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Performance tools for Flutter

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While investigating https://github.com/Dart-Code/Dart-Code/issues/5027 I tried connecting DevTools to a web app to see if I could repro the issue outside of VS Code. When I did, I got this error...

Spinning this off of https://github.com/dart-lang/webdev/issues/2257, although this issue involves work for other systems besides DevTools. But I would like everything to be tracked in one place. This all began because...

debugger page

When https://github.com/flutter/devtools/issues/4755 is fixed (in progress), this styling will be an issue. We will need to fix the DevTools + perfetto CSS. Dark theme: ![Screenshot 2024-03-05 at 1 38 36 ...

performance page > perfetto
P1

Steps to reproduce: 1. Open DevTools for a web app 2. The hot-restart button is visible 3. Copy the VM service URI 4. Click "Connect to a new app" and...

Open Network Page in vscode: Inspect any API with a long JSON response: https://github.com/flutter/devtools/assets/25801929/648eb712-4f19-47df-bf5d-f654afb6fcd6 ___ **DevTools version**: 2.28.4 **IDE**: VSCode **Connected Device**: CPU / OS: arm64 (64 bit) ios Connected...

network page

We have gotten several reports of this error. The stack traces are minified so they aren't helpful, but looks like it is coming from `codeview_controller.dart` based on the String: https://github.com/flutter/devtools/blob/master/packages/devtools_app/lib/src/screens/debugger/codeview_controller.dart/#L251

bug
P1