webpack.dev.config.js

const webpack = require('webpack')
const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const { spawn } = require('child_process')

// Any directories you will be adding code/files into, need to be added to this array so webpack will pick them up
const defaultInclude = path.resolve(__dirname, './app/src');

module.exports = {
  entry: './app/src',
  module: {
    rules: [
      {
        test: /\.css$/,
        //use: [{ loader: 'style-loader' }, { loader: 'css-loader' }],
        use: ["style-loader", "css-loader"],
        include: [defaultInclude,
          path.resolve(__dirname, 'node_modules/codemirror/lib/codemirror.css'), path.resolve(__dirname, 'node_modules/codemirror/theme/dracula.css'), path.resolve(__dirname, './node_modules/react-tabs/style/react-tabs.css'), path.resolve(__dirname, './node_modules/react-tree-graph/dist/style.css')]
      },
      {
        test: /\.jsx?$/,
        use: [{ loader: 'babel-loader' }],
        include: defaultInclude
      },
      {
        test: /\.(jpe?g|png|gif)$/,
        use: [{ loader: 'file-loader?name=img/[name]__[hash:base64:5].[ext]' }],
        include: defaultInclude
      },
      {
        test: /\.(eot|ttf|woff|woff2)$/,
        use: [{ loader: 'file-loader?name=font/[name]__[hash:base64:5].[ext]' }],
        include: defaultInclude
      },
      {
        test: /\.svg$/,
        use: [
          {
            loader: 'svg-url-loader',
            options: {
              limit: 10000,
            },
          },
        ],
      },
    ]
  },
  target: 'electron-renderer',
  plugins: [
    new HtmlWebpackPlugin(),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('development')
    })
  ],
  devtool: 'cheap-source-map',
  devServer: {
    proxy: {
      '/': 'localhost:3000',
    },
    contentBase: path.resolve(__dirname, 'dist'),
    stats: {
      colors: true,
      chunks: false,
      children: false
    },
    before() {
      spawn(
        'electron',
        ['.'],
        { shell: true, env: process.env, stdio: 'inherit' }
      )
      .on('close', code => process.exit(0))
      .on('error', spawnError => console.error(spawnError))
    }
  }
}