LWCIntermediatebundle-sizestatic-resourcesperformance
Optimize bundle size and static resource loading
Real World Scenario
LWC loading 2MB chart library static resource slows first paint on cellular connections.
Expected Answer
• Lazy import dynamic modules where platform supports
• Split rarely used features into separate LWCs loaded on demand
• Compress and tree-shake third-party libs before static resource upload
• Load scripts in renderedCallback once with loadScript from platformResourceLoader
• Monitor component JS size in CI with thresholds
• Prefer platform charts over heavy D3 unless requirement justifies
• CDN external not available in Locker—optimize local bundle instead
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Direct answer: Lazy import dynamic modules where platform supports Also consider: Split rarely used features into separate LWCs loaded on demand In practice: Compress and tree-shake third-party libs before static resource upload Balance speed of delivery with maintainability.
Architect Perspective
Mobile field users pay per byte—bundle budget should be non-functional requirement.