Use Webpack to output es6?

Webpack still can't do this. There is an open ticket here https://github.com/webpack/webpack/issues/2933

For now, if you want to bundle es6 the most promising solution seems to be rollup

This article is also linked in the discussion on GitHub and provides a pretty good overview

https://medium.com/webpack/webpack-and-rollup-the-same-but-different-a41ad427058c

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.

https://webpack.js.org/migrate/5/#turn-off-es2015-syntax-in-runtime-code-if-necessary