Is there a way to use Webpack to bundle all the JavaScript files and output the resulting bundle.js as an es6 file, and not to es5? So, it is Webpack\'s job to bundle, but is it
webpack 5 can generate both ES5 and ES6/ES2015 code.
The default configuration will generate ES2015. If you need to support older browsers (like IE11), you can set output.ecmaVersion: 5.
output.ecmaVersion: 5
https://webpack.js.org/migrate/5/#turn-off-es2015-syntax-in-runtime-code-if-necessary