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Prevent inference of any in create.asyncThunk #4389

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Merged
merged 2 commits into from
May 9, 2024
Merged

Prevent inference of any in create.asyncThunk #4389

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0007885
Prevent inference of any in create.asyncThunk
EskiMojo14 May 3, 2024
10fae1a
fix test
EskiMojo14 May 4, 2024
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12 changes: 2 additions & 10 deletions packages/toolkit/src/createSlice.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -427,15 +427,7 @@ export interface ReducerCreators<State> {
* @public
*/
export type SliceCaseReducers<State> =
| Record<
string,
| CaseReducerDefinition<State, PayloadAction<any>>
| CaseReducerWithPrepareDefinition<
State,
PayloadAction<any, string, any, any>
>
| AsyncThunkSliceReducerDefinition<State, any, any, any>
>
| Record<string, ReducerDefinition>
| Record<
string,
| CaseReducer<State, PayloadAction<any>>
Expand Down Expand Up @@ -692,7 +684,7 @@ export function buildCreateSlice({ creators }: BuildCreateSliceConfig = {}) {
} else {
handleNormalReducerDefinition<State>(
reducerDetails,
reducerDefinition,
reducerDefinition as any,
contextMethods,
)
}
Expand Down
38 changes: 38 additions & 0 deletions packages/toolkit/src/tests/createSlice.test-d.ts
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Expand Up @@ -652,6 +652,38 @@ describe('type tests', () => {
expectTypeOf(action.error).toEqualTypeOf<'error'>()
},
),
testInferVoid: create.asyncThunk(() => {}, {
pending(state, action) {
expectTypeOf(state).toEqualTypeOf<TestState>()

expectTypeOf(action.meta.arg).toBeVoid()
},
fulfilled(state, action) {
expectTypeOf(state).toEqualTypeOf<TestState>()

expectTypeOf(action.meta.arg).toBeVoid()

expectTypeOf(action.payload).toBeVoid()
},
rejected(state, action) {
expectTypeOf(state).toEqualTypeOf<TestState>()

expectTypeOf(action.meta.arg).toBeVoid()

expectTypeOf(action.error).toEqualTypeOf<SerializedError>()
},
settled(state, action) {
expectTypeOf(state).toEqualTypeOf<TestState>()

expectTypeOf(action.meta.arg).toBeVoid()

if (isRejected(action)) {
expectTypeOf(action.error).toEqualTypeOf<SerializedError>()
} else {
expectTypeOf(action.payload).toBeVoid()
}
},
}),
testInfer: create.asyncThunk(
function payloadCreator(arg: TestArg, api) {
return Promise.resolve<TestReturned>({ payload: 'foo' })
Expand Down Expand Up @@ -856,6 +888,12 @@ describe('type tests', () => {
>
>()

expectTypeOf(slice.actions.testInferVoid).toEqualTypeOf<
AsyncThunk<void, void, {}>
>()

expectTypeOf(slice.actions.testInferVoid).toBeCallableWith()

expectTypeOf(slice.actions.testInfer).toEqualTypeOf<
AsyncThunk<TestReturned, TestArg, {}>
>()
Expand Down
7 changes: 3 additions & 4 deletions packages/toolkit/src/tests/createSlice.test.ts
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Expand Up @@ -678,7 +678,7 @@ describe('createSlice', () => {
initialState: [] as any[],
reducers: (create) => ({
thunkReducers: create.asyncThunk(
function payloadCreator(arg, api) {
function payloadCreator(arg: string, api) {
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Hmmm... This brings up the question: will this still be okay in an untyped .js file for non-TS-users or will it make it unusable?

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it's the same behaviour as createAsyncThunk. if they're not using type checking on their JS there will be nothing to complain, and if they are then they'll need to annotate:

const getPost = createAsyncThunk(
  'posts/getPost',
  /**
   *
   * @param {number} id
   * @returns {Promise<Post>}
   */
  async (id) => {
    const response = await fetch(
      `https://jsonplaceholder.typicode.com/posts/${id}`,
    )
    const data = await response.json()
    return data
  },
)

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you can even set the ApiConfig:

const getPost = createAsyncThunk(
  'posts/getPost',
  /** @type {import("@reduxjs/toolkit").AsyncThunkPayloadCreator<Post, number, { state: RootState }>}*/
  async (id, api) => {
    const response = await fetch(
      `https://jsonplaceholder.typicode.com/posts/${id}`,
    )
    const data = await response.json()
    return data
  },
)

return Promise.resolve('resolved payload')
},
{ pending, fulfilled, rejected, settled },
Expand Down Expand Up @@ -722,7 +722,7 @@ describe('createSlice', () => {
reducers: (create) => ({
thunkReducers: create.asyncThunk(
// payloadCreator isn't allowed to return never
function payloadCreator(arg, api): any {
function payloadCreator(arg: string, api): any {
throw new Error('')
},
{ pending, fulfilled, rejected, settled },
Expand Down Expand Up @@ -765,7 +765,7 @@ describe('createSlice', () => {
initialState: [] as any[],
reducers: (create) => ({
thunkReducers: create.asyncThunk(
function payloadCreator(arg, api) {
function payloadCreator(arg: string, api) {
return 'should not call this'
},
{
Expand Down Expand Up @@ -833,7 +833,6 @@ describe('createSlice', () => {
slice.actions.thunkReducers.rejected(
new Error('test'),
'fakeRequestId',
{},
),
),
).not.toThrow()
Expand Down