It would be really nice if you didn't have to go to JS mode to update or remove extensions as it would remove the risk of re-arranging all of your code. And if you switch while there are errors, (be it type or syntax errors) then it won't let you switch back without you fixing them which increases the risk of ruining your layout. Maybe you can add the update and delete buttons next to the title like this:
It would be really nice if you didn't have to go to JS mode to update or remove extensions as it would remove the risk of re-arranging all of your code. And if you switch while there are errors, (be it type or syntax errors) then it won't let you switch back without you fixing them which increases the risk of ruining your layout. Maybe you can add the update and delete buttons next to the title like this: