Angular & Signals (283 Qs)•Part 9: NgModules, Providers, NgZone & Injector Hierarchies (213 - 255)
What are the differences between ngmodule and javascript module?
Below are the main differences between Angular NgModule and javascript module,
| NgModule | JavaScript module |
|---|---|
| NgModule bounds declarable classes only | There is no restriction classes |
| List the module's classes in declarations array only | Can define all member classes in one giant file |
| It only export the declarable classes it owns or imports from other modules | It can export any classes |
| Extend the entire application with services by adding providers to provides array | Can't extend the application with services |
Practical Code Example
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// NgModule vs ES Module:
// ES Module: JavaScript language feature (import / export) managing file scope
// NgModule: Angular concept managing template compilation scope and DI providers