Start running CI on Dart 3

.github/workflows/dart_ci.yml

@@ -22,17 +22,24 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Can't run on `dev` (Dart 3) until we're fully null-safe.
-        sdk: [ 2.19.6 ]
+        sdk: [ 2.19.6, 3.4.4, main ]
     steps:
       - uses: actions/checkout@v4
-      - uses: dart-lang/setup-dart@v1
+      - id: setup-dart
+        uses: dart-lang/setup-dart@v1
         with:
           sdk: ${{ matrix.sdk }}
 
       - name: Print Dart SDK version
         run: dart --version
 
+      - name: Delete Dart-2-only files when running on Dart 3
+        run: |
+          DART_VERSION="${{ steps.setup-dart.outputs.dart-version }}"
+          if [[ "$DART_VERSION" =~ ^3 ]]; then
+            ./tool/delete_dart_2_only_files.sh
+          fi
+
       - id: install
         name: Install dependencies
         run: dart pub get
@@ -102,21 +109,28 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Can't run on `dev` (Dart 3) until we're fully null-safe.
-        sdk: [ 2.19.6 ]
+        sdk: [ 2.19.6, 3.4.4, main ]
         analyzer:
           # We only have one version currently, but we'll leave this CI step in place
           # for the next time we need to support multiple analyzer versions.
           - ^5.1.0
     steps:
       - uses: actions/checkout@v4
-      - uses: dart-lang/setup-dart@v1
+      - id: setup-dart
+        uses: dart-lang/setup-dart@v1
         with:
           sdk: ${{ matrix.sdk }}
 
       - name: Print Dart SDK version
         run: dart --version
 
+      - name: Delete Dart-2-only files when running on Dart 3
+        run: |
+          DART_VERSION="${{ steps.setup-dart.outputs.dart-version }}"
+          if [[ "$DART_VERSION" =~ ^3 ]]; then
+            ./tool/delete_dart_2_only_files.sh
+          fi
+
       - name: Update analyzer constraint to ${{ matrix.analyzer }} and validate `dart pub get` can resolve
         id: resolve
         run: |
@@ -142,17 +156,24 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # Can't run on `stable` (Dart 3) until we're fully null-safe.
-        sdk: [ 2.19.6 ]
+        sdk: [ 2.19.6, 3.4.4, main ]
     steps:
       - uses: actions/checkout@v4
-      - uses: dart-lang/setup-dart@v1
+      - id: setup-dart
+        uses: dart-lang/setup-dart@v1
         with:
           sdk: ${{ matrix.sdk }}
 
       - name: Print Dart SDK version
         run: dart --version
 
+      - name: Delete Dart-2-only files when running on Dart 3
+        run: |
+          DART_VERSION="${{ steps.setup-dart.outputs.dart-version }}"
+          if [[ "$DART_VERSION" =~ ^3 ]]; then
+            (cd ../.. && ./tool/delete_dart_2_only_files.sh)
+          fi
+
       - id: link
         name: Override over_react dependency with local path
         run: cd ../.. && dart pub get && dart tool/travis_link_plugin_deps.dart

tool/delete_dart_2_only_files.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+#
+# This script deletes files that can only be run in Dart 2 (ones not using null-safety),
+# and need to be deleted for analysis and compilation to work in Dart 3.
+#
+
+set -e
+
+rm -rf test/over_react/component_declaration/non_null_safe_builder_integration_tests
+rm test/over_react/component_declaration/flux_component_test/component2/unsound_flux_component_test.dart
+rm test/over_react/component_declaration/flux_component_test/unsound_flux_component_test.dart
+rm test/over_react_component_declaration_non_null_safe_test.dart
+
+rm -rf tools/analyzer_plugin/test/unit/util/non_null_safe
+rm -rf tools/analyzer_plugin/test/integration/assists/non_null_safe
+rm -rf tools/analyzer_plugin/test/integration/diagnostics/non_null_safe