import { ExtendedIterable } from "./iterable";
import { Retainer, DistinctEqualFn, GroupFn } from "../core";
import { IterableTuple } from "./iterable-tuple";
import { IterableTypeReferenceMap } from "./reference-map-type";
import { TC39SyncIteratorHelpers } from "../tc39/sync";
export declare class ExtendedIterableImplementation<T> extends TC39SyncIteratorHelpers<T> implements ExtendedIterable<T> {
    protected referenceMap: IterableTypeReferenceMap;
    private readonly iterable;
    constructor(iterable: Iterable<T>, referenceMap: IterableTypeReferenceMap);
    drain(): boolean;
    hasAny(): boolean;
    retain(retainer?: Retainer<T>): ExtendedIterable<T>;
    union<O>(other: Iterable<O>): ExtendedIterable<T | O>;
    mask(maskIterable: Iterable<boolean>): ExtendedIterable<T>;
    maskReversible(maskIterable: Iterable<boolean>, reverse?: boolean): ExtendedIterable<T>;
    skip(count: number): ExtendedIterable<T>;
    distinct(equalityFn?: DistinctEqualFn<T>): ExtendedIterable<T>;
    group(fn: GroupFn<T, this, this>): ExtendedIterable<ExtendedIterable<T>>;
    tap(fn: (value: T) => void): ExtendedIterable<T>;
    toTuple<S extends number>(size: S): IterableTuple<T, S>;
    toIterable(): Generator<T, void, unknown>;
    [Symbol.iterator](): Iterator<T, any, undefined>;
}