I am attempting to build a custom third party reporter and I am using the simple example presented on this page : https://github.com/mochajs/mocha/wiki/Third-party-reporters. However, I cannot find any wiki or a simple explanation of how everything works.
Questions :

1. Is the "test" parameter in the runner.on function a .js file containing the tests?
2. If test is not the file containing the tests, how can I supply one?
3. How do I run this reporter? Can I do something similar to "mocha testreporter.js" and it would know to check my test files?
4. How do I include my test reporter in my existing project? Do I need to add it in the package.json? I do not want to publish it on npm, only to use it in my project.

What I am trying to achieve:

-> I need a simple custom test reporter which, based on my tests, can give me back the number of tests which have passed/failed / or a percentage. My plan would be to render my own html based on these results. For this reason, I am not interested in the already existing html test reporters, as I do not want to include error messages etc.