constkeyword yet browsers were reported (Stackoverflowwise) to correctly interpret it as early as in 2008; to not speak of
letand other modern stuff.
So, are there any plans among the Qt dev team to synchronize the JS engine with the language's current state?
(Hopefully they read this forum. :-O )
The forum is not the right place to ask such questions. It's a community driven forum that is more user oriented.
You should post this on the interest mailing list. You'll find there Qt's developers/maintainers.
You should consider to use C++ instead