Function appendFile

lib/internal/fs/promises.js:2118–2131

(path, data, options)

}

async function appendFile(path, data, options) {
  options = getOptions(options, { encoding: 'utf8', mode: 0o666, flag: 'a' });
  parseFileMode(options.mode, 'mode', 0o666);

  const h = vfsState.handlers;
  if (h !== null) {
    checkAborted(options.signal);
    const promise = h.appendFile(path, data, options);
    if (promise !== undefined) { await promise; return; }
  }
  options = copyObject(options);
  options.flag ||= 'a';
  return writeFile(path, data, options);
}

async function readFile(path, options) {
  const h = vfsState.handlers;