export interface PrivateFileExclusiveAsyncOptions {
    timeoutMs?: number;
    onWait?: () => void;
}
/** Wait without blocking other users of the same file in this process. */
export declare function runPrivateFileExclusiveAsync<Result>(lockPath: string, action: () => Result | PromiseLike<Result>, options?: PrivateFileExclusiveAsyncOptions): Promise<Result>;
export declare function runPrivateFileExclusive<Result>(lockPath: string, action: () => Result): Result;
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