import { Watcher } from "./watcher";
import { ID } from "../runtime/runtime";
export declare class SystemWatcher extends Watcher {
    timers: {
        [key: string]: {
            timer: any;
            prev: Date | undefined;
            tick: number;
        };
    };
    getTime(changes: any[], timer: ID, tick: number, date?: Date): Date;
    setup(): void;
}