webpack.prod.config.ts

import path from 'path';
import { Configuration } from 'webpack';
import HtmlWebpackPlugin from 'html-webpack-plugin';
import ForkTsCheckerWebpackPlugin from 'fork-ts-checker-webpack-plugin';
import ESLintPlugin from 'eslint-webpack-plugin';
import { CleanWebpackPlugin } from 'clean-webpack-plugin';
import 'webpack-dev-server'; // Imported just to avoid type error in configuration

const config: Configuration = {
  mode: 'production',
  entry: './src/index.tsx',
  output: {
    path: path.resolve(__dirname, 'build'),
    filename: '[name].[contenthash].js',
    publicPath: './', // outputs js-bundle relative to html path
  },
  module: {
    rules: [
      {
        test: /\.(ts|js)x?$/i,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader', // Using babel-loader to load files using .babelrc configs.
        },
      },
    ],
  },
  resolve: {
    extensions: ['.tsx', '.ts', '.js', '.jsx'],
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: './public/index.html',
    }),
    new ForkTsCheckerWebpackPlugin({
      async: false,
    }),
    new ESLintPlugin({
      extensions: ['js', 'jsx', 'ts', 'tsx'],
    }),
    new CleanWebpackPlugin({
      // Removes existing build folder everytime a new build is trigerred.
      cleanOnceBeforeBuildPatterns: [path.resolve(__dirname, 'build/**')],

      verbose: true,
    }),
  ],
};

export default config;