How to access props in "extended" component

[incutonez]

Let's say I have 2 components: CompBase and CompExt. CompExt is basically a "pass-through"/extended component of CompBase, where its props are the same as CompBase. However, in CompExt, I need to access the props to do some additional logic. e.g. this example

I can obviously redefine the props, but then I'd have to add a v-bind="$props" in the template, which feels wrong. e.g. this example

I could also try accessing useAttrs, but then the props aren't formally processed yet... isUpdate: true would come in as is-update: "", and obviously I don't have proper typing or auto completion in my IDE.

So what would be the "proper" way to do what I'm trying to do?

[rudyxu1102]

See vuejs/rfcs#477. Discussion is welcome.