@reduxjs/toolkit

@reduxjs/toolkit

Version 1.9.3
Published 28 days ago
12.8 MB
4 dependencies
MIT license

Install

npm i @reduxjs/toolkit

yarn add @reduxjs/toolkit

pnpm add @reduxjs/toolkit

Overview

The official, opinionated, batteries-included toolset for efficient Redux development

Index

Variables

variable addListener

const addListener: BaseActionCreator<
    ListenerEntry<unknown, ThunkDispatch<unknown, unknown, AnyAction>>,
    'listenerMiddleware/add',
    never,
    never
> &
    AddListenerOverloads<
        {
            payload: ListenerEntry<
                unknown,
                ThunkDispatch<unknown, unknown, AnyAction>
            >;
            type: 'listenerMiddleware/add';
        },
        unknown,
        ThunkDispatch<unknown, unknown, AnyAction>,
        unknown,
        unknown
    >;

Modifiers
- @public

variable clearAllListeners

const clearAllListeners: ActionCreatorWithoutPayload<string>;

Modifiers
- @public

variable createAsyncThunk

const createAsyncThunk: CreateAsyncThunk<AsyncThunkConfig>;

variable createDraftSafeSelector

const createDraftSafeSelector: any;

"Draft-Safe" version of reselect's createSelector: If an immer-drafted object is passed into the resulting selector's first argument, the selector will act on the current draft value, instead of returning a cached value that might be possibly outdated if the draft has been modified since.
Modifiers
- @public

variable removeListener

const removeListener: BaseActionCreator<
    ListenerEntry<unknown, ThunkDispatch<unknown, unknown, AnyAction>>,
    'listenerMiddleware/remove',
    never,
    never
> &
    AddListenerOverloads<
        {
            payload: ListenerEntry<
                unknown,
                ThunkDispatch<unknown, unknown, AnyAction>
            >;
            type: 'listenerMiddleware/remove';
        },
        unknown,
        ThunkDispatch<unknown, unknown, AnyAction>,
        any,
        UnsubscribeListenerOptions
    >;

Modifiers
- @public

variable SHOULD_AUTOBATCH

const SHOULD_AUTOBATCH: string;

Functions

function autoBatchEnhancer

autoBatchEnhancer: (options?: AutoBatchOptions) => StoreEnhancer;

A Redux store enhancer that watches for "low-priority" actions, and delays notifying subscribers until either the queued callback executes or the next "standard-priority" action is dispatched.
This allows dispatching multiple "low-priority" actions in a row with only a single subscriber notification to the UI after the sequence of actions is finished, thus improving UI re-render performance.
Watches for actions with the action.meta[SHOULD_AUTOBATCH] attribute. This can be added to action.meta manually, or by using the prepareAutoBatched helper.
By default, it will queue a notification for the end of the event loop tick. However, you can pass several other options to configure the behavior: - {type: 'tick'}: queues using queueMicrotask` (default) - {type: 'timer, timeout: number}: queues using setTimeout - {type: 'raf'}: queues using requestAnimationFrame - `{type: 'callback', queueNotification: (notify: () => void) => void}: lets you provide your own callback

function configureStore

configureStore: <
    S = any,
    A extends Action = AnyAction,
    M extends Middlewares<S> = [ThunkMiddleware<S, AnyAction>],
    E extends Enhancers = [StoreEnhancer]
>(
    options: ConfigureStoreOptions<S, A, M, E>
) => EnhancedStore<S, A, M, E>;

A friendly abstraction over the standard Redux createStore() function.
Parameter options
The store configuration.
Returns
A configured Redux store.
Modifiers
- @public

function createAction

createAction: {
    <P = void, T extends string = string>(type: T): PayloadActionCreator<P, T>;
    <PA extends PrepareAction<any>, T extends string = string>(
        type: T,
        prepareAction: PA
    ): IfPrepareActionMethodProvided<
        PA,
        _ActionCreatorWithPreparedPayload<PA, T>,
        IsAny<
            ReturnType<PA>['payload'],
            ActionCreatorWithPayload<any, T>,
            IsUnknown<
                ReturnType<PA>['payload'],
                ActionCreatorWithNonInferrablePayload<T>,
                IfVoid<
                    ReturnType<PA>['payload'],
                    ActionCreatorWithoutPayload<T>,
                    IfMaybeUndefined<
                        ReturnType<PA>['payload'],
                        ActionCreatorWithOptionalPayload<
                            ReturnType<PA>['payload'],
                            T
                        >,
                        ActionCreatorWithPayload<ReturnType<PA>['payload'], T>
                    >
                >
            >
        >
    >;
};

A utility function to create an action creator for the given action type string. The action creator accepts a single argument, which will be included in the action object as a field called payload. The action creator function will also have its toString() overriden so that it returns the action type, allowing it to be used in reducer logic that is looking for that action type.
Parameter type
The action type to use for created actions.
Parameter prepare
(optional) a method that takes any number of arguments and returns { payload } or { payload, meta }. If this is given, the resulting action creator will pass its arguments to this method to calculate payload & meta.
Modifiers
- @public

function createEntityAdapter

createEntityAdapter: <T>(options?: {
    selectId?: IdSelector<T>;
    sortComparer?: false | Comparer<T>;
}) => EntityAdapter<T>;

Parameter options
Modifiers
- @public

function createImmutableStateInvariantMiddleware

createImmutableStateInvariantMiddleware: (
    options?: ImmutableStateInvariantMiddlewareOptions
) => Middleware;

Creates a middleware that checks whether any state was mutated in between dispatches or during a dispatch. If any mutations are detected, an error is thrown.
Parameter options
Middleware options.
Modifiers
- @public

function createListenerMiddleware

createListenerMiddleware: <
    S = unknown,
    D extends Dispatch<AnyAction> = ThunkDispatch<S, unknown, AnyAction>,
    ExtraArgument = unknown
>(
    middlewareOptions?: CreateListenerMiddlewareOptions<ExtraArgument>
) => ListenerMiddlewareInstance<S, D, ExtraArgument>;

Modifiers
- @public

function createReducer

createReducer: {
    <S extends unknown>(
        initialState: S | (() => S),
        builderCallback: (builder: ActionReducerMapBuilder<S>) => void
    ): ReducerWithInitialState<S>;
    <S extends unknown, CR extends CaseReducers<S, any> = CaseReducers<S, any>>(
        initialState: S | (() => S),
        actionsMap: CR,
        actionMatchers?: ActionMatcherDescriptionCollection<S>,
        defaultCaseReducer?: CaseReducer<S, AnyAction>
    ): any;
};

A utility function that allows defining a reducer as a mapping from action type to *case reducer* functions that handle these action types. The reducer's initial state is passed as the first argument.
Parameter initialState
State | (() => State): The initial state that should be used when the reducer is called the first time. This may also be a "lazy initializer" function, which should return an initial state value when called. This will be used whenever the reducer is called with undefined as its state value, and is primarily useful for cases like reading initial state from localStorage.
Parameter builderCallback
(builder: Builder) => void A callback that receives a *builder* object to define case reducers via calls to builder.addCase(actionCreatorOrType, reducer).
Remarks
The body of every case reducer is implicitly wrapped with a call to produce() from the [immer](https://github.com/mweststrate/immer) library. This means that rather than returning a new state object, you can also mutate the passed-in state object directly; these mutations will then be automatically and efficiently translated into copies, giving you both convenience and immutability.
This overload accepts a callback function that receives a builder object as its argument. That builder provides addCase, addMatcher and addDefaultCase functions that may be called to define what actions this reducer will handle.
Example 1
import { createAction, createReducer, AnyAction, PayloadAction, } from "@reduxjs/toolkit"; const increment = createAction<number>("increment"); const decrement = createAction<number>("decrement"); function isActionWithNumberPayload( action: AnyAction ): action is PayloadAction<number> { return typeof action.payload === "number"; } const reducer = createReducer( { counter: 0, sumOfNumberPayloads: 0, unhandledActions: 0, }, (builder) => { builder .addCase(increment, (state, action) => { // action is inferred correctly here state.counter += action.payload; }) // You can chain calls, or have separate `builder.addCase()` lines each time .addCase(decrement, (state, action) => { state.counter -= action.payload; }) // You can apply a "matcher function" to incoming actions .addMatcher(isActionWithNumberPayload, (state, action) => {}) // and provide a default case if no other handlers matched .addDefaultCase((state, action) => {}); } );
Modifiers
- @public
A utility function that allows defining a reducer as a mapping from action type to *case reducer* functions that handle these action types. The reducer's initial state is passed as the first argument.
The body of every case reducer is implicitly wrapped with a call to produce() from the [immer](https://github.com/mweststrate/immer) library. This means that rather than returning a new state object, you can also mutate the passed-in state object directly; these mutations will then be automatically and efficiently translated into copies, giving you both convenience and immutability.
This overload accepts an object where the keys are string action types, and the values are case reducer functions to handle those action types.
Parameter initialState
State | (() => State): The initial state that should be used when the reducer is called the first time. This may also be a "lazy initializer" function, which should return an initial state value when called. This will be used whenever the reducer is called with undefined as its state value, and is primarily useful for cases like reading initial state from localStorage.
Parameter actionsMap
An object mapping from action types to _case reducers_, each of which handles one specific action type.
Parameter actionMatchers
An array of matcher definitions in the form {matcher, reducer}. All matching reducers will be executed in order, independently if a case reducer matched or not.
Parameter defaultCaseReducer
A "default case" reducer that is executed if no case reducer and no matcher reducer was executed for this action.
Example 1
const counterReducer = createReducer(0, { increment: (state, action) => state + action.payload, decrement: (state, action) => state - action.payload }) // Alternately, use a "lazy initializer" to provide the initial state // (works with either form of createReducer) const initialState = () => 0 const counterReducer = createReducer(initialState, { increment: (state, action) => state + action.payload, decrement: (state, action) => state - action.payload })
Action creators that were generated using [createAction](./createAction) may be used directly as the keys here, using computed property syntax:
const increment = createAction('increment') const decrement = createAction('decrement') const counterReducer = createReducer(0, { [increment]: (state, action) => state + action.payload, [decrement.type]: (state, action) => state - action.payload })
Modifiers
- @public

function createSerializableStateInvariantMiddleware

createSerializableStateInvariantMiddleware: (
    options?: SerializableStateInvariantMiddlewareOptions
) => Middleware;

Creates a middleware that, after every state change, checks if the new state is serializable. If a non-serializable value is found within the state, an error is printed to the console.
Parameter options
Middleware options.
Modifiers
- @public

function createSlice

createSlice: <
    State,
    CaseReducers extends SliceCaseReducers<State>,
    Name extends string = string
>(
    options: CreateSliceOptions<State, CaseReducers, Name>
) => Slice<State, CaseReducers, Name>;

A function that accepts an initial state, an object full of reducer functions, and a "slice name", and automatically generates action creators and action types that correspond to the reducers and state.
The reducer argument is passed to createReducer().
Modifiers
- @public

function findNonSerializableValue

findNonSerializableValue: (
    value: unknown,
    path?: string,
    isSerializable?: (value: unknown) => boolean,
    getEntries?: (value: unknown) => [string, any][],
    ignoredPaths?: IgnorePaths,
    cache?: WeakSet<object>
) => NonSerializableValue | false;

Modifiers
- @public

function getDefaultMiddleware

getDefaultMiddleware: <
    S = any,
    O extends Partial<GetDefaultMiddlewareOptions> = {
        thunk: true;
        immutableCheck: true;
        serializableCheck: true;
    }
>(
    options?: O
) => MiddlewareArray<ExcludeFromTuple<[ThunkMiddlewareFor<S, O>], never>>;

Returns any array containing the default middleware installed by configureStore(). Useful if you want to configure your store with a custom middleware array but still keep the default set.
The default middleware used by configureStore().
Modifiers
- @public
Deprecated
Prefer to use the callback notation for the middleware option in configureStore to access a pre-typed getDefaultMiddleware instead.

function getType

getType: <T extends string>(actionCreator: PayloadActionCreator<any, T>) => T;

Returns the action type of the actions created by the passed createAction()-generated action creator (arbitrary action creators are not supported).
Parameter action
The action creator whose action type to get.
Returns
The action type used by the action creator.
Modifiers
- @public

function isAllOf

isAllOf: <Matchers extends Matcher<any>[]>(
    ...matchers: Matchers
) => (
    action: any
) => action is UnionToIntersection<ActionFromMatcher<Matchers[number]>>;

A higher-order function that returns a function that may be used to check whether an action matches all of the supplied type guards or action creators.
Parameter matchers
The type guards or action creators to match against.
Modifiers
- @public

function isAnyOf

isAnyOf: <Matchers extends Matcher<any>[]>(
    ...matchers: Matchers
) => (action: any) => action is ActionFromMatcher<Matchers[number]>;

A higher-order function that returns a function that may be used to check whether an action matches any one of the supplied type guards or action creators.
Parameter matchers
The type guards or action creators to match against.
Modifiers
- @public

function isAsyncThunkAction

isAsyncThunkAction: {
    (): (action: any) => action is UnknownAsyncThunkAction;
    <AsyncThunks extends [AnyAsyncThunk, ...AnyAsyncThunk[]]>(
        ...asyncThunks: AsyncThunks
    ): (action: any) => action is ActionsFromAsyncThunk<AsyncThunks[number]>;
    (action: any): action is UnknownAsyncThunkAction;
};

A higher-order function that returns a function that may be used to check whether an action was created by an async thunk action creator.
Modifiers
- @public
A higher-order function that returns a function that may be used to check whether an action belongs to one of the provided async thunk action creators.
Parameter asyncThunks
(optional) The async thunk action creators to match against.
Modifiers
- @public
Tests if action is a thunk action
Modifiers
- @public

function isFulfilled

isFulfilled: {
    (): (
        action: any
    ) => action is PayloadAction<
        unknown,
        string,
        { arg: unknown; requestId: string; requestStatus: 'fulfilled' },
        never
    >;
    <AsyncThunks extends [AnyAsyncThunk, ...AnyAsyncThunk[]]>(
        ...asyncThunks: AsyncThunks
    ): (
        action: any
    ) => action is ActionFromMatcher<AsyncThunks[number]['fulfilled']>;
    (action: any): action is PayloadAction<
        unknown,
        string,
        { arg: unknown; requestId: string; requestStatus: 'fulfilled' },
        never
    >;
};

A higher-order function that returns a function that may be used to check whether an action was created by an async thunk action creator, and that the action is fulfilled.
Modifiers
- @public
A higher-order function that returns a function that may be used to check whether an action belongs to one of the provided async thunk action creators, and that the action is fulfilled.
Parameter asyncThunks
(optional) The async thunk action creators to match against.
Modifiers
- @public
Tests if action is a fulfilled thunk action
Modifiers
- @public

function isImmutableDefault

isImmutableDefault: (value: unknown) => boolean;

The default isImmutable function.
Modifiers
- @public

function isPending

isPending: {
    (): (
        action: any
    ) => action is PayloadAction<
        undefined,
        string,
        { arg: unknown; requestId: string; requestStatus: 'pending' },
        never
    >;
    <AsyncThunks extends [AnyAsyncThunk, ...AnyAsyncThunk[]]>(
        ...asyncThunks: AsyncThunks
    ): (action: any) => action is ActionFromMatcher<AsyncThunks[number]['pending']>;
    (action: any): action is PayloadAction<
        undefined,
        string,
        { arg: unknown; requestId: string; requestStatus: 'pending' },
        never
    >;
};

A higher-order function that returns a function that may be used to check whether an action was created by an async thunk action creator, and that the action is pending.
Modifiers
- @public
A higher-order function that returns a function that may be used to check whether an action belongs to one of the provided async thunk action creators, and that the action is pending.
Parameter asyncThunks
(optional) The async thunk action creators to match against.
Modifiers
- @public
Tests if action is a pending thunk action
Modifiers
- @public

function isPlain

isPlain: (val: any) => boolean;

Returns true if the passed value is "plain", i.e. a value that is either directly JSON-serializable (boolean, number, string, array, plain object) or undefined.
Parameter val
The value to check.
Modifiers
- @public

function isPlainObject

isPlainObject: (value: unknown) => value is object;

Returns true if the passed value is "plain" object, i.e. an object whose prototype is the root Object.prototype. This includes objects created using object literals, but not for instance for class instances.
Parameter value
The value to inspect.
Returns
{boolean} True if the argument appears to be a plain object.
Modifiers
- @public

function isRejected

isRejected: {
    (): (
        action: any
    ) => action is PayloadAction<
        unknown,
        string,
        {
            arg: unknown;
            requestId: string;
            requestStatus: 'rejected';
            aborted: boolean;
            condition: boolean;
        } & ({ rejectedWithValue: true } | ({ rejectedWithValue: false } & {})),
        SerializedError
    >;
    <AsyncThunks extends [AnyAsyncThunk, ...AnyAsyncThunk[]]>(
        ...asyncThunks: AsyncThunks
    ): (action: any) => action is ActionFromMatcher<AsyncThunks[number]['rejected']>;
    (action: any): action is PayloadAction<
        unknown,
        string,
        {
            arg: unknown;
            requestId: string;
            requestStatus: 'rejected';
            aborted: boolean;
            condition: boolean;
        } & ({ rejectedWithValue: true } | ({ rejectedWithValue: false } & {})),
        SerializedError
    >;
};

A higher-order function that returns a function that may be used to check whether an action was created by an async thunk action creator, and that the action is rejected.
Modifiers
- @public
A higher-order function that returns a function that may be used to check whether an action belongs to one of the provided async thunk action creators, and that the action is rejected.
Parameter asyncThunks
(optional) The async thunk action creators to match against.
Modifiers
- @public
Tests if action is a rejected thunk action
Modifiers
- @public

function isRejectedWithValue

isRejectedWithValue: {
    (): (
        action: any
    ) => action is PayloadAction<
        unknown,
        string,
        {
            arg: unknown;
            requestId: string;
            requestStatus: 'rejected';
            aborted: boolean;
            condition: boolean;
        } & ({ rejectedWithValue: true } | ({ rejectedWithValue: false } & {})),
        SerializedError
    >;
    <AsyncThunks extends [AnyAsyncThunk, ...AnyAsyncThunk[]]>(
        ...asyncThunks: AsyncThunks
    ): (
        action: any
    ) => action is RejectedWithValueActionFromAsyncThunk<AsyncThunks[number]>;
    (action: any): action is PayloadAction<
        unknown,
        string,
        {
            arg: unknown;
            requestId: string;
            requestStatus: 'rejected';
            aborted: boolean;
            condition: boolean;
        } & ({ rejectedWithValue: true } | ({ rejectedWithValue: false } & {})),
        SerializedError
    >;
};

A higher-order function that returns a function that may be used to check whether an action was created by an async thunk action creator, and that the action is rejected with value.
Modifiers
- @public
A higher-order function that returns a function that may be used to check whether an action belongs to one of the provided async thunk action creators, and that the action is rejected with value.
Parameter asyncThunks
(optional) The async thunk action creators to match against.
Modifiers
- @public
Tests if action is a rejected thunk action with value
Modifiers
- @public

function miniSerializeError

miniSerializeError: (value: any) => SerializedError;

Serializes an error into a plain object. Reworked from https://github.com/sindresorhus/serialize-error
Modifiers
- @public

function nanoid

nanoid: (size?: number) => string;

Modifiers
- @public

function prepareAutoBatched

prepareAutoBatched: <T>() => (payload: T) => { payload: T; meta: unknown };

function unwrapResult

unwrapResult: <R extends UnwrappableAction>(
    action: R
) => UnwrappedActionPayload<R>;

Modifiers
- @public

Classes

class MiddlewareArray

class MiddlewareArray<Middlewares extends Middleware<any, any>[]> extends Array<
    Middlewares[number]
> {}

Modifiers
- @public

constructor

constructor(...items: Middleware<any, any>[]);

property [Symbol.species]

static readonly [Symbol.species]: any;

method concat

concat: {
    <AdditionalMiddlewares extends readonly Middleware<any, any>[]>(
        items: AdditionalMiddlewares
    ): MiddlewareArray<[...Middlewares, ...AdditionalMiddlewares]>;
    <AdditionalMiddlewares extends readonly Middleware<any, any>[]>(
        ...items: AdditionalMiddlewares
    ): MiddlewareArray<[...Middlewares, ...AdditionalMiddlewares]>;
};

method prepend

prepend: {
    <AdditionalMiddlewares extends readonly Middleware<any, any>[]>(
        items: AdditionalMiddlewares
    ): MiddlewareArray<[...AdditionalMiddlewares, ...Middlewares]>;
    <AdditionalMiddlewares extends readonly Middleware<any, any>[]>(
        ...items: AdditionalMiddlewares
    ): MiddlewareArray<[...AdditionalMiddlewares, ...Middlewares]>;
};

class TaskAbortError

class TaskAbortError implements SerializedError {}

constructor

constructor(code: string);

property code

code: string;

property message

message: string;

property name

name: string;

Interfaces

interface ActionCreatorWithNonInferrablePayload

interface ActionCreatorWithNonInferrablePayload<T extends string = string>
    extends BaseActionCreator<unknown, T> {}

An action creator of type T whose payload type could not be inferred. Accepts everything as payload.
{redux#ActionCreator}
Modifiers
- @public

call signature

<PT extends unknown>(payload: PT): PayloadAction<PT, T>;

Calling this redux#ActionCreator with an argument will return a PayloadAction of type T with a payload of exactly the type of the argument.

interface ActionCreatorWithOptionalPayload

interface ActionCreatorWithOptionalPayload<P, T extends string = string>
    extends BaseActionCreator<P, T> {}

An action creator of type T that takes an optional payload of type P.
{redux#ActionCreator}
Modifiers
- @public

call signature

(payload?: P): PayloadAction<P, T>;

Calling this redux#ActionCreator with an argument will return a PayloadAction of type T with a payload of P. Calling it without an argument will return a PayloadAction with a payload of undefined.

interface ActionCreatorWithoutPayload

interface ActionCreatorWithoutPayload<T extends string = string>
    extends BaseActionCreator<undefined, T> {}

An action creator of type T that takes no payload.
{redux#ActionCreator}
Modifiers
- @public

call signature

(noArgument: void): PayloadAction<undefined, T>;

Calling this redux#ActionCreator will return a PayloadAction of type T with a payload of undefined

interface ActionCreatorWithPayload

interface ActionCreatorWithPayload<P, T extends string = string>
    extends BaseActionCreator<P, T> {}

An action creator of type T that requires a payload of type P.
{redux#ActionCreator}
Modifiers
- @public

call signature

(payload: P): PayloadAction<P, T>;

Calling this redux#ActionCreator with an argument will return a PayloadAction of type T with a payload of P

interface ActionCreatorWithPreparedPayload

interface ActionCreatorWithPreparedPayload<
    Args extends unknown[],
    P,
    T extends string = string,
    E = never,
    M = never
> extends BaseActionCreator<P, T, M, E> {}

An action creator that takes multiple arguments that are passed to a PrepareAction method to create the final Action.
Modifiers
- @public

call signature

(...args: Args): PayloadAction<P, T, M, E>;

Calling this redux#ActionCreator with Args will return an Action with a payload of type P and (depending on the PrepareAction method used) a meta- and error property of types M and E respectively.

interface ActionReducerMapBuilder

interface ActionReducerMapBuilder<State> {}

A builder for an action <-> reducer map.
Modifiers
- @public

method addCase

addCase: {
    <ActionCreator extends TypedActionCreator<string>>(
        actionCreator: ActionCreator,
        reducer: CaseReducer<State, ReturnType<ActionCreator>>
    ): ActionReducerMapBuilder<State>;
    <Type extends string, A extends Action<Type>>(
        type: Type,
        reducer: CaseReducer<State, A>
    ): ActionReducerMapBuilder<State>;
};

Adds a case reducer to handle a single exact action type.
Parameter actionCreator
Either a plain action type string, or an action creator generated by [createAction](./createAction) that can be used to determine the action type.
Parameter reducer
The actual case reducer function.
Remarks
All calls to builder.addCase must come before any calls to builder.addMatcher or builder.addDefaultCase.

method addDefaultCase

addDefaultCase: (reducer: CaseReducer<State, AnyAction>) => {};

Adds a "default case" reducer that is executed if no case reducer and no matcher reducer was executed for this action.
Parameter reducer
The fallback "default case" reducer function.
Example 1
```ts import { createReducer } from '@reduxjs/toolkit' const initialState = { otherActions: 0 } const reducer = createReducer(initialState, builder => { builder // .addCase(...) // .addMatcher(...) .addDefaultCase((state, action) => { state.otherActions++ }) }) ```

method addMatcher

addMatcher: <A>(
    matcher: TypeGuard<A> | ((action: any) => boolean),
    reducer: CaseReducer<State, A extends AnyAction ? A : A & AnyAction>
) => Omit<ActionReducerMapBuilder<State>, 'addCase'>;

Allows you to match your incoming actions against your own filter function instead of only the action.type property.
Parameter matcher
A matcher function. In TypeScript, this should be a [type predicate](https://www.typescriptlang.org/docs/handbook/advanced-types.html#using-type-predicates) function
Parameter reducer
The actual case reducer function.
Remarks
If multiple matcher reducers match, all of them will be executed in the order they were defined in - even if a case reducer already matched. All calls to builder.addMatcher must come after any calls to builder.addCase and before any calls to builder.addDefaultCase.
Example 1
```ts import { createAction, createReducer, AsyncThunk, AnyAction, } from "@reduxjs/toolkit";
type GenericAsyncThunk = AsyncThunk<unknown, unknown, any>;
type PendingAction = ReturnType<GenericAsyncThunk["pending"]>; type RejectedAction = ReturnType<GenericAsyncThunk["rejected"]>; type FulfilledAction = ReturnType<GenericAsyncThunk["fulfilled"]>;
const initialState: Record<string, string> = {}; const resetAction = createAction("reset-tracked-loading-state");
function isPendingAction(action: AnyAction): action is PendingAction { return action.type.endsWith("/pending"); }
const reducer = createReducer(initialState, (builder) => { builder .addCase(resetAction, () => initialState) // matcher can be defined outside as a type predicate function .addMatcher(isPendingAction, (state, action) => { state[action.meta.requestId] = "pending"; }) .addMatcher( // matcher can be defined inline as a type predicate function (action): action is RejectedAction => action.type.endsWith("/rejected"), (state, action) => { state[action.meta.requestId] = "rejected"; } ) // matcher can just return boolean and the matcher can receive a generic argument .addMatcher( (action) => action.type.endsWith("/fulfilled"), (state, action) => { state[action.meta.requestId] = "fulfilled"; } ); }); ```

interface AsyncTaskExecutor

interface AsyncTaskExecutor<T> {}

Modifiers
- @public

call signature

(forkApi: ForkedTaskAPI): Promise<T>;

interface ConfigureStoreOptions

interface ConfigureStoreOptions<
    S = any,
    A extends Action = AnyAction,
    M extends Middlewares<S> = Middlewares<S>,
    E extends Enhancers = Enhancers
> {}

Options for configureStore().
Modifiers
- @public

property devTools

devTools?: boolean | DevToolsOptions;

Whether to enable Redux DevTools integration. Defaults to true.
Additional configuration can be done by passing Redux DevTools options

property enhancers

enhancers?: E | ConfigureEnhancersCallback<E>;

The store enhancers to apply. See Redux's createStore(). All enhancers will be included before the DevTools Extension enhancer. If you need to customize the order of enhancers, supply a callback function that will receive the original array (ie, [applyMiddleware]), and should return a new array (such as [applyMiddleware, offline]). If you only need to add middleware, you can use the middleware parameter instead.

property middleware

middleware?: ((getDefaultMiddleware: CurriedGetDefaultMiddleware<S>) => M) | M;

An array of Redux middleware to install. If not supplied, defaults to the set of middleware returned by getDefaultMiddleware().
Example 1
middleware: (gDM) => gDM().concat(logger, apiMiddleware, yourCustomMiddleware)
See Also
- https://redux-toolkit.js.org/api/getDefaultMiddleware#intended-usage

property preloadedState

preloadedState?: PreloadedState<CombinedState<NoInfer<S>>>;

The initial state, same as Redux's createStore. You may optionally specify it to hydrate the state from the server in universal apps, or to restore a previously serialized user session. If you use combineReducers() to produce the root reducer function (either directly or indirectly by passing an object as reducer), this must be an object with the same shape as the reducer map keys.

property reducer

reducer: Reducer<S, A> | ReducersMapObject<S, A>;

A single reducer function that will be used as the root reducer, or an object of slice reducers that will be passed to combineReducers().

interface CreateListenerMiddlewareOptions

interface CreateListenerMiddlewareOptions<ExtraArgument = unknown> {}

Modifiers
- @public

property extra

extra?: ExtraArgument;

property onError

onError?: ListenerErrorHandler;

Receives synchronous errors that are raised by listener and listenerOption.predicate.

interface CreateSliceOptions

interface CreateSliceOptions<
    State = any,
    CR extends SliceCaseReducers<State> = SliceCaseReducers<State>,
    Name extends string = string
> {}

Options for createSlice().
Modifiers
- @public

property extraReducers

extraReducers?:
    | CaseReducers<NoInfer<State>, any>
    | ((builder: ActionReducerMapBuilder<NoInfer<State>>) => void);

A callback that receives a *builder* object to define case reducers via calls to builder.addCase(actionCreatorOrType, reducer).
Alternatively, a mapping from action types to action-type-specific *case reducer* functions. These reducers should have existing action types used as the keys, and action creators will _not_ be generated.
Example 1
```ts import { createAction, createSlice, Action, AnyAction } from '@reduxjs/toolkit' const incrementBy = createAction('incrementBy') const decrement = createAction('decrement')
interface RejectedAction extends Action { error: Error }
function isRejectedAction(action: AnyAction): action is RejectedAction { return action.type.endsWith('rejected') }
createSlice({ name: 'counter', initialState: 0, reducers: {}, extraReducers: builder => { builder .addCase(incrementBy, (state, action) => { // action is inferred correctly here if using TS }) // You can chain calls, or have separate builder.addCase() lines each time .addCase(decrement, (state, action) => {}) // You can match a range of action types .addMatcher( isRejectedAction, // action will be inferred as a RejectedAction due to isRejectedAction being defined as a type guard (state, action) => {} ) // and provide a default case if no other handlers matched .addDefaultCase((state, action) => {}) } }) ```

property initialState

initialState: State | (() => State);

The initial state that should be used when the reducer is called the first time. This may also be a "lazy initializer" function, which should return an initial state value when called. This will be used whenever the reducer is called with undefined as its state value, and is primarily useful for cases like reading initial state from localStorage.

property name

name: Name;

The slice's name. Used to namespace the generated action types.

property reducers

reducers: ValidateSliceCaseReducers<State, CR>;

A mapping from action types to action-type-specific *case reducer* functions. For every action type, a matching action creator will be generated using createAction().

interface DevToolsEnhancerOptions

interface DevToolsEnhancerOptions {}

Modifiers
- @public

property actionCreators

actionCreators?:
    | ActionCreator<any>[]
    | {
          [key: string]: ActionCreator<any>;
      };

action creators functions to be available in the Dispatcher.

property actionsAllowlist

actionsAllowlist?: string | string[];

*string or array of strings as regex* - actions types to be hidden / shown in the monitors (while passed to the reducers). If actionsAllowlist specified, actionsDenylist is ignored.

property actionSanitizer

actionSanitizer?: <A extends Action>(action: A, id: number) => A;

function which takes action object and id number as arguments, and should return action object back.

property actionsBlacklist

actionsBlacklist?: string | string[];

*string or array of strings as regex* - actions types to be hidden / shown in the monitors (while passed to the reducers). If actionsWhitelist specified, actionsBlacklist is ignored.
Deprecated
Use actionsDenylist instead.

property actionsDenylist

actionsDenylist?: string | string[];

*string or array of strings as regex* - actions types to be hidden / shown in the monitors (while passed to the reducers). If actionsAllowlist specified, actionsDenylist is ignored.

property actionsWhitelist

actionsWhitelist?: string | string[];

*string or array of strings as regex* - actions types to be hidden / shown in the monitors (while passed to the reducers). If actionsWhitelist specified, actionsBlacklist is ignored.
Deprecated
Use actionsAllowlist instead.

property autoPause

autoPause?: boolean;

auto pauses when the extension’s window is not opened, and so has zero impact on your app when not in use. Not available for Redux enhancer (as it already does it but storing the data to be sent).
false

property features

features?: {
    /**
     * start/pause recording of dispatched actions
     */
    pause?: boolean;
    /**
     * lock/unlock dispatching actions and side effects
     */
    lock?: boolean;
    /**
     * persist states on page reloading
     */
    persist?: boolean;
    /**
     * export history of actions in a file
     */
    export?: boolean | 'custom';
    /**
     * import history of actions from a file
     */
    import?: boolean | 'custom';
    /**
     * jump back and forth (time travelling)
     */
    jump?: boolean;
    /**
     * skip (cancel) actions
     */
    skip?: boolean;
    /**
     * drag and drop actions in the history list
     */
    reorder?: boolean;
    /**
     * dispatch custom actions or action creators
     */
    dispatch?: boolean;
    /**
     * generate tests for the selected actions
     */
    test?: boolean;
};

If you want to restrict the extension, specify the features you allow. If not specified, all of the features are enabled. When set as an object, only those included as true will be allowed. Note that except true/false, import and export can be set as custom (which is by default for Redux enhancer), meaning that the importing/exporting occurs on the client side. Otherwise, you'll get/set the data right from the monitor part.

property latency

latency?: number;

if more than one action is dispatched in the indicated interval, all new actions will be collected and sent at once. It is the joint between performance and speed. When set to 0, all actions will be sent instantly. Set it to a higher value when experiencing perf issues (also maxAge to a lower value).
500 ms.

property maxAge

maxAge?: number;

(> 1) - maximum allowed actions to be stored in the history tree. The oldest actions are removed once maxAge is reached. It's critical for performance.
50

property name

name?: string;

the instance name to be showed on the monitor page. Default value is document.title. If not specified and there's no document title, it will consist of tabId and instanceId.

property pauseActionType

pauseActionType?: string;

if specified, whenever clicking on Pause recording button and there are actions in the history log, will add this action type. If not specified, will commit when paused. Available only for Redux enhancer.
"@@PAUSED""

property predicate

predicate?: <S, A extends Action>(state: S, action: A) => boolean;

called for every action before sending, takes state and action object, and returns true in case it allows sending the current data to the monitor. Use it as a more advanced version of actionsDenylist/actionsAllowlist parameters.

property serialize

serialize?:
    | boolean
    | {
          /**
           * - `undefined` - will use regular `JSON.stringify` to send data (it's the fast mode).
           * - `false` - will handle also circular references.
           * - `true` - will handle also date, regex, undefined, error objects, symbols, maps, sets and functions.
           * - object, which contains `date`, `regex`, `undefined`, `error`, `symbol`, `map`, `set` and `function` keys.
           *   For each of them you can indicate if to include (by setting as `true`).
           *   For `function` key you can also specify a custom function which handles serialization.
           *   See [`jsan`](https://github.com/kolodny/jsan) for more details.
           */
          options?:
              | undefined
              | boolean
              | {
                    date?: true;
                    regex?: true;
                    undefined?: true;
                    error?: true;
                    symbol?: true;
                    map?: true;
                    set?: true;
                    function?: true | ((fn: (...args: any[]) => any) => string);
                };
          /**
           * [JSON replacer function](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#The_replacer_parameter) used for both actions and states stringify.
           * In addition, you can specify a data type by adding a [`__serializedType__`](https://github.com/zalmoxisus/remotedev-serialize/blob/master/helpers/index.js#L4)
           * key. So you can deserialize it back while importing or persisting data.
           * Moreover, it will also [show a nice preview showing the provided custom type](https://cloud.githubusercontent.com/assets/7957859/21814330/a17d556a-d761-11e6-85ef-159dd12f36c5.png):
           */
          replacer?: (key: string, value: unknown) => any;
          /**
           * [JSON `reviver` function](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse#Using_the_reviver_parameter)
           * used for parsing the imported actions and states. See [`remotedev-serialize`](https://github.com/zalmoxisus/remotedev-serialize/blob/master/immutable/serialize.js#L8-L41)
           * as an example on how to serialize special data types and get them back.
           */
          reviver?: (key: string, value: unknown) => any;
          /**
           * Automatically serialize/deserialize immutablejs via [remotedev-serialize](https://github.com/zalmoxisus/remotedev-serialize).
           * Just pass the Immutable library. It will support all ImmutableJS structures. You can even export them into a file and get them back.
           * The only exception is `Record` class, for which you should pass this in addition the references to your classes in `refs`.
           */
          immutable?: any;
          /**
           * ImmutableJS `Record` classes used to make possible restore its instances back when importing, persisting...
           */
          refs?: any;
      };

Customizes how actions and state are serialized and deserialized. Can be a boolean or object. If given a boolean, the behavior is the same as if you were to pass an object and specify options as a boolean. Giving an object allows fine-grained customization using the replacer and reviver functions.

property shouldCatchErrors

shouldCatchErrors?: boolean;

if specified as true, whenever there's an exception in reducers, the monitors will show the error message, and next actions will not be dispatched.
false

property shouldHotReload

shouldHotReload?: boolean;

if set to false, will not recompute the states on hot reloading (or on replacing the reducers). Available only for Redux enhancer.
true

property shouldRecordChanges

shouldRecordChanges?: boolean;

if specified as false, it will not record the changes till clicking on Start recording button. Available only for Redux enhancer, for others use autoPause.
true

property shouldStartLocked

shouldStartLocked?: boolean;

if specified as true, it will not allow any non-monitor actions to be dispatched till clicking on Unlock changes button. Available only for Redux enhancer.
false

property stateSanitizer

stateSanitizer?: <S>(state: S, index: number) => S;

function which takes state object and index as arguments, and should return state object back.

property trace

trace?: boolean | (<A extends Action>(action: A) => string);

Set to true or a stacktrace-returning function to record call stack traces for dispatched actions. Defaults to false.

property traceLimit

traceLimit?: number;

The maximum number of stack trace entries to record per action. Defaults to 10.

interface Dictionary

interface Dictionary<T> extends DictionaryNum<T> {}

Modifiers
- @public

index signature

[id: string]: T | undefined;

interface EntityAdapter

interface EntityAdapter<T> extends EntityStateAdapter<T> {}

Modifiers
- @public

property selectId

selectId: IdSelector<T>;

property sortComparer

sortComparer: false | Comparer<T>;

method getInitialState

getInitialState: {
    (): EntityState<T>;
    <S extends object>(state: S): EntityState<T> & S;
};

method getSelectors

getSelectors: {
    (): EntitySelectors<T, EntityState<T>>;
    <V>(selectState: (state: V) => EntityState<T>): EntitySelectors<T, V>;
};

interface EntitySelectors

interface EntitySelectors<T, V> {}

Modifiers
- @public

property selectAll

selectAll: (state: V) => T[];

property selectById

selectById: (state: V, id: EntityId) => T | undefined;

property selectEntities

selectEntities: (state: V) => Dictionary<T>;

property selectIds

selectIds: (state: V) => EntityId[];

property selectTotal

selectTotal: (state: V) => number;

interface EntityState

interface EntityState<T> {}

Modifiers
- @public

property entities

entities: Dictionary<T>;

property ids

ids: EntityId[];

interface EntityStateAdapter

interface EntityStateAdapter<T> {}

Modifiers
- @public

method addMany

addMany: {
    <S extends EntityState<T>>(
        state: PreventAny<S, T>,
        entities: readonly T[] | Record<EntityId, T>
    ): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        entities: { payload: readonly T[] | Record<EntityId, T>; type: string }
    ): S;
};

method addOne

addOne: {
    <S extends EntityState<T>>(state: PreventAny<S, T>, entity: T): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        action: { payload: T; type: string }
    ): S;
};

method removeAll

removeAll: <S extends EntityState<T>>(state: PreventAny<S, T>) => S;

method removeMany

removeMany: {
    <S extends EntityState<T>>(
        state: PreventAny<S, T>,
        keys: readonly EntityId[]
    ): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        keys: { payload: readonly EntityId[]; type: string }
    ): S;
};

method removeOne

removeOne: {
    <S extends EntityState<T>>(state: PreventAny<S, T>, key: EntityId): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        key: { payload: EntityId; type: string }
    ): S;
};

method setAll

setAll: {
    <S extends EntityState<T>>(
        state: PreventAny<S, T>,
        entities: readonly T[] | Record<EntityId, T>
    ): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        entities: { payload: readonly T[] | Record<EntityId, T>; type: string }
    ): S;
};

method setMany

setMany: {
    <S extends EntityState<T>>(
        state: PreventAny<S, T>,
        entities: readonly T[] | Record<EntityId, T>
    ): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        entities: { payload: readonly T[] | Record<EntityId, T>; type: string }
    ): S;
};

method setOne

setOne: {
    <S extends EntityState<T>>(state: PreventAny<S, T>, entity: T): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        action: { payload: T; type: string }
    ): S;
};

method updateMany

updateMany: {
    <S extends EntityState<T>>(
        state: PreventAny<S, T>,
        updates: ReadonlyArray<Update<T>>
    ): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        updates: { payload: readonly Update<T>[]; type: string }
    ): S;
};

method updateOne

updateOne: {
    <S extends EntityState<T>>(state: PreventAny<S, T>, update: Update<T>): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        update: { payload: Update<T>; type: string }
    ): S;
};

method upsertMany

upsertMany: {
    <S extends EntityState<T>>(
        state: PreventAny<S, T>,
        entities: readonly T[] | Record<EntityId, T>
    ): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        entities: { payload: readonly T[] | Record<EntityId, T>; type: string }
    ): S;
};

method upsertOne

upsertOne: {
    <S extends EntityState<T>>(state: PreventAny<S, T>, entity: T): S;
    <S extends EntityState<T>>(
        state: IsAny<S, EntityState<T>, S>,
        entity: { payload: T; type: string }
    ): S;
};

interface ForkedTask

interface ForkedTask<T> {}

Modifiers
- @public

property result

result: Promise<TaskResult<T>>;

A promise that resolves when the task is either completed or cancelled or rejects if parent listener execution is cancelled or completed.

### Example

const result = await fork(async (forkApi) => Promise.resolve(4)).result

if(result.status === 'ok') {
  console.log(result.value) // logs 4
}}

method cancel

cancel: () => void;

Cancel task if it is in progress or not yet started, it is noop otherwise.

interface ForkedTaskAPI

interface ForkedTaskAPI {}

Modifiers
- @public

property signal

signal: AbortSignal;

An abort signal whose aborted property is set to true if the task execution is either aborted or completed.
See Also
- https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal

method delay

delay: (timeoutMs: number) => Promise<void>;

Returns a promise that resolves after timeoutMs or rejects if the task or the parent listener has been cancelled or is completed.
Parameter timeoutMs

method pause

pause: <W>(waitFor: Promise<W>) => Promise<W>;

Returns a promise that resolves when waitFor resolves or rejects if the task or the parent listener has been cancelled or is completed.

interface ImmutableStateInvariantMiddlewareOptions

interface ImmutableStateInvariantMiddlewareOptions {}

Options for createImmutableStateInvariantMiddleware().
Modifiers
- @public

property ignore

ignore?: string[];

property ignoredPaths

ignoredPaths?: IgnorePaths;

An array of dot-separated path strings that match named nodes from the root state to ignore when checking for immutability. Defaults to undefined

property isImmutable

isImmutable?: IsImmutableFunc;

Callback function to check if a value is considered to be immutable. This function is applied recursively to every value contained in the state. The default implementation will return true for primitive types (like numbers, strings, booleans, null and undefined).

property warnAfter

warnAfter?: number;

Print a warning if checks take longer than N ms. Default: 32ms

interface ListenerEffectAPI

interface ListenerEffectAPI<
    State,
    Dispatch extends ReduxDispatch<AnyAction>,
    ExtraArgument = unknown
> extends MiddlewareAPI<Dispatch, State> {}

Modifiers
- @public

property cancelActiveListeners

cancelActiveListeners: () => void;

Cancels all other running instances of this same listener except for the one that made this call.

property condition

condition: ConditionFunction<State>;

Returns a promise that resolves when the input predicate returns true or rejects if the listener has been cancelled or is completed.

The return value is true if the predicate succeeds or false if a timeout is provided and expires first.

### Example

const updateBy = createAction<number>('counter/updateBy');

middleware.startListening({
 actionCreator: updateBy,
 async effect(_, { condition }) {
   // wait at most 3s for `updateBy` actions.
   if(await condition(updateBy.match, 3_000)) {
     // `updateBy` has been dispatched twice in less than 3s.
   }
 }
})

property extra

extra: ExtraArgument;

property getOriginalState

getOriginalState: () => State;

Returns the store state as it existed when the action was originally dispatched, _before_ the reducers ran.

### Synchronous invocation

This function can **only** be invoked **synchronously**, it throws error otherwise.

Example 1

middleware.startListening({
 predicate: () => true,
 async effect(_, { getOriginalState }) {
   getOriginalState(); // sync: OK!

   setTimeout(getOriginalState, 0); // async: throws Error

   await Promise().resolve();

   getOriginalState() // async: throws Error
 }
})

property signal

signal: AbortSignal;

An abort signal whose aborted property is set to true if the listener execution is either aborted or completed.
See Also
- https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal

property take

take: TakePattern<State>;

Returns a promise that resolves when the input predicate returns true or rejects if the listener has been cancelled or is completed.
The return value is the [action, currentState, previousState] combination that the predicate saw as arguments.
The promise resolves to null if a timeout is provided and expires first,
### Example
const updateBy = createAction<number>('counter/updateBy'); middleware.startListening({ actionCreator: updateBy, async effect(_, { take }) { const [{ payload }] = await take(updateBy.match); console.log(payload); // logs 5; } }) store.dispatch(updateBy(5));

method delay

delay: (timeoutMs: number) => Promise<void>;

Returns a promise that resolves after timeoutMs or rejects if the listener has been cancelled or is completed.

method fork

fork: <T>(executor: ForkedTaskExecutor<T>) => ForkedTask<T>;

Queues in the next microtask the execution of a task.
Parameter executor

method pause

pause: <M>(promise: Promise<M>) => Promise<M>;

Returns a promise that resolves when waitFor resolves or rejects if the listener has been cancelled or is completed.
Parameter promise

subscribe: () => void;

It will subscribe a listener if it was previously removed, noop otherwise.

method unsubscribe

unsubscribe: () => void;

Removes the listener entry from the middleware and prevent future instances of the listener from running.
It does **not** cancel any active instances.

interface ListenerErrorHandler

interface ListenerErrorHandler {}

Gets notified with synchronous and asynchronous errors raised by listeners or predicates.
Parameter error
The thrown error.
Parameter errorInfo
Additional information regarding the thrown error.
Modifiers
- @public

call signature

(error: unknown, errorInfo: ListenerErrorInfo): void;

interface ListenerMiddlewareInstance

interface ListenerMiddlewareInstance<
    State = unknown,
    Dispatch extends ThunkDispatch<State, unknown, AnyAction> = ThunkDispatch<
        State,
        unknown,
        AnyAction
    >,
    ExtraArgument = unknown
> {}

Modifiers
- @public

property clearListeners

clearListeners: () => void;

Unsubscribes all listeners, cancels running listeners and tasks.

property middleware

middleware: ListenerMiddleware<State, Dispatch, ExtraArgument>;

property startListening

startListening: AddListenerOverloads<
    UnsubscribeListener,
    State,
    Dispatch,
    ExtraArgument
>;

property stopListening

stopListening: RemoveListenerOverloads<State, Dispatch>;

interface SerializableStateInvariantMiddlewareOptions

interface SerializableStateInvariantMiddlewareOptions {}

Options for createSerializableStateInvariantMiddleware().
Modifiers
- @public

property disableCache

disableCache?: boolean;

Opt out of caching the results. The cache uses a WeakSet and speeds up repeated checking processes. The cache is automatically disabled if no browser support for WeakSet is present.

property getEntries

getEntries?: (value: any) => [string, any][];

The function that will be used to retrieve entries from each value. If unspecified, Object.entries will be used. Defaults to undefined.

property ignoreActions

ignoreActions?: boolean;

Opt out of checking actions. When set to true, other action-related params will be ignored.

property ignoredActionPaths

ignoredActionPaths?: (string | RegExp)[];

An array of dot-separated path strings or regular expressions to ignore when checking for serializability, Defaults to ['meta.arg', 'meta.baseQueryMeta']

property ignoredActions

ignoredActions?: string[];

An array of action types to ignore when checking for serializability. Defaults to []

property ignoredPaths

ignoredPaths?: (string | RegExp)[];

An array of dot-separated path strings or regular expressions to ignore when checking for serializability, Defaults to []

property ignoreState

ignoreState?: boolean;

Opt out of checking state. When set to true, other state-related params will be ignored.

property isSerializable

isSerializable?: (value: any) => boolean;

The function to check if a value is considered serializable. This function is applied recursively to every value contained in the state. Defaults to isPlain().

property warnAfter

warnAfter?: number;

Execution time warning threshold. If the middleware takes longer than warnAfter ms, a warning will be displayed in the console. Defaults to 32ms.

interface SerializedError

interface SerializedError {}

Modifiers
- @public

property code

code?: string;

property message

message?: string;

property name

name?: string;

property stack

stack?: string;

interface Slice

interface Slice<
    State = any,
    CaseReducers extends SliceCaseReducers<State> = SliceCaseReducers<State>,
    Name extends string = string
> {}

The return value of createSlice
Modifiers
- @public

property actions

actions: CaseReducerActions<CaseReducers, Name>;

Action creators for the types of actions that are handled by the slice reducer.

property caseReducers

caseReducers: SliceDefinedCaseReducers<CaseReducers>;

The individual case reducer functions that were passed in the reducers parameter. This enables reuse and testing if they were defined inline when calling createSlice.

property getInitialState

getInitialState: () => State;

Provides access to the initial state value given to the slice. If a lazy state initializer was provided, it will be called and a fresh value returned.

property name

name: Name;

The slice name.

property reducer

reducer: Reducer<State>;

The slice's reducer.

interface SyncTaskExecutor

interface SyncTaskExecutor<T> {}

Modifiers
- @public

call signature

(forkApi: ForkedTaskAPI): T;

interface UnsubscribeListenerOptions

interface UnsubscribeListenerOptions {}

Modifiers
- @public

property cancelActive

cancelActive?: true;

Type Aliases

type ActionMatchingAllOf

type ActionMatchingAllOf<Matchers extends [...Matcher<any>[]]> = UnionToIntersection<
    ActionMatchingAnyOf<Matchers>
>;

Modifiers
- @public

type ActionMatchingAnyOf

type ActionMatchingAnyOf<Matchers extends [...Matcher<any>[]]> = ActionFromMatcher<
    Matchers[number]
>;

Modifiers
- @public

type Actions

type Actions<T extends keyof any = string> = Record<T, Action>;

Defines a mapping from action types to corresponding action object shapes.
Modifiers
- @public
Deprecated
This should not be used manually - it is only used for internal inference purposes and should not have any further value. It might be removed in the future.

type AsyncThunk

type AsyncThunk<
    Returned,
    ThunkArg,
    ThunkApiConfig extends AsyncThunkConfig
> = AsyncThunkActionCreator<Returned, ThunkArg, ThunkApiConfig> & {
    pending: AsyncThunkPendingActionCreator<ThunkArg, ThunkApiConfig>;
    rejected: AsyncThunkRejectedActionCreator<ThunkArg, ThunkApiConfig>;
    fulfilled: AsyncThunkFulfilledActionCreator<Returned, ThunkArg, ThunkApiConfig>;
    typePrefix: string;
};

A type describing the return value of createAsyncThunk. Might be useful for wrapping createAsyncThunk in custom abstractions.
Modifiers
- @public

type AsyncThunkAction

type AsyncThunkAction<
    Returned,
    ThunkArg,
    ThunkApiConfig extends AsyncThunkConfig
> = (
    dispatch: GetDispatch<ThunkApiConfig>,
    getState: () => GetState<ThunkApiConfig>,
    extra: GetExtra<ThunkApiConfig>
) => Promise<
    | ReturnType<AsyncThunkFulfilledActionCreator<Returned, ThunkArg>>
    | ReturnType<AsyncThunkRejectedActionCreator<ThunkArg, ThunkApiConfig>>
> & {
    abort: (reason?: string) => void;
    requestId: string;
    arg: ThunkArg;
    unwrap: () => Promise<Returned>;
};

A ThunkAction created by createAsyncThunk. Dispatching it returns a Promise for either a fulfilled or rejected action. Also, the returned value contains an abort() method that allows the asyncAction to be cancelled from the outside.
Modifiers
- @public

type AsyncThunkOptions

type AsyncThunkOptions<
    ThunkArg = void,
    ThunkApiConfig extends AsyncThunkConfig = {}
> = {
    /**
     * A method to control whether the asyncThunk should be executed. Has access to the
     * `arg`, `api.getState()` and `api.extra` arguments.
     *
     * @returns `false` if it should be skipped
     */
    condition?(
        arg: ThunkArg,
        api: Pick<GetThunkAPI<ThunkApiConfig>, 'getState' | 'extra'>
    ): MaybePromise<boolean | undefined>;
    /**
     * If `condition` returns `false`, the asyncThunk will be skipped.
     * This option allows you to control whether a `rejected` action with `meta.condition == false`
     * will be dispatched or not.
     *
     * @default `false`
     */
    dispatchConditionRejection?: boolean;
    serializeError?: (x: unknown) => GetSerializedErrorType<ThunkApiConfig>;
    /**
     * A function to use when generating the `requestId` for the request sequence.
     *
     * @default `nanoid`
     */
    idGenerator?: (arg: ThunkArg) => string;
} & IsUnknown<
    GetPendingMeta<ThunkApiConfig>,
    {
        /**
         * A method to generate additional properties to be added to `meta` of the pending action.
         *
         * Using this optional overload will not modify the types correctly, this overload is only in place to support JavaScript users.
         * Please use the `ThunkApiConfig` parameter `pendingMeta` to get access to a correctly typed overload
         */
        getPendingMeta?(
            base: {
                arg: ThunkArg;
                requestId: string;
            },
            api: Pick<GetThunkAPI<ThunkApiConfig>, 'getState' | 'extra'>
        ): GetPendingMeta<ThunkApiConfig>;
    },
    {
        /**
         * A method to generate additional properties to be added to `meta` of the pending action.
         */
        getPendingMeta(
            base: {
                arg: ThunkArg;
                requestId: string;
            },
            api: Pick<GetThunkAPI<ThunkApiConfig>, 'getState' | 'extra'>
        ): GetPendingMeta<ThunkApiConfig>;
    }
>;

Options object for createAsyncThunk.
Modifiers
- @public

type AsyncThunkPayloadCreator

type AsyncThunkPayloadCreator<
    Returned,
    ThunkArg = void,
    ThunkApiConfig extends AsyncThunkConfig = {}
> = (
    arg: ThunkArg,
    thunkAPI: GetThunkAPI<ThunkApiConfig>
) => AsyncThunkPayloadCreatorReturnValue<Returned, ThunkApiConfig>;

A type describing the payloadCreator argument to createAsyncThunk. Might be useful for wrapping createAsyncThunk in custom abstractions.
Modifiers
- @public

type AsyncThunkPayloadCreatorReturnValue

type AsyncThunkPayloadCreatorReturnValue<
    Returned,
    ThunkApiConfig extends AsyncThunkConfig
> = MaybePromise<
    | IsUnknown<
          GetFulfilledMeta<ThunkApiConfig>,
          Returned,
          FulfillWithMeta<Returned, GetFulfilledMeta<ThunkApiConfig>>
      >
    | RejectWithValue<
          GetRejectValue<ThunkApiConfig>,
          GetRejectedMeta<ThunkApiConfig>
      >
>;

A type describing the return value of the payloadCreator argument to createAsyncThunk. Might be useful for wrapping createAsyncThunk in custom abstractions.
Modifiers
- @public

type AutoBatchOptions

type AutoBatchOptions =
    | {
          type: 'tick';
      }
    | {
          type: 'timer';
          timeout: number;
      }
    | {
          type: 'raf';
      }
    | {
          type: 'callback';
          queueNotification: (notify: () => void) => void;
      };

type CaseReducer

type CaseReducer<S = any, A extends Action = AnyAction> = (
    state: Draft<S>,
    action: A
) => NoInfer<S> | void | Draft<NoInfer<S>>;

A *case reducer* is a reducer function for a specific action type. Case reducers can be composed to full reducers using createReducer().
Unlike a normal Redux reducer, a case reducer is never called with an undefined state to determine the initial state. Instead, the initial state is explicitly specified as an argument to createReducer().
In addition, a case reducer can choose to mutate the passed-in state value directly instead of returning a new state. This does not actually cause the store state to be mutated directly; instead, thanks to [immer](https://github.com/mweststrate/immer), the mutations are translated to copy operations that result in a new state.
Modifiers
- @public

type CaseReducerActions

type CaseReducerActions<
    CaseReducers extends SliceCaseReducers<any>,
    SliceName extends string
> = {
    [Type in keyof CaseReducers]: CaseReducers[Type] extends {
        prepare: any;
    }
        ? ActionCreatorForCaseReducerWithPrepare<
              CaseReducers[Type],
              SliceActionType<SliceName, Type>
          >
        : ActionCreatorForCaseReducer<
              CaseReducers[Type],
              SliceActionType<SliceName, Type>
          >;
};

Derives the slice's actions property from the reducers options
Modifiers
- @public

type CaseReducers

type CaseReducers<S, AS extends Actions> = {
    [T in keyof AS]: AS[T] extends Action ? CaseReducer<S, AS[T]> : void;
};

A mapping from action types to case reducers for createReducer().
Modifiers
- @public
Deprecated
This should not be used manually - it is only used for internal inference purposes and using it manually would lead to type erasure. It might be removed in the future.

type CaseReducerWithPrepare

type CaseReducerWithPrepare<State, Action extends PayloadAction> = {
    reducer: CaseReducer<State, Action>;
    prepare: PrepareAction<Action['payload']>;
};

A CaseReducer with a prepare method.
Modifiers
- @public

type Comparer

type Comparer<T> = (a: T, b: T) => number;

Modifiers
- @public

type ConfigureEnhancersCallback

type ConfigureEnhancersCallback<E extends Enhancers = Enhancers> = (
    defaultEnhancers: readonly StoreEnhancer[]
) => [...E];

Callback function type, to be used in ConfigureStoreOptions.enhancers
Modifiers
- @public

type EnhancedStore

type EnhancedStore<
    S = any,
    A extends Action = AnyAction,
    M extends Middlewares<S> = Middlewares<S>,
    E extends Enhancers = Enhancers
> = ToolkitStore<S, A, M> & ExtractStoreExtensions<E>;

A Redux store returned by configureStore(). Supports dispatching side-effectful _thunks_ in addition to plain actions.
Modifiers
- @public

type EntityId

type EntityId = number | string;

Modifiers
- @public

type ForkedTaskExecutor

type ForkedTaskExecutor<T> = AsyncTaskExecutor<T> | SyncTaskExecutor<T>;

Modifiers
- @public

type IdSelector

type IdSelector<T> = (model: T) => EntityId;

Modifiers
- @public

type ListenerEffect

type ListenerEffect<
    Action extends AnyAction,
    State,
    Dispatch extends ReduxDispatch<AnyAction>,
    ExtraArgument = unknown
> = (
    action: Action,
    api: ListenerEffectAPI<State, Dispatch, ExtraArgument>
) => void | Promise<void>;

Modifiers
- @public

type ListenerMiddleware

type ListenerMiddleware<
    State = unknown,
    Dispatch extends ThunkDispatch<State, unknown, AnyAction> = ThunkDispatch<
        State,
        unknown,
        AnyAction
    >,
    ExtraArgument = unknown
> = Middleware<
    {
        (action: ReduxAction<'listenerMiddleware/add'>): UnsubscribeListener;
    },
    State,
    Dispatch
>;

Modifiers
- @public

type PayloadAction

type PayloadAction<P = void, T extends string = string, M = never, E = never> = {
    payload: P;
    type: T;
} & ([M] extends [never]
    ? {}
    : {
          meta: M;
      }) &
    ([E] extends [never]
        ? {}
        : {
              error: E;
          });

An action with a string type and an associated payload. This is the type of action returned by createAction() action creators.
P The type of the action's payload. T the type used for the action type. M The type of the action's meta (optional) E The type of the action's error (optional)
Modifiers
- @public

type PayloadActionCreator

type PayloadActionCreator<
    P = void,
    T extends string = string,
    PA extends PrepareAction<P> | void = void
> = IfPrepareActionMethodProvided<
    PA,
    _ActionCreatorWithPreparedPayload<PA, T>,
    IsAny<
        P,
        ActionCreatorWithPayload<any, T>,
        IsUnknownOrNonInferrable<
            P,
            ActionCreatorWithNonInferrablePayload<T>,
            IfVoid<
                P,
                ActionCreatorWithoutPayload<T>,
                IfMaybeUndefined<
                    P,
                    ActionCreatorWithOptionalPayload<P, T>,
                    ActionCreatorWithPayload<P, T>
                >
            >
        >
    >
>;

An action creator that produces actions with a payload attribute.
Modifiers
- @public

type PrepareAction

type PrepareAction<P> =
    | ((...args: any[]) => {
          payload: P;
      })
    | ((...args: any[]) => {
          payload: P;
          meta: any;
      })
    | ((...args: any[]) => {
          payload: P;
          error: any;
      })
    | ((...args: any[]) => {
          payload: P;
          meta: any;
          error: any;
      });

A "prepare" method to be used as the second parameter of createAction. Takes any number of arguments and returns a Flux Standard Action without type (will be added later) that *must* contain a payload (might be undefined).
Modifiers
- @public

type SliceActionCreator

type SliceActionCreator<P> = PayloadActionCreator<P>;

An action creator attached to a slice.
Modifiers
- @public
Deprecated
please use PayloadActionCreator directly

type SliceCaseReducers

type SliceCaseReducers<State> = {
    [K: string]:
        | CaseReducer<State, PayloadAction<any>>
        | CaseReducerWithPrepare<State, PayloadAction<any, string, any, any>>;
};

The type describing a slice's reducers option.
Modifiers
- @public

type TaskCancelled

type TaskCancelled = {
    readonly status: 'cancelled';
    readonly error: TaskAbortError;
};

Modifiers
- @public

type TaskRejected

type TaskRejected = {
    readonly status: 'rejected';
    readonly error: unknown;
};

Modifiers
- @public

type TaskResolved

type TaskResolved<T> = {
    readonly status: 'ok';
    readonly value: T;
};

Modifiers
- @public

type TaskResult

type TaskResult<Value> = TaskResolved<Value> | TaskRejected | TaskCancelled;

Modifiers
- @public

type TypedAddListener

type TypedAddListener<
    State,
    Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<
        State,
        unknown,
        AnyAction
    >,
    ExtraArgument = unknown,
    Payload = ListenerEntry<State, Dispatch>,
    T extends string = 'listenerMiddleware/add'
> = BaseActionCreator<Payload, T> &
    AddListenerOverloads<PayloadAction<Payload, T>, State, Dispatch, ExtraArgument>;

A "pre-typed" version of addListenerAction, so the listener args are well-typed
Modifiers
- @public

type TypedRemoveListener

type TypedRemoveListener<
    State,
    Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<
        State,
        unknown,
        AnyAction
    >,
    Payload = ListenerEntry<State, Dispatch>,
    T extends string = 'listenerMiddleware/remove'
> = BaseActionCreator<Payload, T> &
    AddListenerOverloads<
        PayloadAction<Payload, T>,
        State,
        Dispatch,
        any,
        UnsubscribeListenerOptions
    >;

A "pre-typed" version of removeListenerAction, so the listener args are well-typed
Modifiers
- @public

type TypedStartListening

type TypedStartListening<
    State,
    Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<
        State,
        unknown,
        AnyAction
    >,
    ExtraArgument = unknown
> = AddListenerOverloads<UnsubscribeListener, State, Dispatch, ExtraArgument>;

A "pre-typed" version of middleware.startListening, so the listener args are well-typed
Modifiers
- @public

type TypedStopListening

type TypedStopListening<
    State,
    Dispatch extends ReduxDispatch<AnyAction> = ThunkDispatch<
        State,
        unknown,
        AnyAction
    >
> = RemoveListenerOverloads<State, Dispatch>;

A "pre-typed" version of middleware.stopListening, so the listener args are well-typed
Modifiers
- @public

type UnsubscribeListener

type UnsubscribeListener = (unsubscribeOptions?: UnsubscribeListenerOptions) => void;

Modifiers
- @public

type Update

type Update<T> = {
    id: EntityId;
    changes: Partial<T>;
};

Modifiers
- @public

type ValidateSliceCaseReducers

type ValidateSliceCaseReducers<S, ACR extends SliceCaseReducers<S>> = ACR & {
    [T in keyof ACR]: ACR[T] extends {
        reducer(s: S, action?: infer A): any;
    }
        ? {
              prepare(...a: never[]): Omit<A, 'type'>;
          }
        : {};
};

Used on a SliceCaseReducers object. Ensures that if a CaseReducer is a CaseReducerWithPrepare, that the reducer and the prepare function use the same type of payload.
Might do additional such checks in the future.
This type is only ever useful if you want to write your own wrapper around createSlice. Please don't use it otherwise!
Modifiers
- @public

Peer Dependencies (2)

react
react-redux

Badge

To add a badge like this oneto your package's README, use the codes available below.

You may also use Shields.io to create a custom badge linking to https://www.jsdocs.io/package/@reduxjs/toolkit.

Markdown

[![jsDocs.io](https://img.shields.io/badge/jsDocs.io-reference-blue)](https://www.jsdocs.io/package/@reduxjs/toolkit)

HTML

<a href="https://www.jsdocs.io/package/@reduxjs/toolkit"><img src="https://img.shields.io/badge/jsDocs.io-reference-blue" alt="jsDocs.io"></a>

Updated 27 days ago.
Package analyzed in 11754 ms.
Missing or incorrect documentation? Open an issue for this package.

@reduxjs/toolkit

Install

Overview

Index

Variables

Functions

Classes

Interfaces

Type Aliases

Variables

variable addListener

Modifiers

variable clearAllListeners

Modifiers

variable createAsyncThunk

variable createDraftSafeSelector

Modifiers

variable removeListener

Modifiers

variable SHOULD_AUTOBATCH

Functions

function autoBatchEnhancer

function configureStore

Parameter options

Returns

Modifiers

function createAction

Parameter type

Parameter prepare

Modifiers

function createEntityAdapter

Parameter options

Modifiers

function createImmutableStateInvariantMiddleware

Parameter options

Modifiers

function createListenerMiddleware

Modifiers

function createReducer

Parameter initialState

Parameter builderCallback

Remarks

Example 1

Modifiers

Parameter initialState

Parameter actionsMap

Parameter actionMatchers

Parameter defaultCaseReducer

Example 1

Modifiers

function createSerializableStateInvariantMiddleware

Parameter options

Modifiers

function createSlice

Modifiers

function findNonSerializableValue

Modifiers

function getDefaultMiddleware

Modifiers

Deprecated

function getType

Parameter action

Returns

Modifiers

function isAllOf

Parameter matchers

Modifiers

function isAnyOf

Parameter matchers

Modifiers

function isAsyncThunkAction

Modifiers

Parameter asyncThunks

Modifiers

Modifiers

function isFulfilled

Modifiers

Parameter asyncThunks

Modifiers

Modifiers