Method appendFile

lib/internal/vfs/file_handle.js:313–318

* Appends data to the file. * @param {Buffer|string} data The data to append * @param {object} [options] Options * @returns {Promise }

(data, options)

   * @returns {Promise<void>}
   */
  async appendFile(data, options) {
    this.#checkClosed('appendFile');
    const buffer = typeof data === 'string' ?
      Buffer.from(data, options?.encoding) : data;
    await this.write(buffer, 0, buffer.length, null);
  }

  readableWebStream() {
    throw new ERR_METHOD_NOT_IMPLEMENTED('readableWebStream');