constructNow

import { constructNow, isSameDay } from 'date-fns'

function isToday<DateType extends Date>(
  date: DateType | number | string,
): boolean {
  // If we were to use `new Date()` directly, the function would  behave
  // differently in different timezones and return false for the same date.
  return isSameDay(date, constructNow(date));
}