Clojuescript is definitely not the most inefficient compile-to-js language. For example, the default data types will be well-designed with persistent data-struc

Clojuescript is definitely not the most inefficient compile-to-js language. For example, the default data types will be well-designed with persistent data-structures instead of eg singly linked lists. But maybe you’re limiting to some subset in which clojurescript is the slowest.