webpack.config.js

    const {CheckerPlugin} = require('awesome-typescript-loader'),
        webpack = require('webpack'),
        fs = require('fs-extra'),
        copy = require('copy'),
        path = require("path"),
        dts = require('dts-bundle');

    function percentage_handler(percentage, msg) {
        if (0 === percentage) {
            console.log("Build started... Good luck!");
        } else if (1 === percentage) {

            dts.bundle({
                name: 'primitive-primitives',
                main: 'src/main.d.ts',
                out: '../dist/main.d.ts',
            });
        }
    }

    module.exports = {
        entry: './src/main.ts',

        output: {
            filename: '/dist/main.js',
            libraryTarget: "umd"
        },

        // Currently we need to add '.ts' to the resolve.extensions array.
        resolve: {
            extensions: ['.ts', '.tsx', '.js', '.jsx', 'd.ts']
        },

        // Source maps support ('inline-source-map' also works)
        devtool: 'source-map',

        // Add the loader for .ts files.
        module: {
            loaders: [
                {
                    test: /\.tsx?$/,
                    loader: 'awesome-typescript-loader'
                },
                {
                    test: /\.glsl$/,
                    loader: 'raw-loader'
                }
            ]
        },
        plugins: [
            new webpack.ProgressPlugin(percentage_handler),
        ]
    };