PositionResolver fails to properly detect a Window element on a Electron-based app

[iErik]

If I try to use the infiniteScroll directive on any component of the page, with its option to listen to the window scroll event set to the true, I receive the following error:

Uncaught TypeError: Cannot read property 'clientHeight' of null
    at PositionResolver.height (ngx-infinite-scroll.es5.js?454e:114)
    at PositionResolver.calculatePointsForElement (ngx-infinite-scroll.es5.js?454e:94)
    at PositionResolver.calculatePoints (ngx-infinite-scroll.es5.js?454e:61)
    at Object.mergeMap (ngx-infinite-scroll.es5.js?454e:318)
    at MergeMapSubscriber.eval [as project] (ngx-infinite-scroll.es5.js?454e:174)
    at MergeMapSubscriber._tryNext (mergeMap.js?4a55:120)
    at MergeMapSubscriber._next (mergeMap.js?4a55:110)
    at MergeMapSubscriber.Subscriber.next (Subscriber.js?978a:89)
    at FilterSubscriber._next (filter.js?bcf6:87)
    at FilterSubscriber.Subscriber.next (Subscriber.js?978a:89)
    at SampleTimeSubscriber.notifyNext (sampleTime.js?91e5:81)
    at AsyncAction.dispatchNotification (sampleTime.js?91e5:88)
    at AsyncAction._execute (AsyncAction.js?b38b:111)
    at AsyncAction.execute (AsyncAction.js?b38b:86)
    at AsyncScheduler.flush (AsyncScheduler.js?128d:36)
    at ZoneDelegate.invokeTask (zone.js?03e9:425)
    at Zone.runTask (zone.js?03e9:192)
    at ZoneTask.invokeTask (zone.js?03e9:499)
    at ZoneTask.invoke (zone.js?03e9:488)
    at timer (zone.js?03e9:1896)

I'm not very familiar with the project source code, but I suspect this is happening because of this particular snippet in the source code of the PositionResolver service:

isElementWindow(windowElement: ContainerRef): boolean {
  const isWindow = Object.prototype.toString.call(windowElement).includes('Window');
  return isWindow;
}

This will work on a native browser, but it happens that the first statement in this function will return "[object global]" for the window object of a Electron-based app, thus it will not be treated as a window element and this results in some weird behavior.