What is a routed entry component?

The components referenced in router configuration are called as routed entry components. This routed entry component defined in a route definition as below,

const routes: Routes = [
{
  path: '',
  component: TodoListComponent // router entry component
}
];

Since router definition requires you to add the component in two places (router and entryComponents), these components are always entry components.

Note: The compilers are smart enough to recognize a router definition and automatically add the router component into entryComponents.