const path = require('path'); module.exports = { mode: 'production', entry: './index.ts', output: { filename: 'bundle.js' }, resolve: { // Add `.ts` and `.tsx` as a resolvable extension. extensions: [ '.ts', '.tsx', '.js' ] }, module: { rules: [ // all files with a `.ts` or `.tsx` extension will be handled by `ts-loader` { test: /\.tsx?$/, loader: 'ts-loader', options: { allowTsInNodeModules: true } }, { test: /\.(s*)css$/, use: [ 'style-loader', 'css-loader', 'sass-loader' ] } ] } };