ZoneAwareError reads original stack despite setting __Zone_Error_ZoneJsInternalStackFrames_policy #43240

Which @angular/* package(s) are relevant/releated to the feature request?

No response

Description

Zone.js's ZoneAwareError always stores the original error's stack in the constructor by accessing error.stack no matter what the __Zone_Error_ZoneJsInternalStackFrames_policy is.

This can lead to performance overhead in V8 when using custom stack traces because the prepareStackTrace method runs uneccesarily when constructing errors even if the error's stack will never be accessed.

In our project we use the source-map-support package that provides source map support for stack traces. This can be a costy operation first time (seconds), which we want to avoid when the error's stack is never accessed.

Proposed solution

If possible only access the original error's stack if it is necessary regarding the __Zone_Error_ZoneJsInternalStackFrames_policy.

Alternatives considered

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