Doesn't play nice with Decorated Typescript

[johnnyshankman]

When using: https://github.com/vuejs/vue-class-component

And exporting a component using @Component syntax, this plugin dies and complains about the following:

 Cannot read properties of undefined (reading '_init')

Non-decorated TS exports work just fine. Any help? Rewriting my whole codebase to be non-decorated would take quite some time.

https://github.com/karol-f/vue-custom-element#javascript---register-with-vue-custom-element

Seems to only understand this one very specific output.

Seems to trip over:

        var Sub = function VueComponent(options) {
            this._init(options);
        };

Problem to me seems that we already have a VueComponent, that's what @Component shims the output of your export to. Can we add a check to see if this is already done and support this other export type?

Me logging my export that gets passed in to the second param of Vue.customElement

[medialwerk]

I think it is related to #219