webpack.config.js

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


const env = process.env.WEBPACK_ENV
const outputfilename = "fairplay"
const banner = ''
// /**
//  * Copyright (c) 2019, Neap Pty Ltd.
//  * All rights reserved.
//  * 
//  * This source code is licensed under the BSD-style license found in the
//  * LICENSE file in the root directory of this source tree.
// */
// `

const { plugins, outputfile } = env == "build" 
    ? { 
        plugins: [
            new UglifyJSPlugin(), 
            new webpack.BannerPlugin({ banner })
        ], 
        outputfile: `${outputfilename}.min.js` 
    } 
    : { 
        plugins: [
            new webpack.BannerPlugin({ banner})
        ], 
        outputfile: `${outputfilename}.js` 
    } 

module.exports = {
    entry: [
        `./src/app.js`
    ],
    output: {
        path: __dirname + '/dist',
        filename: outputfile,
        libraryTarget: 'umd',
        umdNamedDefine: true
    },
    module: {
        rules: [{
            loader: "babel-loader",
            exclude: [
                path.resolve(__dirname, "node_modules")
            ],
            // Only run `.js` and `.jsx` files through Babel
            test: /\.jsx?$/,
            // Options to configure babel with
            query: {
                plugins: ['transform-runtime'],
                presets: ['es2015'],
            }
        }, ]
    },
    devtool: 'source-map',
    plugins: plugins
}