Access value within component tag

Question

In my component I’m trying to take the value inside the tag of this same component to display it in the html of it, however, this component is the main component of my application, What I’m wanting is kind of this:

<teste>Testando... 1... 2... 3...</teste>

And within my component I play the "Testing... 1... 2... 3..." into a variable or show it in component html.

just like the Vue.js slot...

In my index.html I put:

<teste>Testando... 1... 2... 3...</teste>

And I’d like to get the text from my app.component.ts