How to get the EmitsType of components in TypeScript ?

[zz541843]

There is no type prompt for calling component functions through Ref. after looking at the generic types in @vue/runtime-core, how can I extract types similar to objectemitsoptions in definecomponent?

[zz541843]

I tried many times through instancetype, but it didn't work

[zz541843]

One parameter type in the generic definecomponent is emitsoptions. It can be seen from the source code. The key is how to extract this type

[leopiccionia]

Extracting a generic argument in TypeScript typically looks like this (I haven't tested):

import type { DefineComponent } from 'vue'

export type ExtractEmits<T> = T extends DefineComponent<any, any, any, any, any, any, any, infer U> ? U : unknown

Perhaps #2179 can inspire you, too.

[zz541843]

Extracting a generic argument in TypeScript typically looks like this (I haven't tested):

import type { DefineComponent } from 'vue'

export type ExtractEmits<T> = T extends DefineComponent<any, any, any, any, any, any, any, infer U> ? U : unknown

Perhaps #2179 can inspire you, too.

Thank you very much! Why am I so stupid!