Languages targeting bytcode platforms are just as liable to be second-class citizens as ones targeting JavaScript.
Scala and Clojure don't support proper tail calls. Why? Because the JVM is the Java Virtual Machine! I believe there were similar issue for dynamic languages on the JVM for the longest time as well.
And now just imagine implementing a Haskell->JVM compiler. I wouldn't be surprised if that's actually more difficult than implementing a Haskell->JavaScript compiler.
So yes: with JavaScript as the target, other languages are second-class citizens. But with some bytecode, that won't probably won't change much. Knowing how these things get designed, the end result could easily be that every language including JavaScript becomes a second-class citizen.
Scala and Clojure don't support proper tail calls. Why? Because the JVM is the Java Virtual Machine! I believe there were similar issue for dynamic languages on the JVM for the longest time as well.
And now just imagine implementing a Haskell->JVM compiler. I wouldn't be surprised if that's actually more difficult than implementing a Haskell->JavaScript compiler.
So yes: with JavaScript as the target, other languages are second-class citizens. But with some bytecode, that won't probably won't change much. Knowing how these things get designed, the end result could easily be that every language including JavaScript becomes a second-class citizen.