webpack.config.js

const path = require('path');

const CALVA_MAIN = {
    // vscode extensions run in a Node.js-context
    // 📖 -> https://webpack.js.org/configuration/node/
    target: 'node',
    // the entry point of this extension,
    // 📖 -> https://webpack.js.org/configuration/entry-context/
    entry: path.resolve(__dirname, 'src/extension.ts'),
    output: {
        // the bundle is stored in the 'dist' folder (check package.json),
        // 📖 -> https://webpack.js.org/configuration/output/
        path: path.resolve(__dirname, 'out'),
        filename: 'extension.js',
        libraryTarget: 'commonjs2',
        devtoolModuleFilenameTemplate: '../[resource-path]',
    },
    devtool: 'source-map',
    externals: {
        // 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/
        vscode: 'commonjs vscode',
    },
    resolve: {
        // support reading TypeScript and JavaScript files,
        // 📖 -> https://github.com/TypeStrong/ts-loader
        extensions: ['.ts', '.js'],
    },
    // Watch options for the webview.
    // 📖 -> https://webpack.js.org/configuration/watch/
    watchOptions: {
        aggregateTimeout: 200,
        poll: 500,
        ignored: /node_modules/,
    },
    module: {
        rules: [
            {
                test: /\.ts$/,
                exclude: /node_modules/,
                loader: 'ts-loader',
                options: {
                    configFile: path.resolve(__dirname, 'tsconfig.json'),
                },
            },
        ],
    },
};

// Build the configuration based on production
// or development mode. The extension is only
// webpacked for production.
function buildConfig(isProduction) {
    const configs = [];
    if (isProduction) {
        configs.unshift(CALVA_MAIN);
    }
    //return configs
    return configs;
}

// Get the mode from the argv array.
module.exports = (env, argv) => {
    const isProduction = argv.mode === 'production';
    return buildConfig(isProduction);
};