Vue - Official extension or vue-tsc version

2.2.0

VSCode version

Not using it

Vue version

3.5.13

TypeScript version

5.6.3

System Info

System:
    OS: Linux 5.15 Ubuntu 22.04.4 LTS 22.04.4 LTS (Jammy Jellyfish)
    CPU: (16) x64 12th Gen Intel(R) Core(TM) i7-1260P
    Memory: 10.44 GB / 11.68 GB
    Container: Yes
    Shell: 5.1.16 - /bin/bash
  Binaries:
    Node: 20.12.2 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/bin/yarn
    npm: 10.5.0 - /usr/local/bin/npm
    pnpm: 9.9.0 - ~/.local/share/pnpm/pnpm

package.json dependencies

{
  "dependencies": {
    "vue": "^3.5.13"
  },
  "devDependencies": {
    "@tsconfig/node22": "^22.0.0",
    "@types/node": "^22.9.3",
    "@vitejs/plugin-vue": "^5.2.1",
    "@vue/tsconfig": "^0.7.0",
    "npm-run-all2": "^7.0.1",
    "typescript": "~5.6.3",
    "vite": "^6.0.1",
    "vite-plugin-vue-devtools": "^7.6.5",
    "vue-tsc": "^2.1.10"
  }
}

Steps to reproduce

Try to use useSlots/check for slots in template

What is expected?

No error is thrown

What is actually happening?

This condition will always return true since this function is always defined. Did you mean to call it instead? error

Also, I wasn't able to reproduce it in hello world, but I also had "any" resolution for useSlots and $slots.

Also this is obviously not valid code but the error is weird

We always had slots type resolution error in OAPI with "this assigment will always return true" even though it's by documentation

But it seems like this time it got more broken than before

Link to minimal reproduction

https://github.com/daniluk4000/vue-volar-slots-bug

Any additional comments?

Only happening since 2.2.0. 2.1.10 produces correct errors (if we assume $slots check in OAPI should return this always true error)