webpack.dev.js

'use strict';

const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const publicPath = '/';
const serverConfig = require('./webpack.devServer');

module.exports = {
  mode: 'development',
  devtool: 'cheap-module-source-map',
  entry: './src/index.js',
  output: {
    filename: 'static/js/bundle.js',
    chunkFilename: 'static/js/[name].chunk.js',
    publicPath: publicPath,
    devtoolModuleFilenameTemplate: info => path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
  },
  optimization: {
    splitChunks: {
      chunks: 'all',
      name: false,
    },
    runtimeChunk: true,
  },
  module: {
    strictExportPresence: true,
    rules: [
      {
        test: /\.(js|jsx)$/,
        exclude: /(node_modules|bower_components)/,
        loader: 'babel-loader',
      },
      {
        test: /\.css$/,
        exclude: /(node_modules|bower_components)/,
        use: [
          'style-loader',
          {
            loader: 'css-loader',
            options: {
              modules: true,
              importLoaders: 1,
              localIdentName: '[name]__[local]--[hash:base64:5]',
            },
          },
          {
            loader: 'postcss-loader',
            options: {
              plugins: () => [require('autoprefixer')({
                browsers: ['> 1%', 'last 2 versions'],
              })],
            },
          },
        ],
      },
    ],
  },
  resolve: { extensions: ['*', '.js', '.jsx'] },
  optimization: {
    usedExports: true,
  },
  devServer: serverConfig,
  plugins: [
    new HtmlWebpackPlugin({
      inject: true,
      template: __dirname + '/src/index.html',
      title: 'React Test Development',
    }),
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify('development'),
    }),
    // new webpack.HotModuleReplacementPlugin(),
  ],
};