How to access Vue instance from outside?

Question

Vue.js

Hello, please tell me how to call a Vue instance method from outside. Tried mainVue.$options.methods, doesn't work.

Answer 1

I did this:

let myVue = new Vue({
     el: "#app",
     data:  {},
     methods: {
       some(){
       console.log(1);
    }
  }
});
myVue.some();

https://jsfiddle.net/Lhfzcf1k/
Do you really need to?