I'm currently working on quite a big react.js system/project with a lot of reused components and there are no unit tests or documentation whatsoever. My worries starts when I change (fix) one of these components for one specific use case and in 3 other places which I don't know at the time component broke down.
It would be amazing to have some tool which tells me, in which all places is some specific component use, so I can test it in all cases.
Do you have any recommendations?