Method appendFile

lib/internal/vfs/provider.js:320–331

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

(path, data, options)

   * @returns {Promise<void>}
   */
  async appendFile(path, data, options) {
    if (this.readonly) {
      throw createEROFS('open', path);
    }
    const flag = options?.flag ?? 'a';
    const handle = await this.open(path, flag, options?.mode);
    try {
      await handle.writeFile(data, options);
    } finally {
      await handle.close();
    }
  }

  /**
   * Appends to a file synchronously.