datetime error in --tconv option

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript, python
Domain
compilers

Research direction

Start with datetime.py at lines 336 and 1776, and compare compilation with and without --tconv while using --kwargs and --keycheck. Trace how offset reaches the bounds check and reproduce the TypeError; done when the combined options compile and datetime no longer raises this error.

Written by the indexing model from the issue text.

Description

IS: could not reproduce NEED: info

The following error is raised in --tconv compiler option

datetime.py:336 Uncaught TypeError: Cannot read property 'name' of null

I traced up in call stack. The problem is that 'offset' is null (in datetime.py:1776)

    # __pragma__('opov')
    if not (self._minoffset <= offset <= self._maxoffset):

It has no problem without --tconv option. Possibly 'opov' option collides with --tconv option?

I am trying to use --kwargs, --keycheck, --tconv options altogether because the compiled javascript is directly readable, and I want to obfuscate my source code. Only --tconv option encounters an error in datetime.

Dominant language
Python
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