Rewrite the parsing

[Ganbin]

Is your feature request related to a problem? Please describe.
The way the parsing works is that it need to execute all the method in order to only know the list of tests. That mean it need to execute all the tests only to get a list.

Describe the solution you'd like
Rewrite the way the component work in order to not have to execute all the tests

Describe alternatives you've considered
js.component is a very good alternative to write unit test (I actually use it instead of my own component) but is not free.

Additional context
It would help to solve some existing issue and some feature request that has been there for too long now. (sorry)