import { LazyIterator } from './iterator.cjs';

/**
 * A basic implementation of a lazy iterator, which wraps an existing iterator.
 */
declare class BasicLazyIterator<T, TReturn = any, TNext = undefined> extends LazyIterator<T, TReturn, TNext> {
    source: Iterator<T, TReturn, TNext>;
    constructor(source: Iterator<T, TReturn, TNext>);
    next(...args: [] | [TNext]): IteratorResult<T, TReturn>;
}
declare module "./iterator" {
    interface LazyIteratorFactory {
        /**
         * Creates a lazy iterator from an existing iterator or iterable.
         * @param source the source iterable
         */
        from<T>(source: Iterable<T>): LazyIterator<T, any, undefined>;
        /**
         * Creates a lazy iterator from an existing iterator or iterable.
         * @param source the source iterator
         */
        from<T, TReturn, TNext>(source: Iterator<T, TReturn, TNext>): LazyIterator<T, TReturn, TNext>;
    }
}

export { BasicLazyIterator };