🐞 bug report

Affected Package

The issue is caused by package @angular/common.

And it is related to @angular/google-maps.

Is this a regression?

I'm not sure. This is the first time for me trying to implement a JSONP call to the Google Maps API in Angular and support Internet Explorer 11.

Description

A JSONP call to the Google Maps API fails in Internet Explorer 11 while it works fine in other browsers.

I followed this guide: https://github.com/angular/components/tree/master/src/google-maps#lazy-loading-the-api

JSONP calls only fail in Internet Explorer with the Google Maps API. I tried other JSONP endpoints, and they seem to work fine.
So, if you think this is not an Angular issue, this bug needs to taken to the Google Maps API I guess.

🔬 Minimal Reproduction

I created a demo repository here: https://github.com/sebastianhaeni/angular-jsonp-bug

Unfortunately it cannot be reproduced on stackblitz because it needs a full prod build, so IE 11 can execute the JavaScript (ES5 and polyfills needed).

My hunch is that it's somehow a problem with the lifecycle of the JSONP callback function on the window object, which is maybe removed too early.

🔥 Exception or Error

Unhandled Promise rejection: ng_jsonp_callback_0 is not a function ; Zone:  ; Task: Promise.then ; Value: InvalidValueError: ng_jsonp_callback_0 is not a function undefined

🌍 Your Environment

Angular Version:

Angular CLI: 10.0.8
Node: 12.18.1
OS: darwin x64

Angular: 10.0.14
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router
Ivy Workspace: Yes

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.1000.8
@angular-devkit/build-angular     0.1000.8
@angular-devkit/build-optimizer   0.1000.8
@angular-devkit/build-webpack     0.1000.8
@angular-devkit/core              10.0.8
@angular-devkit/schematics        10.0.8
@angular/cli                      10.0.8
@ngtools/webpack                  10.0.8
@schematics/angular               10.0.8
@schematics/update                0.1000.8
rxjs                              6.5.5
typescript                        3.9.7
webpack                           4.43.0

Anything else relevant?

Specific browser version:

• Internet Explorer 11
• Version: 11.3986.14393.0
• Update Versions: 11.0.210