Jasmine JavaScript unit tests generate LCOV report

We are using Jasmine for our JavaScript unit tests. We have a SpecRunner.html file to run the tests. Does there exist a tool to which I can pass the path to SpecRunner.html and the path to the directory of JavaScript (not the specs) files and it would generate a LCOV report. For example, something like this:

phantomjs jasmine_lcov.js SpecRunner.html WebContent/js