export interface AtomicJsonFileOptions {
    rootLabel: string;
    directoryLabel: string;
    fileLabel: string;
    ensureDirectory: (directory: string) => void;
    fsyncNewRootParent?: boolean;
    fsyncNewDirectoryParent?: boolean;
}
export interface AtomicPrivateJsonReplaceOptions {
    temporaryPath: string;
    beforeRename?: () => void;
    cleanupTemporary: (temporaryPath: string) => void;
}
/** Atomically replace one private JSON record without following symlinks. */
export declare function atomicSaveJsonFile(filePath: string, value: unknown, options: AtomicJsonFileOptions): void;
/** Replace one private JSON file after its caller validates path policy. */
export declare function atomicReplacePrivateJsonFile(filePath: string, value: unknown, options: AtomicPrivateJsonReplaceOptions): void;
/** Read one regular private JSON record without following its final path. */
export declare function readJsonFileNoFollow(filePath: string, label: string): unknown;
export declare function assertRealDirectory(value: string, label: string): void;
export declare function fsyncDirectory(directory: string): void;
export declare function isNodeError(error: unknown, code?: string): error is NodeJS.ErrnoException;