📄 tanstack/query/v4/docs/framework/vue/guides/suspense

NOTE: Suspense mode for Vue Query is experimental, same as Vue's Suspense itself. These APIs WILL change and should not be used in production unless you lock both your Vue and Vue Query versions to patch-level versions that are compatible with each other.

Vue Query can also be used with Vue's new Suspense API's.

To do that you need to wrap your suspendable component with Suspense component provided by Vue

vue

<script setup>
import SuspendableComponent from './SuspendableComponent.vue'
</script>

<template>
  <Suspense>
    <template #default>
      <SuspendableComponent />
    </template>
    <template #fallback>
      <div>Loading...</div>
    </template>
  </Suspense>
</template>


<script setup>
import SuspendableComponent from './SuspendableComponent.vue'
</script>

<template>
  <Suspense>
    <template #default>
      <SuspendableComponent />
    </template>
    <template #fallback>
      <div>Loading...</div>
    </template>
  </Suspense>
</template>

And change your setup function in suspendable component to be async. Then you can use async suspense function that is provided by vue-query.

vue

<script>
import { defineComponent } from 'vue'
import { useQuery } from '@tanstack/vue-query'

const todoFetcher = async () =>
  await fetch('https://jsonplaceholder.cypress.io/todos').then((response) =>
    response.json(),
  )
export default defineComponent({
  name: 'SuspendableComponent',
  async setup() {
    const { data, suspense } = useQuery(['todos'], todoFetcher)
    await suspense()

    return { data }
  },
})
</script>


<script>
import { defineComponent } from 'vue'
import { useQuery } from '@tanstack/vue-query'

const todoFetcher = async () =>
  await fetch('https://jsonplaceholder.cypress.io/todos').then((response) =>
    response.json(),
  )
export default defineComponent({
  name: 'SuspendableComponent',
  async setup() {
    const { data, suspense } = useQuery(['todos'], todoFetcher)
    await suspense()

    return { data }
  },
})
</script>

Fetch-on-render vs Render-as-you-fetch
--------------------------------------

Out of the box, Vue Query in suspense mode works really well as a Fetch-on-render solution with no additional configuration. This means that when your components attempt to mount, they will trigger query fetching and suspend, but only once you have imported them and mounted them. If you want to take it to the next level and implement a Render-as-you-fetch model, we recommend implementing Prefetching on routing callbacks and/or user interactions events to start loading queries before they are mounted and hopefully even before you start importing or mounting their parent components.

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