webpack.dev.babel.js

import path from 'path';
import HtmlWebpackPlugin from 'html-webpack-plugin';

module.exports = {
  mode: 'development',
  entry: {
    bundle: './src/index.js',
  },
  output: {
    path: path.join(__dirname, 'dist'),
    filename: '[name].[chunkhash].js',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        use: 'babel-loader',
        exclude: /node_modules/,
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader'],
      },
    ],
  },
  optimization: {
    splitChunks: {
      cacheGroups: {
        vendor: {
          chunks: 'initial',
          test: path.resolve(__dirname, 'node_modules'),
          name: 'vendor',
          enforce: true,
        },
      },
    },
  },
  plugins: [
    new HtmlWebpackPlugin({
      template: 'src/index.html',
    }),
  ],
};