/** Tap into the values of an iterator. `func` does not modify values passed to it as it's return value is unused. */
export declare class TapIterator<T> implements IterableIterator<T> {
    protected iterator: Iterator<T>;
    protected func: (value: T) => any;
    constructor(iterator: Iterator<T>, func: (value: T) => any);
    [Symbol.iterator](): IterableIterator<T>;
    next(...args: any[]): IteratorResult<T>;
}
export default TapIterator;
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