Yes I use js on the frontend just as a habit and since I have a lot of boilerplate code in js I can start quickly.

This is just intended to be a example of my previous package (spider) 100% in Go this time.

Maybe an alternative would be to track a single repository through a time range. To see his position in a graph over time.

If there is enough people interested in this project, it would be interesting to have, like you said, a rank based on time and some other data (stars, forks, issues,..) but that would be another story I guess ^^