[wip] js2py to quickjs

[derrickaw]

1. Try converting js2py to quickjs

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[derrickaw]

/gemini review

[gemini-code-assist]

Code Review

This pull request replaces the js2py library with quickjs-ng for executing JavaScript UDFs in Beam YAML, addressing compatibility issues with Python 3.12. The implementation introduces a _JsWrapper class that utilizes thread-local caching for JavaScript functions and handles data transfer via JSON. Feedback includes suggestions to move the thread-local cache to the module level for better idiomaticity, removing a redundant local import of quickjs, and improving the regex used to identify JavaScript function names to support async declarations.

[derrickaw]

/gemini review

[gemini-code-assist]

Code Review

This pull request replaces the js2py library with quickjs-ng for executing JavaScript UDFs within Beam YAML. Key changes include the introduction of a _JsWrapper class and a thread-local cache for JavaScript functions. Feedback focuses on potential regressions and performance issues caused by using JSON serialization for data transfer, fragility in the JavaScript variable unpacking logic for non-standard field names, and a restrictive regex for identifying function names in callables.