Source
bool hasInExportedNamespace(Element element) {
Element found = _exportedNamespace.get(element.name);
if (found == null) return false;
if (found == element) return true; // this checks more than just the name
// Fix for #587, comparison between elements isn't reliable on windows.
// for some reason. sigh.
return found.runtimeType == element.runtimeType &&
found.nameOffset == element.nameOffset;
}