feat(options): add 'vueInstanceCreatedCallback' that is triggered after new Vue()

Author: karol-f

README.md

@@ -163,6 +163,11 @@ Additional, optional, third parameter to `Vue.customElement()` is options object
     return RootComponentDefinition;
   },
 
+  // Vue instance is created
+  vueInstanceCreatedCallback() {
+    console.info('vueInstanceCreatedCallback');
+  },
+  
   // in case of using vue-custom-element with modals, we destroy  it after defined timeout
   destroyTimeout: 3000,
 

src/vue-custom-element.js

@@ -28,9 +28,11 @@ function install(Vue) {
             asyncComponentPromise.then((lazyLoadedComponent) => {
               const lazyLoadedComponentProps = getProps(lazyLoadedComponent);
               createVueInstance(this, Vue, lazyLoadedComponent, lazyLoadedComponentProps, options);
+              typeof options.vueInstanceCreatedCallback === 'function' && options.vueInstanceCreatedCallback.call(this);
             });
           } else {
             createVueInstance(this, Vue, componentDefinition, props, options);
+            typeof options.vueInstanceCreatedCallback === 'function' && options.vueInstanceCreatedCallback.call(this);
           }
         }