Webpack 5 - Why Breaking Changes? What is next?
summary
Webpack 5 replaces the old in‑memory cache with a persistent filesystem cache and ships a new, extensible cache interface so plugins can persist artifacts across builds. The public compiler API is tightened and several plugin hooks are refactored, forcing migration of custom plugins but enabling multi‑process and long‑term caching optimizations. Early results report noticeably faster rebuilds and smaller long‑tail assets, but migration requires updating any code that relied on the old compiler or cache internals.
AI-written summary · about
chapters (6)
- 0:00Webpack 5 changes
- 4:49Long-term goals
- 8:11Module federation & caching
- 15:31Caching determinism
- 21:47Plugin system updates
- 27:36Experimental features








