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diff --git a/node_modules/simple-concat/.travis.yml b/node_modules/simple-concat/.travis.yml
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+language: node_js
+node_js:
+  - lts/*
diff --git a/node_modules/simple-concat/LICENSE b/node_modules/simple-concat/LICENSE
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+The MIT License (MIT)
+
+Copyright (c) Feross Aboukhadijeh
+
+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/simple-concat/README.md b/node_modules/simple-concat/README.md
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+# simple-concat [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url]
+
+[travis-image]: https://img.shields.io/travis/feross/simple-concat/master.svg
+[travis-url]: https://travis-ci.org/feross/simple-concat
+[npm-image]: https://img.shields.io/npm/v/simple-concat.svg
+[npm-url]: https://npmjs.org/package/simple-concat
+[downloads-image]: https://img.shields.io/npm/dm/simple-concat.svg
+[downloads-url]: https://npmjs.org/package/simple-concat
+[standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg
+[standard-url]: https://standardjs.com
+
+### Super-minimalist version of [`concat-stream`](https://github.com/maxogden/concat-stream). Less than 15 lines!
+
+## install
+
+```
+npm install simple-concat
+```
+
+## usage
+
+This example is longer than the implementation.
+
+```js
+var s = new stream.PassThrough()
+concat(s, function (err, buf) {
+  if (err) throw err
+  console.error(buf)
+})
+s.write('abc')
+setTimeout(function () {
+  s.write('123')
+}, 10)
+setTimeout(function () {
+  s.write('456')
+}, 20)
+setTimeout(function () {
+  s.end('789')
+}, 30)
+```
+
+## license
+
+MIT. Copyright (c) [Feross Aboukhadijeh](http://feross.org).
diff --git a/node_modules/simple-concat/index.js b/node_modules/simple-concat/index.js
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+/*! simple-concat. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */
+module.exports = function (stream, cb) {
+  var chunks = []
+  stream.on('data', function (chunk) {
+    chunks.push(chunk)
+  })
+  stream.once('end', function () {
+    if (cb) cb(null, Buffer.concat(chunks))
+    cb = null
+  })
+  stream.once('error', function (err) {
+    if (cb) cb(err)
+    cb = null
+  })
+}
diff --git a/node_modules/simple-concat/package.json b/node_modules/simple-concat/package.json
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+{
+  "name": "simple-concat",
+  "description": "Super-minimalist version of `concat-stream`. Less than 15 lines!",
+  "version": "1.0.1",
+  "author": {
+    "name": "Feross Aboukhadijeh",
+    "email": "feross@feross.org",
+    "url": "https://feross.org"
+  },
+  "bugs": {
+    "url": "https://github.com/feross/simple-concat/issues"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "standard": "*",
+    "tape": "^5.0.1"
+  },
+  "homepage": "https://github.com/feross/simple-concat",
+  "keywords": [
+    "concat",
+    "concat-stream",
+    "concat stream"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/feross/simple-concat.git"
+  },
+  "scripts": {
+    "test": "standard && tape test/*.js"
+  },
+  "funding": [
+    {
+      "type": "github",
+      "url": "https://github.com/sponsors/feross"
+    },
+    {
+      "type": "patreon",
+      "url": "https://www.patreon.com/feross"
+    },
+    {
+      "type": "consulting",
+      "url": "https://feross.org/support"
+    }
+  ]
+}
diff --git a/node_modules/simple-concat/test/basic.js b/node_modules/simple-concat/test/basic.js
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+var concat = require('../')
+var stream = require('stream')
+var test = require('tape')
+
+test('basic', function (t) {
+  t.plan(2)
+  var s = new stream.PassThrough()
+  concat(s, function (err, buf) {
+    t.error(err)
+    t.deepEqual(buf, Buffer.from('abc123456789'))
+  })
+  s.write('abc')
+  setTimeout(function () {
+    s.write('123')
+  }, 10)
+  setTimeout(function () {
+    s.write('456')
+  }, 20)
+  setTimeout(function () {
+    s.end('789')
+  }, 30)
+})
+
+test('error', function (t) {
+  t.plan(2)
+  var s = new stream.PassThrough()
+  concat(s, function (err, buf) {
+    t.ok(err, 'got expected error')
+    t.ok(!buf)
+  })
+  s.write('abc')
+  setTimeout(function () {
+    s.write('123')
+  }, 10)
+  setTimeout(function () {
+    s.write('456')
+  }, 20)
+  setTimeout(function () {
+    s.emit('error', new Error('error'))
+  }, 30)
+})