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The Dart SDK, including the VM, dart2js, core libraries, and more.

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So currently you have to define default values to optional properties inside the construct's parenthesis when using `[]` instead of it implicitly understanding its default value when we're using `[]`...

area-sdk

Hey Dart Team! Coverage calculation has changed since 2.18 and is no longer calculating coverage on mixins. Please check by yourself at https://github.com/tsinis/mixins_tests_bug Just run tests with the coverage flag...

area-vm
cherry-pick-candidate

Original issue in Flutter: https://github.com/flutter/flutter/issues/101647 Rare issue seen in production on Flutter web when calling myStreamSubscription.cancel() in StatefulWidget dispose(). Appears to be a race condition and in release mode only....

web-libraries
area-web

The analyzer is a heavy user of `List`s and `Map`s in the AST and the Element model. When running analyzer on flutter for 2 rounds (first warms up the memory...

area-analyzer
type-performance
P2

from [log](https://logs.chromium.org/logs/dart/buildbucket/cr-buildbucket/8816422682988049825/+/u/test_results/new_test_failures__logs_) ``` /==================================================================================================================================================================\ | cfe-unittest-asserts-release-mac:pkg/front_end/test/fasta/text_serialization/extension_types/type_variable_in_static_context broke (Pass -> Fail, expected Pass) | \==================================================================================================================================================================/ 0:00:00.000293: Indexed 18 libraries (0 bytes) in 0.292ms, that is, 0.000 bytes/ms, and 0.016 ms/libraries. ......

gardening
area-front-end

If one imports a Dart web `dart:` library and tried to run it in a Dart native runtime, an error like this is shown during compilation: ``` $ dart run...

type-enhancement
area-front-end

The test ``` standalone/regress_41329_absolute_test (RuntimeError -> Timeout, expected Pass) ``` is failing on configurations ``` vm-kernel-nnbd-win-debug-x64 vm-kernel-win-debug-ia32 vm-kernel-win-debug-x64 vm-kernel-win-debug-x64c vm-kernel-msvc-windows ``` The test failure logs say "diagnostics: win_sdk_path not found",...

area-vm
gardening

For testing purposes it would be useful if there was a way to drive the dart:core clock manually, so that `DateTime.now` returned predictable times. One solution would be to provide...

area-library
library-async
library-core
type-enhancement
core-n

This tracker is for issues related to **Analyzer**. ## Summary After Dart 2.17, inspections are interrupted frequently when manipulating codes. See the video for a better understanding of what happened:...

area-analyzer
P3
analyzer-editing-experience

Earlier today, I reported an issue over at the Dart-Code repository (https://github.com/Dart-Code/Dart-Code/issues/2742), because I was having issues with a breakpoint not triggering during tests. After some back and forth it...

area-vm