A boolean operator is translated to a bitwise operator, not a boolean operator

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript, python
Domain
compilers

Research direction

No files, tests, or entry points are named. Start by tracing how the compiler translates Python’s |= operator, then compare the generated JavaScript with the boolean behavior described in the examples; done means boolean assignment uses the boolean operator and preserves true/false rather than producing 1/0.

Written by the indexing model from the issue text.

Description

I found that Python boolean operator '|=' was translated to '|=' in Javascript. They look the same, but they are not the same.

In Javascript, '|=' is a bitwise operator returning 1 or 0, not true or false. Javascript has another operator for boolean operations, '||=' returning true or false. Following is examples showing the difference:

// Javascript example:
var b= false;
b||= true;
console.log("after b||= true; b= ", b);
b|= true;
console.log("after b|= true; b= ", b);

output result:

after b||= true; b=  true
after b|= true; b=  1

Thanks.

Dominant language
Python
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