[Question] How to pass a javascript callback correctly?

[smstuebe]

Hi,

Is it possible to pass a javascript function as callback? (the feature table suggests it)
Somehow my script hangs when doing this:

cat.py

class Cat:
    def __init__(self, name):
        self.name = name  

    def meow(self, x):
        return x(self.name)

test.ts

const t = await python('../cat.py');

const cat = await t.Cat('test');
console.log(await cat.name); // outputs test
const cb = async (s: string) => s.split('').reverse().join('');
console.log(await cat.meow(cb)); // hangs

I'm using typescript.
I couldn't find an example how to do it right. I tried different variations auf using async / await. Sorry if I have overseen it.

Thanks

rgds Sven

[extremeheat]

def fn(cb): cb(1, 2, 3)

const { fn } = await python('../cat.py');
await fn(console.log)

Should print out 1, 2, 3.

https://colab.research.google.com/gist/extremeheat/cab8f57d7f79fef37ce76ecdd5d17093/jspy-cb-test.ipynb