Yup Validation 3

schema.js

Yup.object().shape({
  email: Yup.string().email('Invalid email address').required('Email is required!'),
  username: Yup.string().required('This man needs a ${path}').when('email', (email, schema) => {
    if (email === '[email protected]') { 
      return schema.label('papidipupi').min(10);
    }
    return schema.label('babidibiba');
  }).test('is-zigzagging', '${path} is not zigzagging', value => value === 'zigzagging'),
});