webpack.config.js

var path = require('path');
var webpack = require('webpack');
var UglifyJsPlugin = require('uglifyjs-webpack-plugin');

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

var config = {
    mode: 'production',
    // 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: {
        'matomo-ts': [PATHS.entryPoint],
        'matomo-ts.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: 'matomo-ts',
        umdNamedDefine: true,
        globalObject: 'this',
    },
    // Add resolve for `tsx` and `ts` files, otherwise Webpack would
    // only look for common JavaScript file extension (.js)
    resolve: {
        extensions: ['.ts', '.tsx', '.js'],
    },
    // Activate source maps for the bundles in order to preserve the original
    // source when the user debugs the application
    devtool: 'source-map',
    module: {
        // Webpack doesn't understand TypeScript files and a loader is needed.
        // `node_modules` folder is excluded in order to prevent problems with
        // the library dependencies, as well as `__tests__` folders that
        // contain the tests for the library
        rules: [
            {
                test: /\.tsx?$/,
                loader: 'awesome-typescript-loader',
                exclude: /node_modules/,
                options: {
                    // we don't want any declaration file in the bundles
                    // folder since it wouldn't be of any use ans the source
                    // map already include everything for debugging
                    declaration: true,
                },
            },
        ],
    },
    optimization: {
        minimizer: [
            new UglifyJsPlugin({
                sourceMap: true,
                include: /\.min\.js$/,
            }),
        ],
    },
};

module.exports = config;