What are the best practices for async validation using Yup?

What are the best practices for async validation using Yup?

When using Yup for async validation, it's important to ensure that your validation schema is set up correctly. You should use the test method for custom async validations.

Can you give me an example of how to implement async validation?

Sure! You can create a custom test like this: Yup.string().test('check-username', 'Username already taken', async value => { const response = await checkUsername(value); return response.isAvailable; });

What should I do if the async validation fails?

If the async validation fails, you can handle it by displaying an error message to the user, guiding them to correct the input.

Are there any performance considerations I should keep in mind?

Yes, avoid making too many async calls in quick succession. Debounce the input or validate on blur to improve performance.