Prepare for dart 3.0 alpha changes: Handle SDK layout update (#1907)

* Handle SDK layout update:

- change min SDK constraint to 3.0.0-134.0.dev
- update build_web_compilers to ^4.0.0
- update build_runner to ^2.4.0
- update SDK paths in code
- remove CI testing on stable and add testing on main

* Switch back to analyzing on dev channel

* Address CR comments

Author: Anna Gringauze

.github/workflows/dart.yml

@@ -17,18 +17,20 @@
 - Add back `ChromeProxyService.setExceptionPauseMode()` without override.
 - Make hot restart atomic to prevent races on simultaneous execution.
 - Return error on expression evaluation if expression evaluator stopped.
-- Prepare for Dart 3 alpha breaking changes:
-  - Generate missing SDK assets for tests.
-  - Enable frontend server null safe tests.
 
 **Breaking changes**
 - Include an optional param to `Dwds.start` to indicate whether it is running
   internally or externally.
-- Include an optional param to `Dwds.start` to indicate whether it a Flutter app
-  or not.
+- Include an optional param to `Dwds.start` to indicate whether it a Flutter
+  app or not.
 - Remove deprecated `ChromeProxyService.setExceptionPauseMode()`.
-- Replace `SdkConfiguration.unsoundSdkSummaryPath` with
-  `SdkConfiguration.weakSdkSummaryPath`.
+- Support dart 3.0-alpha breaking changes:
+  - Generate missing SDK assets for tests.
+  - Enable frontend server null safe tests.
+  - Update `build_web_compilers` constraint to `^4.0.0`.
+  - Update `build_runner` constraint to `^2.4.0`.
+  - Update min dart SDK constraint to `3.0.0-134.0.dev`
+  - Support changes in the SDK layout for dart 3.0.
 
 ## 16.0.1
 

dwds/CHANGELOG.md

@@ -6,7 +6,7 @@ description: >-
   A chrome extension for Dart debugging.
 
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=3.0.0-134.0.dev <3.0.0'
 
 dependencies:
   async: ^2.3.0
@@ -18,8 +18,8 @@ dependencies:
 
 dev_dependencies:
   build: ^2.0.0
-  build_web_compilers: ^3.0.0
-  build_runner: ^2.0.6
+  build_web_compilers: ^4.0.0
+  build_runner: ^2.4.0
   built_collection: ^5.0.0
   dwds: ^11.0.0
   webdev: ^2.0.0

dwds/debug_extension/pubspec.yaml

@@ -6,7 +6,7 @@ description: >-
   A Chrome extension for Dart debugging.
 
 environment:
-  sdk: '>=2.18.0 <3.0.0'
+  sdk: '>=3.0.0-134.0.dev <3.0.0'
 
 dependencies:
   built_value: ^8.3.0
@@ -15,10 +15,10 @@ dependencies:
 
 dev_dependencies:
   build: ^2.0.0
-  build_runner: ^2.0.6
+  build_runner: ^2.4.0
   built_collection: ^5.0.0
   built_value_generator: ^8.3.0
-  build_web_compilers: ^3.0.0
+  build_web_compilers: ^4.0.0
   dwds: ^16.0.0
   sse: ^4.1.2
   web_socket_channel: ^2.2.0