Validation error message
| type | example |
|---|---|
| static string | 'Username is required.' |
| template string | 'Password must be at least {min} characters.' |
| function | ({ value, field, max }) => `${field} must be less than ${max} but was ${value}.` |
The parsed value is always provided. If available, field is also provided. Depending on the validator, additional fields may be available.