Function ftruncateSync

lib/fs.js:1344–1354

* Synchronously truncates the file descriptor. * @param {number} fd * @param {number} [len] * @returns {void}

(fd, len = 0)

 * @returns {void}
 */
function ftruncateSync(fd, len = 0) {
  validateInteger(len, 'len');

  const h = vfsState.handlers;
  if (h !== null) {
    const result = h.ftruncateSync(fd, len < 0 ? 0 : len);
    if (result !== undefined) return;
  }

  binding.ftruncate(fd, len < 0 ? 0 : len);
}

function lazyLoadCp() {
  if (cpFn === undefined) {