g1 and mapviewer is not working together since gramex 1.50

Summary

g1 and mapviewer is not working together since gramex version 1.50

Steps to reproduce

1. Import g1
2. Import mapviewer
3. Try accessing g1 (eg: g1.url.parse(location.href)). This throws error

Otherwise

1. Import mapviewer
2. Import g1
3. Now g1.mapviewer is not callable

What is the expected correct behavior?

Both should work irrespective of import order

If required, @sharabh.singhi Can help to reproduce this.