As someone terrified of lower level languages (I'm a somewhat JR dev, used to working with fun things like Python, Ruby, Elixir and JS) this would kind of be really nice. Mostly maps.
Have: http://havelang.org/ with generics
Godzilla: https://github.com/jingweno/godzilla ES2015 to Go
I didn't try any of them, nor Go itself.
As someone terrified of lower level languages (I'm a somewhat JR dev, used to working with fun things like Python, Ruby, Elixir and JS) this would kind of be really nice. Mostly maps.