How can I implement async validation using Joi and Yup?

How can I implement async validation using Joi and Yup?

You can implement async validation in Joi using the validateAsync method, and in Yup using the validate method with a promise.

Can you show me an example of async validation in Joi?

Sure! Here's a simple example:

const Joi = require('joi');

const schema = Joi.object({
  email: Joi.string().email().required()
});

async function validateEmail(email) {
  try {
    await schema.validateAsync({ email });
    console.log('Email is valid!');
  } catch (error) {
    console.error('Validation error:', error.details[0].message);
  }
}

This will validate the email asynchronously.

What about an example using Yup?

Here's an example using Yup:

const *Yup = require('yup');

const schema = Yup.object().shape({
  email: Yup.string().email().required()
});

async function validateEmail(email) {
  try {
    await schema.validate({ email });
    console.log('Email is valid!');
  } catch (error) {
    console.error('Validation error:', error.errors[0]);
  }
}

This will also validate the email asynchronously.