Build in File and FileList Support

[iamalipe]

Add a support for File and FileList.

example

const size = 10000 // byte
z.flle().size(10000).allowType(["image/jpeg","image/png"])

z.fileList().min(1).max(10).size(10000).allowType(["image/jpeg","image/png"])

[kaciakmaciak]

Hey, I've created a PR for this and happy to hear from you. https://github.com/colinhacks/zod/pull/3118

[colinhacks]

This PR has landed in the v4 branch but it may take some time before it lands in a stable release. In the meantime, I recommend z.instanceof:

z.instanceof(File)