import { PipeFn } from '../internalTypes';
/**
 * Append values onto the end of an iterable.
 * @param iterablesToAppend - the iterables in the order to be appended.
 * @returns
 */
export declare function opAppendAsync<T>(...iterablesToAppend: (AsyncIterable<T> | Iterable<T>)[]): (iter: AsyncIterable<T> | Iterable<T>) => AsyncIterable<T>;
/**
 * Append values onto the end of an iterable.
 * @param iterablesToAppend - the iterables in the order to be appended.
 * @returns
 */
export declare function opAppendSync<T>(...iterablesToAppend: Iterable<T>[]): (iter: Iterable<T>) => Iterable<T>;
export declare function opAppend<T>(...iterablesToAppend: Iterable<T>[]): PipeFn<T, T>;
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