export interface UseDeviceListOptions {
    /**
     * Callback when devices are updated
     */
    onUpdated?: (devices: MediaDeviceInfo[]) => void;
    /**
     * Request for permissions immediately if it's not granted,
     * otherwise label and deviceIds could be empty
     *
     * @defaultValue false
     */
    requestPermissions?: boolean;
    /**
     * Request for types of media permissions
     *
     * @defaultValue { audio: true, video: true }
     */
    constraints?: MediaStreamConstraints;
}
export interface UseDeviceListReturns {
    /**
     * List of all devices
     */
    devices: MediaDeviceInfo[];
    /**
     * a getter to get all video inputs
     */
    videoInputs: MediaDeviceInfo[];
    /**
     * a getter to get all audio inputs
     */
    audioInputs: MediaDeviceInfo[];
    /**
     * a getter to get all audio outputs
     */
    audioOutputs: MediaDeviceInfo[];
    /**
     * a boolean to check if permission is granted
     */
    isPermissionGranted: boolean;
    /**
     * a function to check if the browser supports the API
     */
    isSupported: boolean;
    /**
     * a function to request for permissions to access the media devices
     */
    ensurePermission(): Promise<boolean>;
    /**
     * a function to update the list of devices
     */
    update(): Promise<void>;
}
/**
 * A React Hook that returns a list of devices that are currently connected.
 */
export declare function useDeviceList(options?: UseDeviceListOptions): UseDeviceListReturns;