There is currently no way of configuring Guard::Jasmine to skip specific files from generating the coverage.
A possible way to add this would be to add something like a coverage_skip
option that contains a regex to check it as a preconodition in the coverage tilt template:
return data if file =~ ENV['COVERAGE_SKIP']
Since we do not have access to the Guard::Jasmine options, we need to set it as an environment variable in the server process.
A pull request is heartly welcome ;)