In my opinion it's the biggest improvement from ES6. However, you still need Babel to use this feature, even in Chrome/Firefox.

For those interested:

import: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

export: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

You can't use it in the browser yet. That's why it has been excluded. You need typescript or babel to use it