Angular2 Not Recognizing component From Imported Module
You have to add the BreadcrumbComponent to the exports array, and only import the CommonModule. You can only import the BrowserModule once in your app (usually at the bootstrap module):
@NgModule({ imports: [ CommonModule ], declarations: [ BreadcrumbComponent ], exports: [ BreadcrumbComponent ]})export class BreadcrumbModule {}Things inside the declarations array are components/directives/pipes used within the module itself. If you want to expose these to other modules importing your module, then they should be added to the exports array