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, 'src');

module.exports = {
  module: {
    rules: [
      {
        test: /\.css$/,
        use: [
          { loader: 'style-loader' },
          { loader: 'css-loader' },
          { loader: 'postcss-loader' }
        ],
        include: defaultInclude
      },
      {
        test: /\.jsx?$/,
        use: [{ loader: 'babel-loader' }],
        include: defaultInclude
      },
      {
        test: /\.(jpe?g|png|gif)$/,
        use: [{ loader: 'file-loader?name=img/[name]__[hash:base64:5].[ext]' }],
        include: defaultInclude
      },
      {
        test: /\.(eot|svg|ttf|woff|woff2)$/,
        use: [
          { loader: 'file-loader?name=font/[name]__[hash:base64:5].[ext]' }
        ],
        include: defaultInclude
      }
    ]
  },
  target: 'electron-renderer',
  plugins: [
    new HtmlWebpackPlugin(),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('development')
    })
  ],
  devtool: 'cheap-source-map',
  devServer: {
    contentBase: path.resolve(__dirname, 'dist'),
    stats: {
      colors: true,
      chunks: false,
      children: false
    },
    before() {
      spawn('electron', ['.'], {
        shell: true,
        env: process.env,
        stdio: 'inherit'
      })
        .on('close', () => process.exit(0))
        .on('error', spawnError => console.error(spawnError));
    }
  }
};