export declare const increaseDay: (from: Date | number | string, amount: number) => Date;
/**
 *
 * @param from date,number or date string
 * @param amount 1d,1s,1h,1w,1m or 1y ,if amount is an number default seconds
 * @returns Date
 */
export declare const increaseDate: (from: Date | number | string, amount: string | number) => Date;