import { AsyncSequence } from "../../sequency";
export declare class Plus {
    /**
     * Appends the given `element` to the end of the sequence and returns a new sequence.
     *
     * @param {T} element
     * @returns {AsyncSequence<T>}
     */
    plus<T>(this: AsyncSequence<T>, element: T): AsyncSequence<T>;
    /**
     * Appends the given array to the end of the sequence and returns a new sequence.
     *
     * @param {T[]} other
     * @returns {AsyncSequence<T>}
     */
    plus<T>(this: AsyncSequence<T>, other: T[]): AsyncSequence<T>;
    /**
     * Appends the given sequence to the end of the sequence and returns a new sequence.
     *
     * @param {AsyncSequence<T>} other
     * @returns {AsyncSequence<T>}
     */
    plus<T>(this: AsyncSequence<T>, other: AsyncSequence<T>): AsyncSequence<T>;
}