Vue emits "Extraneous non-emits event listeners" warning for events on RouterView

[jez9999]

Reproduction

https://stackblitz.com/edit/vitejs-vite-jy1j3d

Steps to reproduce the bug

Listen for an event on router-view which is emitted by a child component. Vue will display a warning about "Extraneous non-emits event listeners" even though a child component emits the event, if the initial path loaded renders a child component that doesn't emit the event.

Expected behavior

Vue detects that one of the child components that may be rendered by the router view emits the event, and doesn't give the warning.

Actual behavior

Vue gives the warning.

Additional information

No response

[posva]

This is not related to the router: the Home component doesn't declare that emit, that's why you see the warning.

[jez9999]

@posva But why should the Home component need to? There needs to be a mechanism to allow any child component that may be rendered by a router-view to emit events through the router-view.