import isSameDay from '../isSameDay/index.js'; import subDays from '../subDays/index.js'; /** * @name isYesterday * @category Day Helpers * @summary Is the given date yesterday? * @pure false * * @description * Is the given date yesterday? * * > ⚠️ Please note that this function is not present in the FP submodule as * > it uses `Date.now()` internally hence impure and can't be safely curried. * * ### v2.0.0 breaking changes: * * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes). * * @param {Date|Number} date - the date to check * @returns {Boolean} the date is yesterday * @throws {TypeError} 1 argument required * * @example * // If today is 6 October 2014, is 5 October 14:00:00 yesterday? * var result = isYesterday(new Date(2014, 9, 5, 14, 0)) * //=> true */ export default function isYesterday(dirtyDate) { if (arguments.length < 1) { throw new TypeError('1 argument required, but only ' + arguments.length + ' present'); } return isSameDay(dirtyDate, subDays(Date.now(), 1)); }