Angular v20.3 breaks Application Insights with Uncaught TypeError: Cannot redefine property: name

[MSNev]

Which @angular/* package(s) are the source of the bug?

Don't known / other

Is this a regression?

Yes

Description

This issue was raised on the Applicaiton Insights repo, but we don't define "__name" and according to the people consuming us when they roll back to v20.2 the problem does not occur

Uncaught TypeError: Cannot redefine property: name
at defineProperty ()
at __name (chunk-TJFVSI2U.js:20:33)
at AnalyticsPlugin.js:57:10

microsoft/ApplicationInsights-JS#2643

Based on out analysis thus far this is a bundling / packaging issue that has been introduced in Angular 20.3 and not a specific issue for Application Insights.

Please provide a link to a minimal reproduction of the bug

See link bug

Please provide the exception or error you saw

Uncaught TypeError: Cannot redefine property: name
    at defineProperty (<anonymous>)
    at __name (chunk-TJFVSI2U.js:20:33)
    at AnalyticsPlugin.js:57:10

Please provide the environment you discovered this bug in (run ng version)

Anything else?

No response

[JeanMeche]

This is likely related to /pull/31123.

A repro found on microsoft/ApplicationInsights-JS#2643:

https://github.com/dougclutter/Angular20WithAppInsights

[d-koppenhagen]

It seems the problem occurs with several @Azure libs.

I'm running into the same error, but using @azure/communication-calling:

client:733 [vite] connecting...
client:827 [vite] connected.
chunk-QIVBGF7Z.js:29  Uncaught TypeError: Cannot redefine property: name
    at defineProperty (<anonymous>)
    at __name (chunk-QIVBGF7Z.js:29:33)
    at sdk.bundle.js:26:65843
__name @ chunk-QIVBGF7Z.js:29
(anonymous) @ sdk.bundle.js:26

where sdk.bundle.js comes from node_modules/@azure/communication-calling/dist-esm/sdk.bundle.js

I opened another issue for @azure/communication-calling: Azure/azure-sdk-for-js#35940