import { isBefore as dateFnsIsBefore, parseISO } from 'date-fns'; import isString from '../../utils/isString'; export default function isBefore(date: Date | string, dateToCompare: Date | string) { const dayOne = isString(date) ? parseISO(date) : date; const dayTwo = isString(dateToCompare) ? parseISO(dateToCompare) : dateToCompare; return dateFnsIsBefore(dayOne, dayTwo); }