webpack.config.js

const webpack = require('webpack')
const path = require('path')
const chalk = require('chalk')
const CopyPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const BundleAnalyzerPlugin = require('webpack-bundle-analyzer')
  .BundleAnalyzerPlugin
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const TsconfigPathsPlugin = require('tsconfig-paths-webpack-plugin')
const ProgressBarPlugin = require('progress-bar-webpack-plugin')

const config = {
  entry: ['react-hot-loader/patch', './src/index.tsx'],
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].[contenthash].js',
  },
  devServer: {
    contentBase: './dist',
  },
  plugins: [
    new webpack.DefinePlugin({
      MAPBOX_TOKEN: JSON.stringify(process.env.MAPBOX_TOKEN),
    }),
    new CopyPlugin({
      patterns: [{ from: 'src/index.html' }],
    }),
    new HtmlWebpackPlugin({
      template: 'src/index.html',
      title: 'Yokohama nurseries',
    }),
    new BundleAnalyzerPlugin({
      analyzerMode: 'static',
      openAnalyzer: false,
    }),
    new CleanWebpackPlugin(),
    new ProgressBarPlugin({
      format: `   build [:bar] ${chalk.green.bold(
        ':percent'
      )} (:elapsed seconds)`,
    }),
  ],
  module: {
    rules: [
      {
        test: /\.ts(x)?$/,
        loader: 'ts-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.svg$/,
        use: 'file-loader',
      },
      {
        test: /\.png$/,
        use: [
          {
            loader: 'url-loader',
            options: {
              mimetype: 'image/png',
            },
          },
        ],
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
    alias: {
      'react-dom': '@hot-loader/react-dom',
    },
    plugins: [new TsconfigPathsPlugin()],
  },
  optimization: {
    runtimeChunk: 'single',
    splitChunks: {
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendors',
          chunks: 'all',
        },
      },
    },
  },
}

module.exports = (env, argv) => {
  if (argv.hot) {
    // Cannot use 'contenthash' when hot reloading is enabled.
    config.output.filename = '[name].[hash].js'
  }

  return config
}