export declare function ensureDir(dirPath: string): Promise<void>;
export declare function exists(filePath: string): Promise<boolean>;
export declare function readJsonFile<T>(filePath: string): Promise<T>;
export declare function writeJsonFile(filePath: string, value: unknown): Promise<void>;
export declare function appendJsonArrayItem<T>(filePath: string, value: T): Promise<void>;
export declare function readTextFile(filePath: string): Promise<string>;
export declare function writeTextFile(filePath: string, value: string): Promise<void>;
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