Yup vs Joi for frontend validation

I want to implement frontend validation with either Yup or Joi.

From all the docs and articles that I've found, I've got to a couple of conclusions:

• Joi has better performance
• Joi is more popular for backend validation, while Yup is more popular for frontend validation
• Joi has a lack of support on the frontend
• Per official docs, Yup is leaner and built with client-side validation
• Yup bundle size is ~2.5 times smaller than Joi - link

However, I didn't manage to find what Joi lacks in terms of support compared to Yup?

Right now, from all of these conclusions, it's choosing to either have a smaller bundle or better performance.

For frontend performance bundle size is more important than fast work (you do not need to make millions of validations on the client-side). As you mentioned: "Yup bundle size [60.1kB] is ~2.5 times smaller than Joi [145.9kB] - link"

So my choice is Yup.

But if you use Joi for backend and you're going to share schemas with frontend, I agree with Seth Holladay.