BUG: `kwargs` don't work

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript, python
Domain
compilers

Research direction

Start by compiling and running the provided multiply example in Transcrypt, then compare its generated JavaScript with CPython's output. Trace the runtime's kwargtrans mechanism to find why the keyword argument is ignored; done means multiply(2, b=3) produces 6 as it does in CPython.

Written by the indexing model from the issue text.

Description

IS: bug 
def multiply(a, b=1):
    return a * b

print(multiply(2))
print(multiply(2, 3))
print(multiply(2, b=3)) # doesn't work in Transcrypt

In CPython, we get the expected output:

2
6
6

In Transcrypt, we get:

2
6
2

According to transcrypt.org, kwargs are supported and are not acknowledged as a limitation.
Also, there does exist a __kwargtrans__ mechanism in the runtime. It just does not appear to be working.

Dominant language
Python
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