webpack.config.js

const path = require('path');
const webpack = require('webpack');
const merge = require('webpack-merge');
const ATL = require('awesome-typescript-loader');
const AngularCompilerPlugin = require('@ngtools/webpack').AngularCompilerPlugin;
const CheckerPlugin = ATL.CheckerPlugin;
const TsConfigPathsPlugin = ATL.TsConfigPathsPlugin;

const UglifyJSPlugin = require('uglifyjs-webpack-plugin');

module.exports = (env) => {
    // Configuration in common to both client-side and server-side bundles
    const isDevBuild = !(env && env.prod);
    const sharedConfig = {
        stats: { modules: false },
        context: __dirname,
        resolve: {
            extensions: ['.js', '.ts', 'scss', 'css'], plugins: [
                new TsConfigPathsPlugin(/* { tsconfig, compiler } */)
            ]
        },
        output: {
            filename: '[name].js',
            publicPath: 'dist/' // Webpack dev middleware, if enabled, handles requests for this URL prefix
        },
        module: {
            rules: [
                {
                    test: /\.ts$/, include: /ClientApp/, use: isDevBuild ? [{
                        loader: 'ng-router-loader',
                        options: {
                            loader: 'async-import',
                            genDir: 'compiled',
                            aot: !isDevBuild
                        }
                    }, 'awesome-typescript-loader?silent=true', 'angular2-template-loader']
                        : '@ngtools/webpack'
                },
                { test: /\.html$/, use: 'html-loader?minimize=false' },
                { test: /\.css$/, use: ['to-string-loader', isDevBuild ? 'css-loader' : 'css-loader?minimize'] },
                { test: /\.scss$/, use: ['to-string-loader', 'css-loader', 'sass-loader'] },
                { test: /\.(jpg|png|gif)$/, use: 'file-loader' },
                { test: /\.(woff|woff2|eot|ttf|svg)$/, use: 'file-loader' }
            ]
        },
        plugins: [new CheckerPlugin()]
    };

    // Configuration for client-side bundle suitable for running in browsers
    const clientBundleOutputDir = './wwwroot/dist';
    const clientBundleConfig = merge(sharedConfig, {
        entry: { 'main-client': './ClientApp/main.ts' },
        output: { path: path.join(__dirname, clientBundleOutputDir) },
        plugins: [
            new webpack.DllReferencePlugin({
                context: __dirname,
                manifest: require('./wwwroot/dist/vendor-manifest.json')
            })
        ].concat(isDevBuild ? [
            // Plugins that apply in development builds only
            new webpack.SourceMapDevToolPlugin({
                filename: '[file].map', // Remove this line if you prefer inline source maps
                moduleFilenameTemplate: path.relative(clientBundleOutputDir, '[resourcePath]') // Point sourcemap entries to the original file locations on disk
            })
        ] : [
                // Plugins that apply in production builds only
                new UglifyJSPlugin(),
                new AngularCompilerPlugin({
                    tsConfigPath: './tsconfig.json',
                    entryModule: path.join(__dirname, 'ClientApp/app/app.module#AppModule')
                })
            ])
    });

    return [clientBundleConfig];
};