webpack.common.js

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

module.exports = {
  cache: true,
  stats: "normal",
  entry: "./src/js/main.ts",
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: "src/index.html"
    }),
    new ServiceWorkerWebpackPlugin({
      entry: "./src/js/sw.js"
    }),
    new CopyWebpackPlugin([{ from: "static" }])
  ],
  recordsOutputPath: path.join(__dirname, "build", "records.json"),
  optimization: {
    splitChunks: {
      chunks: "all",
      maxInitialRequests: Infinity,
      minSize: 10000,
      maxSize: 20000,
      cacheGroups: {
        vendor: {
          test: /[\\/]node_modules[\\/]/,
          name(module) {
            // get the name. E.g. node_modules/packageName/not/this/part.js
            // or node_modules/packageName
            const packageName = module.context.match(
              /[\\/]node_modules[\\/](.*?)([\\/]|$)/
            )[1];

            // npm package names are URL-safe, but some servers don't like @ symbols
            return `npm.${packageName.replace("@", "")}`;
          }
        }
      }
    }
  },
  output: {
    filename: "[name]-[hash].js",
    path: path.resolve(__dirname, "build")
  },
  module: {
    rules: [
      {
        test: /\.[tj]sx?$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        test: /\.css/,
        use: [
          {
            loader: "style-loader"
          },
          {
            loader: "css-loader"
          }
        ]
      },
      {
        test: /\.less$/,
        use: [
          {
            loader: "style-loader"
          },
          {
            loader: "css-loader"
          },
          {
            loader: "less-loader",
            options: {
              strictMath: true,
              noIeCompat: true
            }
          }
        ]
      }
    ]
  },
  resolve: {
    extensions: [".tsx", ".ts", ".js"]
  }
};