v0.7.0

[zollqir]

• added a new build type:
  • Sanitize: same as Debug, except with AddressSanitizer enabled
• added a new tool inspired by wtfnode called WTFPythonMonkey to track down any hanging setTimeout/setInterval timers that are still ref'd when you hit ctrl-C.
  • When using pmjs, to enable it you can simply pass the --wtf flag, like so:

  pmjs --wtf <filename>.js

  • When using pythonmonkey from python, it can be enabled by using a context manager (with-statement) around the entry point of the event loop, like so:

  import asyncio
  import pythonmonkey as pm
  from pythonmonkey.lib.wtfpm import WTF
  
  async def pythonmonkey_main():
    pm.eval("setInterval(() => console.log(new Date), 500)")
    await pm.wait()
  
  with WTF():
    asyncio.run(pythonmonkey_main())

• implemented JS-like function calling for python functions in JS. Similar to JS functions, you can now call python functions with too few or too many arguments without throwing an error.
  • When too many arguments are supplied, those beyond the function's parameter count are ignored, e.g.:

  def f(a, b):
    return [a, b]
  assert [1, 2] == pm.eval("(f) => f(1, 2, 3)")(f)

  • When too few arguments are supplied, those beyond the number of supplied arguments are passed as None to match JS's behaviour of passing undefined, e.g.:

  def f(a, b):
    return [a, b]
  assert [1, None] == pm.eval("(f) => f(1)")(f)

  • This also works for functions with default arguments, or varargs, e.g.:

  def f(a, b, c=42, d=43, *args):
    return [a, b, c, d, *args]
  assert [1,    2,    3,  4, 5] == pm.eval("(f) => f(1, 2, 3, 4, 5)")(f)
  assert [1,    2,    3,  4   ] == pm.eval("(f) => f(1, 2, 3, 4)"   )(f)
  assert [1,    2,    3,  43  ] == pm.eval("(f) => f(1, 2, 3)"      )(f)
  assert [1,    2,    42, 43  ] == pm.eval("(f) => f(1, 2)"         )(f)
  assert [1,    None, 42, 43  ] == pm.eval("(f) => f(1)"            )(f)
  assert [None, None, 42, 43  ] == pm.eval("(f) => f()"             )(f)

• implemented the copy protocol (both copy.copy and copy.deepcopy) for JSStringProxies
• using the aforementioned WTFPythonMonkey, we've fixed several bugs related to timers, including:
  • the Future object is not initialized error and following segfault
  • heap-use-after-free in timerJobWrapper
  • hitting ctrl-C in pmjs printing out the entire Python KeyboardInterrupt traceback
  • intervals from setInterval were not being unref'd correctly
• fixed a bug where uncaught JS Promise rejections would result in a Future exception was never retrieved Python error, rather than the actual JS error
• added support for HTTP-Keep-Alive in our implementation of XMLHttpRequest
• fixed a memory leak related to cross-language strings
• fixed a bug where attempting to install Pythonmonkey from source failed on Ubuntu 24.04
• PythonMonkey now uses the bleeding edge version of SpiderMonkey on this and all future releases
• we now build and distribute binaries for python 3.8 on amd64 Mac OS

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This discussion was created from the release v0.7.0.