import { AsyncSequence } from "../../sequency";
export declare class None {
    /**
     * Returns `true` if no element match the given `predicate` or if the sequence is empty
     * if no predicate is present.
     *
     * @param {(value: T) => Promise<boolean> | boolean} predicate
     * @returns {Promise<boolean>}
     */
    none<T>(this: AsyncSequence<T>, predicate?: (value: T) => Promise<boolean> | boolean): Promise<boolean>;
}