Function tryFile

lib/internal/modules/cjs/loader.js:591–598

* Check if the file exists and is not a directory if using `--preserve-symlinks` and `isMain` is false or * `--preserve-symlinks-main` and `isMain` is true , keep symlinks intact, otherwise resolve to the absolute realpath. * @param {string} requestPath The path to the file to load. * @param {boo

(requestPath, isMain)

 * @returns {string|undefined}
 */
function tryFile(requestPath, isMain) {
  const rc = _stat(requestPath);
  if (rc !== 0) { return; }
  if (getOptionValue(isMain ? '--preserve-symlinks-main' : '--preserve-symlinks')) {
    return path.resolve(requestPath);
  }
  return toRealPath(requestPath);
}

/**
 * Given a path, check if the file exists with any of the set extensions.