export declare function withKeyedLock<T>(key: string, operation: () => Promise<T>): Promise<T>;
export declare function withFileLock<T>(key: string, operation: () => Promise<T>, options: {
    lockDirectory: string;
    syncLockFile?: boolean;
}): Promise<T>;
export declare function withWikiFileLock<T>(wikiRoot: string, key: string, operation: () => Promise<T>, options?: {
    syncLockFile?: boolean;
}): Promise<T>;
export declare function keyedLockCount(): number;
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