Convert JavaScript uncaught exception stack traces to Dart stacks

[jason-simmons]

Fixes: #1265
Fixes: flutter/flutter#101888

[annagrin]

Thank you Jason! It would be great to add a test so we don't introduce regressions in the future.

[jason-simmons]

Added a test

[annagrin]

Thanks Jason! Left some comments to cover more cases.

There are a few things we need to do:

• address CR comments
• update dwds version to 14.0.2-dev in changelog.md and pubspec.yaml (14.0.1 is in the making right now, so changing to 14.0.2-dev would be the easiest to resolve conflicts)
• add a description of the fix to the changelog.md
• run dart run build_runner build
• commit and submit your changes

[annagrin]

Thanks Jason!

Let me know if you would like to me to take over at any point if it gets too complicated.

[jason-simmons]

Added handling for the VSCode case, and a check in an existing test for stack trace mapping on an exception pause event.

PTAL

[annagrin]

Thanks Jason, this is fantastic! Merging with master should resolve the test failures (you might need to update the version to 14.0.3-dev and rerun dart run build_runner build, since the master version has updated, apologies, it seems like you stumbled into a cluster of dwds releases around dart SDK stable update...).

[jason-simmons]

I rebased this on master and it's passing CI now.

However, when I run dart run build_runner build it modifies various JavaScript files that look unrelated. In particular, the output seems to be undoing some of the changes that were made by 8426dc5

Should I add the build_runner output to this PR, or can the PR be landed as is? Or do I need to do something else (such as running build_runner with a different version of the Dart SDK)?

[annagrin]

I am not sure what's happening, could be that your dart version is not the same as Elliott's, or some packages are outdated. I'll try to fix that part and append to your PR.

[annagrin]

@jason-simmons I built your PR and it seems to not generate anything bad, just some changes in the compiled client.js due to latest changes in dart2js. LGTM to check this in after the test pass!

[annagrin]

LGTM! Thank you Jason for your contribution!

[annagrin]

I am going to merge this, thank you Jason!