 571cee94a..44126d1f8 100644
--- a/node_modules/tar/lib/replace.js
+++ b/node_modules/tar/lib/replace.js
@@ -1,5 +1,4 @@
 'use strict'
-const Buffer = require('./buffer.js')
 
 // tar -r
 const hlo = require('./high-level-opt.js')
diff --git a/node_modules/tar/lib/unpack.js b/node_modules/tar/lib/unpack.js
index fc765096e..af0e0ffa0 100644
--- a/node_modules/tar/lib/unpack.js
+++ b/node_modules/tar/lib/unpack.js
@@ -1,5 +1,11 @@
 'use strict'
 
+// the PEND/UNPEND stuff tracks whether we're ready to emit end/close yet.
+// but the path reservations are required to avoid race conditions where
+// parallelized unpack ops may mess with one another, due to dependencies
+// (like a Link depending on its target) or destructive operations (like
+// clobbering an fs object to create one of a different type.)
+
 const assert = require('assert')
 const EE = require('events').EventEmitter
 const Parser = require('./parse.js')
@@ -9,9 +15,11 @@ const path = require('path')
 const mkdir = require('./mkdir.js')
 const mkdirSync = mkdir.sync
 const wc = require('./winchars.js')
+const pathReservations = require('./path-reservations.js')
 
 const ONENTRY = Symbol('onEntry')
 const CHECKFS = Symbol('checkFs')
+const CHECKFS2 = Symbol('checkFs2')
 const ISREUSABLE = Symbol('isReusable')
 const MAKEFS = Symbol('makeFs')
 const FILE = Symbol('file')
@@ -34,6 +42,12 @@ const DOCHOWN = Symbol('doChown')
 const UID = Symbol('uid')
 const GID = Symbol('gid')
 const crypto = require('crypto')
+const getFlag = require('./get-write-flag.js')
+
+/* istanbul ignore next */
+const neverCalled = () => {
+  throw new Error('sync function called cb somehow?!?')
+}
 
 // Unlinks on Windows are not atomic.
 //
@@ -91,6 +105,8 @@ class Unpack extends Parser {
 
     super(opt)
 
+    this.reservations = pathReservations()
+
     this.transform = typeof opt.transform === 'function' ? opt.transform : null
 
     this.writable = true
@@ -163,6 +179,15 @@ class Unpack extends Parser {
     this.on('entry', entry => this[ONENTRY](entry))
   }
 
+  // a bad or damaged archive is a warning for Parser, but an error
+  // when extracting.  Mark those errors as unrecoverable, because
+  // the Unpack contract cannot be met.
+  warn (code, msg, data = {}) {
+    if (code === 'TAR_BAD_ARCHIVE' || code === 'TAR_ABORT')
+      data.recoverable = false
+    return super.warn(code, msg, data)
+  }
+
   [MAYBECLOSE] () {
     if (this[ENDED] && this[PENDING] === 0) {
       this.emit('prefinish')
@@ -189,7 +214,10 @@ class Unpack extends Parser {
     if (!this.preservePaths) {
       const p = entry.path
       if (p.match(/(^|\/|\\)\.\.(\\|\/|$)/)) {
-        this.warn('path contains \'..\'', p)
+        this.warn('TAR_ENTRY_ERROR', `path contains '..'`, {
+          entry,
+          path: p,
+        })
         return false
       }
 
@@ -197,8 +225,12 @@ class Unpack extends Parser {
       // so we only need to test this one to get both
       if (path.win32.isAbsolute(p)) {
         const parsed = path.win32.parse(p)
-        this.warn('stripping ' + parsed.root + ' from absolute path', p)
         entry.path = p.substr(parsed.root.length)
+        const r = parsed.root
+        this.warn('TAR_ENTRY_INFO', `stripping ${r} from absolute path`, {
+          entry,
+          path: p,
+        })
       }
     }
 
@@ -250,7 +282,7 @@ class Unpack extends Parser {
     if (er.name === 'CwdError')
       this.emit('error', er)
     else {
-      this.warn(er.message, er)
+      this.warn('TAR_ENTRY_ERROR', er, {entry})
       this[UNPEND]()
       entry.resume()
     }
@@ -291,9 +323,10 @@ class Unpack extends Parser {
     return uint32(this.gid, entry.gid, this.processGid)
   }
 
-  [FILE] (entry) {
+  [FILE] (entry, fullyDone) {
     const mode = entry.mode & 0o7777 || this.fmode
     const stream = new fsm.WriteStream(entry.absolute, {
+      flags: getFlag(entry.size),
       mode: mode,
       autoClose: false
     })
@@ -304,8 +337,12 @@ class Unpack extends Parser {
       if (er)
         return this[ONERROR](er, entry)
 
-      if (--actions === 0)
-        fs.close(stream.fd, _ => this[UNPEND]())
+      if (--actions === 0) {
+        fs.close(stream.fd, er => {
+          fullyDone()
+          er ? this[ONERROR](er, entry) : this[UNPEND]()
+        })
+      }
     }
 
     stream.on('finish', _ => {
@@ -344,15 +381,18 @@ class Unpack extends Parser {
     tx.pipe(stream)
   }
 
-  [DIRECTORY] (entry) {
+  [DIRECTORY] (entry, fullyDone) {
     const mode = entry.mode & 0o7777 || this.dmode
     this[MKDIR](entry.absolute, mode, er => {
-      if (er)
+      if (er) {
+        fullyDone()
         return this[ONERROR](er, entry)
+      }
 
       let actions = 1
       const done = _ => {
         if (--actions === 0) {
+          fullyDone()
           this[UNPEND]()
           entry.resume()
         }
@@ -373,16 +413,18 @@ class Unpack extends Parser {
   }
 
   [UNSUPPORTED] (entry) {
-    this.warn('unsupported entry type: ' + entry.type, entry)
+    entry.unsupported = true
+    this.warn('TAR_ENTRY_UNSUPPORTED',
+      `unsupported entry type: ${entry.type}`, {entry})
     entry.resume()
   }
 
-  [SYMLINK] (entry) {
-    this[LINK](entry, entry.linkpath, 'symlink')
+  [SYMLINK] (entry, done) {
+    this[LINK](entry, entry.linkpath, 'symlink', done)
   }
 
-  [HARDLINK] (entry) {
-    this[LINK](entry, path.resolve(this.cwd, entry.linkpath), 'link')
+  [HARDLINK] (entry, done) {
+    this[LINK](entry, path.resolve(this.cwd, entry.linkpath), 'link', done)
   }
 
   [PEND] () {
@@ -413,29 +455,40 @@ class Unpack extends Parser {
   // check if a thing is there, and if so, try to clobber it
   [CHECKFS] (entry) {
     this[PEND]()
+    const paths = [entry.path]
+    if (entry.linkpath)
+      paths.push(entry.linkpath)
+    this.reservations.reserve(paths, done => this[CHECKFS2](entry, done))
+  }
+  [CHECKFS2] (entry, done) {
     this[MKDIR](path.dirname(entry.absolute), this.dmode, er => {
-      if (er)
+      if (er) {
+        done()
         return this[ONERROR](er, entry)
+      }
       fs.lstat(entry.absolute, (er, st) => {
-        if (st && (this.keep || this.newer && st.mtime > entry.mtime))
+        if (st && (this.keep || this.newer && st.mtime > entry.mtime)) {
           this[SKIP](entry)
-        else if (er || this[ISREUSABLE](entry, st))
-          this[MAKEFS](null, entry)
+          done()
+        } else if (er || this[ISREUSABLE](entry, st)) {
+          this[MAKEFS](null, entry, done)
+        }
         else if (st.isDirectory()) {
           if (entry.type === 'Directory') {
             if (!entry.mode || (st.mode & 0o7777) === entry.mode)
-              this[MAKEFS](null, entry)
+              this[MAKEFS](null, entry, done)
             else
-              fs.chmod(entry.absolute, entry.mode, er => this[MAKEFS](er, entry))
+              fs.chmod(entry.absolute, entry.mode,
+                er => this[MAKEFS](er, entry, done))
           } else
-            fs.rmdir(entry.absolute, er => this[MAKEFS](er, entry))
+            fs.rmdir(entry.absolute, er => this[MAKEFS](er, entry, done))
         } else
-          unlinkFile(entry.absolute, er => this[MAKEFS](er, entry))
+          unlinkFile(entry.absolute, er => this[MAKEFS](er, entry, done))
       })
     })
   }
 
-  [MAKEFS] (er, entry) {
+  [MAKEFS] (er, entry, done) {
     if (er)
       return this[ONERROR](er, entry)
 
@@ -443,25 +496,26 @@ class Unpack extends Parser {
       case 'File':
       case 'OldFile':
       case 'ContiguousFile':
-        return this[FILE](entry)
+        return this[FILE](entry, done)
 
       case 'Link':
-        return this[HARDLINK](entry)
+        return this[HARDLINK](entry, done)
 
       case 'SymbolicLink':
-        return this[SYMLINK](entry)
+        return this[SYMLINK](entry, done)
 
       case 'Directory':
       case 'GNUDumpDir':
-        return this[DIRECTORY](entry)
+        return this[DIRECTORY](entry, done)
     }
   }
 
-  [LINK] (entry, linkpath, link) {
+  [LINK] (entry, linkpath, link, done) {
     // XXX: get the type ('file' or 'dir') for windows
     fs[link](linkpath, entry.absolute, er => {
       if (er)
         return this[ONERROR](er, entry)
+      done()
       this[UNPEND]()
       entry.resume()
     })
@@ -474,7 +528,7 @@ class UnpackSync extends Unpack {
   }
 
   [CHECKFS] (entry) {
-    const er = this[MKDIR](path.dirname(entry.absolute), this.dmode)
+    const er = this[MKDIR](path.dirname(entry.absolute), this.dmode, neverCalled)
     if (er)
       return this[ONERROR](er, entry)
     try {
@@ -482,7 +536,7 @@ class UnpackSync extends Unpack {
       if (this.keep || this.newer && st.mtime > entry.mtime)
         return this[SKIP](entry)
       else if (this[ISREUSABLE](entry, st))
-        return this[MAKEFS](null, entry)
+        return this[MAKEFS](null, entry, neverCalled)
       else {
         try {
           if (st.isDirectory()) {
@@ -493,29 +547,34 @@ class UnpackSync extends Unpack {
               fs.rmdirSync(entry.absolute)
           } else
             unlinkFileSync(entry.absolute)
-          return this[MAKEFS](null, entry)
+          return this[MAKEFS](null, entry, neverCalled)
         } catch (er) {
           return this[ONERROR](er, entry)
         }
       }
     } catch (er) {
-      return this[MAKEFS](null, entry)
+      return this[MAKEFS](null, entry, neverCalled)
     }
   }
 
-  [FILE] (entry) {
+  [FILE] (entry, _) {
     const mode = entry.mode & 0o7777 || this.fmode
 
     const oner = er => {
-      try { fs.closeSync(fd) } catch (_) {}
-      if (er)
-        this[ONERROR](er, entry)
+      let closeError
+      try {
+        fs.closeSync(fd)
+      } catch (e) {
+        closeError = e
+      }
+      if (er || closeError)
+        this[ONERROR](er || closeError, entry)
     }
 
     let stream
     let fd
     try {
-      fd = fs.openSync(entry.absolute, 'w', mode)
+      fd = fs.openSync(entry.absolute, getFlag(entry.size), mode)
     } catch (er) {
       return oner(er)
     }
@@ -570,7 +629,7 @@ class UnpackSync extends Unpack {
     })
   }
 
-  [DIRECTORY] (entry) {
+  [DIRECTORY] (entry, _) {
     const mode = entry.mode & 0o7777 || this.dmode
     const er = this[MKDIR](entry.absolute, mode)
     if (er)
@@ -607,7 +666,7 @@ class UnpackSync extends Unpack {
     }
   }
 
-  [LINK] (entry, linkpath, link) {
+  [LINK] (entry, linkpath, link, _) {
     try {
       fs[link + 'Sync'](linkpath, entry.absolute)
       entry.resume()
diff --git a/node_modules/tar/lib/warn-mixin.js b/node_modules/tar/lib/warn-mixin.js
index 94a4b9b99..11eb52cc6 100644
--- a/node_modules/tar/lib/warn-mixin.js
+++ b/node_modules/tar/lib/warn-mixin.js
@@ -1,14 +1,21 @@
 'use strict'
 module.exports = Base => class extends Base {
-  warn (msg, data) {
-    if (!this.strict)
-      this.emit('warn', msg, data)
-    else if (data instanceof Error)
-      this.emit('error', data)
-    else {
-      const er = new Error(msg)
-      er.data = data
-      this.emit('error', er)
-    }
+  warn (code, message, data = {}) {
+    if (this.file)
+      data.file = this.file
+    if (this.cwd)
+      data.cwd = this.cwd
+    data.code = message instanceof Error && message.code || code
+    data.tarCode = code
+    if (!this.strict && data.recoverable !== false) {
+      if (message instanceof Error) {
+        data = Object.assign(message, data)
+        message = message.message
+      }
+      this.emit('warn', data.tarCode, message, data)
+    } else if (message instanceof Error) {
+      this.emit('error', Object.assign(message, data))
+    } else
+      this.emit('error', Object.assign(new Error(`${code}: ${message}`), data))
   }
 }
diff --git a/node_modules/tar/lib/write-entry.js b/node_modules/tar/lib/write-entry.js
index 0c019006f..0e33cb59d 100644
--- a/node_modules/tar/lib/write-entry.js
+++ b/node_modules/tar/lib/write-entry.js
@@ -1,5 +1,4 @@
 'use strict'
-const Buffer = require('./buffer.js')
 const MiniPass = require('minipass')
 const Pax = require('./pax.js')
 const Header = require('./header.js')
@@ -54,12 +53,13 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
     if (typeof opt.onwarn === 'function')
       this.on('warn', opt.onwarn)
 
+    let pathWarn = false
     if (!this.preservePaths && path.win32.isAbsolute(p)) {
       // absolutes on posix are also absolutes on win32
       // so we only need to test this one to get both
       const parsed = path.win32.parse(p)
-      this.warn('stripping ' + parsed.root + ' from absolute path', p)
       this.path = p.substr(parsed.root.length)
+      pathWarn = parsed.root
     }
 
     this.win32 = !!opt.win32 || process.platform === 'win32'
@@ -73,6 +73,13 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
     if (this.path === '')
       this.path = './'
 
+    if (pathWarn) {
+      this.warn('TAR_ENTRY_INFO', `stripping ${pathWarn} from absolute path`, {
+        entry: this,
+        path: pathWarn + this.path,
+      })
+    }
+
     if (this.statCache.has(this.absolute))
       this[ONLSTAT](this.statCache.get(this.absolute))
     else
@@ -108,7 +115,7 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
   }
 
   [MODE] (mode) {
-    return modeFix(mode, this.type === 'Directory')
+    return modeFix(mode, this.type === 'Directory', this.portable)
   }
 
   [HEADER] () {
@@ -167,14 +174,14 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
   }
 
   [ONREADLINK] (linkpath) {
-    this.linkpath = linkpath
+    this.linkpath = linkpath.replace(/\\/g, '/')
     this[HEADER]()
     this.end()
   }
 
   [HARDLINK] (linkpath) {
     this.type = 'Link'
-    this.linkpath = path.relative(this.cwd, linkpath)
+    this.linkpath = path.relative(this.cwd, linkpath).replace(/\\/g, '/')
     this.stat.size = 0
     this[HEADER]()
     this.end()
@@ -215,8 +222,11 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
 
   [READ] (fd, buf, offset, length, pos, remain, blockRemain) {
     fs.read(fd, buf, offset, length, pos, (er, bytesRead) => {
-      if (er)
-        return this[CLOSE](fd, _ => this.emit('error', er))
+      if (er) {
+        // ignoring the error from close(2) is a bad practice, but at
+        // this point we already have an error, don't need another one
+        return this[CLOSE](fd, () => this.emit('error', er))
+      }
       this[ONREAD](fd, buf, offset, length, pos, remain, blockRemain, bytesRead)
     })
   }
@@ -231,8 +241,7 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
       er.path = this.absolute
       er.syscall = 'read'
       er.code = 'EOF'
-      this[CLOSE](fd, _ => _)
-      return this.emit('error', er)
+      return this[CLOSE](fd, () => this.emit('error', er))
     }
 
     if (bytesRead > remain) {
@@ -240,8 +249,7 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
       er.path = this.absolute
       er.syscall = 'read'
       er.code = 'EOF'
-      this[CLOSE](fd, _ => _)
-      return this.emit('error', er)
+      return this[CLOSE](fd, () => this.emit('error', er))
     }
 
     // null out the rest of the buffer, if we could fit the block padding
@@ -265,9 +273,7 @@ const WriteEntry = warner(class WriteEntry extends MiniPass {
     if (!remain) {
       if (blockRemain)
         this.write(Buffer.alloc(blockRemain))
-      this.end()
-      this[CLOSE](fd, _ => _)
-      return
+      return this[CLOSE](fd, er => er ? this.emit('error', er) : this.end())
     }
 
     if (offset >= length) {
@@ -303,13 +309,16 @@ class WriteEntrySync extends WriteEntry {
       this[ONREAD](fd, buf, offset, length, pos, remain, blockRemain, bytesRead)
       threw = false
     } finally {
+      // ignoring the error from close(2) is a bad practice, but at
+      // this point we already have an error, don't need another one
       if (threw)
-        try { this[CLOSE](fd) } catch (er) {}
+        try { this[CLOSE](fd, () => {}) } catch (er) {}
     }
   }
 
-  [CLOSE] (fd) {
+  [CLOSE] (fd, cb) {
     fs.closeSync(fd)
+    cb()
   }
 }
 
@@ -343,12 +352,10 @@ const WriteEntryTar = warner(class WriteEntryTar extends MiniPass {
     if (typeof opt.onwarn === 'function')
       this.on('warn', opt.onwarn)
 
+    let pathWarn = false
     if (path.isAbsolute(this.path) && !this.preservePaths) {
       const parsed = path.parse(this.path)
-      this.warn(
-        'stripping ' + parsed.root + ' from absolute path',
-        this.path
-      )
+      pathWarn = parsed.root
       this.path = this.path.substr(parsed.root.length)
     }
 
@@ -371,6 +378,13 @@ const WriteEntryTar = warner(class WriteEntryTar extends MiniPass {
       ctime: this.portable ? null : this.ctime
     })
 
+    if (pathWarn) {
+      this.warn('TAR_ENTRY_INFO', `stripping ${pathWarn} from absolute path`, {
+        entry: this,
+        path: pathWarn + this.path,
+      })
+    }
+
     if (this.header.encode() && !this.noPax)
       super.write(new Pax({
         atime: this.portable ? null : this.atime,
@@ -392,7 +406,7 @@ const WriteEntryTar = warner(class WriteEntryTar extends MiniPass {
   }
 
   [MODE] (mode) {
-    return modeFix(mode, this.type === 'Directory')
+    return modeFix(mode, this.type === 'Directory', this.portable)
   }
 
   write (data) {
diff --git a/node_modules/tar/node_modules/.bin/mkdirp b/node_modules/tar/node_modules/.bin/mkdirp
new file mode 120000
index 000000000..017896ceb
--- /dev/null
+++ b/node_modules/tar/node_modules/.bin/mkdirp
@@ -0,0 +1 @@
+../mkdirp/bin/cmd.js
\ No newline at end of file
diff --git a/node_modules/tar/node_modules/minipass/README.md b/node_modules/tar/node_modules/minipass/README.md
index c989beea0..32ace2fb9 100644
--- a/node_modules/tar/node_modules/minipass/README.md
+++ b/node_modules/tar/node_modules/minipass/README.md
@@ -7,32 +7,32 @@ stream](https://nodejs.org/api/stream.html#stream_class_stream_passthrough)
 fast](https://docs.google.com/spreadsheets/d/1oObKSrVwLX_7Ut4Z6g3fZW-AX1j1-k6w-cDsrkaSbHM/edit#gid=0)
 for objects, strings, and buffers.
 
-Supports pipe()ing (including multi-pipe() and backpressure
-transmission), buffering data until either a `data` event handler or
-`pipe()` is added (so you don't lose the first chunk), and most other
-cases where PassThrough is a good idea.
+Supports pipe()ing (including multi-pipe() and backpressure transmission),
+buffering data until either a `data` event handler or `pipe()` is added (so
+you don't lose the first chunk), and most other cases where PassThrough is
+a good idea.
 
-There is a `read()` method, but it's much more efficient to consume
-data from this stream via `'data'` events or by calling `pipe()` into
-some other stream.  Calling `read()` requires the buffer to be
-flattened in some cases, which requires copying memory.
+There is a `read()` method, but it's much more efficient to consume data
+from this stream via `'data'` events or by calling `pipe()` into some other
+stream.  Calling `read()` requires the buffer to be flattened in some
+cases, which requires copying memory.
 
-There is also no `unpipe()` method.  Once you start piping, there is
-no stopping it!
+There is also no `unpipe()` method.  Once you start piping, there is no
+stopping it!
 
-If you set `objectMode: true` in the options, then whatever is written
-will be emitted.  Otherwise, it'll do a minimal amount of Buffer
-copying to ensure proper Streams semantics when `read(n)` is called.
+If you set `objectMode: true` in the options, then whatever is written will
+be emitted.  Otherwise, it'll do a minimal amount of Buffer copying to
+ensure proper Streams semantics when `read(n)` is called.
 
 `objectMode` can also be set by doing `stream.objectMode = true`, or by
 writing any non-string/non-buffer data.  `objectMode` cannot be set to
 false once it is set.
 
-This is not a `through` or `through2` stream.  It doesn't transform
-the data, it just passes it right through.  If you want to transform
-the data, extend the class, and override the `write()` method.  Once
-you're done transforming the data however you want, call
-`super.write()` with the transform output.
+This is not a `through` or `through2` stream.  It doesn't transform the
+data, it just passes it right through.  If you want to transform the data,
+extend the class, and override the `write()` method.  Once you're done
+transforming the data however you want, call `super.write()` with the
+transform output.
 
 For some examples of streams that extend Minipass in various ways, check
 out:
@@ -46,6 +46,7 @@ out:
 - [tap](http://npm.im/tap)
 - [tap-parser](http://npm.im/tap)
 - [treport](http://npm.im/tap)
+- [minipass-fetch](http://npm.im/minipass-fetch)
 
 ## Differences from Node.js Streams
 
@@ -252,7 +253,8 @@ src.pipe(tee)
 
 ## USAGE
 
-It's a stream!  Use it like a stream and it'll most likely do what you want.
+It's a stream!  Use it like a stream and it'll most likely do what you
+want.
 
 ```js
 const Minipass = require('minipass')
@@ -280,31 +282,30 @@ streams.
 
 * `write(chunk, [encoding], [callback])` - Put data in.  (Note that, in the
   base Minipass class, the same data will come out.)  Returns `false` if
-  the stream will buffer the next write, or true if it's still in
-  "flowing" mode.
+  the stream will buffer the next write, or true if it's still in "flowing"
+  mode.
 * `end([chunk, [encoding]], [callback])` - Signal that you have no more
   data to write.  This will queue an `end` event to be fired when all the
   data has been consumed.
-* `setEncoding(encoding)` - Set the encoding for data coming of the
-  stream.  This can only be done once.
+* `setEncoding(encoding)` - Set the encoding for data coming of the stream.
+  This can only be done once.
 * `pause()` - No more data for a while, please.  This also prevents `end`
   from being emitted for empty streams until the stream is resumed.
-* `resume()` - Resume the stream.  If there's data in the buffer, it is
-  all discarded.  Any buffered events are immediately emitted.
+* `resume()` - Resume the stream.  If there's data in the buffer, it is all
+  discarded.  Any buffered events are immediately emitted.
 * `pipe(dest)` - Send all output to the stream provided.  There is no way
   to unpipe.  When data is emitted, it is immediately written to any and
   all pipe destinations.
-* `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters.
-  Some events are given special treatment, however.  (See below under
-  "events".)
+* `on(ev, fn)`, `emit(ev, fn)` - Minipass streams are EventEmitters.  Some
+  events are given special treatment, however.  (See below under "events".)
 * `promise()` - Returns a Promise that resolves when the stream emits
   `end`, or rejects if the stream emits `error`.
 * `collect()` - Return a Promise that resolves on `end` with an array
-  containing each chunk of data that was emitted, or rejects if the
-  stream emits `error`.  Note that this consumes the stream data.
-* `concat()` - Same as `collect()`, but concatenates the data into a
-  single Buffer object.  Will reject the returned promise if the stream is
-  in objectMode, or if it goes into objectMode by the end of the data.
+  containing each chunk of data that was emitted, or rejects if the stream
+  emits `error`.  Note that this consumes the stream data.
+* `concat()` - Same as `collect()`, but concatenates the data into a single
+  Buffer object.  Will reject the returned promise if the stream is in
+  objectMode, or if it goes into objectMode by the end of the data.
 * `read(n)` - Consume `n` bytes of data out of the buffer.  If `n` is not
   provided, then consume all of it.  If `n` bytes are not available, then
   it returns null.  **Note** consuming streams in this way is less
@@ -421,8 +422,8 @@ mp.concat().then(onebigchunk => {
 
 ### iteration
 
-You can iterate over streams synchronously or asynchronously in
-platforms that support it.
+You can iterate over streams synchronously or asynchronously in platforms
+that support it.
 
 Synchronous iteration will end when the currently available data is
 consumed, even if the `end` event has not been reached.  In string and
@@ -430,9 +431,8 @@ buffer mode, the data is concatenated, so unless multiple writes are
 occurring in the same tick as the `read()`, sync iteration loops will
 generally only have a single iteration.
 
-To consume chunks in this way exactly as they have been written, with
-no flattening, create the stream with the `{ objectMode: true }`
-option.
+To consume chunks in this way exactly as they have been written, with no
+flattening, create the stream with the `{ objectMode: true }` option.
 
 ```js
 const mp = new Minipass({ objectMode: true })
diff --git a/node_modules/tar/node_modules/minipass/index.js b/node_modules/tar/node_modules/minipass/index.js
index c072352d4..55ea0f3dd 100644
--- a/node_modules/tar/node_modules/minipass/index.js
+++ b/node_modules/tar/node_modules/minipass/index.js
@@ -1,5 +1,6 @@
 'use strict'
 const EE = require('events')
+const Stream = require('stream')
 const Yallist = require('yallist')
 const SD = require('string_decoder').StringDecoder
 
@@ -29,12 +30,6 @@ const ASYNCITERATOR = doIter && Symbol.asyncIterator
 const ITERATOR = doIter && Symbol.iterator
   || Symbol('iterator not implemented')
 
-// Buffer in node 4.x < 4.5.0 doesn't have working Buffer.from
-// or Buffer.alloc, and Buffer in node 10 deprecated the ctor.
-// .M, this is fine .\^/M..
-const B = Buffer.alloc ? Buffer
-  : /* istanbul ignore next */ require('safe-buffer').Buffer
-
 // events that mean 'the stream is over'
 // these are treated specially, and re-emitted
 // if they are listened for after emitting.
@@ -49,9 +44,9 @@ const isArrayBuffer = b => b instanceof ArrayBuffer ||
   b.constructor.name === 'ArrayBuffer' &&
   b.byteLength >= 0
 
-const isArrayBufferView = b => !B.isBuffer(b) && ArrayBuffer.isView(b)
+const isArrayBufferView = b => !Buffer.isBuffer(b) && ArrayBuffer.isView(b)
 
-module.exports = class Minipass extends EE {
+module.exports = class Minipass extends Stream {
   constructor (options) {
     super()
     this[FLOWING] = false
@@ -126,11 +121,11 @@ module.exports = class Minipass extends EE {
     // at some point in the future, we may want to do the opposite!
     // leave strings and buffers as-is
     // anything else switches us into object mode
-    if (!this[OBJECTMODE] && !B.isBuffer(chunk)) {
+    if (!this[OBJECTMODE] && !Buffer.isBuffer(chunk)) {
       if (isArrayBufferView(chunk))
-        chunk = B.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)
+        chunk = Buffer.from(chunk.buffer, chunk.byteOffset, chunk.byteLength)
       else if (isArrayBuffer(chunk))
-        chunk = B.from(chunk)
+        chunk = Buffer.from(chunk)
       else if (typeof chunk !== 'string')
         // use the setter so we throw if we have encoding set
         this.objectMode = true
@@ -152,10 +147,10 @@ module.exports = class Minipass extends EE {
     if (typeof chunk === 'string' && !this[OBJECTMODE] &&
         // unless it is a string already ready for us to use
         !(encoding === this[ENCODING] && !this[DECODER].lastNeed)) {
-      chunk = B.from(chunk, encoding)
+      chunk = Buffer.from(chunk, encoding)
     }
 
-    if (B.isBuffer(chunk) && this[ENCODING])
+    if (Buffer.isBuffer(chunk) && this[ENCODING])
       chunk = this[DECODER].write(chunk)
 
     try {
@@ -188,7 +183,7 @@ module.exports = class Minipass extends EE {
           ])
         else
           this.buffer = new Yallist([
-            B.concat(Array.from(this.buffer), this[BUFFERLENGTH])
+            Buffer.concat(Array.from(this.buffer), this[BUFFERLENGTH])
           ])
       }
 
@@ -423,12 +418,17 @@ module.exports = class Minipass extends EE {
   // const all = await stream.collect()
   collect () {
     const buf = []
-    buf.dataLength = 0
+    if (!this[OBJECTMODE])
+      buf.dataLength = 0
+    // set the promise first, in case an error is raised
+    // by triggering the flow here.
+    const p = this.promise()
     this.on('data', c => {
       buf.push(c)
-      buf.dataLength += c.length
+      if (!this[OBJECTMODE])
+        buf.dataLength += c.length
     })
-    return this.promise().then(() => buf)
+    return p.then(() => buf)
   }
 
   // const data = await stream.concat()
@@ -438,7 +438,7 @@ module.exports = class Minipass extends EE {
       : this.collect().then(buf =>
           this[OBJECTMODE]
             ? Promise.reject(new Error('cannot concat in objectMode'))
-            : this[ENCODING] ? buf.join('') : B.concat(buf, buf.dataLength))
+            : this[ENCODING] ? buf.join('') : Buffer.concat(buf, buf.dataLength))
   }
 
   // stream.promise().then(() => done, er => emitted error)
@@ -529,9 +529,10 @@ module.exports = class Minipass extends EE {
   }
 
   static isStream (s) {
-    return !!s && (s instanceof Minipass || s instanceof EE && (
-      typeof s.pipe === 'function' || // readable
-      (typeof s.write === 'function' && typeof s.end === 'function') // writable
-    ))
+    return !!s && (s instanceof Minipass || s instanceof Stream ||
+      s instanceof EE && (
+        typeof s.pipe === 'function' || // readable
+        (typeof s.write === 'function' && typeof s.end === 'function') // writable
+      ))
   }
 }
diff --git a/node_modules/tar/node_modules/minipass/package.json b/node_modules/tar/node_modules/minipass/package.json
index aeb390253..568682bc2 100644
--- a/node_modules/tar/node_modules/minipass/package.json
+++ b/node_modules/tar/node_modules/minipass/package.json
@@ -1,27 +1,27 @@
 {
-  "_from": "minipass@^2.8.6",
-  "_id": "minipass@2.9.0",
+  "_from": "minipass@^3.0.0",
+  "_id": "minipass@3.1.1",
   "_inBundle": false,
-  "_integrity": "sha512-wxfUjg9WebH+CUDX/CdbRlh5SmfZiy/hpkxaRI16Y9W56Pa75sWgd/rvFilSgrauD9NyFymP/+JFV3KwzIsJeg==",
+  "_integrity": "sha512-UFqVihv6PQgwj8/yTGvl9kPz7xIAY+R5z6XYjRInD3Gk3qx6QGSD6zEcpeG4Dy/lQnv1J6zv8ejV90hyYIKf3w==",
   "_location": "/tar/minipass",
   "_phantomChildren": {},
   "_requested": {
     "type": "range",
     "registry": true,
-    "raw": "minipass@^2.8.6",
+    "raw": "minipass@^3.0.0",
     "name": "minipass",
     "escapedName": "minipass",
-    "rawSpec": "^2.8.6",
+    "rawSpec": "^3.0.0",
     "saveSpec": null,
-    "fetchSpec": "^2.8.6"
+    "fetchSpec": "^3.0.0"
   },
   "_requiredBy": [
     "/tar"
   ],
-  "_resolved": "https://registry.npmjs.org/minipass/-/minipass-2.9.0.tgz",
-  "_shasum": "e713762e7d3e32fed803115cf93e04bca9fcc9a6",
-  "_spec": "minipass@^2.8.6",
-  "_where": "/Users/mperrotte/npminc/cli/node_modules/tar",
+  "_resolved": "https://registry.npmjs.org/minipass/-/minipass-3.1.1.tgz",
+  "_shasum": "7607ce778472a185ad6d89082aa2070f79cedcd5",
+  "_spec": "minipass@^3.0.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/tar",
   "author": {
     "name": "Isaac Z. Schlueter",
     "email": "i@izs.me",
@@ -32,8 +32,7 @@
   },
   "bundleDependencies": false,
   "dependencies": {
-    "safe-buffer": "^5.1.2",
-    "yallist": "^3.0.0"
+    "yallist": "^4.0.0"
   },
   "deprecated": false,
   "description": "minimal implementation of a PassThrough stream",
@@ -42,6 +41,9 @@
     "tap": "^14.6.5",
     "through2": "^2.0.3"
   },
+  "engines": {
+    "node": ">=8"
+  },
   "files": [
     "index.js"
   ],
@@ -59,12 +61,12 @@
   },
   "scripts": {
     "postpublish": "git push origin --follow-tags",
-    "postversion": "npm publish",
+    "postversion": "npm publish --tag=next",
     "preversion": "npm test",
     "test": "tap"
   },
   "tap": {
     "check-coverage": true
   },
-  "version": "2.9.0"
+  "version": "3.1.1"
 }
diff --git a/node_modules/tar/node_modules/mkdirp/CHANGELOG.md b/node_modules/tar/node_modules/mkdirp/CHANGELOG.md
new file mode 100644
index 000000000..81458380b
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/CHANGELOG.md
@@ -0,0 +1,15 @@
+# Changers Lorgs!
+
+## 1.0
+
+Full rewrite.  Essentially a brand new module.
+
+- Return a promise instead of taking a callback.
+- Use native `fs.mkdir(path, { recursive: true })` when available.
+- Drop support for outdated Node.js versions.  (Technically still works on
+  Node.js v8, but only 10 and above are officially supported.)
+
+## 0.x
+
+Original and most widely used recursive directory creation implementation
+in JavaScript, dating back to 2010.
diff --git a/node_modules/tar/node_modules/mkdirp/LICENSE b/node_modules/tar/node_modules/mkdirp/LICENSE
new file mode 100644
index 000000000..13fcd15f0
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/LICENSE
@@ -0,0 +1,21 @@
+Copyright James Halliday (mail@substack.net) and Isaac Z. Schlueter (i@izs.me)
+
+This project is free software released under the MIT license:
+
+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/node_modules/tar/node_modules/mkdirp/bin/cmd.js b/node_modules/tar/node_modules/mkdirp/bin/cmd.js
new file mode 100755
index 000000000..6e0aa8dc4
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/bin/cmd.js
@@ -0,0 +1,68 @@
+#!/usr/bin/env node
+
+const usage = () => `
+usage: mkdirp [DIR1,DIR2..] {OPTIONS}
+
+  Create each supplied directory including any necessary parent directories
+  that don't yet exist.
+
+  If the directory already exists, do nothing.
+
+OPTIONS are:
+
+  -m<mode>       If a directory needs to be created, set the mode as an octal
+  --mode=<mode>  permission string.
+
+  -v --version   Print the mkdirp version number
+
+  -h --help      Print this helpful banner
+
+  -p --print     Print the first directories created for each path provided
+
+  --manual       Use manual implementation, even if native is available
+`
+
+const dirs = []
+const opts = {}
+let print = false
+let dashdash = false
+let manual = false
+for (const arg of process.argv.slice(2)) {
+  if (dashdash)
+    dirs.push(arg)
+  else if (arg === '--')
+    dashdash = true
+  else if (arg === '--manual')
+    manual = true
+  else if (/^-h/.test(arg) || /^--help/.test(arg)) {
+    console.log(usage())
+    process.exit(0)
+  } else if (arg === '-v' || arg === '--version') {
+    console.log(require('../package.json').version)
+    process.exit(0)
+  } else if (arg === '-p' || arg === '--print') {
+    print = true
+  } else if (/^-m/.test(arg) || /^--mode=/.test(arg)) {
+    const mode = parseInt(arg.replace(/^(-m|--mode=)/, ''), 8)
+    if (isNaN(mode)) {
+      console.error(`invalid mode argument: ${arg}\nMust be an octal number.`)
+      process.exit(1)
+    }
+    opts.mode = mode
+  } else
+    dirs.push(arg)
+}
+
+const mkdirp = require('../')
+const impl = manual ? mkdirp.manual : mkdirp
+if (dirs.length === 0)
+  console.error(usage())
+
+Promise.all(dirs.map(dir => impl(dir, opts)))
+  .then(made => print ? made.forEach(m => m && console.log(m)) : null)
+  .catch(er => {
+    console.error(er.message)
+    if (er.code)
+      console.error('  code: ' + er.code)
+    process.exit(1)
+  })
diff --git a/node_modules/tar/node_modules/mkdirp/index.js b/node_modules/tar/node_modules/mkdirp/index.js
new file mode 100644
index 000000000..ad7a16c9f
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/index.js
@@ -0,0 +1,31 @@
+const optsArg = require('./lib/opts-arg.js')
+const pathArg = require('./lib/path-arg.js')
+
+const {mkdirpNative, mkdirpNativeSync} = require('./lib/mkdirp-native.js')
+const {mkdirpManual, mkdirpManualSync} = require('./lib/mkdirp-manual.js')
+const {useNative, useNativeSync} = require('./lib/use-native.js')
+
+
+const mkdirp = (path, opts) => {
+  path = pathArg(path)
+  opts = optsArg(opts)
+  return useNative(opts)
+    ? mkdirpNative(path, opts)
+    : mkdirpManual(path, opts)
+}
+
+const mkdirpSync = (path, opts) => {
+  path = pathArg(path)
+  opts = optsArg(opts)
+  return useNativeSync(opts)
+    ? mkdirpNativeSync(path, opts)
+    : mkdirpManualSync(path, opts)
+}
+
+mkdirp.sync = mkdirpSync
+mkdirp.native = (path, opts) => mkdirpNative(pathArg(path), optsArg(opts))
+mkdirp.manual = (path, opts) => mkdirpManual(pathArg(path), optsArg(opts))
+mkdirp.nativeSync = (path, opts) => mkdirpNativeSync(pathArg(path), optsArg(opts))
+mkdirp.manualSync = (path, opts) => mkdirpManualSync(pathArg(path), optsArg(opts))
+
+module.exports = mkdirp
diff --git a/node_modules/tar/node_modules/mkdirp/lib/find-made.js b/node_modules/tar/node_modules/mkdirp/lib/find-made.js
new file mode 100644
index 000000000..022e492c0
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/lib/find-made.js
@@ -0,0 +1,29 @@
+const {dirname} = require('path')
+
+const findMade = (opts, parent, path = undefined) => {
+  // we never want the 'made' return value to be a root directory
+  if (path === parent)
+    return Promise.resolve()
+
+  return opts.statAsync(parent).then(
+    st => st.isDirectory() ? path : undefined, // will fail later
+    er => er.code === 'ENOENT'
+      ? findMade(opts, dirname(parent), parent)
+      : undefined
+  )
+}
+
+const findMadeSync = (opts, parent, path = undefined) => {
+  if (path === parent)
+    return undefined
+
+  try {
+    return opts.statSync(parent).isDirectory() ? path : undefined
+  } catch (er) {
+    return er.code === 'ENOENT'
+      ? findMadeSync(opts, dirname(parent), parent)
+      : undefined
+  }
+}
+
+module.exports = {findMade, findMadeSync}
diff --git a/node_modules/tar/node_modules/mkdirp/lib/mkdirp-manual.js b/node_modules/tar/node_modules/mkdirp/lib/mkdirp-manual.js
new file mode 100644
index 000000000..2eb18cd64
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/lib/mkdirp-manual.js
@@ -0,0 +1,64 @@
+const {dirname} = require('path')
+
+const mkdirpManual = (path, opts, made) => {
+  opts.recursive = false
+  const parent = dirname(path)
+  if (parent === path) {
+    return opts.mkdirAsync(path, opts).catch(er => {
+      // swallowed by recursive implementation on posix systems
+      // any other error is a failure
+      if (er.code !== 'EISDIR')
+        throw er
+    })
+  }
+
+  return opts.mkdirAsync(path, opts).then(() => made || path, er => {
+    if (er.code === 'ENOENT')
+      return mkdirpManual(parent, opts)
+        .then(made => mkdirpManual(path, opts, made))
+    if (er.code !== 'EEXIST' && er.code !== 'EROFS')
+      throw er
+    return opts.statAsync(path).then(st => {
+      if (st.isDirectory())
+        return made
+      else
+        throw er
+    }, () => { throw er })
+  })
+}
+
+const mkdirpManualSync = (path, opts, made) => {
+  const parent = dirname(path)
+  opts.recursive = false
+
+  if (parent === path) {
+    try {
+      return opts.mkdirSync(path, opts)
+    } catch (er) {
+      // swallowed by recursive implementation on posix systems
+      // any other error is a failure
+      if (er.code !== 'EISDIR')
+        throw er
+      else
+        return
+    }
+  }
+
+  try {
+    opts.mkdirSync(path, opts)
+    return made || path
+  } catch (er) {
+    if (er.code === 'ENOENT')
+      return mkdirpManualSync(path, opts, mkdirpManualSync(parent, opts, made))
+    if (er.code !== 'EEXIST' && er.code !== 'EROFS')
+      throw er
+    try {
+      if (!opts.statSync(path).isDirectory())
+        throw er
+    } catch (_) {
+      throw er
+    }
+  }
+}
+
+module.exports = {mkdirpManual, mkdirpManualSync}
diff --git a/node_modules/tar/node_modules/mkdirp/lib/mkdirp-native.js b/node_modules/tar/node_modules/mkdirp/lib/mkdirp-native.js
new file mode 100644
index 000000000..c7a6b6980
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/lib/mkdirp-native.js
@@ -0,0 +1,39 @@
+const {dirname} = require('path')
+const {findMade, findMadeSync} = require('./find-made.js')
+const {mkdirpManual, mkdirpManualSync} = require('./mkdirp-manual.js')
+
+const mkdirpNative = (path, opts) => {
+  opts.recursive = true
+  const parent = dirname(path)
+  if (parent === path)
+    return opts.mkdirAsync(path, opts)
+
+  return findMade(opts, path).then(made =>
+    opts.mkdirAsync(path, opts).then(() => made)
+    .catch(er => {
+      if (er.code === 'ENOENT')
+        return mkdirpManual(path, opts)
+      else
+        throw er
+    }))
+}
+
+const mkdirpNativeSync = (path, opts) => {
+  opts.recursive = true
+  const parent = dirname(path)
+  if (parent === path)
+    return opts.mkdirSync(path, opts)
+
+  const made = findMadeSync(opts, path)
+  try {
+    opts.mkdirSync(path, opts)
+    return made
+  } catch (er) {
+    if (er.code === 'ENOENT')
+      return mkdirpManualSync(path, opts)
+    else
+      throw er
+  }
+}
+
+module.exports = {mkdirpNative, mkdirpNativeSync}
diff --git a/node_modules/tar/node_modules/mkdirp/lib/opts-arg.js b/node_modules/tar/node_modules/mkdirp/lib/opts-arg.js
new file mode 100644
index 000000000..488bd44c3
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/lib/opts-arg.js
@@ -0,0 +1,23 @@
+const { promisify } = require('util')
+const fs = require('fs')
+const optsArg = opts => {
+  if (!opts)
+    opts = { mode: 0o777 & (~process.umask()), fs }
+  else if (typeof opts === 'object')
+    opts = { mode: 0o777 & (~process.umask()), fs, ...opts }
+  else if (typeof opts === 'number')
+    opts = { mode: opts, fs }
+  else if (typeof opts === 'string')
+    opts = { mode: parseInt(opts, 8), fs }
+  else
+    throw new TypeError('invalid options argument')
+
+  opts.mkdir = opts.mkdir || opts.fs.mkdir || fs.mkdir
+  opts.mkdirAsync = promisify(opts.mkdir)
+  opts.stat = opts.stat || opts.fs.stat || fs.stat
+  opts.statAsync = promisify(opts.stat)
+  opts.statSync = opts.statSync || opts.fs.statSync || fs.statSync
+  opts.mkdirSync = opts.mkdirSync || opts.fs.mkdirSync || fs.mkdirSync
+  return opts
+}
+module.exports = optsArg
diff --git a/node_modules/tar/node_modules/mkdirp/lib/path-arg.js b/node_modules/tar/node_modules/mkdirp/lib/path-arg.js
new file mode 100644
index 000000000..cc07de5a6
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/lib/path-arg.js
@@ -0,0 +1,29 @@
+const platform = process.env.__TESTING_MKDIRP_PLATFORM__ || process.platform
+const { resolve, parse } = require('path')
+const pathArg = path => {
+  if (/\0/.test(path)) {
+    // simulate same failure that node raises
+    throw Object.assign(
+      new TypeError('path must be a string without null bytes'),
+      {
+        path,
+        code: 'ERR_INVALID_ARG_VALUE',
+      }
+    )
+  }
+
+  path = resolve(path)
+  if (platform === 'win32') {
+    const badWinChars = /[*|"<>?:]/
+    const {root} = parse(path)
+    if (badWinChars.test(path.substr(root.length))) {
+      throw Object.assign(new Error('Illegal characters in path.'), {
+        path,
+        code: 'EINVAL',
+      })
+    }
+  }
+
+  return path
+}
+module.exports = pathArg
diff --git a/node_modules/tar/node_modules/mkdirp/lib/use-native.js b/node_modules/tar/node_modules/mkdirp/lib/use-native.js
new file mode 100644
index 000000000..079361de1
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/lib/use-native.js
@@ -0,0 +1,10 @@
+const fs = require('fs')
+
+const version = process.env.__TESTING_MKDIRP_NODE_VERSION__ || process.version
+const versArr = version.replace(/^v/, '').split('.')
+const hasNative = +versArr[0] > 10 || +versArr[0] === 10 && +versArr[1] >= 12
+
+const useNative = !hasNative ? () => false : opts => opts.mkdir === fs.mkdir
+const useNativeSync = !hasNative ? () => false : opts => opts.mkdirSync === fs.mkdirSync
+
+module.exports = {useNative, useNativeSync}
diff --git a/node_modules/tar/node_modules/mkdirp/package.json b/node_modules/tar/node_modules/mkdirp/package.json
new file mode 100644
index 000000000..f6c5a817f
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/package.json
@@ -0,0 +1,75 @@
+{
+  "_from": "mkdirp@^1.0.3",
+  "_id": "mkdirp@1.0.3",
+  "_inBundle": false,
+  "_integrity": "sha512-6uCP4Qc0sWsgMLy1EOqqS/3rjDHOEnsStVr/4vtAIK2Y5i2kA7lFFejYrpIyiN9w0pYf4ckeCYT9f1r1P9KX5g==",
+  "_location": "/tar/mkdirp",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "mkdirp@^1.0.3",
+    "name": "mkdirp",
+    "escapedName": "mkdirp",
+    "rawSpec": "^1.0.3",
+    "saveSpec": null,
+    "fetchSpec": "^1.0.3"
+  },
+  "_requiredBy": [
+    "/tar"
+  ],
+  "_resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.3.tgz",
+  "_shasum": "4cf2e30ad45959dddea53ad97d518b6c8205e1ea",
+  "_spec": "mkdirp@^1.0.3",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/tar",
+  "bin": {
+    "mkdirp": "bin/cmd.js"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/node-mkdirp/issues"
+  },
+  "bundleDependencies": false,
+  "deprecated": false,
+  "description": "Recursively mkdir, like `mkdir -p`",
+  "devDependencies": {
+    "require-inject": "^1.4.4",
+    "tap": "^14.10.6"
+  },
+  "engines": {
+    "node": ">=10"
+  },
+  "files": [
+    "bin",
+    "lib",
+    "index.js"
+  ],
+  "homepage": "https://github.com/isaacs/node-mkdirp#readme",
+  "keywords": [
+    "mkdir",
+    "directory",
+    "make dir",
+    "make",
+    "dir",
+    "recursive",
+    "native"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "mkdirp",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/node-mkdirp.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --follow-tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "snap": "tap",
+    "test": "tap"
+  },
+  "tap": {
+    "check-coverage": true,
+    "coverage-map": "map.js"
+  },
+  "version": "1.0.3"
+}
diff --git a/node_modules/tar/node_modules/mkdirp/readme.markdown b/node_modules/tar/node_modules/mkdirp/readme.markdown
new file mode 100644
index 000000000..827de5905
--- /dev/null
+++ b/node_modules/tar/node_modules/mkdirp/readme.markdown
@@ -0,0 +1,266 @@
+# mkdirp
+
+Like `mkdir -p`, but in Node.js!
+
+Now with a modern API and no\* bugs!
+
+<small>\* may contain some bugs</small>
+
+# example
+
+## pow.js
+
+```js
+const mkdirp = require('mkdirp')
+
+// return value is a Promise resolving to the first directory created
+mkdirp('/tmp/foo/bar/baz').then(made =>
+  console.log(`made directories, starting with ${made}`))
+```
+
+Output (where `/tmp/foo` already exists)
+
+```
+made directories, starting with /tmp/foo/bar
+```
+
+Or, if you don't have time to wait around for promises:
+
+```js
+const mkdirp = require('mkdirp')
+
+// return value is the first directory created
+const made = mkdirp.sync('/tmp/foo/bar/baz')
+console.log(`made directories, starting with ${made}`)
+```
+
+And now /tmp/foo/bar/baz exists, huzzah!
+
+# methods
+
+```js
+const mkdirp = require('mkdirp')
+```
+
+## mkdirp(dir, [opts]) -> Promise<String | undefined>
+
+Create a new directory and any necessary subdirectories at `dir` with octal
+permission string `opts.mode`. If `opts` is a string or number, it will be
+treated as the `opts.mode`.
+
+If `opts.mode` isn't specified, it defaults to `0o777 &
+(~process.umask())`.
+
+Promise resolves to first directory `made` that had to be created, or
+`undefined` if everything already exists.  Promise rejects if any errors
+are encountered.  Note that, in the case of promise rejection, some
+directories _may_ have been created, as recursive directory creation is not
+an atomic operation.
+
+You can optionally pass in an alternate `fs` implementation by passing in
+`opts.fs`. Your implementation should have `opts.fs.mkdir(path, opts, cb)`
+and `opts.fs.stat(path, cb)`.
+
+You can also override just one or the other of `mkdir` and `stat` by
+passing in `opts.stat` or `opts.mkdir`, or providing an `fs` option that
+only overrides one of these.
+
+## mkdirp.sync(dir, opts) -> String|null
+
+Synchronously create a new directory and any necessary subdirectories at
+`dir` with octal permission string `opts.mode`. If `opts` is a string or
+number, it will be treated as the `opts.mode`.
+
+If `opts.mode` isn't specified, it defaults to `0o777 &
+(~process.umask())`.
+
+Returns the first directory that had to be created, or undefined if
+everything already exists.
+
+You can optionally pass in an alternate `fs` implementation by passing in
+`opts.fs`. Your implementation should have `opts.fs.mkdirSync(path, mode)`
+and `opts.fs.statSync(path)`.
+
+You can also override just one or the other of `mkdirSync` and `statSync`
+by passing in `opts.statSync` or `opts.mkdirSync`, or providing an `fs`
+option that only overrides one of these.
+
+## mkdirp.manual, mkdirp.manualSync
+
+Use the manual implementation (not the native one).  This is the default
+when the native implementation is not available or the stat/mkdir
+implementation is overridden.
+
+## mkdirp.native, mkdirp.nativeSync
+
+Use the native implementation (not the manual one).  This is the default
+when the native implementation is available and stat/mkdir are not
+overridden.
+
+# implementation
+
+On Node.js v10.12.0 and above, use the native `fs.mkdir(p,
+{recursive:true})` option, unless `fs.mkdir`/`fs.mkdirSync` has been
+overridden by an option.
+
+## native implementation
+
+- If the path is a root directory, then pass it to the underlying
+  implementation and return the result/error.  (In this case, it'll either
+  succeed or fail, but we aren't actually creating any dirs.)
+- Walk up the path statting each directory, to find the first path that
+  will be created, `made`.
+- Call `fs.mkdir(path, { recursive: true })` (or `fs.mkdirSync`)
+- If error, raise it to the caller.
+- Return `made`.
+
+## manual implementation
+
+- Call underlying `fs.mkdir` implementation, with `recursive: false`
+- If error:
+  - If path is a root directory, raise to the caller and do not handle it
+  - If ENOENT, mkdirp parent dir, store result as `made`
+  - stat(path)
+    - If error, raise original `mkdir` error
+    - If directory, return `made`
+    - Else, raise original `mkdir` error
+- else
+  - return `undefined` if a root dir, or `made` if set, or `path`
+
+## windows vs unix caveat
+
+On Windows file systems, attempts to create a root directory (ie, a drive
+letter or root UNC path) will fail.  If the root directory exists, then it
+will fail with `EPERM`.  If the root directory does not exist, then it will
+fail with `ENOENT`.
+
+On posix file systems, attempts to create a root directory (in recursive
+mode) will succeed silently, as it is treated like just another directory
+that already exists.  (In non-recursive mode, of course, it fails with
+`EEXIST`.)
+
+In order to preserve this system-specific behavior (and because it's not as
+if we can create the parent of a root directory anyway), attempts to create
+a root directory are passed directly to the `fs` implementation, and any
+errors encountered are not handled.
+
+## native error caveat
+
+The native implementation (as of at least Node.js v13.4.0) does not provide
+appropriate errors in some cases (see
+[nodejs/node#31481](https://github.com/nodejs/node/issues/31481) and
+[nodejs/node#28015](https://github.com/nodejs/node/issues/28015)).
+
+In order to work around this issue, the native implementation will fall
+back to the manual implementation if an `ENOENT` error is encountered.
+
+# choosing a recursive mkdir implementation
+
+There are a few to choose from!  Use the one that suits your needs best :D
+
+## use `fs.mkdir(path, {recursive: true}, cb)` if:
+
+- You wish to optimize performance even at the expense of other factors.
+- You don't need to know the first dir created.
+- You are ok with getting `ENOENT` as the error when some other problem is
+  the actual cause.
+- You can limit your platforms to Node.js v10.12 and above.
+- You're ok with using callbacks instead of promises.
+- You don't need/want a CLI.
+- You don't need to override the `fs` methods in use.
+
+## use this module (mkdirp 1.x) if:
+
+- You need to know the first directory that was created.
+- You wish to use the native implementation if available, but fall back
+  when it's not.
+- You prefer promise-returning APIs to callback-taking APIs.
+- You want more useful error messages than the native recursive mkdir
+  provides (at least as of Node.js v13.4), and are ok with re-trying on
+  `ENOENT` to achieve this.
+- You need (or at least, are ok with) a CLI.
+- You need to override the `fs` methods in use.
+
+## use [`make-dir`](http://npm.im/make-dir) if:
+
+- You do not need to know the first dir created (and wish to save a few
+  `stat` calls when using the native implementation for this reason).
+- You wish to use the native implementation if available, but fall back
+  when it's not.
+- You prefer promise-returning APIs to callback-taking APIs.
+- You are ok with occasionally getting `ENOENT` errors for failures that
+  are actually related to something other than a missing file system entry.
+- You don't need/want a CLI.
+- You need to override the `fs` methods in use.
+
+## use mkdirp 0.x if:
+
+- You need to know the first directory that was created.
+- You need (or at least, are ok with) a CLI.
+- You need to override the `fs` methods in use.
+- You're ok with using callbacks instead of promises.
+- You are not running on Windows, where the root-level ENOENT errors can
+  lead to infinite regress.
+- You think vinyl just sounds warmer and richer for some weird reason.
+- You are supporting truly ancient Node.js versions, before even the advent
+  of a `Promise` language primitive.  (Please don't.  You deserve better.)
+
+# cli
+
+This package also ships with a `mkdirp` command.
+
+```
+$ mkdirp -h
+
+usage: mkdirp [DIR1,DIR2..] {OPTIONS}
+
+  Create each supplied directory including any necessary parent directories
+  that don't yet exist.
+
+  If the directory already exists, do nothing.
+
+OPTIONS are:
+
+  -m<mode>       If a directory needs to be created, set the mode as an octal
+  --mode=<mode>  permission string.
+
+  -v --version   Print the mkdirp version number
+
+  -h --help      Print this helpful banner
+
+  -p --print     Print the first directories created for each path provided
+
+  --manual       Use manual implementation, even if native is available
+```
+
+# install
+
+With [npm](http://npmjs.org) do:
+
+```
+npm install mkdirp
+```
+
+to get the library locally, or
+
+```
+npm install -g mkdirp
+```
+
+to get the command everywhere, or
+
+```
+npx mkdirp ...
+```
+
+to run the command without installing it globally.
+
+# platform support
+
+This module works on node v8, but only v10 and above are officially
+supported, as Node v8 reached its LTS end of life 2020-01-01, which is in
+the past, as of this writing.
+
+# license
+
+MIT
diff --git a/node_modules/tar/node_modules/yallist/LICENSE b/node_modules/tar/node_modules/yallist/LICENSE
new file mode 100644
index 000000000..19129e315
--- /dev/null
+++ b/node_modules/tar/node_modules/yallist/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/tar/node_modules/yallist/README.md b/node_modules/tar/node_modules/yallist/README.md
new file mode 100644
index 000000000..f58610186
--- /dev/null
+++ b/node_modules/tar/node_modules/yallist/README.md
@@ -0,0 +1,204 @@
+# yallist
+
+Yet Another Linked List
+
+There are many doubly-linked list implementations like it, but this
+one is mine.
+
+For when an array would be too big, and a Map can't be iterated in
+reverse order.
+
+
+[![Build Status](https://travis-ci.org/isaacs/yallist.svg?branch=master)](https://travis-ci.org/isaacs/yallist) [![Coverage Status](https://coveralls.io/repos/isaacs/yallist/badge.svg?service=github)](https://coveralls.io/github/isaacs/yallist)
+
+## basic usage
+
+```javascript
+var yallist = require('yallist')
+var myList = yallist.create([1, 2, 3])
+myList.push('foo')
+myList.unshift('bar')
+// of course pop() and shift() are there, too
+console.log(myList.toArray()) // ['bar', 1, 2, 3, 'foo']
+myList.forEach(function (k) {
+  // walk the list head to tail
+})
+myList.forEachReverse(function (k, index, list) {
+  // walk the list tail to head
+})
+var myDoubledList = myList.map(function (k) {
+  return k + k
+})
+// now myDoubledList contains ['barbar', 2, 4, 6, 'foofoo']
+// mapReverse is also a thing
+var myDoubledListReverse = myList.mapReverse(function (k) {
+  return k + k
+}) // ['foofoo', 6, 4, 2, 'barbar']
+
+var reduced = myList.reduce(function (set, entry) {
+  set += entry
+  return set
+}, 'start')
+console.log(reduced) // 'startfoo123bar'
+```
+
+## api
+
+The whole API is considered "public".
+
+Functions with the same name as an Array method work more or less the
+same way.
+
+There's reverse versions of most things because that's the point.
+
+### Yallist
+
+Default export, the class that holds and manages a list.
+
+Call it with either a forEach-able (like an array) or a set of
+arguments, to initialize the list.
+
+The Array-ish methods all act like you'd expect.  No magic length,
+though, so if you change that it won't automatically prune or add
+empty spots.
+
+### Yallist.create(..)
+
+Alias for Yallist function.  Some people like factories.
+
+#### yallist.head
+
+The first node in the list
+
+#### yallist.tail
+
+The last node in the list
+
+#### yallist.length
+
+The number of nodes in the list.  (Change this at your peril.  It is
+not magic like Array length.)
+
+#### yallist.toArray()
+
+Convert the list to an array.
+
+#### yallist.forEach(fn, [thisp])
+
+Call a function on each item in the list.
+
+#### yallist.forEachReverse(fn, [thisp])
+
+Call a function on each item in the list, in reverse order.
+
+#### yallist.get(n)
+
+Get the data at position `n` in the list.  If you use this a lot,
+probably better off just using an Array.
+
+#### yallist.getReverse(n)
+
+Get the data at position `n`, counting from the tail.
+
+#### yallist.map(fn, thisp)
+
+Create a new Yallist with the result of calling the function on each
+item.
+
+#### yallist.mapReverse(fn, thisp)
+
+Same as `map`, but in reverse.
+
+#### yallist.pop()
+
+Get the data from the list tail, and remove the tail from the list.
+
+#### yallist.push(item, ...)
+
+Insert one or more items to the tail of the list.
+
+#### yallist.reduce(fn, initialValue)
+
+Like Array.reduce.
+
+#### yallist.reduceReverse
+
+Like Array.reduce, but in reverse.
+
+#### yallist.reverse
+
+Reverse the list in place.
+
+#### yallist.shift()
+
+Get the data from the list head, and remove the head from the list.
+
+#### yallist.slice([from], [to])
+
+Just like Array.slice, but returns a new Yallist.
+
+#### yallist.sliceReverse([from], [to])
+
+Just like yallist.slice, but the result is returned in reverse.
+
+#### yallist.toArray()
+
+Create an array representation of the list.
+
+#### yallist.toArrayReverse()
+
+Create a reversed array representation of the list.
+
+#### yallist.unshift(item, ...)
+
+Insert one or more items to the head of the list.
+
+#### yallist.unshiftNode(node)
+
+Move a Node object to the front of the list.  (That is, pull it out of
+wherever it lives, and make it the new head.)
+
+If the node belongs to a different list, then that list will remove it
+first.
+
+#### yallist.pushNode(node)
+
+Move a Node object to the end of the list.  (That is, pull it out of
+wherever it lives, and make it the new tail.)
+
+If the node belongs to a list already, then that list will remove it
+first.
+
+#### yallist.removeNode(node)
+
+Remove a node from the list, preserving referential integrity of head
+and tail and other nodes.
+
+Will throw an error if you try to have a list remove a node that
+doesn't belong to it.
+
+### Yallist.Node
+
+The class that holds the data and is actually the list.
+
+Call with `var n = new Node(value, previousNode, nextNode)`
+
+Note that if you do direct operations on Nodes themselves, it's very
+easy to get into weird states where the list is broken.  Be careful :)
+
+#### node.next
+
+The next node in the list.
+
+#### node.prev
+
+The previous node in the list.
+
+#### node.value
+
+The data the node contains.
+
+#### node.list
+
+The list to which this node belongs.  (Null if it does not belong to
+any list.)
diff --git a/node_modules/tar/node_modules/yallist/iterator.js b/node_modules/tar/node_modules/yallist/iterator.js
new file mode 100644
index 000000000..d41c97a19
--- /dev/null
+++ b/node_modules/tar/node_modules/yallist/iterator.js
@@ -0,0 +1,8 @@
+'use strict'
+module.exports = function (Yallist) {
+  Yallist.prototype[Symbol.iterator] = function* () {
+    for (let walker = this.head; walker; walker = walker.next) {
+      yield walker.value
+    }
+  }
+}
diff --git a/node_modules/tar/node_modules/yallist/package.json b/node_modules/tar/node_modules/yallist/package.json
new file mode 100644
index 000000000..83e3c6b56
--- /dev/null
+++ b/node_modules/tar/node_modules/yallist/package.json
@@ -0,0 +1,63 @@
+{
+  "_from": "yallist@^4.0.0",
+  "_id": "yallist@4.0.0",
+  "_inBundle": false,
+  "_integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+  "_location": "/tar/yallist",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "yallist@^4.0.0",
+    "name": "yallist",
+    "escapedName": "yallist",
+    "rawSpec": "^4.0.0",
+    "saveSpec": null,
+    "fetchSpec": "^4.0.0"
+  },
+  "_requiredBy": [
+    "/tar",
+    "/tar/minipass"
+  ],
+  "_resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+  "_shasum": "9bb92790d9c0effec63be73519e11a35019a3a72",
+  "_spec": "yallist@^4.0.0",
+  "_where": "/Users/claudiahdz/npm/cli/node_modules/tar",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/yallist/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Yet Another Linked List",
+  "devDependencies": {
+    "tap": "^12.1.0"
+  },
+  "directories": {
+    "test": "test"
+  },
+  "files": [
+    "yallist.js",
+    "iterator.js"
+  ],
+  "homepage": "https://github.com/isaacs/yallist#readme",
+  "license": "ISC",
+  "main": "yallist.js",
+  "name": "yallist",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/isaacs/yallist.git"
+  },
+  "scripts": {
+    "postpublish": "git push origin --all; git push origin --tags",
+    "postversion": "npm publish",
+    "preversion": "npm test",
+    "test": "tap test/*.js --100"
+  },
+  "version": "4.0.0"
+}
diff --git a/node_modules/tar/node_modules/yallist/yallist.js b/node_modules/tar/node_modules/yallist/yallist.js
new file mode 100644
index 000000000..4e83ab1c5
--- /dev/null
+++ b/node_modules/tar/node_modules/yallist/yallist.js
@@ -0,0 +1,426 @@
+'use strict'
+module.exports = Yallist
+
+Yallist.Node = Node
+Yallist.create = Yallist
+
+function Yallist (list) {
+  var self = this
+  if (!(self instanceof Yallist)) {
+    self = new Yallist()
+  }
+
+  self.tail = null
+  self.head = null
+  self.length = 0
+
+  if (list && typeof list.forEach === 'function') {
+    list.forEach(function (item) {
+      self.push(item)
+    })
+  } else if (arguments.length > 0) {
+    for (var i = 0, l = arguments.length; i < l; i++) {
+      self.push(arguments[i])
+    }
+  }
+
+  return self
+}
+
+Yallist.prototype.removeNode = function (node) {
+  if (node.list !== this) {
+    throw new Error('removing node which does not belong to this list')
+  }
+
+  var next = node.next
+  var prev = node.prev
+
+  if (next) {
+    next.prev = prev
+  }
+
+  if (prev) {
+    prev.next = next
+  }
+
+  if (node === this.head) {
+    this.head = next
+  }
+  if (node === this.tail) {
+    this.tail = prev
+  }
+
+  node.list.length--
+  node.next = null
+  node.prev = null
+  node.list = null
+
+  return next
+}
+
+Yallist.prototype.unshiftNode = function (node) {
+  if (node === this.head) {
+    return
+  }
+
+  if (node.list) {
+    node.list.removeNode(node)
+  }
+
+  var head = this.head
+  node.list = this
+  node.next = head
+  if (head) {
+    head.prev = node
+  }
+
+  this.head = node
+  if (!this.tail) {
+    this.tail = node
+  }
+  this.length++
+}
+
+Yallist.prototype.pushNode = function (node) {
+  if (node === this.tail) {
+    return
+  }
+
+  if (node.list) {
+    node.list.removeNode(node)
+  }
+
+  var tail = this.tail
+  node.list = this
+  node.prev = tail
+  if (tail) {
+    tail.next = node
+  }
+
+  this.tail = node
+  if (!this.head) {
+    this.head = node
+  }
+  this.length++
+}
+
+Yallist.prototype.push = function () {
+  for (var i = 0, l = arguments.length; i < l; i++) {
+    push(this, arguments[i])
+  }
+  return this.length
+}
+
+Yallist.prototype.unshift = function () {
+  for (var i = 0, l = arguments.length; i < l; i++) {
+    unshift(this, arguments[i])
+  }
+  return this.length
+}
+
+Yallist.prototype.pop = function () {
+  if (!this.tail) {
+    return undefined
+  }
+
+  var res = this.tail.value
+  this.tail = this.tail.prev
+  if (this.tail) {
+    this.tail.next = null
+  } else {
+    this.head = null
+  }
+  this.length--
+  return res
+}
+
+Yallist.prototype.shift = function () {
+  if (!this.head) {
+    return undefined
+  }
+
+  var res = this.head.value
+  this.head = this.head.next
+  if (this.head) {
+    this.head.prev = null
+  } else {
+    this.tail = null
+  }
+  this.length--
+  return res
+}
+
+Yallist.prototype.forEach = function (fn, thisp) {
+  thisp = thisp || this
+  for (var walker = this.head, i = 0; walker !== null; i++) {
+    fn.call(thisp, walker.value, i, this)
+    walker = walker.next
+  }
+}
+
+Yallist.prototype.forEachReverse = function (fn, thisp) {
+  thisp = thisp || this
+  for (var walker = this.tail, i = this.length - 1; walker !== null; i--) {
+    fn.call(thisp, walker.value, i, this)
+    walker = walker.prev
+  }
+}
+
+Yallist.prototype.get = function (n) {
+  for (var i = 0, walker = this.head; walker !== null && i < n; i++) {
+    // abort out of the list early if we hit a cycle
+    walker = walker.next
+  }
+  if (i === n && walker !== null) {
+    return walker.value
+  }
+}
+
+Yallist.prototype.getReverse = function (n) {
+  for (var i = 0, walker = this.tail; walker !== null && i < n; i++) {
+    // abort out of the list early if we hit a cycle
+    walker = walker.prev
+  }
+  if (i === n && walker !== null) {
+    return walker.value
+  }
+}
+
+Yallist.prototype.map = function (fn, thisp) {
+  thisp = thisp || this
+  var res = new Yallist()
+  for (var walker = this.head; walker !== null;) {
+    res.push(fn.call(thisp, walker.value, this))
+    walker = walker.next
+  }
+  return res
+}
+
+Yallist.prototype.mapReverse = function (fn, thisp) {
+  thisp = thisp || this
+  var res = new Yallist()
+  for (var walker = this.tail; walker !== null;) {
+    res.push(fn.call(thisp, walker.value, this))
+    walker = walker.prev
+  }
+  return res
+}
+
+Yallist.prototype.reduce = function (fn, initial) {
+  var acc
+  var walker = this.head
+  if (arguments.length > 1) {
+    acc = initial
+  } else if (this.head) {
+    walker = this.head.next
+    acc = this.head.value
+  } else {
+    throw new TypeError('Reduce of empty list with no initial value')
+  }
+
+  for (var i = 0; walker !== null; i++) {
+    acc = fn(acc, walker.value, i)
+    walker = walker.next
+  }
+
+  return acc
+}
+
+Yallist.prototype.reduceReverse = function (fn, initial) {
+  var acc
+  var walker = this.tail
+  if (arguments.length > 1) {
+    acc = initial
+  } else if (this.tail) {
+    walker = this.tail.prev
+    acc = this.tail.value
+  } else {
+    throw new TypeError('Reduce of empty list with no initial value')
+  }
+
+  for (var i = this.length - 1; walker !== null; i--) {
+    acc = fn(acc, walker.value, i)
+    walker = walker.prev
+  }
+
+  return acc
+}
+
+Yallist.prototype.toArray = function () {
+  var arr = new Array(this.length)
+  for (var i = 0, walker = this.head; walker !== null; i++) {
+    arr[i] = walker.value
+    walker = walker.next
+  }
+  return arr
+}
+
+Yallist.prototype.toArrayReverse = function () {
+  var arr = new Array(this.length)
+  for (var i = 0, walker = this.tail; walker !== null; i++) {
+    arr[i] = walker.value
+    walker = walker.prev
+  }
+  return arr
+}
+
+Yallist.prototype.slice = function (from, to) {
+  to = to || this.length
+  if (to < 0) {
+    to += this.length
+  }
+  from = from || 0
+  if (from < 0) {
+    from += this.length
+  }
+  var ret = new Yallist()
+  if (to < from || to < 0) {
+    return ret
+  }
+  if (from < 0) {
+    from = 0
+  }
+  if (to > this.length) {
+    to = this.length
+  }
+  for (var i = 0, walker = this.head; walker !== null && i < from; i++) {
+    walker = walker.next
+  }
+  for (; walker !== null && i < to; i++, walker = walker.next) {
+    ret.push(walker.value)
+  }
+  return ret
+}
+
+Yallist.prototype.sliceReverse = function (from, to) {
+  to = to || this.length
+  if (to < 0) {
+    to += this.length
+  }
+  from = from || 0
+  if (from < 0) {
+    from += this.length
+  }
+  var ret = new Yallist()
+  if (to < from || to < 0) {
+    return ret
+  }
+  if (from < 0) {
+    from = 0
+  }
+  if (to > this.length) {
+    to = this.length
+  }
+  for (var i = this.length, walker = this.tail; walker !== null && i > to; i--) {
+    walker = walker.prev
+  }
+  for (; walker !== null && i > from; i--, walker = walker.prev) {
+    ret.push(walker.value)
+  }
+  return ret
+}
+
+Yallist.prototype.splice = function (start, deleteCount, ...nodes) {
+  if (start > this.length) {
+    start = this.length - 1
+  }
+  if (start < 0) {
+    start = this.length + start;
+  }
+
+  for (var i = 0, walker = this.head; walker !== null && i < start; i++) {
+    walker = walker.next
+  }
+
+  var ret = []
+  for (var i = 0; walker && i < deleteCount; i++) {
+    ret.push(walker.value)
+    walker = this.removeNode(walker)
+  }
+  if (walker === null) {
+    walker = this.tail
+  }
+
+  if (walker !== this.head && walker !== this.tail) {
+    walker = walker.prev
+  }
+
+  for (var i = 0; i < nodes.length; i++) {
+    walker = insert(this, walker, nodes[i])
+  }
+  return ret;
+}
+
+Yallist.prototype.reverse = function () {
+  var head = this.head
+  var tail = this.tail
+  for (var walker = head; walker !== null; walker = walker.prev) {
+    var p = walker.prev
+    walker.prev = walker.next
+    walker.next = p
+  }
+  this.head = tail
+  this.tail = head
+  return this
+}
+
+function insert (self, node, value) {
+  var inserted = node === self.head ?
+    new Node(value, null, node, self) :
+    new Node(value, node, node.next, self)
+
+  if (inserted.next === null) {
+    self.tail = inserted
+  }
+  if (inserted.prev === null) {
+    self.head = inserted
+  }
+
+  self.length++
+
+  return inserted
+}
+
+function push (self, item) {
+  self.tail = new Node(item, self.tail, null, self)
+  if (!self.head) {
+    self.head = self.tail
+  }
+  self.length++
+}
+
+function unshift (self, item) {
+  self.head = new Node(item, null, self.head, self)
+  if (!self.tail) {
+    self.tail = self.head
+  }
+  self.length++
+}
+
+function Node (value, prev, next, list) {
+  if (!(this instanceof Node)) {
+    return new Node(value, prev, next, list)
+  }
+
+  this.list = list
+  this.value = value
+
+  if (prev) {
+    prev.next = this
+    this.prev = prev
+  } else {
+    this.prev = null
+  }
+
+  if (next) {
+    next.prev = this
+    this.next = next
+  } else {
+    this.next = null
+  }
+}
+
+try {
+  // add if support for Symbol.iterator is present
+  require('./iterator.js')(Yallist)
+} catch (er) {}
diff --git a/node_modules/tar/package.json b/node_modules/tar/package.json
index b12db0f3e..347a0799a 100644
--- a/node_modules/tar/package.json
+++ b/node_modules/tar/package.json
@@ -1,33 +1,28 @@
 {
-  "_from": "tar@4.4.13",
-  "_id": "tar@4.4.13",
+  "_from": "tar@6.0.1",
+  "_id": "tar@6.0.1",
   "_inBundle": false,
-  "_integrity": "sha512-w2VwSrBoHa5BsSyH+KxEqeQBAllHhccyMFVHtGtdMpF4W7IRWfZjFiQceJPChOeTsSDVUpER2T8FA93pr0L+QA==",
+  "_integrity": "sha512-bKhKrrz2FJJj5s7wynxy/fyxpE0CmCjmOQ1KV4KkgXFWOgoIT/NbTMnB1n+LFNrNk0SSBVGGxcK5AGsyC+pW5Q==",
   "_location": "/tar",
-  "_phantomChildren": {
-    "safe-buffer": "5.1.2",
-    "yallist": "3.0.3"
-  },
+  "_phantomChildren": {},
   "_requested": {
     "type": "version",
     "registry": true,
-    "raw": "tar@4.4.13",
+    "raw": "tar@6.0.1",
     "name": "tar",
     "escapedName": "tar",
-    "rawSpec": "4.4.13",
+    "rawSpec": "6.0.1",
     "saveSpec": null,
-    "fetchSpec": "4.4.13"
+    "fetchSpec": "6.0.1"
   },
   "_requiredBy": [
     "#USER",
-    "/",
-    "/node-gyp",
-    "/pacote"
+    "/"
   ],
-  "_resolved": "https://registry.npmjs.org/tar/-/tar-4.4.13.tgz",
-  "_shasum": "43b364bc52888d555298637b10d60790254ab525",
-  "_spec": "tar@4.4.13",
-  "_where": "/Users/mperrotte/npminc/cli",
+  "_resolved": "https://registry.npmjs.org/tar/-/tar-6.0.1.tgz",
+  "_shasum": "7b3bd6c313cb6e0153770108f8d70ac298607efa",
+  "_spec": "tar@6.0.1",
+  "_where": "/Users/claudiahdz/npm/cli",
   "author": {
     "name": "Isaac Z. Schlueter",
     "email": "i@izs.me",
@@ -38,32 +33,31 @@
   },
   "bundleDependencies": false,
   "dependencies": {
-    "chownr": "^1.1.1",
-    "fs-minipass": "^1.2.5",
-    "minipass": "^2.8.6",
-    "minizlib": "^1.2.1",
-    "mkdirp": "^0.5.0",
-    "safe-buffer": "^5.1.2",
-    "yallist": "^3.0.3"
+    "chownr": "^1.1.3",
+    "fs-minipass": "^2.0.0",
+    "minipass": "^3.0.0",
+    "minizlib": "^2.1.0",
+    "mkdirp": "^1.0.3",
+    "yallist": "^4.0.0"
   },
   "deprecated": false,
   "description": "tar for node",
   "devDependencies": {
     "chmodr": "^1.2.0",
-    "end-of-stream": "^1.4.1",
+    "end-of-stream": "^1.4.3",
     "events-to-array": "^1.1.2",
     "mutate-fs": "^2.1.1",
-    "rimraf": "^2.6.3",
-    "tap": "^14.6.5",
+    "rimraf": "^2.7.1",
+    "tap": "^14.9.2",
     "tar-fs": "^1.16.3",
     "tar-stream": "^1.6.2"
   },
   "engines": {
-    "node": ">=4.5"
+    "node": ">= 10"
   },
   "files": [
     "index.js",
-    "lib/"
+    "lib/*.js"
   ],
   "homepage": "https://github.com/npm/node-tar#readme",
   "license": "ISC",
@@ -84,5 +78,5 @@
     "coverage-map": "map.js",
     "check-coverage": true
   },
-  "version": "4.4.13"
+  "version": "6.0.1"
 }