import { krl } from "krl-stdlib";
import { PicoEvent, PicoFramework } from "pico-framework";
interface ScheduledEvent_base {
    id: string;
    event: PicoEvent;
}
interface ScheduledEvent_at extends ScheduledEvent_base {
    type: "at";
    time: number;
}
interface ScheduledEvent_repeat extends ScheduledEvent_base {
    type: "repeat";
    timespec: string;
}
export type ScheduledEvent = ScheduledEvent_at | ScheduledEvent_repeat;
type ScheduleJob = (timespec: string, handler: () => void) => {
    handler: () => void;
    cancel: () => void;
};
type SetTimeout = (handler: () => void, time: number) => void;
type ClearTimeout = (handle: any) => void;
export declare class Scheduler {
    private currTimeout;
    private futures;
    private crons;
    private scheduleJob;
    private setTimeout;
    private clearTimeout;
    private now;
    constructor(scheduleJob?: ScheduleJob, setTimeout?: SetTimeout, clearTimeout?: ClearTimeout, now?: () => number);
    addFuture(id: string, time: number, handler: () => void): void;
    addCron(id: string, timespec: string, handler: () => void): void;
    remove(id: string): void;
    update(): void;
    private onTime;
}
export declare function initScheduleModule(pf: PicoFramework): {
    module: krl.Module;
    start(): Promise<unknown>;
};
export {};