How can I effectively use 'yup' for validation in my project?

How can I effectively use 'yup' for validation in my project?

You can use 'yup' to create schemas for validating data in JavaScript. It provides a fluent API for defining validation rules.

Can you give me an example of a simple validation schema?

Sure! Here's a basic example:

import * as yup from 'yup';

const schema = yup.object().shape({
  name: yup.string().required(),
  age: yup.number().positive().integer().required(),
});

This schema requires a 'name' as a string and 'age' as a positive integer.

How do I validate data against this schema?

You can use the validate method like this:

schema.validate({ name: 'John', age: 30 })
  .then(function(value) {
    console.log('Valid!', value);
  })
  .catch(function(err) {
    console.log('Validation error:', err);
  });

What if the validation fails?

If validation fails, the catch block will execute, and you'll receive an error object detailing what went wrong.