webpack.config.js

const path = require("path");

// Based on https://code.visualstudio.com/api/working-with-extensions/bundling-extension

module.exports = {
    target: "node", // vscode extensions run in a Node.js-context 📖 -> https://webpack.js.org/configuration/node/
    entry: "./src/extension.ts", // the entry point of this extension, 📖 -> https://webpack.js.org/configuration/entry-context/
    output: {
        path: path.resolve(__dirname, "dist"), // the bundle is stored in the 'dist' folder (see the package.json), 📖 -> https://webpack.js.org/configuration/output/
        filename: "extension.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: {
        extensions: [".ts", ".js"] // support TypeScript and JavaScript sources, 📖 -> https://github.com/TypeStrong/ts-loader
    },
    module: {
        rules: [
            {
                test: /\.ts$/,
                exclude: /node_modules/,
                use: [
                    {
                        loader: "ts-loader"
                    }
                ]
            }
        ]
    }
};