export declare const worker = "(function metronomeWorkerSetup() {\n  function ticker() {\n    self.postMessage('tick');\n  }\n  self.onmessage = function (event) {\n    const [data, time] = event.data;\n    switch (data) {\n      case 'start':\n        setTimeout(ticker, time);\n        break;\n      default:\n        break;\n    }\n  };\n})()";
/**
 * Delay for a @see ms amount of time
 * @param ms -- time in milliseconds
 */
export declare function sleep(ms: number): Promise<void>;
export declare function workerSleep(ms: number): Promise<void>;
/**
 * Debounce Fn - Function to limit the number of executions of the passed in
 * function in a given time duration
 * @param fn Function to be called
 * @param delay time by which the function execution has to be delayed
 * @returns {void}
 */
export declare function debounce<T extends (...args: any) => any>(fn: T, delay?: number): () => void;