$ npm install gofur --save-dev

$ npm install istanbul --save-dev

-c cache            The path to a directory that will be used to store temporary
                    files, including code coverage reports. You should probably
                    make sure that the contents of this directory are ignored
                    with a .gitignore file
-t test-file        The entry point for your mocha tests
-p port             The port for running the test HTTP server, defaulted to 8001
-b browser          A colon-separated list of
                    `(saucelabs|selenium):browserName:browserVerion:platform`
-s path-to-script   Optional path to a script that will be run before the browser
                    tests. This script will then be killed after the tests. This
                    script can be used to set up fixtures.

$ node_modules/gofur/scripts/browser-coverage/test.js -c cache -t test/index.js
$ node_modules/istanbul/lib/cli.js report --dir cache/coverage/browser --root cache/coverage/browser lcov
You can then open coverage/browser/lcov-report/index.html in any browser to view the code coverage report

$ node_modules/istanbul/lib/cli.js check-coverage --lines 100 --function 100 --statements 100 --branches 100 cache/coverage/browser/coverage.json

$ node_modules/gofur/scripts/browser-coverage/test.js -c cache -t test/index.js -g reg-ex

$ node_modules/gofur/scripts/browser-coverage/serve.js -c cache -t test/index.js
Use any browser to visit http://127.0.0.1:8001/index.html
And you can filter the tests, e.g. http://127.0.0.1:8001/index.html?grep=reg-ex

$ node_modules/gofur/scripts/browser/test.js -c cache -t test/index.js

$ node_modules/gofur/scripts/browser/test.js -c cache -t test/index.js -g reg-ex

$ node_modules/gofur/scripts/browser/test.js -c cache -t test/index.js -b selenium:chrome

$ node_modules/gofur/scripts/browser/test.js -c cache -t test/index.js -b selenium:firefox