Upgrade Webpacker to version 2.0 (#3729)

17 files changed, 241 insertions, 128 deletions

diff --git a/.gitignore b/.gitignore
index 31743fccf..38ebc934f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,7 @@ coverage
 public/system
 public/assets
 public/packs
+public/packs-test
 .env
 .env.production
 node_modules/
diff --git a/.travis.yml b/.travis.yml
index a855aa31c..8bef9c4ae 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ cache:
   directories:
   - node_modules
   - public/assets
-  - public/packs
+  - public/packs-test
 dist: trusty
 sudo: false
 
diff --git a/Gemfile b/Gemfile
index b014ba03c..77fffe7a6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -59,7 +59,7 @@ gem 'sprockets-rails', '~> 3.2', require: 'sprockets/railtie'
 gem 'statsd-instrument', '~> 2.1'
 gem 'twitter-text', '~> 1.14'
 gem 'tzinfo-data', '~> 1.2017'
-gem 'webpacker', '~> 1.2'
+gem 'webpacker', '~> 2.0'
 
 group :development, :test do
   gem 'fabrication', '~> 2.16'
diff --git a/Gemfile.lock b/Gemfile.lock
index ef7e40376..00ce84556 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -461,7 +461,7 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
-    webpacker (1.2)
+    webpacker (2.0)
       activesupport (>= 4.2)
       multi_json (~> 1.2)
       railties (>= 4.2)
@@ -558,7 +558,7 @@ DEPENDENCIES
   tzinfo-data (~> 1.2017)
   uglifier (~> 3.2)
   webmock (~> 3.0)
-  webpacker (~> 1.2)
+  webpacker (~> 2.0)
 
 RUBY VERSION
    ruby 2.4.1p111
diff --git a/bin/webpack b/bin/webpack
index a871ce77b..867550eb8 100755
--- a/bin/webpack
+++ b/bin/webpack
@@ -5,29 +5,24 @@ require "shellwords"
 require "yaml"
 
 ENV["RAILS_ENV"] ||= "development"
-RAILS_ENV   = ENV["RAILS_ENV"]
+RAILS_ENV = ENV["RAILS_ENV"]
 
 ENV["NODE_ENV"] ||= RAILS_ENV
-NODE_ENV    = ENV["NODE_ENV"]
+NODE_ENV = ENV["NODE_ENV"]
 
-APP_PATH               = File.expand_path("../", __dir__)
-CONFIG_PATH            = File.join(APP_PATH, "config/webpack/paths.yml")
+APP_PATH          = File.expand_path("../", __dir__)
+NODE_MODULES_PATH = File.join(APP_PATH, "node_modules")
+WEBPACK_CONFIG    = File.join(APP_PATH, "config/webpack/#{NODE_ENV}.js")
 
-begin
-  paths            = YAML.load(File.read(CONFIG_PATH))[NODE_ENV]
-
-  NODE_MODULES_PATH   = File.join(APP_PATH.shellescape, paths["node_modules"])
-  WEBPACK_CONFIG_PATH = File.join(APP_PATH.shellescape, paths["config"])
-rescue Errno::ENOENT, NoMethodError
-  puts "Configuration not found in config/webpack/paths.yml"
+unless File.exist?(WEBPACK_CONFIG)
+  puts "Webpack configuration not found."
   puts "Please run bundle exec rails webpacker:install to install webpacker"
   exit!
 end
 
-WEBPACK_BIN    = "#{NODE_MODULES_PATH}/.bin/webpack"
-WEBPACK_CONFIG = "#{WEBPACK_CONFIG_PATH}/#{NODE_ENV}.js"
+newenv  = { "NODE_PATH" => NODE_MODULES_PATH.shellescape }
+cmdline = ["yarn", "run", "webpack", "--", "--config", WEBPACK_CONFIG] + ARGV
 
 Dir.chdir(APP_PATH) do
-  exec "NODE_PATH=#{NODE_MODULES_PATH} #{WEBPACK_BIN} --config #{WEBPACK_CONFIG}" \
-    " #{ARGV.join(" ")}"
+  exec newenv, *cmdline
 end
diff --git a/bin/webpack-dev-server b/bin/webpack-dev-server
index c2a61ff5e..a867f2c01 100755
--- a/bin/webpack-dev-server
+++ b/bin/webpack-dev-server
@@ -10,24 +10,34 @@ RAILS_ENV = ENV["RAILS_ENV"]
 ENV["NODE_ENV"] ||= RAILS_ENV
 NODE_ENV = ENV["NODE_ENV"]
 
-APP_PATH    = File.expand_path("../", __dir__)
-CONFIG_PATH = File.join(APP_PATH, "config/webpack/paths.yml")
+APP_PATH          = File.expand_path("../", __dir__)
+CONFIG_FILE       = File.join(APP_PATH, "config/webpacker.yml")
+NODE_MODULES_PATH = File.join(APP_PATH, "node_modules")
+WEBPACK_CONFIG    = File.join(APP_PATH, "config/webpack/development.js")
+
+def args(key)
+  index = ARGV.index(key)
+  index ? ARGV[index + 1] : nil
+end
 
 begin
-  paths = YAML.load(File.read(CONFIG_PATH))[NODE_ENV]
+  dev_server = YAML.load_file(CONFIG_FILE)["development"]["dev_server"]
 
-  NODE_MODULES_PATH   = File.join(APP_PATH.shellescape, paths["node_modules"])
-  WEBPACK_CONFIG_PATH = File.join(APP_PATH.shellescape, paths["config"])
+  DEV_SERVER_HOST = "http#{"s" if args('--https') || dev_server["https"]}://#{args('--host') || dev_server["host"]}:#{args('--port') || dev_server["port"]}"
 
-  WEBPACK_BIN       = "#{NODE_MODULES_PATH}/.bin/webpack-dev-server"
-  DEV_SERVER_CONFIG = "#{WEBPACK_CONFIG_PATH}/development.server.js"
 rescue Errno::ENOENT, NoMethodError
-  puts "Configuration not found in config/webpacker/paths.yml."
+  puts "Webpack dev_server configuration not found in #{CONFIG_FILE}."
   puts "Please run bundle exec rails webpacker:install to install webpacker"
   exit!
 end
 
+newenv = {
+  "NODE_PATH" => NODE_MODULES_PATH.shellescape,
+  "ASSET_HOST" => DEV_SERVER_HOST.shellescape
+}.freeze
+
+cmdline = ["yarn", "run", "webpack-dev-server", "--", "--progress", "--color", "--config", WEBPACK_CONFIG] + ARGV
+
 Dir.chdir(APP_PATH) do
-  exec "NODE_PATH=#{NODE_MODULES_PATH} #{WEBPACK_BIN} --progress --color " \
-    "--config #{DEV_SERVER_CONFIG} #{ARGV.join(" ")}"
+  exec newenv, *cmdline
 end
diff --git a/bin/yarn b/bin/yarn
deleted file mode 100755
index c2bacef83..000000000
--- a/bin/yarn
+++ /dev/null
@@ -1,11 +0,0 @@
-#!/usr/bin/env ruby
-VENDOR_PATH = File.expand_path('..', __dir__)
-Dir.chdir(VENDOR_PATH) do
-  begin
-    exec "yarnpkg #{ARGV.join(" ")}"
-  rescue Errno::ENOENT
-    $stderr.puts "Yarn executable was not detected in the system."
-    $stderr.puts "Download Yarn at https://yarnpkg.com/en/docs/install"
-    exit 1
-  end
-end
diff --git a/config/webpack/configuration.js b/config/webpack/configuration.js
index 2a54080cf..6ef484c3a 100644
--- a/config/webpack/configuration.js
+++ b/config/webpack/configuration.js
@@ -1,26 +1,35 @@
-// Common configuration for webpacker loaded from config/webpack/paths.yml
+// Common configuration for webpacker loaded from config/webpacker.yml
 
 const { join, resolve } = require('path');
 const { env } = require('process');
 const { safeLoad } = require('js-yaml');
 const { readFileSync } = require('fs');
 
-const configPath = resolve('config', 'webpack');
+const configPath = resolve('config', 'webpacker.yml');
 const loadersDir = join(__dirname, 'loaders');
-const paths = safeLoad(readFileSync(join(configPath, 'paths.yml'), 'utf8'))[env.NODE_ENV || 'development'];
-const devServer = safeLoad(readFileSync(join(configPath, 'development.server.yml'), 'utf8'))[env.NODE_ENV || 'development'];
+const settings = safeLoad(readFileSync(configPath), 'utf8')[env.NODE_ENV];
 
-// Compute public path based on environment and CDN_HOST in production
-const ifHasCDN = env.CDN_HOST !== undefined && env.NODE_ENV === 'production';
-const devServerUrl = `http://${env.LOCAL_DOMAIN || devServer.host}:${devServer.port}/${paths.entry}/`;
-const publicUrl = ifHasCDN ? `${env.CDN_HOST}/${paths.entry}/` : `/${paths.entry}/`;
-const publicPath = env.NODE_ENV !== 'production' ? devServerUrl : publicUrl;
+function removeOuterSlashes(string) {
+  return string.replace(/^\/*/, '').replace(/\/*$/, '');
+}
+
+function formatPublicPath(host = '', path = '') {
+  let formattedHost = removeOuterSlashes(host);
+  if (formattedHost && !/^http/i.test(formattedHost)) {
+    formattedHost = `//${formattedHost}`;
+  }
+  const formattedPath = removeOuterSlashes(path);
+  return `${formattedHost}/${formattedPath}/`;
+}
+
+const output = {
+  path: resolve('public', settings.public_output_path),
+  publicPath: formatPublicPath(env.ASSET_HOST, settings.public_output_path),
+};
 
 module.exports = {
-  devServer,
+  settings,
   env,
-  paths,
   loadersDir,
-  publicUrl,
-  publicPath,
+  output,
 };
diff --git a/config/webpack/development.js b/config/webpack/development.js
index f6235f42e..7fce7e3f9 100644
--- a/config/webpack/development.js
+++ b/config/webpack/development.js
@@ -2,6 +2,7 @@
 
 const merge = require('webpack-merge');
 const sharedConfig = require('./shared.js');
+const { settings, output } = require('./configuration.js');
 
 module.exports = merge(sharedConfig, {
   devtool: 'cheap-module-eval-source-map',
@@ -13,4 +14,19 @@ module.exports = merge(sharedConfig, {
   output: {
     pathinfo: true,
   },
+
+  devServer: {
+    clientLogLevel: 'none',
+    https: settings.dev_server.https,
+    host: settings.dev_server.host,
+    port: settings.dev_server.port,
+    contentBase: output.path,
+    publicPath: output.publicPath,
+    compress: true,
+    headers: { 'Access-Control-Allow-Origin': '*' },
+    historyApiFallback: true,
+    watchOptions: {
+      ignored: /node_modules/,
+    },
+  },
 });
diff --git a/config/webpack/development.server.js b/config/webpack/development.server.js
deleted file mode 100644
index 8e8a399e8..000000000
--- a/config/webpack/development.server.js
+++ /dev/null
@@ -1,20 +0,0 @@
-// Note: You must restart bin/webpack-dev-server for changes to take effect
-
-const { resolve } = require('path');
-const { env } = require('process');
-const merge = require('webpack-merge');
-const devConfig = require('./development.js');
-const { devServer, publicPath, paths } = require('./configuration.js');
-
-module.exports = merge(devConfig, {
-  devServer: {
-    host: env.LOCAL_DOMAIN ? '0.0.0.0' : devServer.host,
-    port: devServer.port,
-    headers: { 'Access-Control-Allow-Origin': '*' },
-    compress: true,
-    historyApiFallback: true,
-    contentBase: resolve(paths.output, paths.entry),
-    publicPath,
-    disableHostCheck: true,
-  },
-});
diff --git a/config/webpack/development.server.yml b/config/webpack/development.server.yml
deleted file mode 100644
index ee588a888..000000000
--- a/config/webpack/development.server.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-# Note: You must restart bin/webpack-dev-server for changes to take effect
-
-default: &default
-  enabled: true
-  host: localhost
-  port: 8080
-
-development:
-  <<: *default
-
-test:
-  <<: *default
-  enabled: false
-
-production:
-  <<: *default
-  enabled: false
diff --git a/config/webpack/loaders/sass.js b/config/webpack/loaders/sass.js
index 24abf1685..88d94c684 100644
--- a/config/webpack/loaders/sass.js
+++ b/config/webpack/loaders/sass.js
@@ -7,7 +7,8 @@ module.exports = {
     fallback: 'style-loader',
     use: [
       { loader: 'css-loader', options: { minimize: env.NODE_ENV === 'production' } },
-      'postcss-loader',
+      { loader: 'postcss-loader', options: { sourceMap: true } },
+      'resolve-url-loader',
       'sass-loader',
     ],
   }),
diff --git a/config/webpack/production.js b/config/webpack/production.js
index 755464061..303fca81b 100644
--- a/config/webpack/production.js
+++ b/config/webpack/production.js
@@ -7,26 +7,27 @@ const sharedConfig = require('./shared.js');
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
 
 module.exports = merge(sharedConfig, {
-
-  devtool: 'source-map', // separate sourcemap file, suitable for production
-
   output: { filename: '[name]-[chunkhash].js' },
+  devtool: 'source-map', // separate sourcemap file, suitable for production
+  stats: 'normal',
 
   plugins: [
     new webpack.optimize.UglifyJsPlugin({
-      compress: true,
+      sourceMap: true,
       mangle: true,
 
+      compress: {
+        warnings: false,
+      },
+
       output: {
         comments: false,
       },
-
-      sourceMap: true,
     }),
     new CompressionPlugin({
       asset: '[path].gz[query]',
       algorithm: 'gzip',
-      test: /\.(js|css|svg|eot|ttf|woff|woff2)$/,
+      test: /\.(js|css|html|json|ico|svg|eot|otf|ttf)$/,
     }),
     new BundleAnalyzerPlugin({ // generates report.html and stats.json
       analyzerMode: 'static',
diff --git a/config/webpack/shared.js b/config/webpack/shared.js
index de57ecb68..4d865b816 100644
--- a/config/webpack/shared.js
+++ b/config/webpack/shared.js
@@ -7,21 +7,22 @@ const { sync } = require('glob');
 const ExtractTextPlugin = require('extract-text-webpack-plugin');
 const ManifestPlugin = require('webpack-manifest-plugin');
 const extname = require('path-complete-extname');
-const { env, paths, publicPath, loadersDir } = require('./configuration.js');
+const { env, settings, output, loadersDir } = require('./configuration.js');
 const localePackPaths = require('./generateLocalePacks');
 
-const extensionGlob = `**/*{${paths.extensions.join(',')}}*`;
-const packPaths = sync(join(paths.source, paths.entry, extensionGlob));
-const entryPacks = [].concat(packPaths).concat(localePackPaths).filter(path => path !== join(paths.source, paths.entry, 'custom.js'));
+const extensionGlob = `**/*{${settings.extensions.join(',')}}*`;
+const entryPath = join(settings.source_path, settings.source_entry_path);
+const packPaths = sync(join(entryPath, extensionGlob));
+const entryPacks = [...packPaths, ...localePackPaths].filter(path => path !== join(entryPath, 'custom.js'));
 
-const customApplicationStyle = resolve(join(paths.source, 'styles/custom.scss'));
-const originalApplicationStyle = resolve(join(paths.source, 'styles/application.scss'));
+const customApplicationStyle = resolve(join(settings.source_path, 'styles/custom.scss'));
+const originalApplicationStyle = resolve(join(settings.source_path, 'styles/application.scss'));
 
 module.exports = {
   entry: entryPacks.reduce(
     (map, entry) => {
       const localMap = map;
-      let namespace = relative(join(paths.source, paths.entry), dirname(entry));
+      let namespace = relative(join(entryPath), dirname(entry));
       if (namespace === join('..', '..', '..', 'tmp', 'packs')) {
         namespace = ''; // generated by generateLocalePacks.js
       }
@@ -33,8 +34,8 @@ module.exports = {
   output: {
     filename: '[name].js',
     chunkFilename: '[name]-[chunkhash].js',
-    path: resolve(paths.output, paths.entry),
-    publicPath,
+    path: output.path,
+    publicPath: output.publicPath,
   },
 
   module: {
@@ -44,7 +45,10 @@ module.exports = {
   plugins: [
     new webpack.EnvironmentPlugin(JSON.parse(JSON.stringify(env))),
     new ExtractTextPlugin(env.NODE_ENV === 'production' ? '[name]-[hash].css' : '[name].css'),
-    new ManifestPlugin({ fileName: paths.manifest, publicPath, writeToFileEmit: true }),
+    new ManifestPlugin({
+      publicPath: output.publicPath,
+      writeToFileEmit: true,
+    }),
     new webpack.optimize.CommonsChunkPlugin({
       name: 'common',
       minChunks: (module, count) => {
@@ -67,15 +71,15 @@ module.exports = {
       'mastodon-application-style': existsSync(customApplicationStyle) ?
                                     customApplicationStyle : originalApplicationStyle,
     },
-    extensions: paths.extensions,
+    extensions: settings.extensions,
     modules: [
-      resolve(paths.source),
-      resolve(paths.node_modules),
+      resolve(settings.source_path),
+      'node_modules',
     ],
   },
 
   resolveLoader: {
-    modules: [paths.node_modules],
+    modules: ['node_modules'],
   },
 
   node: {
diff --git a/config/webpack/paths.yml b/config/webpacker.yml
index fdae76141..c1cd6e93b 100644
--- a/config/webpack/paths.yml
+++ b/config/webpacker.yml
@@ -1,12 +1,9 @@
 # Note: You must restart bin/webpack-dev-server for changes to take effect
 
 default: &default
-  config: config/webpack
-  entry: packs
-  output: public
-  manifest: manifest.json
-  node_modules: node_modules
-  source: app/javascript
+  source_path: app/javascript
+  source_entry_path: packs
+  public_output_path: packs
   extensions:
     - .js
     - .sass
@@ -21,9 +18,15 @@ default: &default
 development:
   <<: *default
 
+  dev_server:
+    host: 0.0.0.0
+    port: 8080
+    https: false
+
 test:
   <<: *default
-  manifest: manifest-test.json
+
+  public_output_path: packs-test
 
 production:
   <<: *default
diff --git a/package.json b/package.json
index a6aa1ce1c..0abea3235 100644
--- a/package.json
+++ b/package.json
@@ -3,8 +3,8 @@
   "license": "AGPL-3.0",
   "scripts": {
     "postversion": "git push --tags",
-    "build:development": "cross-env NODE_ENV=development yarn webpack -- --config config/webpack/development.js",
-    "build:production": "cross-env NODE_ENV=production yarn webpack -- --config config/webpack/production.js",
+    "build:development": "cross-env RAILS_ENV=development ASSET_HOST=http://0.0.0.0:8080 ./bin/webpack",
+    "build:production": "cross-env RAILS_ENV=production ./bin/webpack",
     "manage:translations": "node ./config/webpack/translationRunner.js",
     "start": "rimraf ./tmp/streaming && babel ./streaming/index.js --out-dir ./tmp && node ./tmp/streaming/index.js",
     "storybook": "cross-env NODE_ENV=test start-storybook -s ./public -p 9001 -c storybook",
@@ -97,6 +97,7 @@
     "redux-thunk": "^2.2.0",
     "requestidlecallback": "^0.3.0",
     "reselect": "^3.0.1",
+    "resolve-url-loader": "^2.0.2",
     "rimraf": "^2.6.1",
     "sass-loader": "^6.0.5",
     "stringz": "^0.2.1",
diff --git a/yarn.lock b/yarn.lock
index 960c2ca02..5532efa6b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -163,6 +163,18 @@ acorn@^5.0.0, acorn@^5.0.1, acorn@^5.0.3:
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.0.3.tgz#c460df08491463f028ccb82eab3730bf01087b3d"
 
+adjust-sourcemap-loader@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/adjust-sourcemap-loader/-/adjust-sourcemap-loader-1.1.0.tgz#412d92404eb61e4113635012cba53a33d008e0e2"
+  dependencies:
+    assert "^1.3.0"
+    camelcase "^1.2.1"
+    loader-utils "^1.0.2"
+    lodash.assign "^4.0.1"
+    lodash.defaults "^3.1.2"
+    object-path "^0.9.2"
+    regex-parser "^2.2.1"
+
 airbnb-js-shims@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/airbnb-js-shims/-/airbnb-js-shims-1.1.1.tgz#27224f0030f244e6570442ed1020772c1434aec2"
@@ -342,7 +354,7 @@ assert-plus@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/assert-plus/-/assert-plus-0.2.0.tgz#d74e1b87e7affc0db8aadb7021f3fe48101ab234"
 
-assert@^1.1.1:
+assert@^1.1.1, assert@^1.3.0:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/assert/-/assert-1.4.1.tgz#99912d591836b5a6f5b345c0f07eefc08fc65d91"
   dependencies:
@@ -386,6 +398,10 @@ asynckit@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/asynckit/-/asynckit-0.4.0.tgz#c79ed97f7f34cb8f2ba1bc9790bcc366474b4b79"
 
+atob@~1.1.0:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/atob/-/atob-1.1.3.tgz#95f13629b12c3a51a5d215abdce2aa9f32f80773"
+
 autoprefixer@^6.3.1:
   version "6.7.7"
   resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-6.7.7.tgz#1dbd1c835658e35ce3f9984099db00585c782014"
@@ -1488,7 +1504,7 @@ camelcase-keys@^2.0.0:
     camelcase "^2.0.0"
     map-obj "^1.0.0"
 
-camelcase@^1.0.2:
+camelcase@^1.0.2, camelcase@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-1.2.1.tgz#9bb5304d2e0b56698b2c758b08a3eaa9daa58a39"
 
@@ -1500,7 +1516,7 @@ camelcase@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-3.0.0.tgz#32fc4b9fcdaf845fcdf7e73bb97cac2261f0ab0a"
 
-camelcase@^4.1.0:
+camelcase@^4.0.0, camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
@@ -1823,7 +1839,11 @@ content-type@~1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/content-type/-/content-type-1.0.2.tgz#b7d113aee7a8dd27bd21133c4dc2529df1721eed"
 
-convert-source-map@^1.1.0:
+convert-source-map@^0.3.3:
+  version "0.3.5"
+  resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-0.3.5.tgz#f1d802950af7dd2631a1febe0596550c86ab3190"
+
+convert-source-map@^1.1.0, convert-source-map@^1.1.1:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.5.0.tgz#9acd70851c6d5dfdd93d9282e5edf94a03ff46b5"
 
@@ -2007,6 +2027,15 @@ css-what@2.1:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/css-what/-/css-what-2.1.0.tgz#9467d032c38cfaefb9f2d79501253062f87fa1bd"
 
+css@^2.0.0:
+  version "2.2.1"
+  resolved "https://registry.yarnpkg.com/css/-/css-2.2.1.tgz#73a4c81de85db664d4ee674f7d47085e3b2d55dc"
+  dependencies:
+    inherits "^2.0.1"
+    source-map "^0.1.38"
+    source-map-resolve "^0.3.0"
+    urix "^0.1.0"
+
 cssesc@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/cssesc/-/cssesc-0.1.0.tgz#c814903e45623371a0477b40109aaafbeeaddbb4"
@@ -3914,7 +3943,7 @@ loader-utils@^0.2.16:
     json5 "^0.5.0"
     object-assign "^4.0.1"
 
-loader-utils@^1.0.1, loader-utils@^1.0.2, loader-utils@^1.x:
+loader-utils@^1.0.0, loader-utils@^1.0.1, loader-utils@^1.0.2, loader-utils@^1.x:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-1.1.0.tgz#c98aef488bcceda2ffb5e2de646d6a754429f5cd"
   dependencies:
@@ -3948,6 +3977,18 @@ lodash._basecreate@^3.0.0:
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/lodash._basecreate/-/lodash._basecreate-3.0.3.tgz#1bc661614daa7fc311b7d03bf16806a0213cf821"
 
+lodash._bindcallback@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/lodash._bindcallback/-/lodash._bindcallback-3.0.1.tgz#e531c27644cf8b57a99e17ed95b35c748789392e"
+
+lodash._createassigner@^3.0.0:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/lodash._createassigner/-/lodash._createassigner-3.1.1.tgz#838a5bae2fdaca63ac22dee8e19fa4e6d6970b11"
+  dependencies:
+    lodash._bindcallback "^3.0.0"
+    lodash._isiterateecall "^3.0.0"
+    lodash.restparam "^3.0.0"
+
 lodash._getnative@^3.0.0:
   version "3.9.1"
   resolved "https://registry.yarnpkg.com/lodash._getnative/-/lodash._getnative-3.9.1.tgz#570bc7dede46d61cdcde687d65d3eecbaa3aaff5"
@@ -3956,7 +3997,15 @@ lodash._isiterateecall@^3.0.0:
   version "3.0.9"
   resolved "https://registry.yarnpkg.com/lodash._isiterateecall/-/lodash._isiterateecall-3.0.9.tgz#5203ad7ba425fae842460e696db9cf3e6aac057c"
 
-lodash.assign@^4.2.0:
+lodash.assign@^3.0.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-3.2.0.tgz#3ce9f0234b4b2223e296b8fa0ac1fee8ebca64fa"
+  dependencies:
+    lodash._baseassign "^3.0.0"
+    lodash._createassigner "^3.0.0"
+    lodash.keys "^3.0.0"
+
+lodash.assign@^4.0.1, lodash.assign@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
 
@@ -3984,7 +4033,14 @@ lodash.create@3.1.1:
     lodash._basecreate "^3.0.0"
     lodash._isiterateecall "^3.0.0"
 
-lodash.defaults@^4.0.1:
+lodash.defaults@^3.1.2:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/lodash.defaults/-/lodash.defaults-3.1.2.tgz#c7308b18dbf8bc9372d701a73493c61192bd2e2c"
+  dependencies:
+    lodash.assign "^3.0.0"
+    lodash.restparam "^3.0.0"
+
+lodash.defaults@^4.0.0, lodash.defaults@^4.0.1:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.defaults/-/lodash.defaults-4.2.0.tgz#d09178716ffea4dde9e5fb7b37f6f0802274580c"
 
@@ -4044,6 +4100,10 @@ lodash.reject@^4.4.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash.reject/-/lodash.reject-4.6.0.tgz#80d6492dc1470864bbf583533b651f42a9f52415"
 
+lodash.restparam@^3.0.0:
+  version "3.6.1"
+  resolved "https://registry.yarnpkg.com/lodash.restparam/-/lodash.restparam-3.6.1.tgz#936a4e309ef330a7645ed4145986c85ae5b20805"
+
 lodash.some@^4.4.0:
   version "4.6.0"
   resolved "https://registry.yarnpkg.com/lodash.some/-/lodash.some-4.6.0.tgz#1bb9f314ef6b8baded13b549169b2a945eb68e4d"
@@ -4516,6 +4576,10 @@ object-keys@^1.0.10, object-keys@^1.0.8:
   version "1.0.11"
   resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.0.11.tgz#c54601778ad560f1142ce0e01bcca8b56d13426d"
 
+object-path@^0.9.2:
+  version "0.9.2"
+  resolved "https://registry.yarnpkg.com/object-path/-/object-path-0.9.2.tgz#0fd9a74fc5fad1ae3968b586bda5c632bd6c05a5"
+
 object.assign@^4.0.4:
   version "4.0.4"
   resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.0.4.tgz#b1c9cc044ef1b9fe63606fc141abbb32e14730cc"
@@ -5897,6 +5961,10 @@ regex-cache@^0.4.2:
     is-equal-shallow "^0.1.3"
     is-primitive "^2.0.0"
 
+regex-parser@^2.2.1:
+  version "2.2.7"
+  resolved "https://registry.yarnpkg.com/regex-parser/-/regex-parser-2.2.7.tgz#bd090e09181849acc45457e765f7be2a63f50ef1"
+
 regexpu-core@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/regexpu-core/-/regexpu-core-1.0.0.tgz#86a763f58ee4d7c2f6b102e4764050de7ed90c6b"
@@ -6017,6 +6085,24 @@ resolve-from@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/resolve-from/-/resolve-from-1.0.1.tgz#26cbfe935d1aeeeabb29bc3fe5aeb01e93d44226"
 
+resolve-url-loader@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/resolve-url-loader/-/resolve-url-loader-2.0.2.tgz#c465e97ea0a4791f3961f766cea775ff2e3ceb8c"
+  dependencies:
+    adjust-sourcemap-loader "^1.1.0"
+    camelcase "^4.0.0"
+    convert-source-map "^1.1.1"
+    loader-utils "^1.0.0"
+    lodash.defaults "^4.0.0"
+    rework "^1.0.1"
+    rework-visit "^1.0.0"
+    source-map "^0.5.6"
+    urix "^0.1.0"
+
+resolve-url@~0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
+
 resolve@^1.1.6, resolve@^1.3.3:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.3.3.tgz#655907c3469a8680dc2de3a275a8fdd69691f0e5"
@@ -6030,6 +6116,17 @@ restore-cursor@^1.0.1:
     exit-hook "^1.0.0"
     onetime "^1.0.0"
 
+rework-visit@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/rework-visit/-/rework-visit-1.0.0.tgz#9945b2803f219e2f7aca00adb8bc9f640f842c9a"
+
+rework@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/rework/-/rework-1.0.1.tgz#30806a841342b54510aa4110850cd48534144aa7"
+  dependencies:
+    convert-source-map "^0.3.3"
+    css "^2.0.0"
+
 rgb@~0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/rgb/-/rgb-0.1.0.tgz#be27b291e8feffeac1bd99729721bfa40fc037b5"
@@ -6315,12 +6412,31 @@ source-list-map@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.0.tgz#aaa47403f7b245a92fbc97ea08f250d6087ed085"
 
+source-map-resolve@^0.3.0:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/source-map-resolve/-/source-map-resolve-0.3.1.tgz#610f6122a445b8dd51535a2a71b783dfc1248761"
+  dependencies:
+    atob "~1.1.0"
+    resolve-url "~0.2.1"
+    source-map-url "~0.3.0"
+    urix "~0.1.0"
+
 source-map-support@^0.4.2:
   version "0.4.15"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.4.15.tgz#03202df65c06d2bd8c7ec2362a193056fef8d3b1"
   dependencies:
     source-map "^0.5.6"
 
+source-map-url@~0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/source-map-url/-/source-map-url-0.3.0.tgz#7ecaf13b57bcd09da8a40c5d269db33799d4aaf9"
+
+source-map@^0.1.38:
+  version "0.1.43"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.43.tgz#c24bc146ca517c1471f5dacbe2571b2b7f9e3346"
+  dependencies:
+    amdefine ">=0.0.4"
+
 source-map@^0.4.2:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.4.4.tgz#eba4f5da9c0dc999de68032d8b4f76173652036b"
@@ -6780,6 +6896,10 @@ unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
 
+urix@^0.1.0, urix@~0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
+
 url-loader@^0.5.8:
   version "0.5.8"
   resolved "https://registry.yarnpkg.com/url-loader/-/url-loader-0.5.8.tgz#b9183b1801e0f847718673673040bc9dc1c715c5"