What are the best practices for using provide/inject in Vue 3?

What are the best practices for using provide/inject in Vue 3?

In Vue 3, the provide/inject API is great for dependency injection. Best practices include using it for deeply nested components, keeping the provided values reactive, and avoiding overuse to maintain clarity.

Can you give an example of how to implement it?

Sure! In a parent component, you can use provide to share a value:

import { provide, ref } from 'vue';

export default {
  setup() {
    const sharedValue = ref('Hello from parent!');
    provide('myValue', sharedValue);
  }
};

Then, in a child component, you can use inject to access it:

import { inject } from 'vue';

export default {
  setup() {
    const myValue = inject('myValue');
    return { myValue };
  }
};

What should I avoid when using provide/inject?

Avoid using provide/inject for passing props or state that can be managed through Vue's reactivity system. It can lead to confusion and make your components less reusable.

Are there any performance considerations?

Yes, while provide/inject is efficient, be mindful of the reactivity system. If you provide a non-reactive value, changes won't trigger updates in the injected components.