from js import fetch treats fetch as a free function

[madhur-tandon]

fetch is a member function of window.
However, using from js import fetch doesn't realize that and leads to the error:

TypeError: 'fetch' called on an object that does not implement interface Window.

For Reproducing the Error:

%%py

from js import document, Request, fetch, URL
img_tag = document.createElement('img')
req = Request.new('https://i.ibb.co/3f4yJQS/face4.jpg')

def func(response):
    return response.blob()

def func2(blob):
    objURL = URL.createObjectURL(blob)
    img_tag.src = objURL

fetch(req).then(func).then(func2)

document.body.appendChild(img_tag)