webpack.config.js

/* eslint-disable @typescript-eslint/no-var-requires */
const path = require('path');
const dotenv = require('dotenv');
const webpack = require('webpack');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const TerserWebpackPlugin = require('terser-webpack-plugin');
const HtmlWebPackPlugin = require('html-webpack-plugin');

dotenv.config();
const { NODE_ENV, PORT } = process.env;

const development = NODE_ENV !== 'production';

/**
 * @type {import('webpack').Configuration}
 */
module.exports = {
  mode: development ? 'development' : 'production',
  entry: {
    app: ['@babel/polyfill', './src/client/index'],
  },
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: '[name].js',
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env': {
        NODE_ENV: JSON.stringify(NODE_ENV),
        PORT: JSON.stringify(PORT),
      },
    }),
    new CleanWebpackPlugin(),
    new HtmlWebPackPlugin({
      template: './src/client/index.html',
      filename: './index.html',
    }),
  ],
  module: {
    rules: [
      {
        test: /\.tsx?$/,
        exclude: /node_modules/,
        loaders: ['babel-loader'],
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js'],
  },
  devtool: 'inline-source-map',
  // eslint-disable-next-line unicorn/prevent-abbreviations
  devServer: {
    contentBase: './dist',
    port: 3000,
    historyApiFallback: true,
    overlay: true,
  },
  optimization: {
    minimizer: [new TerserWebpackPlugin()],
    noEmitOnErrors: true,
  },
};