[robinricard]

The Realms polyfill is a polyfill for an actual TC39 JS proposal [0]. It's currently at stage 2. If the proposal gets accepted, you will not need the polyfill. This would also work with any JS embedding (browsers, node, etc...) as it would be baked in the language.

[0]: https://github.com/tc39/proposal-realms

[orf]

You would still need the polyfill for quite a while. Just not forever.

[donatj]

We’ve needed to support IE11 a lot closer to forever than I had ever expected.

[osrec]

That's great! Thanks for sharing :)