Mastering React Component Library Optimization
summary
A 40+ component React library shrinks from ~430KB to ~160KB by three concrete moves: switch to ES modules so the bundler can tree-shake, stop importing whole libraries (replace lodash imports with modular/lodash‑es calls), and publish per-component exports plus set sideEffects:false so unused files are dropped. Demo uses a repo with a consumer app, bundle visualizer and rebuilds the library live, and the approach reliably cuts bundle weight and CSS bleed in practice.
AI-written summary · about
chapters (11)
- 0:00Introduction to React optimization
- 3:14Meet the speaker
- 4:01What is Tree Shaking
- 6:56Module bundling methods
- 10:33Project structure setup
- 12:40Initial bundle analysis
- 15:37Optimizing third-party dependencies
- 18:12Handling side effects
- 21:26Modular exports in library
- 24:29Final bundle size reduction
- 25:12Optimization checklist summary
related talks
19mLessons from adopting React Compiler
24mCase Study: Creating a Component Library in React JS
30mWebpack – The React Parts
16mThe Art of Tree-Shaking
07mBuilding Component Libraries for Cross Team Use with React
27mUnderstanding JavaScript Libraries via React and the React Ecosystem
33mMaximising performance with React code-splitting techniques
43mBuilding a component based library with React