avra-cadavra/deprecated-api-detection
.cursor/skills/deprecated-api-detection/SKILL.md
Detects and flags deprecated Flutter/Dart APIs, suggests modern equivalents. Use when reviewing code, refactoring, or ensuring code uses modern APIs.
development
Updated Apr 4, 2026
$ install --global
skillsauthnpx skillsauth add avra-cadavra/avrai deprecated-api-detectionInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
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3
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9
Scanners in report
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TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
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VirusTotalMulti-engine malware detection
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CrowdStrikeAdvanced threat intelligence
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OSV-ScannerOpen Source Vulnerability database check
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OWASP Dep-Check
50%
Last scanned: Apr 23, 2026, 1:35 AM1.6s1 file scanned
SKILL.md
- name:
- deprecated-api-detection
- description:
- Detects and flags deprecated Flutter/Dart APIs, suggests modern equivalents. Use when reviewing code, refactoring, or ensuring code uses modern APIs.
Deprecated API Detection
Mandatory Rule
✅ Zero deprecated API warnings - always use modern Flutter/Dart APIs ✅ Check Flutter/Dart migration guides for modern equivalents
Common Deprecations
Flutter Widgets
❌ Deprecated:
RaisedButton(
onPressed: () {},
child: Text('Click'),
)
✅ Modern:
ElevatedButton(
onPressed: () {},
child: Text('Click'),
)
Flutter Testing
❌ Deprecated:
tester.binding.window.physicalSize = Size(800, 600);
✅ Modern:
tester.view.physicalSize = Size(800, 600);
Flutter Text Theme
❌ Deprecated:
Theme.of(context).textTheme.headline
✅ Modern:
Theme.of(context).textTheme.headlineMedium
Detection Methods
IDE Warnings
Most IDEs highlight deprecated APIs automatically:
- Yellow squiggly lines
- Deprecation warnings in Problems panel
- Hover tooltips showing deprecation info
Static Analysis
Run static analysis to detect deprecations:
flutter analyze
dart analyze
Migration Guides
Check Flutter/Dart migration guides for common deprecations:
- Flutter Migration Guide
- Dart Migration Guide
- Breaking Changes documentation
Modern API Patterns
Material 3
Use Material 3 widgets when available:
// ✅ Modern Material 3
Card(
elevation: 0, // Use shadowColor instead
shape: RoundedRectangleBorder(...),
)
Null Safety
Use null-safe APIs:
// ✅ Modern null-safe
String? getValue() => _value;
final result = getValue() ?? 'default';
Async/Await
Use async/await instead of deprecated patterns:
// ✅ Modern async/await
Future<String> fetchData() async {
return await repository.getData();
}
Refactoring Pattern
When encountering deprecated API:
- Identify deprecation - Read deprecation message
- Find modern equivalent - Check migration guide
- Update code - Replace with modern API
- Test changes - Verify behavior unchanged
- Remove old code - Clean up deprecated usage
Common Deprecations Checklist
- [ ] No
RaisedButton(useElevatedButton) - [ ] No
FlatButton(useTextButton) - [ ] No
OutlineButton(useOutlinedButton) - [ ] No
tester.binding.window(usetester.view) - [ ] No deprecated text theme names (use
headlineMediumnotheadline) - [ ] No deprecated HTTP methods
- [ ] No deprecated image loading APIs
- [ ] No deprecated route APIs
Tools
- Flutter analyze - Detects deprecations
- IDE warnings - Highlights deprecated APIs
- Migration guides - Provides modern equivalents
Reference
- Flutter Migration Guide
- Dart Migration Guide
- Breaking Changes documentation
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