Revert version range, readd legacy run

Author: hunterbreathat-wk

.github/workflows/dart_ci.yml

@@ -46,4 +46,43 @@ jobs:
           dart run build_runner test -r -- -P concurrent-tests
           dart run build_runner test -r -- -P non-concurrent-tests
         timeout-minutes: 10
+  if: ${{ always() && steps.install.outcome == 'success' }}
+
+  build_legacy:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    matrix:
+      sdk: [ 2.13.4 ]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dart-lang/setup-dart@v1
+        with:
+          sdk: ${{ matrix.sdk }}
+
+      - id: install
+        name: Install dependencies
+        run: pub get
+        timeout-minutes: 2
+
+      - name: Check formatting
+        run: dart format . -l 120 --set-exit-if-changed
+        if: ${{ always() && steps.install.outcome == 'success' }}
+
+      - name: Analyze project source
+        run: dartanalyzer .
+        if: ${{ always() && steps.install.outcome == 'success' }}
+
+      - name: Run tests (DDC)
+        run: |
+          pub run build_runner test -- -P concurrent-tests
+          pub run build_runner test -- -P non-concurrent-tests
+        timeout-minutes: 10
+        if: ${{ always() && steps.install.outcome == 'success' }}
+
+      - name: Run tests (dart2js)
+        run: |
+          pub run build_runner test -r -- -P concurrent-tests
+          pub run build_runner test -r -- -P non-concurrent-tests
+        timeout-minutes: 10
         if: ${{ always() && steps.install.outcome == 'success' }}

pubspec.yaml

@@ -4,7 +4,7 @@ description: A Dart unit testing library for OverReact components that mimics th
 homepage: https://github.com/Workiva/react_testing_library/
 documentation: https://workiva.github.io/react_testing_library
 environment:
-  sdk: ">=2.18.4 <3.0.0"
+  sdk: ">=2.11.0 <3.0.0"
 
 dependencies:
   color: ">=2.1.1 <4.0.0"