v0.4.0 #308

PythonMonkey v0.4.0

• fixed a bug where methods called on proxied JS objects would use globalThis for the value of this
• implemented proxying of arbitrary python objects in JavaScript, like so:

import pythonmonkey as pm
class Counter:
 def __init__(self):
 self.count = 0
 def increment(self):
 self.count = self.count + 1
pm.eval("""
(pyObject) => {
 console.log(pyObject.count); // 0
 pyObject.increment();
 console.log(pyObject.count); // 1
}
""")(pyObject)

• implemented a new type called JSMethodProxy, which can be used to implement methods on python objects in JavaScript, like so:

import pythonmonkey as pm
jsFunc = pm.eval("(function() { this.count++; })")
class Counter:
 def __init__(self):
 self.count = 0
 self.increment = pm.JSMethodProxy(jsFunc, counter)
counter = Counter()
print(counter.count) # 0
counter.increment()
print(counter.count) # 1

• various garbage collection optimizations
• various memory leak fixes
• implemented complete cross-language stack traces
• pm.eval can now accept a file object as its first argument (such as an object returned by the open() python built-in), which is expected to be a javascript file
• when calling pm.require (or other requires created by pm.createRequire), .py CommonJS modules now have precedence over .js modules when there is a namespace collision
• setTimeout now returns a Node.js-style Timeout class for the timeout id, with .ref() and .unref() methods
• implemented XMLHttpRequest.withCredentials
• implemented "json" support for XMLHttpRequest.responseType
• implemented remaining standard console methods