- dev build
- Local server
- HMR(hot module replacement) refreshing page automatically for smooth development -File watching Algorithm -written in c++
- Caching - Faster Builds -Image Optimization (this is the most costly thing )
- Minification
- Bundling
- Compressing
- consistent Hashing
- code spliting Differential Bundling (after hosting app can open in all web engines like crome ,internet explorer) support older browers
- Better Error handling
- Hosting on HTTPS
- Tree shaking algo (removes unused code)
- Different development and production bundles