Feature/infinite queries

docs/react/guides/infinite-queries.md

@@ -103,42 +103,11 @@ function Projects() {
 
 When an infinite query becomes `stale` and needs to be refetched, each group is fetched `sequentially`, starting from the first one. This ensures that even if the underlying data is mutated, we're not using stale cursors and potentially getting duplicates or skipping records. If an infinite query's results are ever removed from the queryCache, the pagination restarts at the initial state with only the initial group being requested.
 
-## What if I need to pass custom information to my query function?
-
-By default, the variable returned from `getNextPageParam` will be supplied to the query function, but in some cases, you may want to override this. You can pass custom variables to the `fetchNextPage` function which will override the default variable like so:
-
-[//]: # 'Example3'
-
-```tsx
-function Projects() {
-  const fetchProjects = ({ pageParam = 0 }) =>
-    fetch('/api/projects?cursor=' + pageParam)
-
-  const {
-    status,
-    data,
-    isFetching,
-    isFetchingNextPage,
-    fetchNextPage,
-    hasNextPage,
-  } = useInfiniteQuery({
-    queryKey: ['projects'],
-    queryFn: fetchProjects,
-    getNextPageParam: (lastPage, pages) => lastPage.nextCursor,
-  })
-
-  // Pass your own page param
-  const skipToCursor50 = () => fetchNextPage({ pageParam: 50 })
-}
-```
-
-[//]: # 'Example3'
-
 ## What if I want to implement a bi-directional infinite list?
 
 Bi-directional lists can be implemented by using the `getPreviousPageParam`, `fetchPreviousPage`, `hasPreviousPage` and `isFetchingPreviousPage` properties and functions.
 
-[//]: # 'Example4'
+[//]: # 'Example3'
 
 ```tsx
 useInfiniteQuery({
@@ -149,13 +118,13 @@ useInfiniteQuery({
 })
 ```
 
-[//]: # 'Example4'
+[//]: # 'Example3'
 
 ## What if I want to show the pages in reversed order?
 
 Sometimes you may want to show the pages in reversed order. If this is case, you can use the `select` option:
 
-[//]: # 'Example5'
+[//]: # 'Example4'
 
 ```tsx
 useInfiniteQuery({
@@ -168,13 +137,13 @@ useInfiniteQuery({
 })
 ```
 
-[//]: # 'Example5'
+[//]: # 'Example4'
 
 ## What if I want to manually update the infinite query?
 
 Manually removing first page:
 
-[//]: # 'Example6'
+[//]: # 'Example5'
 
 ```tsx
 queryClient.setQueryData(['projects'], (data) => ({
@@ -183,11 +152,11 @@ queryClient.setQueryData(['projects'], (data) => ({
 }))
 ```
 
-[//]: # 'Example6'
+[//]: # 'Example5'
 
 Manually removing a single value from an individual page:
 
-[//]: # 'Example7'
+[//]: # 'Example6'
 
 ```tsx
 const newPagesArray =
@@ -201,11 +170,11 @@ queryClient.setQueryData(['projects'], (data) => ({
 }))
 ```
 
-[//]: # 'Example7'
+[//]: # 'Example6'
 
 Make sure to keep the same data structure of pages and pageParams!
 
-[//]: # 'Example8'
+[//]: # 'Example7'
 
 ## What if I want to limit the number of pages?
 
@@ -219,7 +188,7 @@ This is made possible by using the `maxPages` option in conjunction with `getNex
 
 In the following example only 3 pages are kept in the query data pages array. If a refetch is needed, only 3 pages will be refetched sequentially.
 
-[//]: # 'Example9'
+[//]: # 'Example7'
 
 ```tsx
 useInfiniteQuery({

docs/react/guides/migrating-to-v5.md

@@ -248,7 +248,7 @@ This in turn will enable other frameworks to have the same functionality in a fr
 import { queryClient } from './my-client'
 
 const { data } = useQuery(
-   {
+  {
     queryKey: ['users', id],
     queryFn: () => fetch(...),
 -   context: customContext
@@ -265,6 +265,26 @@ However, refetching all pages might lead to UI inconsistencies. Also, this optio
 
 The v5 includes a new `maxPages` option for infinite queries to limit the number of pages to store in the query data and to refetch. This new feature handles the use cases initially identified for the `refetchPage` page feature without the related issues.
 
+### Infinite queries now need a `defaultPageParam`
+
+Previously, we've passed `undefined` to the `queryFn` as `pageParam`, and you could assign a default value to the `pageParam` parameter in the `queryFn` function signature. This had the drawback of storing `undefined` in the `queryCache`, which is not serializable.
+
+Instead, you now have to pass an explicit `defaultPageParam` to the infinite query options. This will be used as the `pageParam` for the first page:
+
+```diff
+useInfiniteQuery({
+   queryKey,
+-  queryFn: ({ pageParam = 0 }) => fetchSomething(pageParam),
++  queryFn: ({ pageParam }) => fetchSomething(pageParam),
++  defaultPageParam: 0,
+   getNextPageParam: (lastPage) => lastPage.next,
+})
+```
+
+### Manual mode for infinite queries has been removed
+
+Previously, we've allowed to overwrite the `pageParams` that would be returned from `getNextPageParam` or `getPreviousPageParam` by passing a `pageParam` value directly to `fetchNextPage` or `fetchPreviousPage`. This feature didn't work at all with refetches and wasn't widely known or used. This also means that `getNextPagParam` is now required for infinite queries.
+
 [//]: # 'FrameworkBreakingChanges'
 
 ## React Query Breaking Changes

docs/react/reference/useInfiniteQuery.md

@@ -14,7 +14,8 @@ const {
   ...result
 } = useInfiniteQuery({
   queryKey,
-  queryFn: ({ pageParam = 1 }) => fetchPage(pageParam),
+  queryFn: ({ pageParam }) => fetchPage(pageParam),
+  defaultPageParam: 1,
   ...options,
   getNextPageParam: (lastPage, allPages) => lastPage.nextCursor,
   getPreviousPageParam: (firstPage, allPages) => firstPage.prevCursor,
@@ -30,12 +31,15 @@ The options for `useInfiniteQuery` are identical to the [`useQuery` hook](../ref
   - The function that the query will use to request data.
   - Receives a [QueryFunctionContext](../guides/query-functions#queryfunctioncontext)
   - Must return a promise that will either resolve data or throw an error.
-  - Make sure you return the data *and* the `pageParam` if needed for use in the props below.
-- `getNextPageParam: (lastPage, allPages) => unknown | undefined`
+- `defaultPageParam: TPageParam`
+  - **Required**
+  - The default page param to use when fetching the first page.
+- `getNextPageParam: (lastPage, allPages) => TPageParam | undefined`
+  - **Required**
   - When new data is received for this query, this function receives both the last page of the infinite list of data and the full array of all pages.
   - It should return a **single variable** that will be passed as the last optional parameter to your query function.
   - Return `undefined` to indicate there is no next page available.
-- `getPreviousPageParam: (firstPage, allPages) => unknown | undefined`
+- `getPreviousPageParam: (firstPage, allPages) => TPageParam | undefined`
   - When new data is received for this query, this function receives both the first page of the infinite list of data and the full array of all pages.
   - It should return a **single variable** that will be passed as the last optional parameter to your query function.
   - Return `undefined` to indicate there is no previous page available.

docs/vue/guides/infinite-queries.md

@@ -54,24 +54,7 @@ const {
 ```
 
 [//]: # 'Example'
-[//]: # 'Example3'
-
-```tsx
-const fetchProjects = ({ pageParam = 0 }) =>
-  fetch('/api/projects?cursor=' + pageParam)
-
-const { fetchNextPage } = useInfiniteQuery({
-  queryKey: ['projects'],
-  queryFn: fetchProjects,
-  getNextPageParam: (lastPage, pages) => lastPage.nextCursor,
-})
-
-// Pass your own page param
-const skipToCursor50 = () => fetchNextPage({ pageParam: 50 })
-```
-
-[//]: # 'Example3'
-[//]: # 'Example7'
+[//]: # 'Example6'
 
 ```tsx
 const newPagesArray =
@@ -85,4 +68,4 @@ queryClient.setQueryData(['projects'], (data) => ({
 }))
 ```
 
-[//]: # 'Example7'
+[//]: # 'Example6'

examples/react/algolia/src/algolia.ts

@@ -16,7 +16,7 @@ type SearchOptions = {
 export async function search<TData>({
   indexName,
   query,
-  pageParam = 0,
+  pageParam,
   hitsPerPage = 10,
 }: SearchOptions): Promise<{
   hits: Hit<TData>[];

examples/react/algolia/src/useAlgolia.ts

@@ -22,6 +22,7 @@ export default function useAlgolia<TData>({
     queryKey: ["algolia", indexName, query, hitsPerPage],
     queryFn: ({ pageParam }) =>
       search<TData>({ indexName, query, pageParam, hitsPerPage }),
+    defaultPageParam: 0,
     getNextPageParam: (lastPage) => lastPage?.nextPage,
     staleTime,
     cacheTime,

examples/react/infinite-query-with-max-pages/pages/index.js

@@ -31,10 +31,11 @@ function Example() {
     hasPreviousPage,
   } = useInfiniteQuery({
     queryKey: ['projects'],
-    queryFn: async ({ pageParam = 0 }) => {
+    queryFn: async ({ pageParam }) => {
       const res = await axios.get('/api/projects?cursor=' + pageParam)
       return res.data
     },
+    defaultPageParam: 0,
     getPreviousPageParam: (firstPage) => firstPage.previousId ?? undefined,
     getNextPageParam: (lastPage) => lastPage.nextId ?? undefined,
     maxPages: 3,

examples/react/load-more-infinite-scroll/pages/index.js

@@ -35,10 +35,11 @@ function Example() {
     hasPreviousPage,
   } = useInfiniteQuery({
     queryKey: ['projects'],
-    queryFn: async ({ pageParam = 0 }) => {
+    queryFn: async ({ pageParam }) => {
       const res = await axios.get('/api/projects?cursor=' + pageParam)
       return res.data
     },
+    defaultPageParam: 0,
     getPreviousPageParam: (firstPage) => firstPage.previousId ?? undefined,
     getNextPageParam: (lastPage) => lastPage.nextId ?? undefined,
   })