/**
 * Optimized File I/O
 *
 * Uses Bun.file() / Bun.write() when running on Bun for native performance.
 * Falls back to Node.js fs module on Node.
 *
 * Why: Bun's fs module is a separate reimplementation that does NOT delegate
 * to Bun.file() internally. Using Bun.file().json() avoids the intermediate
 * string allocation that fs.readFile + JSON.parse requires.
 */
/** Read a file as UTF-8 text */
export declare function readText(filePath: string): Promise<string>;
/** Read a JSON file, parsed */
export declare function readJSON<T = any>(filePath: string): Promise<T>;
/** Write UTF-8 text to a file */
export declare function writeText(filePath: string, content: string): Promise<void>;
/** Write an object as JSON to a file */
export declare function writeJSON(filePath: string, data: unknown, indent?: number): Promise<void>;
/** Write raw bytes to a file */
export declare function writeBytes(filePath: string, data: Buffer | Uint8Array): Promise<void>;
/** Read raw bytes from a file */
export declare function readBytes(filePath: string): Promise<Buffer>;
/** Read a file as UTF-8 text (sync) */
export declare function readTextSync(filePath: string): string;
/** Read a JSON file, parsed (sync) */
export declare function readJSONSync<T = any>(filePath: string): T;
/** Write UTF-8 text to a file (sync) */
export declare function writeTextSync(filePath: string, content: string): void;
/** Write an object as JSON to a file (sync) */
export declare function writeJSONSync(filePath: string, data: unknown, indent?: number): void;
/** Check if a file exists */
export declare function fileExists(filePath: string): boolean;
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