date-fns/src/isThursday/index.ts


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import toDate from '../toDate/index'
import requiredArgs from '../_lib/requiredArgs/index'

/**
 * @name isThursday
 * @category Weekday Helpers
 * @summary Is the given date Thursday?
 *
 * @description
 * Is the given date Thursday?
 *
 * ### 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 Thursday
 * @throws {TypeError} 1 argument required
 *
 * @example
 * // Is 25 September 2014 Thursday?
 * var result = isThursday(new Date(2014, 8, 25))
 * //=> true
 */
export default function isThursday(dirtyDate: Date | number): boolean {
  requiredArgs(1, arguments)

  return toDate(dirtyDate).getDay() === 4
}