How to find which version of Tern is integrated with Firefox's Scrachpad?

First let me thank you for the amazing work you’ve done for Tern.
Some functions of Tern like Jump to definition by alt-. don’t work is Scratchpad of Firefox V. 37. Is it related to an older version of Tern and if yes, how can it be updated without updating FF?

I don’t know much about Scratchpad, but if you can get at the tern module, it has a version property. Or if you can get at the source code, find tern.js and see what version it lists.

Alt-. has been in the package from the beginning though, so this is probably not a version problem.