Error Handling Issues
Proper error handling is crucial for building resilient applications. Poor error handling leads to silent failures, difficult debugging, and frustrated users.
Common Error Handling Issues
Swallowed Exceptions
HighCatching exceptions without proper logging or handling, hiding critical errors
Silent failures, difficult debugging, undetected problems in production
try { riskyOperation() } catch (e) { /* empty catch block */ }
Generic Error Messages
MediumError messages that don't provide enough context for debugging
Increased debugging time, poor user experience, support burden
throw new Error("Failed") instead of specific error with context
Missing Error Boundaries
HighFrontend applications without error boundaries to catch rendering errors
White screen of death, complete app crashes, poor user experience
React app without ErrorBoundary components crashing entire page on component error
Unchecked Error Types
MediumNot validating error types before accessing properties
Runtime crashes when error structure differs from expected
catch (error) { console.log(error.message) } without checking if error has message property
Resource Leaks on Error
CriticalFailing to clean up resources (files, connections, locks) when errors occur
Memory leaks, connection pool exhaustion, locked resources
Opening database connection without try-finally to ensure closure on error
Error Recovery Failures
HighNot implementing proper retry logic or fallback mechanisms
Transient failures become permanent, poor resilience
Network request fails once and gives up instead of retrying with backoff
How to Prevent Error Handling Issues
Always log errors with sufficient context (stack traces, request IDs, user context)
Use specific error types and custom error classes for different scenarios
Implement error boundaries in React/Vue applications
Always validate error types before accessing properties
Use try-finally or RAII patterns to ensure resource cleanup
Implement retry logic with exponential backoff for transient failures
Provide actionable error messages to users and detailed logs for developers
Monitor error rates and set up alerts for anomalies
Error Handling Best Practices
Be Specific
Use specific error types and messages that help identify the problem quickly
Fail Fast
Detect and report errors as early as possible, don't let them propagate
Never Swallow
Always log or handle errors, never silently catch and ignore
Provide Context
Include relevant data in error messages to aid debugging
How CodeRaptor Helps
CodeRaptor analyzes your error handling patterns to ensure errors are properly caught, logged, and handled throughout your application.
Empty Catch Detection
Identify swallowed exceptions and missing error logging
Resource Cleanup
Verify proper resource cleanup in error scenarios
Error Boundary Checks
Ensure React components have proper error boundaries