import fsSync from 'fs';
export declare function readFileSecure(filePath: string, allowedDirectory: string, encoding?: BufferEncoding, allowedOutputDirectory?: string): Promise<string>;
export declare function writeFileSecure(filePath: string, content: string, allowedDirectory: string, encoding?: BufferEncoding, allowedOutputDirectory?: string): Promise<void>;
export declare function appendToFileSecure(filePath: string, content: string, allowedDirectory: string, encoding?: BufferEncoding, allowedOutputDirectory?: string): Promise<void>;
export declare function readDirSecure(dirPath: string, allowedDirectory: string, options?: {
    withFileTypes?: boolean;
}): Promise<fsSync.Dirent[]>;
export declare function statSecure(filePath: string, allowedDirectory: string): Promise<fsSync.Stats>;
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