Method appendFileSync

lib/internal/vfs/file_system.js:282–285

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

(filePath, data, options)

   * @param {object} [options] Options
   */
  appendFileSync(filePath, data, options) {
    const providerPath = this.#toProviderPath(filePath);
    this[kProvider].appendFileSync(providerPath, data, options);
  }

  /**
   * Reads directory contents synchronously.