Why use yup validation?

Question

There is a validation method provided by the react hook form. Nevertheless, some developers sometimes use yup validation. What I thought about seems to have the advantage of using schema validation together in the frontend and backend.
I wonder if there is anything else out of this.

Answer 1

I'm using zod as an external validation instead of yup ...

schema validation together in the frontend and backend.

Another big advantage is ...

• Since the schema can be defined independently, unit testing can be done easily.
• Since the schema can be defined independently, it is easy to understand as a validation definition.
• Can handle complex validation

Complex validation is, for example, "when the validation of field A depends on the state of other fields B".

With zod, you can create complex validations across other fields, such as with?refine superRefine.

• https://github.com/colinhacks/zod#refine
• https://github.com/colinhacks/zod#superrefine