SPA in native JS?

Question

AJAX

I want to create a pure JS SPA application. At first, everything is fine:
1) the router, depending on the configuration of the routes, dynamically inserts html into the mounted element, without reloading the pages;
2) binder creates custom events with specific details;
3) the listener catches them and gives the details to the models.

But then difficulties begin:
1) title is static. It is written in the routes configuration, but if the user is logged in, then you need to substitute the login for the title, for example: profile | login;
2) an unauthorized user should not have access to the account pages;
3) pages have dynamic parts: user login, number of subscribers/friends, etc.

Link to the project:https://github.com/polak228/Kverlit
What is the best way to implement SPA in native JS? Do you have examples of real projects?

Answer 1

Try SVELTE , everything has already been invented there, it turns out native JS without a framework.
Otherwise, you will write your own framework)