Error while adding a widget

[oceanedruenne]

Hello !

I'm trying to add a new widget by following the tutorial on the website. Sadly, here's the error I have :

And here's the config.js :

I'm using JavaScript so I can't use "as IWidget' (is what ChatGPT told me to do but it didn't work).

Has anyone ever encountered this error?

Thank you very much !

Best regards,

Ocean