/**
 * Debounce a callback with an optional delay.
 * @param cb - The callback that will be invoked.
 * @param delay - A delay after which the callback will be invoked.
 * @returns The debounced callback.
 */
export declare function debounce<Args extends any[]>(cb: (...args: Args) => void, delay?: number): (...args: Args) => void;