How to implement oAuth authorization with Angular?

Question

Laravel

In the first version of the project, all the code and templates were in one project. We used laravel + standard blade templating engine. Now the 2nd version is being developed, it was decided to make the backend purely api, and the client on angular. The backing is written in laravel + passport package for oAuth2 authorization. The server will receive requests from the mobile and web applications. How to implement authorization in angular? Or maybe use some other architectural solution?