webpack.config.js

const path = require('path');

module.exports = {
    entry:'./src/index.js',
    output:{
        filename:'main.js',
        path: path.resolve(__dirname,'dist'),
    },

    devServer:{
        contentBase:path.join(__dirname,'./'),
        port:3200
    },
    module:{
        rules: [
            {
              test: /\.js$/,
              exclude: /(node_modules)/,
              use: {
                loader: 'babel-loader',
                options: {
                  presets: ['@babel/preset-env']
                }
              }
            },
            // un-comment this once you need a sass-loader
            // {
            //   test: /\.scss$/,
            //   use:[
            //     'style-loader',
            //     'css-loader',
            //     'sass-loader',
            //   ]
            // }
        ]
    },

}