add an `allowList` like `nativeAllowList` that allows all custom nodes to have allowed exceptions.

[clord]

emotion allows css={[aRules, bRules]} and does the right thing for re-rendering, so it should not be flagged as a performance issue. We can turn this off for native elements like div, but css is allowed on any element, including custom elements.

There are other examples like this, for example, I can accept style on a custom element and pass it unchanged to the native one, and so would make sense to allow style as an exception on custom elements too.

[amsul]

Would love to see something like this! @cvazac is this something you'd consider merging if we submit a PR for it?

[cvazac]

@amsul absolutely, it’s a great idea.

[milesj]

This would be useful for RN props also.