[cheeaun]

Found a polyfill here https://github.com/mozilla/sanitizer-polyfill

[dkyc]

This just uses DOMPurify under the hood

[Izkata]

...yes, that's what a polyfill is: a javascript implementation of a new spec that's only applied when the current browser doesn't yet support the new spec. This lets devs start using it right away, then when it has enough support across browsers the polyfill can be removed without changing their code.