Receive a string and verify if it is a valid date with date-fns

Try parse with locale options like this:

import { parse, isValid, format } from 'date-fns';
import { enGB } from 'date-fns/locale';

const parsedDate = parse('29/10/1989', 'P', new Date(), { locale: enGB });
const isValidDate = isValid(parsedDate);
const formattedDate = format(parsedDate, 'dd-MM-yyyy');