/// <reference types="node" />
/** Wrapped fs.readFile as Promise */
export declare function readFile(filename: string, encoding?: string): Promise<string>;
/** Reads all contents of a node file stream */
export declare function readStreamToEnd(stream: NodeJS.ReadableStream, encoding?: string): Promise<string>;
/** Wrapped fs.writeFile as Promise */
export declare function writeFile(filename: string, data: string, encoding?: string): Promise<void>;
/** Writes to a node file stream */
export declare function writeToStream(stream: NodeJS.WritableStream, data: string, encoding?: string): Promise<string>;