Looks like a really good idea. I've faced this problem before. I've even posted a question in Hasnode itself do decide a framework ( Loopback vs FeathersJS )
It's the same points I looked before deciding. However, one more I noticed is the issue open to close timing, no. of questions in StackOverflow, backlinks to that repo or their official docs. If you can include those it would be great.
However, I was confused on what to search on your site, SearchLibs. For example, Loopback and Feathers are the top rest API framework in NodeJS. It tried searching "rest node", "rest framework js", no results contain Loopback or Feathers, not even ExpressJS!!
I tried searching some libraries with exact names, like Cheerio a popular framework for parsing HTML in node js. The result I got is: github.com/DefinitelyTyped/DefinitelyTyped it doesn't even contain a word Cheerio and it was flagged as old. Does old have a low ranking? I think the search algorithm needs some changes