Setting __Zone_disable_ZoneAwarePromise to true throws error #37349
Description
🐞 bug report
Affected Package
zone.js
Is this a regression?
I tried with angular 8 on stackblitz and it also throws Error.
Description
Setting __Zone_disable_ZoneAwarePromise = true; should disable zonejs patching of Promise.then. Instead, it throws Promise has beed overwritten error and stops.
🔬 Minimal Reproduction
Just add __Zone_disable_ZoneAwarePromise = true; to index.html as per documentation.
https://stackblitz.com/edit/angular-bazsff
🔥 Exception or Error
Error: Zone.js has detected that ZoneAwarePromise `(window|global).Promise` has been overwritten.
from packages/zone.js/lib/zone.ts::assertZonePatched.
🌍 Your Environment
Angular Version:
Angular CLI: 9.1.6
Node: 10.15.3
OS: linux x64
Angular: 9.1.7
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, platform-server
... router, upgrade
Ivy Workspace: Yes
Package Version
-----------------------------------------------------------
@angular-devkit/architect 0.901.6
@angular-devkit/build-angular 0.901.6
@angular-devkit/build-optimizer 0.901.6
@angular-devkit/build-webpack 0.901.6
@angular-devkit/core 9.1.6
@angular-devkit/schematics 9.1.6
@angular/cdk 9.2.1
@angular/cli 9.1.6
@ngtools/webpack 9.1.6
@nguniversal/builders 9.1.1
@nguniversal/common 9.1.1
@nguniversal/express-engine 9.1.1
@schematics/angular 9.1.6
@schematics/update 0.901.6
rxjs 6.5.5
typescript 3.8.3
webpack 4.42.0
zone.js: 0.10.3
Anything else relevant?
Polyfills.js states that only 3 variables have affect:
- __Zone_disable_requestAnimationFrame
- __Zone_disable_on_property
- __zone_symbol__UNPATCHED_EVENTS
If this is true, than maybe you only need to fix zonejs documentation, because it mentions a lot of other flags, __Zone_disable_ZoneAwarePromise being one of them.