LWCAdvanceddynamic-componentsmetadataarchitecture
Implement dynamic component rendering with lwc:component and metadata
Real World Scenario
Admin configures record page sections mapping to different LWCs per industry vertical without code deployment.
Expected Answer
• Custom Metadata drives component selector name and property JSON
• lwc:component lwc:is directive renders dynamic child at runtime
• Validate component name against allowlist before render
• Parse and pass @api props from metadata JSON safely
• Fallback component when metadata references deprecated LWC
• Error boundary child isolates dynamic component failures
• Test each metadata configuration row in integration test suite
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Security first: Custom Metadata drives component selector name and property JSON. Enforce CRUD/FLS explicitly — `with sharing` alone is not enough. lwc:component lwc:is directive renders dynamic child at runtime. Dynamic LWC is power feature—allowlist and fallback prevent metadata typo page crashes. Optimize for scale and operational observability.
Architect Perspective
Dynamic LWC is power feature—allowlist and fallback prevent metadata typo page crashes.