import Future from './Future';
export type TimerData = {
	last: number;
	interval: number;
	iterations: number;
};
export type TimerSubscriber = (_data: TimerData) => any;
export declare class Timer extends Future<TimerData> implements TimerData {
	last: number;
	interval: number;
	timeout: ReturnType<typeof setTimeout>;
	iterations: number;
	subscribers: Set<TimerSubscriber>;
	guard: TimerData;
	constructor(interval: bigint | number | unknown);
	call(): Promise<void>;
	check: (recheck?: boolean) => void;
	clear: () => void;
	reset(now?: number): void;
	subscribe(callback: TimerSubscriber): () => boolean;
	then<TResult1 = void, TResult2 = never>(
		onfulfilled?:
			| ((value: TimerData) => TResult1 | PromiseLike<TResult1>)
			| null
			| undefined,
		onrejected?:
			| ((reason: any) => TResult2 | PromiseLike<TResult2>)
			| null
			| undefined
	): Future<TResult1 | TResult2>;
}
export default Timer;