如何在业力上使用笑话？

I want to use jest framework. So in karma.conf file i have included jest in the framework field. But it is giving error "WARN [reporter]: Can not load "jest", it is not registered!" when i run karma start. I have included the jest package( "jest": "~0.1.39", "jest-cli": "~0.4.1") in the dependencies of package.json file.I want to use jest framework. So in karma.conf