webpack.common.js

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

module.exports = {
  entry: {
    app: './src/index.tsx',
  },
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist'),
    clean: true,
    publicPath: '/',
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      filename: 'index.html',
      inject: true,
      template: './public/index.html',
    }),
    new CopyPlugin({
      patterns: [{ from: path.resolve(__dirname, 'src/assets'), to: 'assets' }],
    }),
    new Dotenv({
      systemvars: true,
    }),
  ],
  module: {
    rules: [
      {
        test: /\.(js|jsx|ts|tsx)$/,
        exclude: /[\\/]node_modules[\\/]/,
        use: ['babel-loader'],
      },
      {
        test: /\.(png|jpe?g|gif|svg)$/,
        loader: 'file-loader',
        options: {
          name: '[path][name].[ext]',
        },
      },
    ],
  },
  resolve: {
    extensions: ['.js', '.jsx', '.ts', '.tsx'],
    alias: {
      '@': path.resolve(__dirname, 'src'),
    },
  },
};