webpack.common.js

const webpack = require("webpack");
const path = require("path");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const CopyWebpackPlugin = require('copy-webpack-plugin')
const { CleanWebpackPlugin } = require("clean-webpack-plugin");

module.exports = {
  entry: ['./src/index.js'],
  output: {
    path: path.resolve(process.cwd(), 'dist'),
    filename: '[name].bundle.js',
    chunkFilename: '[name].chunk.js'
  },
  resolve: {
    extensions: ['.js']
  },
  optimization: {
    splitChunks: {
      cacheGroups: {
        commons: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendors',
          chunks: 'all',
          filename: '[name].bundle.js'
        }
      }
    }
  },
  module: {
    rules: [{ test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader' }]
  },
  plugins: [
    new CleanWebpackPlugin(),
    new webpack.DefinePlugin({
      CANVAS_RENDERER: JSON.stringify(true),
      WEBGL_RENDERER: JSON.stringify(true)
    }),
    new HtmlWebpackPlugin({
      template: "./src/index.html"
    }),
    new CopyWebpackPlugin([
      { from: 'src/assets', to: 'assets' }
    ]),
  ]
};