Django/Rails Sinatra and so on.
These frameworks do injustice to their languages :
Rails hurts Ruby, Django hurts Python, Sinatra hurts Javascript.
JavaScript has a lot to offer but in the distant future. An even then it relies on slaves building pyramids.
Go is fantastic at what it does well, which is lightweight concurrency (with a synchronous api), something that no other compiled, imperative language offers.
But I haven't spoken to a single Go developer (and I've spoken to a few) who don't hesitate to tell me how sucky it is in many, many other ways. I've heard the phrase "I'm really starting to hate Go" more than once or twice.
Is there some JS framework called Sinatra? Either you made a mistake or I'm out of the loop when it comes to the JS world.
The only Sinatra I know of is http://www.sinatrarb.com/