iteragain/dist/types/spy.d.ts

Javascript Iterable/Iterator/Generator-function utilities.

import type { IterSource, IteratorOrIterable, Tuple } from './types';
/**
 * Returns a 2 length tuple containing the head of the input `iterator` and a new iterator containing the same
 * values as `iterator`.
 */
export declare function spy<T extends IteratorOrIterable<unknown>, TAhead extends number = 1>(ahead?: TAhead): (arg: T) => [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>];
export declare function spy<T extends IteratorOrIterable<unknown>, TAhead extends number = 1>(iterator: T, ahead?: TAhead): [Tuple<IterSource<T>, TAhead>, IterableIterator<IterSource<T>>];
export default spy;
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