When I create something (software) like this, I never have any visitors or contributors/co-posters. How does this "board" with only 3 threads get so many responses? Must be an outlet of some discord/irc channel (which?).
As for the topic, I like JS better than Dart, which seems to get in my way any way it can. JS on the server though, why would you do that to yourself? I personally didn't migrate from PHP to Go in 2013 so I can write server stuff in yet another not well performing language. If I wanted that, I could've stayed with PHP or went to Ruby. Symfony tries to mimic Rails in features, while trying to be as complicated as Java, without the performance and all the bad stuff attached to it. Or rather Laravel is now the Rails pendant while Symfony is the same for Spring (boot).
Meanwhile many Go "frameworks", more like routers, are inspired by Express. And to my knowledge at least, the first isomorphic frameworks were in the JS ecosystem.