webpack.config.js

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const outputDir = path.join(__dirname, 'build/');

const isProd = process.env.NODE_ENV === 'production';

module.exports = {
    entry: './lib/es6_global/src/Index.bs.js',
    mode: isProd ? 'production' : 'development',
    output: {
        path: outputDir,
        filename: 'Index.js'
    },
    plugins: [
        new HtmlWebpackPlugin({
            template: 'src/index.html',
            inject: false
        })
    ],
    devServer: {
        compress: true,
        contentBase: outputDir,
        port: process.env.PORT || 8000,
        historyApiFallback: true
    },
    module: {
        rules: [
        {
            test: /\.(js|jsx)$/,
            exclude: /node_modules/,
            use: {
            loader: "babel-loader"
            }
        }
        ]
    },
    mode: "development"
};