webpack.config.js

const path = require('path');
const WriteFilePlugin = require('write-file-webpack-plugin');
const BrowserSyncPlugin = require('browser-sync-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');

module.exports = {
    entry: './src/index.js',
    output: {
        path: path.resolve(__dirname, 'dist'),
        filename: 'bundle.js'
    },
    module: {
        rules: [
            {
                test: /\.js/,
                exclude: /(node_modules|bower_components)/,
                use: {
                    loader: 'babel-loader',
                    options: {
                        presets: ['@babel/preset-env'],
                    }
                }
            }
        ]
    },
    plugins: [
        new WriteFilePlugin(),
        new HtmlWebpackPlugin({
            template: path.resolve(__dirname, "index.html")
        }),
        new BrowserSyncPlugin({
            host: 'localhost',
            port: 3000,
            server: { baseDir: ['dist'] }
        })
    ]
};