webpack.config.js

var path = require("path");
var webpack = require("webpack");
const TerserPlugin = require("terser-webpack-plugin");

var PATHS = {
  entryPoint: path.resolve(__dirname, 'src/index.ts'),
  bundles: path.resolve(__dirname, '_bundles'),
}

var config = {
  // These are the entry point of our library. We tell webpack to use
  // the name we assign later, when creating the bundle. We also use
  // the name to filter the second entry point for applying code
  // minification via UglifyJS
  entry: {
    'hugo-uswds': [PATHS.entryPoint],
    'hugo-uswds.min': [PATHS.entryPoint]
  },
  // The output defines how and where we want the bundles. The special
  // value `[name]` in `filename` tell Webpack to use the name we defined above.
  // We target a UMD and name it MyLib. When including the bundle in the browser
  // it will be accessible at `window.MyLib`
  output: {
    path: PATHS.bundles,
    filename: '[name].js',
    libraryTarget: 'umd',
    library: 'HugoUSWDS',
    umdNamedDefine: true
  },
  // Add resolve for `tsx` and `ts` files, otherwise Webpack would
  // only look for common JavaScript file extension (.js)
  resolve: {
    // Add `.ts` and `.tsx` as a resolvable extension.
    extensions: [".ts", ".tsx", ".js"],
    // Add support for TypeScripts fully qualified ESM imports.
    extensionAlias: {
     ".js": [".js", ".ts"],
     ".cjs": [".cjs", ".cts"],
     ".mjs": [".mjs", ".mts"]
    }
  },
  // Activate source maps for the bundles in order to preserve the original
  // source when the user debugs the application
  devtool: 'source-map',
  module: {
    rules: [
      // all files with a `.ts`, `.cts`, `.mts` or `.tsx` extension will be handled by `ts-loader`
      { test: /\.([cm]?ts|tsx)$/, loader: "ts-loader" }
    ]
  },
  externals: {
    jquery: 'jQuery'
  },
  optimization: {
    minimize: true,
    minimizer: [new TerserPlugin()],
  },
}

module.exports = config;