Preparing a Project
First, let's use Angular CLI tool and generate a new project called "dependency-injection".
ng new dependency-injection
cd dependency-injection
Next, generate two components component1 and component2, as in the example below:
ng g component component1
ng g component component2
Finally, update the main application component template to use both components we have just created:
<!-- src/app/app.component.html -->
<app-component1></app-component1>
<app-component2></app-component2>
If you now run the application with the ng serve --open command you should see two default component templates
that get generated automatically by Angular CLI:
component1 works!
component2 works!
You now have a working project ready for DI experiments.