How to set binded attribute to custom component in Vue

Question

Hello I'm trying to add a custom Vue component to my template using the DOM, I already setted the properties, but I can't set the associated attribute of events in the custom component. Here is my buttonVue.vue component (child component) :

export default {
emits:['action','isAuth'],
data:function(){
    return {msg:this.textDisplay()}
},
 methods:{
    textDisplay(){
        return this.$emit('isAuth')?'Sign in with Microsoft':'Sign out from Microsoft'
    }
 }
}
</script>

parent component:

 insertBtnComponent){
    var ComponentClass = Vue.extend(buttonVue)
    var instance = new ComponentClass({
    propsData:{class:"buttonMs" ,style:" position: static ;",
    'action':this.isUserAuthenticated()?this.signOut():this.signInUser(),
    'isAuth':this.isUserAuthenticated()
   }
 })
  let selector = document.querySelector(".classNAMEofDiv");
  instance.$mount()
  selector.appendChild(instance.$el)

I would appreciate any hints on my problem, thanks in advance.