[Bug Report][3.5.7] v-breadcrumbs typing broken

[frederikheld]

Environment

Vuetify Version: 3.5.7
Vue Version: 3.4.15
Browsers: Firefox 123.0
OS: Ubuntu undefined

Steps to reproduce

Can't exactly reproduce on the playground.

If I do this in my own setup, the first example will render the following breadcrumbs:

{ "title": "foo" } / { "title": "bar" }

This clearly shows that the item has a key title.

The second example will render the following breacrumb (as expected):

foo / bar

But in {{ item.title }} the title will have a curly red underline indicating the following error:

Property 'title' does not exist on type '"foo" | "bar"'.
  Property 'title' does not exist on type '"foo"'.ts-plugin(2339)

I'm using VSCode with the official plugin.

So this seems to be a typing issue.

Expected Behavior

The complete type definition for item in the template (shown by VSCode on hover) is

(property) item: ((arg: {
    item: BreadcrumbItem;
    index: number;
}) => VNode<RendererNode, RendererElement, {
    [key: string]: any;
}>[]) & ((arg: {
    item: "foo" | "bar";
    index: number;
}) => VNode<...>[])

So I would expect it to use BreadcrumbItem type.

I tried to cast it as BreadcrumbItem but didn't find any way to get that type :-(

Actual Behavior

TS - once again - causes way more problems than it solves.

Comment

A third example shows how explicitly creating the item object fixes the TS error. But this is overhead code that should not be necessary.

Reproduction Link

https://play.vuetifyjs.com/#...

[frederikheld]

Might be related to #15371

[frederikheld]

Thanks a lot for the fix! <3