declare function getCurrentFocusSource(): any;
declare function getUsedFocusSource(source: any): any;
declare function lockFocusSource(source: any): void;
declare function unlockFocusSource(): void;
declare function disengage(): void;
declare function engage(): {
    used: typeof getUsedFocusSource;
    current: typeof getCurrentFocusSource;
    lock: typeof lockFocusSource;
    unlock: typeof unlockFocusSource;
};
declare const _default: {
    engage: typeof engage;
    disengage: typeof disengage;
};
export default _default;