It's Python with javascript ES6 semantic, there is no support for Python list, dict or support for Python magic parameters kwargs. Good work nonetheless.
It's implementable really and it is half-implemented, have a look at the call conventions... additional keyword arguments can be specified without any problem
The problem is that there's no kwargs equivalent in js land.. and probably i don't want to wrap any call to make it possible.
* as literals;
* in for loops;
Keyword arguments accumulator has no corresponding feature in the ES6 world, as far as I know....