ERR-004high SeverityError Handling & Resilience
Asynchronous Promise Rejections Explicitly Handled
AI writes unhandled floating promises like doAsyncWork() without await or .catch(), triggering unhandledRejection crashes on Node.js.
1-Click Fix Prompt for Cursor & Claude Code
Review my codebase for "Asynchronous Promise Rejections Explicitly Handled" (ERR-004). Issue: AI writes unhandled floating promises like doAsyncWork() without await or .catch(), triggering unhandledRejection crashes on Node.js. Remediation required: Always await asynchronous promises or attach an explicit .catch() handler. Please: 1. Locate any occurrences of this issue across my repository. 2. Refactor the code to follow production standards without breaking existing functionality. 3. Provide a clear command or step to test and verify the fix.
Why AI Assistants Write This Bug
AI writes unhandled floating promises like doAsyncWork() without await or .catch(), triggering unhandledRejection crashes on Node.js.
AI code generation prioritizes immediate syntax execution over production edge cases. When an assistant hits an undefined variable or strict type error, it frequently takes the path of least resistance rather than implementing standard pre-launch security patterns.
Code Comparison
Common AI Code PatternVulnerable
// Vulnerable AI-generated pattern for: Asynchronous Promise Rejections Explicitly Handled
// Problematic pattern: AI writes unhandled floating promises like doAsyncWork() without await or .catch(), triggering unhandledRejection crashes on Node.js.Launch-Ready Fix
// Production-ready fix for: Asynchronous Promise Rejections Explicitly Handled
// Recommended remediation: Always await asynchronous promises or attach an explicit .catch() handler.Remediation & Verification Checklist
Remediation: Always await asynchronous promises or attach an explicit .catch() handler.
- Search your codebase for pattern matching "Asynchronous Promise Rejections Explicitly Handled".
- Apply the recommended remediation: Always await asynchronous promises or attach an explicit .catch() handler.
- Run local build and test commands to ensure no regressions.
- Verify in your browser or with curl that the issue is resolved.
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