The Hitchhiker's Guide to the Modular Galaxy
summary
Explains that Angular libraries ship multiple formats so consumers get tree-shakable code and legacy fallbacks: packages include UMD, FESM (flat ES modules), and ES2015/ES5 builds; the build tool ng-packagr produces those outputs and webpack produces a CommonJS-like runtime in the final app. Shows that browsers load ES2015 with module/non-module script tags, that dynamic import creates separate lazy bundles, and that using ESModules vs NgModules yields measurable bundle-size reduction in practice.
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chapters (5)
- 0:00Start
- 2:01Angular Package Format
- 4:38Patterns for modularity
- 13:53Standardized syntax
- 15:25Dynamic import








