Slots defined with SlotsType in "Functional Signature" defineComponent do not get a type

[rijenkii]

Vue version

3.3.8

Link to minimal reproduction

https://play.vuejs.org/#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

Steps to reproduce

I have defined a component with functional defineComponent signature and assigned some slots.

<script setup lang="ts">
import { SetupContext, SlotsType, defineComponent, h } from "vue";

const Comp = defineComponent(
  (
    _1: {},
    _2: SetupContext<
      {},
      SlotsType<{ default?(data: { foo: string; bar: number }): any }>
    >,
  ) =>
    () =>
      null,
  {
    slots: Object as SlotsType<{ default: { foo: string; bar: number } }>,
  }
);

h(
  Comp,
  null,
  {
    default: (data) => null,
//            ^? (parameter) data: any
  }
);
</script>

<template>
  <Comp v-slot="data"></Comp>
  <!-- when hovering over `data` it says `data: any` -->
</template>

What is expected?

I would have expected the type of slot prop to be set.

What is actually happening?

Type of slot prop is any, both in h and in <template>

System Info

No response

Any additional comments?

When using regular defineComponent signature by removing the first argument, prop type appears in <template> but not in h.

[pikax]

This is caused because Functional components are very barebones, basically what we return is the function with props.

One issue sort of related microsoft/TypeScript#14729, since it would be nice to also add some typing for using in JSX