Is it possible to implement an event bus based on import, Vue 3 cli?

Question

Vue.js

Hello, I have several pages with many components (different pages can have the same function names) can I make each page an event bus where each component can receive and emit an event to the page.
On Vue 2, I implemented this with

//main.js
global.context = new Object();
global.context.app = app;

and gave each page a field with an assigned context

//к примеру одна из страниц
 global.context.authorization = this;

//в каком либо компоненте страницы емиттил 
global.context.authorization.$emit(
          "authorizationMessage",
          this.t("Password fields didn't match")
        );
//и таким же образом онил

But since vue 3 relies heavily on imports, can I improve the approach to such event buses using imports...