I think `brackets.metadata` gets pulled in elsewhere, probably from a config(.json?) file.  So, that variable should be ok.

Regarding `strings.APP_NAME`, I've actually accounted for this with the code I added towards the end of src/strings.js.  Specifically, as it processes the `strings2` collection, it is actually adding each transformed string value to the existing `string` collection.  As a result, any already existing Brackets code will continue to be able to reference the new strings.