webpack.config.js

const path = require('path');
const TerserPlugin = require('terser-webpack-plugin');

module.exports = (env, argv) => {

    const conf = {
        mode: 'development',
        devServer: {
            open: true,
            openPage: 'index.html',
            contentBase: path.join(__dirname, 'public'),
            watchContentBase: true,
            port: 3000,
        },
        entry: {app: './src/index.js'},
        output: {
            path: path.join(__dirname, 'dist'),
            publicPath: '/js/',
            filename: `[name].js`
        },
        optimization: {
            minimizer: [new TerserPlugin({
                terserOptions: {
                    compress: {
                        drop_console: true,
                    }
                }
            })],
        },
        module: {
            rules: [{
                test: /\.js$/,
                exclude: /(node_modules|bower_components)/,
                use: [{
                    loader: 'babel-loader',
                    options: {
                        presets: [['@babel/preset-env']]
                    }
                }]
            }]
        }


    };


    return conf;

};