Question about avoiding relying on an event bus by using provide/inject

[Erwyn]

Hello there!

Reading through https://v3-migration.vuejs.org/breaking-changes/events-api#event-bus it is stated at the end that using an event bus is usually discouraged and can be avoided with:

Provide / inject can also be used for long-distance communication between components. It can help to avoid 'prop drilling', where props need to be passed down through many levels of components that don't need those props themselves.

Although I do see how this can help avoid props drilling I don’t see how this fixes the need for an event bus. If one want to stick to the one way data flow of props, the children still might need to advertise events for the provider to react to. How does Provide/Inject allow the "injected" component to call back the provider for events without having to manually bubble events through the whole stack ?

Thanks in advance!

[skirtles-code]

You can provide a function that can then be called by the injecting component.