shared.webpack.config.js

//@ts-check
/* eslint-disable @typescript-eslint/no-var-requires */
/** @typedef {import('webpack').Configuration} WebpackConfig **/

'use strict';

const path = require('path');
const merge = require('merge-options');

module.exports = function withDefaults(/**@type WebpackConfig*/extConfig) {

    /** @type WebpackConfig */
    let defaultConfig = {
        mode: 'none', // this leaves the source code as close as possible to the original (when packaging we set this to 'production')
        target: 'node', // extensions run in a node context
        node: {
            __dirname: false // leave the __dirname-behaviour intact
        },
        resolve: {
            mainFields: ['module', 'main'],
            extensions: ['.ts', '.js'] // support ts-files and js-files
        },
        module: {
            rules: [{
                test: /\.ts$/,
                exclude: /node_modules/,
                use: [{
                    // configure TypeScript loader:
                    // * enable sources maps for end-to-end source maps
                    loader: 'ts-loader',
                    options: {
                        compilerOptions: {
                            "sourceMap": true,
                        }
                    }
                }]
            }]
        },
        externals: {
            'vscode': 'commonjs vscode', // ignored because it doesn't exist
        },
        output: {
            // all output goes into `dist`.
            // packaging depends on that and this must always be like it
            filename: '[name].js',
            path: path.join(extConfig.context ?? '', 'out'),
            libraryTarget: "commonjs",
        },
        // yes, really source maps
        devtool: 'source-map'
    };

    return merge(defaultConfig, extConfig);
};