import type { AnyFunction } from '../mod.ts';
export interface ThrottleOptions {
    leading?: boolean;
    trailing?: boolean;
}
/**
 * Creates a throttled function that only invokes func at most once per every wait milliseconds.
 * @param fn Function.
 * @param timeout Timeout in milliseconds.
 * @param options Options.
 * @returns Throttled function.
 */
export declare function throttle<T extends AnyFunction>(fn: T, timeout?: number, { leading, trailing }?: ThrottleOptions): (...args: Parameters<T>) => void;