type Callback = () => void;
/**
 * Invokes the provided callback on the next available frame after the stack
 * frame is empty.
 *
 * At most one callback per frame is invoked, and the callback may be delayed
 * multiple frames until the page is idle.
 *
 * TODO: return a token from this method that allows you to cancel the callback
 * (otherwise the callback list may increase without bound).
 */
export declare const requestIdleCallback: (callback: Callback) => void;
export {};