Problem with the zone.js (Angular 13)

[jakubsobel]

I'm trying to use Partytown with an Angular 13 project, but it looks like the Partytown initialisation fails because of the zone.js patching of the IntersectionObserver and MutationObserver.

It looks like the Partytown's getConstructorName function is returning an empty string for the IntersectionObserver and MutationObserver when zone.js is in use, and that breaks the mainWindow[cstrName].prototype line in the partytown-sandbox-sw.js.

Minimal reproduction:
https://github.com/jakubsobel/partytown-zonejs-issue
Run using the ng serve, go to the localhost:4200, you will see the problem in the console:

Uncomment the lines in the zone-flags.ts file. That will disable the patching of the IntersectionObserver and MutationObserver. Run the project again, Partytown will then work correctly.

[soniar4i]

Same problem here.

[naveedahmed1]

I have verified the changes suggested by @DanteDeRuwe in pull request https://github.com/BuilderIO/partytown/pull/164/files on my local machine and it seems that this fixes this issue.

Can anyone from the team review and merge this pull request?