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perf(nuxt): avoid multiple calls to `getCachedData` (#28472)

This commit is contained in:
Martin André 2024-08-13 21:24:32 +02:00 committed by Daniel Roe
parent 9397def672
commit b13582205a
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GPG Key ID: CBC814C393D93268
2 changed files with 22 additions and 9 deletions
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20
packages/nuxt/src/app/composables/asyncData.ts
View File

@ -252,18 +252,17 @@ export function useAsyncData<
console.warn('[nuxt] `boolean` values are deprecated for the `dedupe` option of `useAsyncData` and will be removed in the future. Use \'cancel\' or \'defer\' instead.')
}
// TODO: make more precise when v4 lands
const hasCachedData = () => options.getCachedData!(key, nuxtApp) != null
// Create or use a shared asyncData entity
const initialCachedData = options.getCachedData!(key, nuxtApp)
const hasCachedData = initialCachedData != null
if (!nuxtApp._asyncData[key] || !options.immediate) {
nuxtApp.payload._errors[key] ??= asyncDataDefaults.errorValue
const _ref = options.deep ? ref : shallowRef
nuxtApp._asyncData[key] = {
data: _ref(options.getCachedData!(key, nuxtApp) ?? options.default!()),
pending: ref(!hasCachedData()),
data: _ref(hasCachedData ? initialCachedData : options.default!()),
pending: ref(!hasCachedData),
error: toRef(nuxtApp.payload._errors, key),
status: ref('idle'),
_default: options.default!,
@ -285,8 +284,11 @@ export function useAsyncData<
(nuxtApp._asyncDataPromises[key] as any).cancelled = true
}
// Avoid fetching same key that is already fetched
if ((opts._initial || (nuxtApp.isHydrating && opts._initial !== false)) && hasCachedData()) {
return Promise.resolve(options.getCachedData!(key, nuxtApp))
if ((opts._initial || (nuxtApp.isHydrating && opts._initial !== false))) {
const cachedData = opts._initial ? initialCachedData : options.getCachedData!(key, nuxtApp)
if (cachedData != null) {
return Promise.resolve(cachedData)
}
}
asyncData.pending.value = true
asyncData.status.value = 'pending'
@ -375,7 +377,7 @@ export function useAsyncData<
onUnmounted(() => cbs.splice(0, cbs.length))
}
if (fetchOnServer && nuxtApp.isHydrating && (asyncData.error.value || hasCachedData())) {
if (fetchOnServer && nuxtApp.isHydrating && (asyncData.error.value || initialCachedData != null)) {
// 1. Hydration (server: true): no fetch
asyncData.pending.value = false
asyncData.status.value = asyncData.error.value ? 'error' : 'success'

11
test/nuxt/composables.test.ts
View File

@ -227,6 +227,17 @@ describe('useAsyncData', () => {
`)
})
it('should only call getCachedData once', async () => {
const getCachedData = vi.fn(() => ({ val: false }))
const { data } = await useAsyncData(() => Promise.resolve({ val: true }), { getCachedData })
expect(data.value).toMatchInlineSnapshot(`
{
"val": false,
}
`)
expect(getCachedData).toHaveBeenCalledTimes(1)
})
it('should use default while pending', async () => {
const promise = useAsyncData(() => Promise.resolve('test'), { default: () => 'default' })
const { data, pending } = promise