What is @license and @publicApi inside comments in Angular or JavaScript

Question

I built my Angular app then looked at the built code where I found @license or @publicApi inside comments like you can see in image attached below. I don't know what this thing is and How to create them. Please if anyone know then kindly comment your answer below, It'll be helpful for me to know something new.

Answer 1

This jsDoc annotations used by Google. A good guide in writing those: https://devdocs.io/jsdoc/

For example the @license can be explained: https://jsdoc.app/tags-license.html

 The @license tag identifies the software license that applies to any portion of your code.

 You can use any text to identify the license you are using. 

The public api one seems like it's something Google specific. All these are annotations. They don't change the way the code works.

JSDoc's purpose is to document the API of your JavaScript application or library. It is assumed that you will want to document things like modules, namespaces, classes, methods, method parameters, and so on.