Array.forEach for objects passed from Python

[PetterS]

When passing a Python array into duktape, Array.forEach does not work.

TypeError: undefined not callable (property 'forEach' of [object Object])

length and indexing with [] work as expected. I thought that forEach should be available since DUK_USE_ARRAY_BUILTIN is defined in the config header.

pyduktape2/vendor/duk_config.h

Line 2794 in 144d0f9

#define DUK_USE_ARRAY_BUILTIN

[PetterS]

For arrays that are created within Duktape, forEach works as expected.

[PetterS]

Possible work-around: dumping the Python objects as JSON and decoding them with duktape:

So instead of f(*args):

json_args = [json.dumps(a) for a in args]
duktape_args = [context.eval_js(f"JSON.parse('{j}')") for j in json_args]
f(*duktape_args)

[phith0n]

Till this moment, pyduktape2 doesn't support convert python list to javascript Array.

Python primitive types such as:

• int
• float
• bool
• str
• bytes
• NoneType

will be converted to equivalent Javascript primitives.

Other types:

• list
• dict
• object

will be converted to the base Object type in Javascript, Instead of Array or other class.

[phith0n]

pyduktape2 only has the necessary support for python list proxy:

• get
• set
• has

[PetterS]

Thank you for the response!

Encoding with JSON and passing strings works well for my purposes.