import { AsyncSequence } from "../../sequency";
export declare class MaxWith {
    /**
     * Returns the maximum element of the sequence by evaluating the given `compare`
     * function or `null` if sequence is empty.
     *
     * @param {(a: T, b: T) => Promise<number> | number} compare
     * @returns {Promise<T | null>}
     */
    maxWith<T>(this: AsyncSequence<T>, compare: (a: T, b: T) => Promise<number> | number): Promise<T | null>;
}