LWCAdvancedwizarderror-handlingux
Design LWC error boundary pattern for multi-step wizard
Real World Scenario
Five-step onboarding wizard LWC crashes on step 3 Apex error leaving users stuck with no navigation or retry path.
Expected Answer
• Wrap each step in isolated child LWC catching and surfacing step-level errors
• Parent maintains step index and completed steps independent of child crash
• Show actionable error panel with Retry and Contact Support options
• Persist wizard progress to custom object or session storage for resume
• Log correlation Id from Apex errors for support lookup
• Disable Next until current step validates; allow Back always
• Graceful degrade: skip optional steps when non-critical services fail
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Never fail silently. Wrap each step in isolated child LWC catching and surfacing step-level errors. Implement retry with exponential backoff and a dead-letter queue for permanent failures. Wizards are state machines — step navigation must survive individual step component failures. Optimize for scale and operational observability.
Architect Perspective
Wizards are state machines — step navigation must survive individual step component failures.