# Nuxt Query

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Nuxt Query is a module for integrating [Tanstack Query](https://tanstack.com/query/latest/docs/framework/vue/overview) (formerly known as Vue Query) into your Nuxt application, providing a powerful solution for fetching, caching, synchronizing and updating server state.

- [✨  Release Notes](/CHANGELOG.md)

## Features

<!-- Highlight some of the features your module provide here -->
- ⚙️ &nbsp; 0 config integration
- 💪 &nbsp; Full support of Vue Query config settings
- 🏆 &nbsp; Support for complex `QueryClient` setup with handlers via hooks
- 🤖 &nbsp; Configurable auto-imports for Vue Query composables
- 🧩 &nbsp; Nuxt DevTools integration for easy debugging

## Installation

You can add the module via the Nuxt CLI:

```bash
npx nuxi module add @peterbud/nuxt-query
```

or via npm:

```bash
pnpm dlx nuxi module add @peterbud/nuxt-query
```

## Configuration

To configure Nuxt Query, update your `nuxt.config.ts` specifying the options you want for Vue Query:

```typescript
// nuxt.config.ts
export default defineNuxtConfig({
  modules: ['@peterbud/nuxt-query'],
  nuxtQuery: {
    // Specify which Vue Query composable(s) to auto-import
    autoImports: ['useQuery', 'useMutation'],

    // Enable / disable Nuxt DevTools integration (default: true).
    devtools: true,

    // These are the same options as the QueryClient 
    // from @tanstack/vue-query, will be passed 
    // to the QueryClient constructor
    // More details: https://tanstack.com/query/v5/docs/reference/QueryClient
    queryClientOptions: {
      defaultOptions: {
        queries: {
          // for example disable refetching on window focus
          refetchOnWindowFocus: false,

          // or change the default refetch interval
          refetchInterval: 5000,
        },
      },
    },
  },
})
```

Then, in your component, you can define and run queries with the `useQuery` composable (auto-imported):

```vue
// app.vue
<script setup>
const getPosts = async () => {
  await new Promise(resolve => setTimeout(resolve, 2000))
  return await $fetch('https://jsonplaceholder.typicode.com/posts')
}

const { isPending, isFetching, isError, data, error } = useQuery({
  queryKey: ['posts'],
  queryFn: getPosts,
})
</script>
```

That's it! You can now use Nuxt Query in your Nuxt app ✨

## Module Hooks

Nuxt Query provides a hook that you can use in your application if you need a more complex setup for Vue Query, like custom query client with centralized `onSuccess` or `onError` handlers, which would not be possible to configure with the options available in the `nuxt.config.ts`.

The hook is called `nuxt-query:configure` and you can use it in a plugin to return a custom `QueryClient` object in the following way:

```typescript
// plugins/nuxt-query.ts
import { QueryClient, QueryCache } from '@tanstack/vue-query'

export default defineNuxtPlugin({
  enforce: 'pre',
  setup(nuxtApp) {
    nuxtApp.hook('nuxt-query:configure', (getPluginOptions) => {
      const clientOptions = useRuntimeConfig().public.nuxtQuery?.queryClientOptions || {}

      const queryClient = new QueryClient({
        ...clientOptions,
        queryCache: new QueryCache({
          onSuccess: (data: unknown) => console.log('onSuccess', { data }),
        }),
      })

      // return the plugin options which will be used
      // by the module at startup
      getPluginOptions(queryClient)
    })
  },
})
```

## Nuxt DevTools Integration

Nuxt Query integrates with Nuxt DevTools to provide a dedicated tab for Vue Query, where you can inspect the state of your queries, view their cache, and properties, initiate refetch or remove certain queries and more.

![Nuxt DevTools](assets/devtools.png)

## Contribution

<details>
  <summary>Local development</summary>
  
  ```bash
  # Install dependencies
  npm install
  
  # Generate type stubs
  npm run dev:prepare
  
  # Develop with the playground
  npm run dev:client
  
  # Build the playground
  npm run dev:build
  
  # Run ESLint
  npm run lint
  
  # Run Vitest
  npm run test
  npm run test:watch
  
  # Build the module
  npm run build

  # Release new version
  npm run release
  ```

</details>

If you want to report a bug, please make sure you have a minimal reproduction of the issue. You can use the [minimal example](https://stackblitz.com/github/peterbud/nuxt-query/tree/main/examples/minimal?title=Nuxt-Query%20Minimal%20Example) to create a reproduction.

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