How can I use async-validator for complex validation scenarios?

How can I use async-validator for complex validation scenarios?

You can use async-validator to handle complex validation by defining custom rules and asynchronous checks.

Can you give me an example of a custom validation rule?

Sure! You can create a custom rule by extending the validator and implementing your logic, like checking if a username is unique.

How do I handle multiple asynchronous validations?

You can use the Promise.all method to run multiple async validations in parallel and wait for all of them to complete.

What if one of the validations fails?

If one fails, you can catch the error and handle it accordingly, either by showing a message or logging it.