/**
 * Create a path if it does not exist.
 *
 * @param abspath
 * @since 0.1.0
 * @author Caique Araujo <caique@piggly.com.br>
 */
export declare function createPath(abspath: string): void;
/**
 * Check if a file exists.
 *
 * @param filename
 * @returns True if the file exists, false otherwise.
 * @since 0.1.0
 * @author Caique Araujo <caique@piggly.com.br>
 */
export declare function exists(filename: string): boolean;
/**
 * Read a file.
 *
 * @param filename
 * @returns The file data.
 * @since 0.1.0
 * @author Caique Araujo <caique@piggly.com.br>
 */
export declare function readFile(filename: string): Promise<Buffer>;
/**
 * Remove a file.
 *
 * @param filename
 * @returns The filename.
 * @since 0.1.0
 * @author Caique Araujo <caique@piggly.com.br>
 */
export declare function removeFile(filename: string): Promise<string>;
/**
 * Write data to a file.
 *
 * @param filename
 * @param data
 * @returns The filename.
 * @since 0.1.0
 * @author Caique Araujo <caique@piggly.com.br>
 */
export declare function writeFile(filename: string, data: Buffer | string): Promise<string>;