Add support for extending zod error messages from existing objects

[anthonyalayo]

I have a zod object that is handed to me from elsewhere, and I do not have the ability to change it. However, I do know what items it contains. For example, it has a "firstName" string with a min length of 3 and a max length of 24.

I believe at present there is no way to do something like:

import { alreadyMadeSchema } from 'external-schema-provider';

...

const updatedSchema = alreadyMadeSchema.update({
firstName.min.3: "too short",
firstName.max.24: "too long"
});

Could support be added for such a feature?

[dosubot[bot]]

Hi, @anthonyalayo. I'm Dosu, and I'm helping the Zod team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• You requested a feature to enhance error messages for immutable Zod schemas.
• Proposed a method to update error messages for specific constraints, such as string length, without altering the original schema.
• Seeking support for implementing this functionality to improve schema validation feedback.
• No comments or developments have occurred on this issue yet.

Next Steps:

• Please let me know if this issue is still relevant to the latest version of the Zod repository. You can keep the discussion open by commenting on the issue.
• If no updates are provided, the issue will be automatically closed in 14 days.

Thank you for your understanding and contribution!

[anthonyalayo]

Yes, it is still relevant to the latest version of Zod.

[dosubot[bot]]

Hi @colinhacks, the user @anthonyalayo has confirmed that the feature request for enhancing error messages for immutable Zod schemas is still relevant. Could you please assist them with this issue? Thank you!

[anthonyalayo]

@colinhacks could I get some feedback on this?

[dosubot[bot]]

@colinhacks could you please take a look at this issue? The user @anthonyalayo has indicated it is still relevant and would appreciate some feedback.

[arfath-linklet]

+1, this is still relevant. Many tools generate Zod schemas and as consumers we could inspect and extend it. But simple config updates without changing schema shape would be a nice feature.