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Repovive

Bundle Size Optimization - Performance Optimization | Frontend System Design Interview Prep | Repovive

Repovive.

Frontend System Design Interview Prep17 sections · 206 units12h total

Open in Course

Bundle Size Optimization

Shipping less JavaScript

Large JavaScript bundles slow initial load. Reduce what you ship.

Code splitting: Break bundle into chunks loaded on demand.

const Modal = lazy(() => import('./Modal'));

Tree shaking: Remove unused code during build.

Analyze your bundle: Use webpack-bundle-analyzer or similar tools.

Strategies:

Route-based splitting: Each route loads its own chunk
Component-based splitting: Heavy components load on demand
Remove unused dependencies
Use lighter alternatives (date-fns vs moment)