/**
 * Throttles a function and delays its execution, so it's only called at most
 * once within a given time period.
 *
 * @param {Function} fn The function to throttle.
 * @param {number} wait The amount of time that must pass before the function can be called again.
 * @return {Function} The throttled function.
 */
export declare const throttle: (fn: Function, wait: number) => (this: any) => void;