InstanceType doesn't work for components with generic

[avinean]

There are 2 components.
One with generic and another one without generic.

Some parent component tries to take an instance type.
The one with generic throws an error

Reproduction
https://play.vuejs.org/#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

[so1ve]

Duplicate of #3206

[so1ve]

Solution: You should use ComponentExposed from the vue-component-type-helpers packages instead of TypeScript's built-in ReturnType or InstanceType utilities since volar defines generic components as functional components.

[avinean]

@so1ve
This worths to be mentioned in docs

[cernymatej]

@so1ve Why not include the ComponentExposed type in vue? Since it already has some utility types, I don' think it would be a bad idea... https://vuejs.org/api/utility-types

[so1ve]

@cernymatej vuejs/core#5408 vuejs/core#9556