Add isNull type

[dwightjack]

Add the native validator isNull. The validator basically returns {type: null} and does not have any method or flag.

It can be used as an escape hatch for nullable non-required props.

See #206 for more context.

[victorgarciaesgi]

It's all good for me! :D
I just think the naming can be improved to remain consistent with other validators all being lowercased.
I was thinking nullable() ?
Again just a really minor thing you have the last word :p

[victorgarciaesgi]

Not related to this PR (But i don't know how to contact you otherwise), I recently migrated one of my repo to vitest instead of jest, and it's night and day. If you want I could work on a PR for it :)

[dwightjack]

Not related to this PR (But i don't know how to contact you otherwise), I recently migrated one of my repo to vitest instead of jest, and it's night and day. If you want I could work on a PR for it :)

That would be great! I wanted to take a look into vitest but didn't have the time yet. If you have time to submit a PR, that's very welcome 🙇.

[dwightjack]

PS: for things like proposals, enhancements etc, I guess we could you the discussion feature. 😃

[victorgarciaesgi]

PS: for things like proposals, enhancements etc, I guess we could you the discussion feature. 😃

Aha yes I always forgot about this. I'll keep you updated if I find a little time to do it :D

[dwightjack]

@victorgarciaesgi I changed the name to nullable, thanks for the suggestion.

I'm going to merge this PR and release an RC version

[victorgarciaesgi]

Yeay! 🎉