Not specific to Nuxt, but I posted this elsewhere and thought it might help here. There’s been some discussion around the way plugins are handled in Vue 3 here:
opened 10:17PM - 26 Oct 21 UTC
closed 12:22PM - 27 Oct 21 UTC
**Bug 🐞**
### What is the current behavior?
Following [these instructions]… (https://www.algolia.com/doc/guides/building-search-ui/installation/vue/#directly-in-your-page), the InstantSearch cannot be initialized due to an error on the library.
```
instantsearch.umd.js:5 Uncaught TypeError: window.Vue.use is not a function
at instantsearch.umd.js:5
at vue-instantsearch.js:1
at vue-instantsearch.js:1
```
[This is the line](https://github.com/algolia/vue-instantsearch/blob/bfbae88d4def8e5230ff89a4d3c6dae22bc745c0/src/instantsearch.umd.js#L3-L6).
### Make a sandbox with the current behavior
https://codesandbox.io/s/nifty-taussig-wh5m4?file=/index.html
(No console error is displayed because the error happens in the library).
### What is the expected behavior?
To actually work.
### Does this happen only in specific situations?
Only when using Vue 3 and the instructions ["Directly in your page"](https://www.algolia.com/doc/guides/building-search-ui/installation/vue/#directly-in-your-page).
### What is the proposed solution?
For what I can understand, checking the Vue version before adding as a plugin shouldn't break anything, as adding a plugin differs from Vue 2 to Vue 3. Specifically, [the developer needs to explicitly add the plugin to the app instance](https://v3.vuejs.org/guide/plugins.html#using-a-plugin).
If Vue 2 is not detected (`Vue.version` should work), `use()` shouldn't be called.
### What is the version you are using?
- Vue InstantSearch 4.1.0
- Vue 3.2.0
Let me know if you encounter anything else Nuxt 3 specific – it’d be good to capture it in a thread.
