Function openWindowDialog

src/open-window-dialog.js:18–34

(win, url, target, opt_features)

 * @return {?Window}
 */
export function openWindowDialog(win, url, target, opt_features) {
  // Try first with the specified target. If we're inside the WKWebView or
  // a similar environments, this method is expected to fail by default for
  // all targets except `_top`.
  let res;
  try {
    res = win.open(url, target, opt_features);
  } catch (e) {
    dev().error('DOM', 'Failed to open url on target: ', target, e);
  }

  // Then try with `_top` target.
  if (!res && target != '_top' && !includes(opt_features || '', 'noopener')) {
    res = win.open(url, '_top');
  }
  return res;
}