5 ms·

Then you must prepare two bundles, one for new browsers and one for old. I suppose that's possible, but doesn't seem worth it.

• TomMarius 9y ago
  It is worth it most of the time.
• styfle 9y ago
  You can use <script type=module> to target newer browsers. It’s definitely worth having two bundles because the ES6 and newer is much smaller. And one day, you stop shipping the old ES5 bundle.