import { string, date, array, object } from 'yup';

const schema = object().shape({
  name: string().required(),
  email: string().email().lowercase().required(),
  dateOfBirth: date().required().max(new Date(2000, 1, 1)),
  knownLanguages: array().of(string()).min(1).max(3, 'Really ? Only 3 are enough'),
  skills: object().shape({
    personal: array().of(string()).min(1).required(),
    professional: array().of(string()).min(1).required(),
  }),
});

await schema.validate(user);