export declare function useKeyedMutex(): {
    runExclusive: <T>(key: string | number, fn: () => Promise<T> | T) => Promise<T>;
    lock: (key: string | number) => Promise<() => void>;
    unlock: (key: string | number) => void;
    tryLock: (key: string | number) => (() => void) | null;
    runExclusiveOrThrow: <T>(key: string | number, fn: () => Promise<T> | T, errorMessage?: string) => Promise<T>;
    isLocked: (key: string | number) => boolean;
    clearLock: (key: string | number) => void;
};