- Dev Build
- Local Server
- HMR - Hot Module Replacement
- File Watching Algorithm - written in C++
- Caching - Faster Builds
- Image Optimization
- Minification
- Bundling
- Compression
- Consistent Hashing
- Code Spliting
- Differential Bundling - to support older browsers
- Diagnostics
- Error Handling
- HTTPs
- Tree Shaking - remove unused files
- Different dev and prod bundles
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Default export default Component; import Compenent from "path"
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Named export const Component; import {Component} from "path"
- normal JS utility functions
- 2 major hooks useState(); - used to generate state variables useEffect();