webpack.config.js

const path = require('path');
const nodeExternals = require('webpack-node-externals');

module.exports = {
    entry: './src/index.ts',
    devtool: 'cheap-module-source-map',
    output: {
        filename: 'index.js',
        path: path.resolve(__dirname, 'dist'),
        library: '',
        libraryTarget: 'commonjs'
    },
    externals: [nodeExternals()],
    module: {
        rules: [
            {
                test: /\.tsx?$/,
                use: 'ts-loader',
                exclude: /node_modules/
            },
            {
                test: /\.(s*)css$/,
                use: ['style-loader', 'css-loader', 'sass-loader']
            },
            {
                test: /\.(png|gif|jpg|cur|svg)$/i,
                loader: 'url-loader', options: { limit: 8192 }
            }
        ]
    },
    resolve: {
        extensions: ['.tsx', '.ts', '.jsx', '.js']
    }
};