The NgModule classes differ from JavaScript

An NgModule bounds declarable classes only. Declarables are the only classes that matter to the Angular compiler.
Nstead of defining all member classes in one giant file, you list the module's classes in the @NgModule.declarations list.
An NgModule can only export the declarable classes it owns or imports from other modules. It doesn't declare or export any other kind of class.
NgModule can extend the entire application with services by adding providers to the @NgModule.providers list.

The NgModule classes differ from JavaScript → is a → NgModule.

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The NgModule classes differ from JavaScript

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