Evertvdw

@ktquez I get a different error now with [email protected] ``` Argument of type '(app: App, options?: VueAnnouncerOptions | undefined) => void' is not assignable to parameter of type 'Plugin_2'. Type...

This is very annoying indeed, can this be fixed?

I was working on a version using a QTree myself, here is a codepen: https://codepen.io/Evertvdw/full/Bajqedj

Yes, I get this error also with Typescript 3.8.3

I am also having this issue consistently, also a large enterprise app. If I have some time left I will try to create a reproduction project, but that will probably...

@Akryum I have not yet created a reproduction but I can see in the code where it goes wrong. In my application the `COMPONENT_ADDED` [hook ](https://github.com/vuejs/devtools/blob/main/packages/app-backend-core/src/index.ts#L168) is called before this...

@BenceSzalai Here is my error stack:  I am just using the router-view normally, no `keep-alive` used anywhere.

Ok, nobody does unit tests in combination with class components? I also ran into another issue with Vue-class-components in another library. Maybe that is related? https://github.com/quasarframework/quasar/issues/8915#issuecomment-822000736 Before with class components...

Ok, it seems importing Vue from `vue-class-component` instead of `vue-property-decorator` fixes this issue. However when you have a component which extends from a mixin, you get this issue again. Even...

Created an issue on vue-test-utils about this: https://github.com/vuejs/vue-test-utils-next/issues/544#issuecomment-831098165 Although the issue seems to be originating from `vue-jest` :)