How can I create custom error messages in Zod?

How can I create custom error messages in Zod?

You can create custom error messages in Zod by using the .refine() method or by passing a custom message to the validation method.

Can you show me an example of using .refine() for custom messages?

Sure! Here's an example:

const schema = z.string().refine(value => value.length > 5, {
  message: 'String must be longer than 5 characters',
});

This will return your custom message if the validation fails.

What if I want to customize messages for different validations?

You can specify different messages for each validation by chaining methods. For example:

const schema = z.string()
  .min(5, { message: 'Too short!' })
  .max(10, { message: 'Too long!' });

Thanks! Can I also localize these messages?

Yes, you can localize messages by using a translation library and passing the translated string to the message option.