adding in a qmldir file a JavaScript file that imports a registered type prevents application from running

If a JavaScript file is added to a qmldir file and that JS file imports a module, application will get stuck before showing the main qml file.

How to reproduce:
create a library that uses qmlRegisterType, create a JS file and import previous registered type, add JS file to qmldir, an application that uses a qml type in that library won't run.