$attrs or ReturnType<typeof useAttrs()> is always Datawhen fallthroughAttributes: true

[ferferga]

Vue - Official extension or vue-tsc version

2.1.10

VSCode version

1.95.3

Vue version

3.5.12

TypeScript version

5.6.3

System Info

No response

package.json dependencies

"dependencies": {
  "vue": "3.5.12"
},
"devDependencies": {
  "@types/node": "22.9.0",
  "@vitejs/plugin-vue": "5.2.0",
  "typescript": "5.6.3",
  "vite": "5.4.11",
  "vue-tsc": "2.1.10"
}

Steps to reproduce

1. Open the plaground link
2. Hover over attrs: the type will be Data instead of ButtonHTMLAttributes

const attrs = useAttrs();

3. Run npm run check: You will see that

What is expected?

The type of the fallthrough attributes should be Data when there is no v-bind="$attrs" assigned to an element. But when it is assigned, it should be of the assigned element's attributes type.

What is actually happening?

The type of the fallthrough attributes always is Data, both on useAttrs and $attrs.

Link to minimal reproduction

https://stackblitz.com/edit/vue3-vite-typescript-starter-aahszk?file=src%2Fcomponents%2FVButton.vue

Any additional comments?

No response