import Sequence from "./Sequence";
export declare class ForEachIndexed {
    /**
     * Performs the given `action` (side-effect) for each element of the sequence and passes the `index` of the current
     * element (zero-based).
     *
     * @param {(index: number, value: T) => void} action
     */
    forEachIndexed<T>(this: Sequence<T>, action: (index: number, value: T) => void): void;
}