webpack.config.js

const path = require('path')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ESLintPlugin = require('eslint-webpack-plugin')
const { CleanWebpackPlugin } = require('clean-webpack-plugin')
const CopyPlugin = require('copy-webpack-plugin')
const Dotenv = require('dotenv-webpack')

module.exports = (env) => ({
  mode: 'production',
  entry: './src/index.ts',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].[contenthash].js',
  },
  plugins: [
    new Dotenv({ path: `./.env.${env.mode}` }),
    new HtmlWebpackPlugin({
      hash: true,
      template: './src/index.html',
      filename: './index.html',
      favicon: './assets/favicon.ico',
    }),
    new ESLintPlugin({
      extensions: ['.tsx', '.ts', '.js'],
      exclude: 'node_modules',
    }),
    new CleanWebpackPlugin(),
    new CopyPlugin({
      patterns: [{ from: './src/assets/images', to: './assets/images' }],
    }),
  ],
  resolve: {
    extensions: ['.ts', '.js', '...'],
  },
  optimization: {
    splitChunks: {
      chunks: 'all',
    },
  },
  performance: {
    maxEntrypointSize: 912000,
    maxAssetSize: 912000,
  },
  devtool: 'source-map',
  devServer: {
    allowedHosts: 'auto',
    client: {
      overlay: true,
    },
    open: true,
    port: 8000,
    static: {
      directory: path.join(__dirname, 'dist'),
      publicPath: '/',
    },
  },
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        exclude: [/node_modules/, /_notes/],
        use: {
          loader: 'ts-loader',
        },
      },
      {
        test: /\.(sass|scss)$/i,
        use: ['style-loader', 'css-loader', 'sass-loader'],
      },
      {
        test: /\.(png|svg|jpg|jpeg|gif)$/i,
        type: 'asset/resource',
      },
    ],
  },
})