Haozheng Li

I think this can be a good feature.

Thanks contribution. is it ready for review?

I've noticed some new types in internal.d.ts return the boolean when the input generic isn't expected, I think we could only care about expected input like all the other types...

I noticed that two `Add` types are exported, but they don't mean the same thing. Maybe it would be better to rename the `Add` that means `A + B` to...

> I've noticed that when you apply `PartialDeep` to something containing `Date` it makes the `Date` internal structure partial Can you provide your test cases? I seem can't reproduce that.

> But how can I make it work with only 1 level deep? 🤔 What's your case? I can't seem to reproduce that.

> I think we could add an overload when that parameter is not passed and use the simple handling. I think the core reason is we wrap the result with...

Please read the [contributing guidelines](https://github.com/sindresorhus/type-fest/blob/main/.github/contributing.md) before submitting contribution.

> provide real life usage example Yes, you need: > Write about some real-world use-cases where it can be useful. (It can be hard sometimes for users to see where...

need remove .idea folder