/**
 * @name getUnixTime
 * @category Timestamp Helpers
 * @summary Get the seconds timestamp of the given date.
 *
 * @description
 * Get the seconds timestamp of the given date.
 *
 * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
 *
 * @param date - The given date
 *
 * @returns The timestamp
 *
 * @example
 * // Get the timestamp of 29 February 2012 11:45:05 CET:
 * const result = getUnixTime(new Date(2012, 1, 29, 11, 45, 5))
 * //=> 1330512305
 */
export declare function getUnixTime<DateType extends Date>(
  date: DateType | number | string,
): number;
