Module: react

Tools to integrate Convex into React applications.

This module contains:

1. ConvexReactClient, a client for using Convex in React.
2. ConvexProvider, a component that stores this client in React context.
3. Authenticated, Unauthenticated and AuthLoading helper auth components.
4. Hooks useQuery, useMutation, useAction and more for accessing this client from your React components.

Usage

Creating the client

import { ConvexReactClient } from "convex/react";

// typically loaded from an environment variable
const address = "https://small-mouse-123.convex.cloud"
const convex = new ConvexReactClient(address);

Storing the client in React Context

import { ConvexProvider } from "convex/react";

<ConvexProvider client={convex}>
  <App />
</ConvexProvider>

Using the auth helpers

import { Authenticated, Unauthenticated, AuthLoading } from "convex/react";

<Authenticated>
  Logged in
</Authenticated>
<Unauthenticated>
  Logged out
</Unauthenticated>
<AuthLoading>
  Still loading
</AuthLoading>

Using React hooks

import { useQuery, useMutation } from "convex/react";
import { api } from "../convex/_generated/api";

function App() {
  const counter = useQuery(api.getCounter.default);
  const increment = useMutation(api.incrementCounter.default);
  // Your component here!
}

Classes

• ConvexReactClient

Interfaces

• ReactMutation
• ReactAction
• Watch
• WatchQueryOptions
• MutationOptions
• ConvexReactClientOptions

Type Aliases

AuthTokenFetcher

Ƭ AuthTokenFetcher: (args: { forceRefreshToken: boolean }) => Promise<string | null | undefined>

Type declaration

▸ (args): Promise<string | null | undefined>

An async function returning the JWT-encoded OpenID Connect Identity Token if available.

forceRefreshToken is true if the server rejected a previously returned token, and the client should try to fetch a new one.

See setAuth.

Parameters

Name	Type
args	Object
args.forceRefreshToken	boolean

Returns

Promise<string | null | undefined>

Defined in

browser/sync/authentication_manager.ts:20

---

ConvexAuthState

Ƭ ConvexAuthState: Object

Type representing the state of an auth integration with Convex.

Type declaration

Name	Type
isLoading	boolean
isAuthenticated	boolean

Defined in

react/ConvexAuthState.tsx:26

---

OptionalRestArgsOrSkip

Ƭ OptionalRestArgsOrSkip<FuncRef>: FuncRef["_args"] extends EmptyObject ? [args?: EmptyObject | "skip"] : [args: FuncRef["_args"] | "skip"]

Type parameters

Name	Type
FuncRef	extends FunctionReference<any>

Defined in

react/client.ts:561

---

Preloaded

Ƭ Preloaded<Query>: Object

The preloaded query payload, which should be passed to a client component and passed to usePreloadedQuery.

Type parameters

Name	Type
Query	extends FunctionReference<"query">

Type declaration

Name	Type
__type	Query
_name	string
_argsJSON	string
_valueJSON	string

Defined in

react/hydration.tsx:12

---

PaginatedQueryReference

Ƭ PaginatedQueryReference: FunctionReference<"query", "public", { paginationOpts: PaginationOptions }, PaginationResult<any>>

A FunctionReference that is usable with usePaginatedQuery.

This function reference must:

• Refer to a public query
• Have an argument named "paginationOpts" of type PaginationOptions
• Have a return type of PaginationResult.

Defined in

react/use_paginated_query.ts:29

---

UsePaginatedQueryResult

Ƭ UsePaginatedQueryResult<Item>: { results: Item[] ; loadMore: (numItems: number) => void } & { status: "LoadingFirstPage" ; isLoading: true } | { status: "CanLoadMore" ; isLoading: false } | { status: "LoadingMore" ; isLoading: true } | { status: "Exhausted" ; isLoading: false }

The result of calling the usePaginatedQuery hook.

This includes:

• results - An array of the currently loaded results.
• isLoading - Whether the hook is currently loading results.
• status - The status of the pagination. The possible statuses are:
  • "LoadingFirstPage": The hook is loading the first page of results.
  • "CanLoadMore": This query may have more items to fetch. Call loadMore to fetch another page.
  • "LoadingMore": We're currently loading another page of results.
  • "Exhausted": We've paginated to the end of the list.
• loadMore(n) A callback to fetch more results. This will only fetch more results if the status is "CanLoadMore".

Type parameters

Name
Item

Defined in

react/use_paginated_query.ts:430

---

PaginationStatus

Ƭ PaginationStatus: UsePaginatedQueryResult<any>["status"]

The possible pagination statuses in UsePaginatedQueryResult.

This is a union of string literal types.

Defined in

react/use_paginated_query.ts:458

---

PaginatedQueryArgs

Ƭ PaginatedQueryArgs<Query>: Expand<BetterOmit<FunctionArgs<Query>, "paginationOpts">>

Given a PaginatedQueryReference, get the type of the arguments object for the query, excluding the paginationOpts argument.

Type parameters

Name	Type
Query	extends PaginatedQueryReference

Defined in

react/use_paginated_query.ts:466

---

PaginatedQueryItem

Ƭ PaginatedQueryItem<Query>: FunctionReturnType<Query>["page"][number]

Given a PaginatedQueryReference, get the type of the item being paginated over.

Type parameters

Name	Type
Query	extends PaginatedQueryReference

Defined in

react/use_paginated_query.ts:475

---

UsePaginatedQueryReturnType

Ƭ UsePaginatedQueryReturnType<Query>: UsePaginatedQueryResult<PaginatedQueryItem<Query>>

The return type of usePaginatedQuery.

Type parameters

Name	Type
Query	extends PaginatedQueryReference

Defined in

react/use_paginated_query.ts:483

---

RequestForQueries

Ƭ RequestForQueries: Record<string, { query: FunctionReference<"query"> ; args: Record<string, Value> }>

An object representing a request to load multiple queries.

The keys of this object are identifiers and the values are objects containing the query function and the arguments to pass to it.

This is used as an argument to useQueries.

Defined in

react/use_queries.ts:126

Functions

useConvexAuth

▸ useConvexAuth(): Object

Get the ConvexAuthState within a React component.

This relies on a Convex auth integration provider being above in the React component tree.

Returns

Object

The current ConvexAuthState.

Name	Type
isLoading	boolean
isAuthenticated	boolean

Defined in

react/ConvexAuthState.tsx:43

---

ConvexProviderWithAuth

▸ ConvexProviderWithAuth(«destructured»): Element

A replacement for ConvexProvider which additionally provides ConvexAuthState to descendants of this component.

Use this to integrate any auth provider with Convex. The useAuth prop should be a React hook that returns the provider's authentication state and a function to fetch a JWT access token.

See Custom Auth Integration for more information.

Parameters

Name	Type
«destructured»	Object
› children?	ReactNode
› client	IConvexReactClient
› useAuth	() => { isLoading: boolean ; isAuthenticated: boolean ; fetchAccessToken: (args: { forceRefreshToken: boolean }) => Promise<null | string> }

Returns

Element

Defined in

react/ConvexAuthState.tsx:72

---

Authenticated

▸ Authenticated(«destructured»): null | Element

Renders children if the client is authenticated.

Parameters

Name	Type
«destructured»	Object
› children	ReactNode

Returns

null | Element

Defined in

react/auth_helpers.tsx:10

---

Unauthenticated

▸ Unauthenticated(«destructured»): null | Element

Renders children if the client is using authentication but is not authenticated.

Parameters

Name	Type
«destructured»	Object
› children	ReactNode

Returns

null | Element

Defined in

react/auth_helpers.tsx:23

---

AuthLoading

▸ AuthLoading(«destructured»): null | Element

Renders children if the client isn't using authentication or is in the process of authenticating.

Parameters

Name	Type
«destructured»	Object
› children	ReactNode

Returns

null | Element

Defined in

react/auth_helpers.tsx:37

---

useConvex

▸ useConvex(): ConvexReactClient

Get the ConvexReactClient within a React component.

This relies on the ConvexProvider being above in the React component tree.

Returns

ConvexReactClient

The active ConvexReactClient object, or undefined.

Defined in

react/client.ts:536

---

ConvexProvider

▸ ConvexProvider(props, deprecatedLegacyContext?): null | ReactElement<any, any>

Provides an active Convex ConvexReactClient to descendants of this component.

Wrap your app in this component to use Convex hooks useQuery, useMutation, and useConvex.

Parameters

Name	Type	Description
props	Object	an object with a client property that refers to a ConvexReactClient.
props.client	ConvexReactClient	-
props.children?	ReactNode	-
deprecatedLegacyContext?	any	Deprecated See React Docs

Returns

null | ReactElement<any, any>

Defined in

../../common/temp/node_modules/.pnpm/@types+react@18.3.5/node_modules/@types/react/ts5.0/index.d.ts:1115

---

useQuery

▸ useQuery<Query>(query, ...args): Query["_returnType"] | undefined

Load a reactive query within a React component.

This React hook contains internal state that will cause a rerender whenever the query result changes.

Throws an error if not used under ConvexProvider.

Type parameters

Name	Type
Query	extends FunctionReference<"query">

Parameters

Name	Type	Description
query	Query	a FunctionReference for the public query to run like api.dir1.dir2.filename.func.
...args	OptionalRestArgsOrSkip<Query>	The arguments to the query function or the string "skip" if the query should not be loaded.

Returns

Query["_returnType"] | undefined

the result of the query. If the query is loading returns undefined.

Defined in

react/client.ts:582

---

useMutation

▸ useMutation<Mutation>(mutation): ReactMutation<Mutation>

Construct a new ReactMutation.

Mutation objects can be called like functions to request execution of the corresponding Convex function, or further configured with optimistic updates.

The value returned by this hook is stable across renders, so it can be used by React dependency arrays and memoization logic relying on object identity without causing rerenders.

Throws an error if not used under ConvexProvider.

Type parameters

Name	Type
Mutation	extends FunctionReference<"mutation">

Parameters

Name	Type	Description
mutation	Mutation	A FunctionReference for the public mutation to run like api.dir1.dir2.filename.func.

Returns

ReactMutation<Mutation>

The ReactMutation object with that name.

Defined in

react/client.ts:634

---

useAction

▸ useAction<Action>(action): ReactAction<Action>

Construct a new ReactAction.

Action objects can be called like functions to request execution of the corresponding Convex function.

The value returned by this hook is stable across renders, so it can be used by React dependency arrays and memoization logic relying on object identity without causing rerenders.

Throws an error if not used under ConvexProvider.

Type parameters

Name	Type
Action	extends FunctionReference<"action">

Parameters

Name	Type	Description
action	Action	A FunctionReference for the public action to run like api.dir1.dir2.filename.func.

Returns

ReactAction<Action>

The ReactAction object with that name.

Defined in

react/client.ts:675

---

usePreloadedQuery

▸ usePreloadedQuery<Query>(preloadedQuery): Query["_returnType"]

Load a reactive query within a React component using a Preloaded payload from a Server Component returned by preloadQuery.

This React hook contains internal state that will cause a rerender whenever the query result changes.

Throws an error if not used under ConvexProvider.

Type parameters

Name	Type
Query	extends FunctionReference<"query">

Parameters

Name	Type	Description
preloadedQuery	Preloaded<Query>	The Preloaded query payload from a Server Component.

Returns

Query["_returnType"]

the result of the query. Initially returns the result fetched by the Server Component. Subsequently returns the result fetched by the client.

Defined in

react/hydration.tsx:34

---

usePaginatedQuery

▸ usePaginatedQuery<Query>(query, args, options): UsePaginatedQueryReturnType<Query>

Load data reactively from a paginated query to a create a growing list.

This can be used to power "infinite scroll" UIs.

This hook must be used with public query references that match PaginatedQueryReference.

usePaginatedQuery concatenates all the pages of results into a single list and manages the continuation cursors when requesting more items.

Example usage:

const { results, status, isLoading, loadMore } = usePaginatedQuery(
  api.messages.list,
  { channel: "#general" },
  { initialNumItems: 5 }
);

If the query reference or arguments change, the pagination state will be reset to the first page. Similarly, if any of the pages result in an InvalidCursor error or an error associated with too much data, the pagination state will also reset to the first page.

To learn more about pagination, see Paginated Queries.

Type parameters

Name	Type
Query	extends PaginatedQueryReference

Parameters

Name	Type	Description
query	Query	A FunctionReference to the public query function to run.
args	"skip" | Expand<BetterOmit<FunctionArgs<Query>, "paginationOpts">>	The arguments object for the query function, excluding the paginationOpts property. That property is injected by this hook.
options	Object	An object specifying the initialNumItems to be loaded in the first page.
options.initialNumItems	number	-

Returns

UsePaginatedQueryReturnType<Query>

A UsePaginatedQueryResult that includes the currently loaded items, the status of the pagination, and a loadMore function.

Defined in

react/use_paginated_query.ts:160

---

resetPaginationId

▸ resetPaginationId(): void

Reset pagination id for tests only, so tests know what it is.

Returns

void

Defined in

react/use_paginated_query.ts:409

---

optimisticallyUpdateValueInPaginatedQuery

▸ optimisticallyUpdateValueInPaginatedQuery<Query>(localStore, query, args, updateValue): void

Optimistically update the values in a paginated list.

This optimistic update is designed to be used to update data loaded with usePaginatedQuery. It updates the list by applying updateValue to each element of the list across all of the loaded pages.

This will only apply to queries with a matching names and arguments.

Example usage:

const myMutation = useMutation(api.myModule.myMutation)
.withOptimisticUpdate((localStore, mutationArg) => {

  // Optimistically update the document with ID `mutationArg`
  // to have an additional property.

  optimisticallyUpdateValueInPaginatedQuery(
    localStore,
    api.myModule.paginatedQuery
    {},
    currentValue => {
      if (mutationArg === currentValue._id) {
        return {
          ...currentValue,
          "newProperty": "newValue",
        };
      }
      return currentValue;
    }
  );

});

Type parameters

Name	Type
Query	extends PaginatedQueryReference

Parameters

Name	Type	Description
localStore	OptimisticLocalStore	An OptimisticLocalStore to update.
query	Query	A FunctionReference for the paginated query to update.
args	Expand<BetterOmit<FunctionArgs<Query>, "paginationOpts">>	The arguments object to the query function, excluding the paginationOpts property.
updateValue	(currentValue: PaginatedQueryItem<Query>) => PaginatedQueryItem<Query>	A function to produce the new values.

Returns

void

Defined in

react/use_paginated_query.ts:529

---

useQueries

▸ useQueries(queries): Record<string, any | undefined | Error>

Load a variable number of reactive Convex queries.

useQueries is similar to useQuery but it allows loading multiple queries which can be useful for loading a dynamic number of queries without violating the rules of React hooks.

This hook accepts an object whose keys are identifiers for each query and the values are objects of { query: FunctionReference, args: Record<string, Value> }. The query is a FunctionReference for the Convex query function to load, and the args are the arguments to that function.

The hook returns an object that maps each identifier to the result of the query, undefined if the query is still loading, or an instance of Error if the query threw an exception.

For example if you loaded a query like:

const results = useQueries({
  messagesInGeneral: {
    query: "listMessages",
    args: { channel: "#general" }
  }
});

then the result would look like:

{
  messagesInGeneral: [{
    channel: "#general",
    body: "hello"
    _id: ...,
    _creationTime: ...
  }]
}

This React hook contains internal state that will cause a rerender whenever any of the query results change.

Throws an error if not used under ConvexProvider.

Parameters

Name	Type	Description
queries	RequestForQueries	An object mapping identifiers to objects of {query: string, args: Record<string, Value> } describing which query functions to fetch.

Returns

Record<string, any | undefined | Error>

An object with the same keys as the input. The values are the result of the query function, undefined if it's still loading, or an Error if it threw an exception.

Defined in

react/use_queries.ts:60