Bump webpacker from 3.5.5 to 4.0.2 (#10277)

Bumps [webpacker](https://github.com/rails/webpacker) from 3.5.5 to 4.0.2.
- [Release notes](https://github.com/rails/webpacker/releases)
- [Changelog](https://github.com/rails/webpacker/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rails/webpacker/compare/v3.5.5...v4.0.2)

Signed-off-by: dependabot[bot] <support@dependabot.com>
Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

5 files changed, 0 insertions, 76 deletions

diff --git a/config/webpack/loaders/assets.js b/config/webpack/loaders/assets.js
deleted file mode 100644
index 643b3eeb0..000000000
--- a/config/webpack/loaders/assets.js
+++ /dev/null
@@ -1,12 +0,0 @@
-const { env, publicPath } = require('../configuration.js');
-
-module.exports = {
-  test: /\.(jpg|jpeg|png|gif|svg|eot|ttf|woff|woff2)$/i,
-  use: [{
-    loader: 'file-loader',
-    options: {
-      publicPath,
-      name: env.NODE_ENV === 'production' ? '[name]-[hash].[ext]' : '[name].[ext]',
-    },
-  }],
-};
diff --git a/config/webpack/loaders/babel.js b/config/webpack/loaders/babel.js
deleted file mode 100644
index 7509617fd..000000000
--- a/config/webpack/loaders/babel.js
+++ /dev/null
@@ -1,12 +0,0 @@
-const { resolve } = require('path');
-
-const env = process.env.NODE_ENV || 'development';
-
-module.exports = {
-  test: /\.js$/,
-  exclude: /node_modules/,
-  loader: 'babel-loader',
-  options: {
-    cacheDirectory: env === 'development' ? false : resolve(__dirname, '..', '..', '..', 'tmp', 'cache', 'babel-loader'),
-  },
-};
diff --git a/config/webpack/loaders/babel_external.js b/config/webpack/loaders/babel_external.js
deleted file mode 100644
index 39e74ed90..000000000
--- a/config/webpack/loaders/babel_external.js
+++ /dev/null
@@ -1,21 +0,0 @@
-const { resolve } = require('path');
-
-const env = process.env.NODE_ENV || 'development';
-
-if (env === 'development') {
-  module.exports = {};
-} else {
-  // babel options to apply only to external libraries, e.g. remove-prop-types
-  module.exports = {
-    test: /\.js$/,
-    include: /node_modules/,
-    loader: 'babel-loader',
-    options: {
-      babelrc: false,
-      plugins: [
-        'transform-react-remove-prop-types',
-      ],
-      cacheDirectory: env === 'development' ? false : resolve(__dirname, '..', '..', '..', 'tmp', 'cache', 'babel-loader-external'),
-    },
-  };
-}
diff --git a/config/webpack/loaders/mark.js b/config/webpack/loaders/mark.js
deleted file mode 100644
index e62a526b0..000000000
--- a/config/webpack/loaders/mark.js
+++ /dev/null
@@ -1,8 +0,0 @@
-if (process.env.NODE_ENV === 'production') {
-  module.exports = {};
-} else {
-  module.exports = {
-    test: /\.js$/,
-    loader: 'mark-loader',
-  };
-}
diff --git a/config/webpack/loaders/sass.js b/config/webpack/loaders/sass.js
deleted file mode 100644
index 67a1890b8..000000000
--- a/config/webpack/loaders/sass.js
+++ /dev/null
@@ -1,23 +0,0 @@
-const MiniCssExtractPlugin = require('mini-css-extract-plugin');
-
-module.exports = {
-  test: /\.s?css$/i,
-  use: [
-    MiniCssExtractPlugin.loader,
-    'css-loader',
-    {
-      loader: 'postcss-loader',
-      options: {
-        sourceMap: true,
-      },
-    },
-    {
-      loader: 'sass-loader',
-      options: {
-        fiber: require('fibers'),
-        implementation: require('sass'),
-        sourceMap: true,
-      },
-    },
-  ],
-};