Organizing an application solely by composing components comes with some challenges. Angular supports the concept of application modules, which essentially are just containers around components that help structure your application.
The concept of NgModule was introduced to mainly solve the following issues:
- Explicit template parsing: With the use of modules and by declaring all components, directives, pipes, and providers which are used inside of your application module, Angular is able to parse HTML templates very explicitly. This is really helpful when it comes to debugging. Let's say you're including an element within one of your component templates which does not match any of the selectors specified by the components ...
