export type Beeper = (callback?: () => void) => void;
declare global {
    interface Window {
        webkitAudioContext: {
            new (): AudioContext;
        };
    }
}
export declare function createBeeper(duration?: number, type?: OscillatorType): Beeper;
export declare function useBeeper(duration?: number, type?: OscillatorType): Beeper;