export type ScheduledCallback = () => void | Promise<void>;
export interface Scheduler {
    schedule(key: string, delayMs: number, cb: ScheduledCallback): void;
    cancel(key: string): void;
}
export declare class TimerScheduler implements Scheduler {
    private readonly timers;
    schedule(key: string, delayMs: number, cb: ScheduledCallback): void;
    cancel(key: string): void;
}
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