Improve Zod integration

[radekmie]

Since we added Zod integration in #1169, there were a few open topics that we can finally address:

1. Error messages. These can be now configured using ZodErrorMap and we should show an example of that in the docs and the playground.
2. Labels. There's a feature request for adding a .label(string) function to a schema (Add a label function as like yup colinhacks/zod#1767) but in the meantime, we could use .describe(string).
   • To be ready for the .label to get released, it should be a flag on the bridge whether the .description should be used as a label.
3. Async schemas. There's no way of detecting whether we should use async validation or not, so (safeParse throws a generic Error, source) we should have a flag on the bridge deciding it.

[Rishabhg71]

@radekmie can I add label feature?

[radekmie]

@RG7279805 Definitely! If you'd need help, feel free to file a draft PR first.

[Rishabhg71]

@radekmie I have tried to add that label function in ZodType
but it doesn't seem to be the best way since .label() has to be first in the chain
z.string().label().min(2) - labels will work for min condition but not for invalid_type or required condition

I have made a draft where I add a label in RawCreateParams
and then it gets available in this._def.label
which can be passed down further
addIssueToContext -> makeIssue -> defaultErrorMap labels can be used here

one problem tho label has to be passed everywhere in addIssueToContext

I am sorry if I did something wrong I hope you overlook it since it's my first commit in open source

current draft : https://github.com/RG7279805/zod/tree/label-in-raw-params
will create a PR after confirmation

[radekmie]

@RG7279805 I think we've misunderstood a little 😅 I meant the usage of it in uniforms, not adding a feature of Zod. In any case, I already saw you've raised it also in Zod's repo, so that's fine.

[Rishabhg71]

@radekmie yeah it was my mistake 😃

[dj-fiorex]

I think that i opened an issue about Zod that could be integrated here #1292