diff --git a/node_modules/object-assign/index.js b/node_modules/object-assign/index.js
deleted file mode 100644
index 0930cf8890b9a..0000000000000
--- a/node_modules/object-assign/index.js
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
-object-assign
-(c) Sindre Sorhus
-@license MIT
-*/
-
-'use strict';
-/* eslint-disable no-unused-vars */
-var getOwnPropertySymbols = Object.getOwnPropertySymbols;
-var hasOwnProperty = Object.prototype.hasOwnProperty;
-var propIsEnumerable = Object.prototype.propertyIsEnumerable;
-
-function toObject(val) {
-	if (val === null || val === undefined) {
-		throw new TypeError('Object.assign cannot be called with null or undefined');
-	}
-
-	return Object(val);
-}
-
-function shouldUseNative() {
-	try {
-		if (!Object.assign) {
-			return false;
-		}
-
-		// Detect buggy property enumeration order in older V8 versions.
-
-		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
-		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
-		test1[5] = 'de';
-		if (Object.getOwnPropertyNames(test1)[0] === '5') {
-			return false;
-		}
-
-		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
-		var test2 = {};
-		for (var i = 0; i < 10; i++) {
-			test2['_' + String.fromCharCode(i)] = i;
-		}
-		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
-			return test2[n];
-		});
-		if (order2.join('') !== '0123456789') {
-			return false;
-		}
-
-		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
-		var test3 = {};
-		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
-			test3[letter] = letter;
-		});
-		if (Object.keys(Object.assign({}, test3)).join('') !==
-				'abcdefghijklmnopqrst') {
-			return false;
-		}
-
-		return true;
-	} catch (err) {
-		// We don't expect any of the above to throw, but better to be safe.
-		return false;
-	}
-}
-
-module.exports = shouldUseNative() ? Object.assign : function (target, source) {
-	var from;
-	var to = toObject(target);
-	var symbols;
-
-	for (var s = 1; s < arguments.length; s++) {
-		from = Object(arguments[s]);
-
-		for (var key in from) {
-			if (hasOwnProperty.call(from, key)) {
-				to[key] = from[key];
-			}
-		}
-
-		if (getOwnPropertySymbols) {
-			symbols = getOwnPropertySymbols(from);
-			for (var i = 0; i < symbols.length; i++) {
-				if (propIsEnumerable.call(from, symbols[i])) {
-					to[symbols[i]] = from[symbols[i]];
-				}
-			}
-		}
-	}
-
-	return to;
-};
diff --git a/node_modules/object-assign/license b/node_modules/object-assign/license
deleted file mode 100644
index 654d0bfe94343..0000000000000
--- a/node_modules/object-assign/license
+++ /dev/null
@@ -1,21 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
-
-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/object-assign/package.json b/node_modules/object-assign/package.json
deleted file mode 100644
index 503eb1e6d0f5a..0000000000000
--- a/node_modules/object-assign/package.json
+++ /dev/null
@@ -1,42 +0,0 @@
-{
-  "name": "object-assign",
-  "version": "4.1.1",
-  "description": "ES2015 `Object.assign()` ponyfill",
-  "license": "MIT",
-  "repository": "sindresorhus/object-assign",
-  "author": {
-    "name": "Sindre Sorhus",
-    "email": "sindresorhus@gmail.com",
-    "url": "sindresorhus.com"
-  },
-  "engines": {
-    "node": ">=0.10.0"
-  },
-  "scripts": {
-    "test": "xo && ava",
-    "bench": "matcha bench.js"
-  },
-  "files": [
-    "index.js"
-  ],
-  "keywords": [
-    "object",
-    "assign",
-    "extend",
-    "properties",
-    "es2015",
-    "ecmascript",
-    "harmony",
-    "ponyfill",
-    "prollyfill",
-    "polyfill",
-    "shim",
-    "browser"
-  ],
-  "devDependencies": {
-    "ava": "^0.16.0",
-    "lodash": "^4.16.4",
-    "matcha": "^0.7.0",
-    "xo": "^0.16.0"
-  }
-}
diff --git a/node_modules/object-assign/readme.md b/node_modules/object-assign/readme.md
deleted file mode 100644
index 1be09d35c776c..0000000000000
--- a/node_modules/object-assign/readme.md
+++ /dev/null
@@ -1,61 +0,0 @@
-# object-assign [![Build Status](https://travis-ci.org/sindresorhus/object-assign.svg?branch=master)](https://travis-ci.org/sindresorhus/object-assign)
-
-> ES2015 [`Object.assign()`](http://www.2ality.com/2014/01/object-assign.html) [ponyfill](https://ponyfill.com)
-
-
-## Use the built-in
-
-Node.js 4 and up, as well as every evergreen browser (Chrome, Edge, Firefox, Opera, Safari),
-support `Object.assign()` :tada:. If you target only those environments, then by all
-means, use `Object.assign()` instead of this package.
-
-
-## Install
-
-```
-$ npm install --save object-assign
-```
-
-
-## Usage
-
-```js
-const objectAssign = require('object-assign');
-
-objectAssign({foo: 0}, {bar: 1});
-//=> {foo: 0, bar: 1}
-
-// multiple sources
-objectAssign({foo: 0}, {bar: 1}, {baz: 2});
-//=> {foo: 0, bar: 1, baz: 2}
-
-// overwrites equal keys
-objectAssign({foo: 0}, {foo: 1}, {foo: 2});
-//=> {foo: 2}
-
-// ignores null and undefined sources
-objectAssign({foo: 0}, null, {bar: 1}, undefined);
-//=> {foo: 0, bar: 1}
-```
-
-
-## API
-
-### objectAssign(target, [source, ...])
-
-Assigns enumerable own properties of `source` objects to the `target` object and returns the `target` object. Additional `source` objects will overwrite previous ones.
-
-
-## Resources
-
-- [ES2015 spec - Object.assign](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign)
-
-
-## Related
-
-- [deep-assign](https://github.com/sindresorhus/deep-assign) - Recursive `Object.assign()`
-
-
-## License
-
-MIT © [Sindre Sorhus](https://sindresorhus.com)