/**
 * @name startOfYesterday
 * @category Day Helpers
 * @summary Return the start of yesterday.
 * @pure false
 *
 * @description
 * Return the start of yesterday.
 *
 * @returns The start of yesterday
 *
 * @example
 * // If today is 6 October 2014:
 * const result = startOfYesterday()
 * //=> Sun Oct 5 2014 00:00:00
 */
export declare function startOfYesterday(): Date;