Upgrade to webpack v4

  -  Delete .babelrc
  - Update .eslintrc
  - Update some webpack dependencies
  - Update configs for webpack and electron
  - Remove hot loader

.eslintrc

@@ -1,5 +1,4 @@
 {
-  "parser": "babel-eslint",
   "env": {
     "browser": true,
     "es6": true

app/index.js

@@ -1,7 +1,6 @@
 /* eslint-disable */
 import React from 'react';
 import ReactDOM from 'react-dom';
-import { AppContainer } from 'react-hot-loader';
 import registerServiceWorker from './config/registerServiceWorker';
 import Root from './config/Root';
 import { Provider } from 'react-redux';
@@ -12,11 +11,9 @@ let MdynaStore = store;
 const render = Component => {
   store.getState();
   ReactDOM.render(
-    <AppContainer>
       <Provider store={MdynaStore}>
         <Component />
-      </Provider>
-    </AppContainer>,
+      </Provider>,
     document.getElementById('root'),
   );
 };

package.json

@@ -129,7 +129,7 @@
     "react-hot-loader": "^3.0.0-beta.6",
     "sass-loader": "^6.0.6",
     "style-loader": "^0.18.1",
-    "url-loader": "0.5.8",
+    "url-loader": "^1.1.2",
     "webpack": "3.3.0",
     "webpack-dev-server": "2.8.2"
   },

webpack.config.electron.js

@@ -14,7 +14,6 @@ const webpackConfig = merge.smart(baseConfig, {
       },
     }),
   ],
-  target: 'electron',
 });
 
 module.exports = webpackConfig;

webpack.config.js

@@ -1,11 +1,11 @@
 const path = require('path');
 const webpack = require('webpack');
-const ExtractTextPlugin = require('extract-text-webpack-plugin');
+
 const HtmlWebpackPlugin = require('html-webpack-plugin');
 
 const port = process.env.PORT || '8080';
 module.exports = {
-  entry: ['react-hot-loader/patch', './app/index.js', './app/style.scss', '@babel/polyfill'],
+  entry: ['./app/index.js', './app/style.scss', '@babel/polyfill'],
   output: {
     filename: 'index.js',
     publicPath: process.env.NODE_ENV === 'PROD' ? './' : `http://localhost:${port}/dist/web`,
@@ -27,11 +27,11 @@ module.exports = {
       },
       {
         test: /\.scss$/,
-        loader: ExtractTextPlugin.extract({
-          fallback: 'style-loader',
-          loader:
-            'css-loader?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!sass-loader',
-        }),
+        use: [
+          'style-loader', // creates style nodes from JS strings
+          'css-loader', // translates CSS into CommonJS
+          'sass-loader', // compiles Sass to CSS, using Node Sass by default
+        ],
       },
       {
         test: /.jsx?$/,
@@ -41,7 +41,6 @@ module.exports = {
           presets: ['@babel/react', '@babel/preset-env'],
           plugins: [
             '@babel/plugin-proposal-optional-chaining',
-            'react-hot-loader/babel',
             '@babel/plugin-proposal-class-properties',
           ],
         },
@@ -75,7 +74,6 @@ module.exports = {
     ],
   },
   plugins: [
-    new ExtractTextPlugin({ filename: 'style/style.css', disable: false, allChunks: true }),
     new webpack.HotModuleReplacementPlugin(),
     new HtmlWebpackPlugin({
       filename: 'index.html',

yarn.lock

@@ -914,6 +914,11 @@ acorn@^5.0.0, acorn@^5.5.0:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
   integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
 
+ajv-errors@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/ajv-errors/-/ajv-errors-1.0.1.tgz#f35986aceb91afadec4102fbd85014950cefa64d"
+  integrity sha512-DCRfO/4nQ+89p/RK43i8Ezd41EqdGIU4ld7nGF8OQ14oc/we5rEntLCUa7+jrn3nn83BosfwZA0wb4pon2o8iQ==
+
 ajv-keywords@^2.0.0, ajv-keywords@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-2.1.1.tgz#617997fc5f60576894c435f940d819e135b80762"
@@ -5919,11 +5924,6 @@ mime-types@^2.1.12, mime-types@~2.1.17, mime-types@~2.1.18, mime-types@~2.1.19:
   dependencies:
     mime-db "~1.37.0"
 
-[email protected]:
-  version "1.3.6"
-  resolved "https://registry.yarnpkg.com/mime/-/mime-1.3.6.tgz#591d84d3653a6b0b4a3b9df8de5aa8108e72e5e0"
-  integrity sha1-WR2E02U6awtKO5343lqoEI5y5eA=
-
 [email protected]:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.4.1.tgz#121f9ebc49e3766f311a76e1fa1c8003c4b03aa6"
@@ -5934,7 +5934,7 @@ mime@^1.3.4, mime@^1.5.0:
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
   integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
 
-mime@^2.4.0:
+mime@^2.0.3, mime@^2.4.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.0.tgz#e051fd881358585f3279df333fe694da0bcffdd6"
   integrity sha512-ikBcWwyqXQSHKtciCcctu9YfPbFYZ4+gbHEmE0Q8jzcTYQg5dHCr3g2wwAZjPoJfQVXZq6KXAjpXOTf5/cjT7w==
@@ -8392,6 +8392,15 @@ schema-utils@^0.4.0:
     ajv "^6.1.0"
     ajv-keywords "^3.1.0"
 
+schema-utils@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-1.0.0.tgz#0b79a93204d7b600d4b2850d1f66c2a34951c770"
+  integrity sha512-i27Mic4KovM/lnGsy8whRCHhc7VicJajAjTrYg11K9zfZXnYIt4k5F+kZkwjnrhKzLic/HLU4j11mjsz2G/75g==
+  dependencies:
+    ajv "^6.1.0"
+    ajv-errors "^1.0.0"
+    ajv-keywords "^3.1.0"
+
 scss-tokenizer@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/scss-tokenizer/-/scss-tokenizer-0.2.3.tgz#8eb06db9a9723333824d3f5530641149847ce5d1"
@@ -9511,13 +9520,14 @@ urix@^0.1.0:
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"
   integrity sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=
 
-url-loader@0.5.8:
-  version "0.5.8"
-  resolved "https://registry.yarnpkg.com/url-loader/-/url-loader-0.5.8.tgz#b9183b1801e0f847718673673040bc9dc1c715c5"
-  integrity sha1-uRg7GAHg+EdxhnNnMEC8ncHHFcU=
+url-loader@^1.1.2:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/url-loader/-/url-loader-1.1.2.tgz#b971d191b83af693c5e3fea4064be9e1f2d7f8d8"
+  integrity sha512-dXHkKmw8FhPqu8asTc1puBfe3TehOCo2+RmOOev5suNCIYBcT626kxiWg1NBVkwc4rO8BGa7gP70W7VXuqHrjg==
   dependencies:
-    loader-utils "^1.0.2"
-    mime "1.3.x"
+    loader-utils "^1.1.0"
+    mime "^2.0.3"
+    schema-utils "^1.0.0"
 
 url-parse-lax@^1.0.0:
   version "1.0.0"