import type { MutableRefObject } from 'react';
import type { Pausable } from "../use-pausable/index.cjs";
export interface UseUserMediaOptions {
    /**
     * Callback when MediaStream is ready
     */
    onStart?: (stream: MediaStream) => void;
    /**
     * Callback when MediaStream is stopped
     */
    onStop?(): void;
    /**
     * Recreate stream when deviceIds or constraints changed
     *
     * @defaultValue true
     */
    autoSwitch?: boolean;
    /**
     * MediaStreamConstraints to be applied to the requested MediaStream
     * If provided, the constraints will override videoDeviceId and audioDeviceId
     *
     * @defaultValue {}
     */
    constraints?: MediaStreamConstraints;
}
export interface UseUserMediaReturns extends Pausable {
    /**
     * The current MediaStream
     */
    stream: MutableRefObject<MediaStream | null>;
    /**
     * Whether the browser supports getUserMedia
     */
    isSupported: boolean;
}
/**
 * A React Hook that helps to manage the user media.
 */
export declare function useUserMedia(options?: UseUserMediaOptions): UseUserMediaReturns;