> rather\r\n // than an Immutable, and TypeScript cannot find out how to reconcile\r\n // these two types.\r\n return createNextState(previousState, (draft: Draft) => {\r\n return caseReducer(draft, action)\r\n })\r\n }\r\n }\r\n\r\n return previousState\r\n }, state)\r\n }\r\n}\r\n","import type { Reducer } from 'redux'\r\nimport type {\r\n ActionCreatorWithoutPayload,\r\n PayloadAction,\r\n PayloadActionCreator,\r\n PrepareAction,\r\n _ActionCreatorWithPreparedPayload,\r\n} from './createAction'\r\nimport { createAction } from './createAction'\r\nimport type { CaseReducer, CaseReducers } from './createReducer'\r\nimport { createReducer } from './createReducer'\r\nimport type { ActionReducerMapBuilder } from './mapBuilders'\r\nimport { executeReducerBuilderCallback } from './mapBuilders'\r\nimport type { NoInfer } from './tsHelpers'\r\n\r\n/**\r\n * An action creator attached to a slice.\r\n *\r\n * @deprecated please use PayloadActionCreator directly\r\n *\r\n * @public\r\n */\r\nexport type SliceActionCreator = PayloadActionCreator
\r\n\r\n/**\r\n * The return value of `createSlice`\r\n *\r\n * @public\r\n */\r\nexport interface Slice<\r\n State = any,\r\n CaseReducers extends SliceCaseReducers = SliceCaseReducers,\r\n Name extends string = string\r\n> {\r\n /**\r\n * The slice name.\r\n */\r\n name: Name\r\n\r\n /**\r\n * The slice's reducer.\r\n */\r\n reducer: Reducer\r\n\r\n /**\r\n * Action creators for the types of actions that are handled by the slice\r\n * reducer.\r\n */\r\n actions: CaseReducerActions\r\n\r\n /**\r\n * The individual case reducer functions that were passed in the `reducers` parameter.\r\n * This enables reuse and testing if they were defined inline when calling `createSlice`.\r\n */\r\n caseReducers: SliceDefinedCaseReducers\r\n}\r\n\r\n/**\r\n * Options for `createSlice()`.\r\n *\r\n * @public\r\n */\r\nexport interface CreateSliceOptions<\r\n State = any,\r\n CR extends SliceCaseReducers = SliceCaseReducers,\r\n Name extends string = string\r\n> {\r\n /**\r\n * The slice's name. Used to namespace the generated action types.\r\n */\r\n name: Name\r\n\r\n /**\r\n * The initial state to be returned by the slice reducer.\r\n */\r\n initialState: State\r\n\r\n /**\r\n * A mapping from action types to action-type-specific *case reducer*\r\n * functions. For every action type, a matching action creator will be\r\n * generated using `createAction()`.\r\n */\r\n reducers: ValidateSliceCaseReducers\r\n\r\n /**\r\n * A callback that receives a *builder* object to define\r\n * case reducers via calls to `builder.addCase(actionCreatorOrType, reducer)`.\r\n * \r\n * Alternatively, a mapping from action types to action-type-specific *case reducer*\r\n * functions. These reducers should have existing action types used\r\n * as the keys, and action creators will _not_ be generated.\r\n * \r\n * @example\r\n```ts\r\nimport { createAction, createSlice, Action, AnyAction } from '@reduxjs/toolkit'\r\nconst incrementBy = createAction('incrementBy')\r\nconst decrement = createAction('decrement')\r\n\r\ninterface RejectedAction extends Action {\r\n error: Error\r\n}\r\n\r\nfunction isRejectedAction(action: AnyAction): action is RejectedAction {\r\n return action.type.endsWith('rejected')\r\n}\r\n\r\ncreateSlice({\r\n name: 'counter',\r\n initialState: 0,\r\n reducers: {},\r\n extraReducers: builder => {\r\n builder\r\n .addCase(incrementBy, (state, action) => {\r\n // action is inferred correctly here if using TS\r\n })\r\n // You can chain calls, or have separate `builder.addCase()` lines each time\r\n .addCase(decrement, (state, action) => {})\r\n // You can match a range of action types\r\n .addMatcher(\r\n isRejectedAction,\r\n // `action` will be inferred as a RejectedAction due to isRejectedAction being defined as a type guard\r\n (state, action) => {}\r\n )\r\n // and provide a default case if no other handlers matched\r\n .addDefaultCase((state, action) => {})\r\n }\r\n})\r\n```\r\n */\r\n extraReducers?:\r\n | CaseReducers, any>\r\n | ((builder: ActionReducerMapBuilder>) => void)\r\n}\r\n\r\n/**\r\n * A CaseReducer with a `prepare` method.\r\n *\r\n * @public\r\n */\r\nexport type CaseReducerWithPrepare = {\r\n reducer: CaseReducer\r\n prepare: PrepareAction\r\n}\r\n\r\n/**\r\n * The type describing a slice's `reducers` option.\r\n *\r\n * @public\r\n */\r\nexport type SliceCaseReducers = {\r\n [K: string]:\r\n | CaseReducer>\r\n | CaseReducerWithPrepare