Vue version

3.2，.ce.vue (web components)

Link to minimal reproduction

online demo

Steps to reproduce

In a MyComp.ce.vue SFC:

props: {
  someFn: {
    type: Function as PropType<() => Promise<void>>,
  },
}

then, usage

<my-comp :some-fn="() => {}" />

In MyComp.ce.vue, the prop: someFn print as string.
I found that in dom the some-fn is shown as attribute, I think it should be auto added in dom object property, similar with object or array prop.

What is expected?

the prop: someFn passed should be function.

What is actually happening?

function prop passed as string

System Info

No response

Any additional comments?

No response

my result is ok. i think maybe,it's TypeScript issue.

We require Issues to come with a reproduction. We can reopen once one has been provided.

@LinusBorg I've update an online demo in details, and I found that it seems a case problem, I'm not sure if this is by design.