getCurrentInstance type not correct

Version

2.7.0

Steps to reproduce

vue2.7 getCurrentInstance type was not match vue3 & @vue/composition-api

export function getCurrentInstance(): { proxy: Component } | null {
  return currentInstance && { proxy: currentInstance }
}

see:

• https://github.com/vuejs/composition-api/blob/main/src/runtimeContext.ts#L184
• https://github.com/vuejs/core/blob/main/packages/runtime-core/src/component.ts#L213

What is expected?

has correct type

What is actually happening?

not match

[yyx990803]

1. @vue/composition-api’s implementation is not the source of truth - 2.7 has intentional deviations from it.

2. Only exposing proxy is intentional, because other properties on the internal instance is considered, well, internal. You should refactor any code that relies on anything other than proxy.

   This is necessary because relying on the internal instance properties when using Composition API is a sign that you are misusing it. It makes your code less reusable AND introduces risk of compatibility with future versions of Vue. We exposed getCurrentInstance mostly for official libraries that need additional internal access, not for userland application code. It was mistakenly documented in WIP v3 docs but is no longer considered a public API.

3. Vue 3 will likely start showing warnings when you rely on properties other than proxy soon.

[ulissepress]

@yyx990803 considering that this API is not public, how do you suggest to get the vue app instance (the one created with createApp() ) from any Vue component (created using <script setup>) ?

Currently I was using getCurrentInstance().appContext.app