Yes, Ruby was very much "overrepresented" in the early days of github, so the decline in its growth relative to other languages is fairly normal sounding, rather than indicative of its actual decline.
Also, Javascript is something that is going to get checked in to lots of web projects one way or another. I wonder if they weed out duplicate copies of, say, jQuery.
I wonder if they weed out duplicate copies of, say, jQuery.
These stats have not in my experience been very reliable at all, and tend to massively overcount javascript. I've had a few projects tagged 'javascript' when in fact they were web projects and just had some common js libraries like jquery included (ruby and golang projects).
Also, Javascript is something that is going to get checked in to lots of web projects one way or another. I wonder if they weed out duplicate copies of, say, jQuery.