export type TimerOptions = {
    delay?: number;
    disabled?: boolean;
    /** Called on each interval tick.  Returned value is used to update store value, defaulting to current Date */
    onTick?: () => any;
};
/**
 * Subscribable timer store
 */
export default function timerStore<T = any>(options?: TimerOptions): {
    subscribe: (this: void, run: import("svelte/store").Subscriber<T>, invalidate?: (value?: T) => void) => import("svelte/store").Unsubscriber;
    start: () => void;
    stop: () => void;
    isRunning: () => boolean;
    getDelay: () => number;
    setDelay: (value: number) => void;
};