export interface ThrottledAsyncFunction<A extends unknown[], R> {
    (...arguments_: A): Promise<R>;
    cancel: () => void;
}
/**
 * Creates a throttled async function. Coalesces concurrent calls within the
 * `wait` window so only one underlying invocation runs; all callers in the
 * window receive the same result.
 *
 * @template A - Argument tuple type
 * @template R - Resolved value type
 * @param {(...args: A) => Promise<R>} function_ - Async function to throttle
 * @param {number} wait - Window length in milliseconds
 * @returns {ThrottledAsyncFunction<A, R>} Throttled wrapper with cancel support
 * @example
 * const fetchUser = throttleAsync(loadUser, 1000);
 */
export declare const throttleAsync: <A extends unknown[], R>(function_: (...arguments_: A) => Promise<R>, wait: number) => ThrottledAsyncFunction<A, R>;