webpack.config.js

//@ts-check

'use strict'

const path = require('path')

/**@type {import('webpack').Configuration}*/
module.exports = {
  context: __dirname,
  target: 'node', // VS Code extensions run in a Node.js-context 📖 -> https://webpack.js.org/configuration/node/
  entry: {
    extension: './src/extension.ts' // the entry point of this extension, 📖 -> https://webpack.js.org/configuration/entry-context/
  },
  output: {
    // the bundle is stored in the 'out' folder (check package.json), 📖 -> https://webpack.js.org/configuration/output/
    path: path.resolve(__dirname, 'out'),
    filename: '[name].js',
    libraryTarget: 'commonjs2',
    devtoolModuleFilenameTemplate: '../[resource-path]'
  },
  devtool: 'source-map',
  externals: {
    vscode: 'commonjs vscode' // the vscode-module is created on-the-fly and must be excluded. Add other modules that cannot be webpack'ed, 📖 -> https://webpack.js.org/configuration/externals/
  },
  resolve: {
    // support reading TypeScript and JavaScript files, 📖 -> https://github.com/TypeStrong/ts-loader
    mainFields: ['browser', 'module', 'main'], // look for `browser` entry point in imported node modules
    extensions: ['.ts', '.js']
  },
  module: {
    rules: [
      {
        test: /\.ts$/,
        exclude: /node_modules/,
        use: [{loader: 'ts-loader'}]
      }
    ]
  }
}