import { FC } from "react";
import { MatrixRTCSession } from "matrix-js-sdk/src/matrixrtc";
interface CallDurationProps {
    delta: number;
}
/**
 * A call duration counter.
 */
export declare const CallDuration: FC<CallDurationProps>;
interface SessionDurationProps {
    session: MatrixRTCSession | undefined;
}
/**
 * A call duration counter that automatically counts up, given a matrixRTC session
 * object.
 */
export declare const SessionDuration: FC<SessionDurationProps>;
export {};
