NgModules

NgModules

NgModules help organize an application into cohesive blocks of functionality.

An NgModule is a class adorned with the @NgModule decorator function. @NgModule takes a metadata object that tells Angular how to compile and run module code. It identifies the module's own components, directives, and pipes, making some of them public so external components can use them. @NgModule may add service providers to the application dependency injectors. And there are many more options covered here.

Before reading this page, read the The Root Module page, which introduces NgModules and the essentials of creating and maintaining a single root AppModule for the entire application.

This page covers NgModules in greater depth.