@so1ve I tested this locally and it doesn't seem to fix #13104 - is this something you still intend to work on? We might be able to get this in the final patch release before EOL.

I'll take a look and add tests

I need some help, I couldn't get emits from extends and mixin work...

This fix is beyond my capabilities and I hope someone else can fix it.

@so1ve I tested this locally and it doesn't seem to fix #13104 - is this something you still intend to work on? We might be able to get this in the final patch release before EOL.

#13133

https://github.com/vuejs/vue/pull/13133/files#diff-d26123bca327fbaf4e0ce33d7085fcaf9f4a39be4f76a1d0c15e0843afb1af9fR153

Maybe this is the key line to resolve the error of #13104

No, your implementation doesn't take extends and mixin into account

No, your implementation doesn't take extends and mixin into account

Yes, you are right, I'm working on it. But now I have some questions. I see you add a test that you can get emit functions fromprops in setup function, but the props does not expose those functions. It is a right type test?

image

Yes, because it can be undefined

Does it mean that If a component use props.onFoo in runtime, the function will never work? Is the onFoo only used for type inference?

Yes, seemed to be true

image

#13133

I think it works with extends and mixin now.