webpack.common.js

const path = require('path');
const fs = require('fs');
const url = require('url');

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

// Make sure any symlinks in the project folder are resolved:
// https://github.com/facebookincubator/create-react-app/issues/637
const appDirectory = fs.realpathSync(process.cwd());
const resolveApp = relativePath => path.resolve(appDirectory, relativePath);

module.exports = {
  devtool: 'inline-source-map',
  devServer: {
    historyApiFallback: true,
  },
  entry: './src/index',
  output: {
    path: path.resolve(__dirname, 'dist'),
    filename: 'app.bundle.js',
    publicPath: '/',
  },
  resolve: {
    modules: ['src', 'node_modules'],
    extensions: ['.ts', '.tsx', '.js', '.json']
  },
  module: {
    rules: [
      {
        // Include ts, tsx, js, and jsx files.
        test: /\.(ts|js)x?$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        loader: 'file-loader',
        options: {
          name: 'images/[name].[ext]'
        }
      },
    ],
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      inject: true,
      template: resolveApp('public/index.html')
    })
  ]
};