Function copyFile

lib/fs.js:3642–3658

* Asynchronously copies `src` to `dest`. By * default, `dest` is overwritten if it already exists. * @param {string | Buffer | URL} src * @param {string | Buffer | URL} dest * @param {number} [mode] * @param {(err?: Error) => any} callback * @returns {void}

(src, dest, mode, callback)

 * @returns {void}
 */
function copyFile(src, dest, mode, callback) {
  if (typeof mode === 'function') {
    callback = mode;
    mode = 0;
  }

  const h = vfsState.handlers;
  if (h !== null && vfsVoid(h.copyFile(src, dest, mode), callback)) return;

  src = getValidatedPath(src, 'src');
  dest = getValidatedPath(dest, 'dest');
  callback = makeCallback(callback);

  const req = new FSReqCallback();
  req.oncomplete = callback;
  binding.copyFile(src, dest, mode, req);
}

/**
 * Synchronously copies `src` to `dest`. By