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import type { ThunkDispatch, UnknownAction } from '@reduxjs/toolkit'
import type {
FetchBaseQueryError,
FetchBaseQueryMeta,
RootState,
TypedMutationOnQueryStarted,
TypedQueryOnQueryStarted,
} from '@reduxjs/toolkit/query'
import { createApi, fetchBaseQuery } from '@reduxjs/toolkit/query'
const api = createApi({
baseQuery: fetchBaseQuery({ baseUrl: 'https://example.com' }),
endpoints: () => ({}),
})
describe('type tests', () => {
test(`mutation: onStart and onSuccess`, async () => {
const extended = api.injectEndpoints({
overrideExisting: true,
endpoints: (build) => ({
injected: build.mutation<number, string>({
query: () => '/success',
async onQueryStarted(arg, { queryFulfilled }) {
// awaiting without catching like this would result in an `unhandledRejection` exception if there was an error
// unfortunately we cannot test for that in jest.
const result = await queryFulfilled
expectTypeOf(result).toMatchTypeOf<{
data: number
meta?: FetchBaseQueryMeta
}>()
},
}),
}),
})
})
test('query types', () => {
const extended = api.injectEndpoints({
overrideExisting: true,
endpoints: (build) => ({
injected: build.query<number, string>({
query: () => '/success',
async onQueryStarted(arg, { queryFulfilled }) {
queryFulfilled.then(
(result) => {
expectTypeOf(result).toMatchTypeOf<{
data: number
meta?: FetchBaseQueryMeta
}>()
},
(reason) => {
if (reason.isUnhandledError) {
expectTypeOf(reason).toEqualTypeOf<{
error: unknown
meta?: undefined
isUnhandledError: true
}>()
} else {
expectTypeOf(reason).toEqualTypeOf<{
error: FetchBaseQueryError
isUnhandledError: false
meta: FetchBaseQueryMeta | undefined
}>()
}
},
)
queryFulfilled.catch((reason) => {
if (reason.isUnhandledError) {
expectTypeOf(reason).toEqualTypeOf<{
error: unknown
meta?: undefined
isUnhandledError: true
}>()
} else {
expectTypeOf(reason).toEqualTypeOf<{
error: FetchBaseQueryError
isUnhandledError: false
meta: FetchBaseQueryMeta | undefined
}>()
}
})
const result = await queryFulfilled
expectTypeOf(result).toMatchTypeOf<{
data: number
meta?: FetchBaseQueryMeta
}>()
},
}),
}),
})
})
test('mutation types', () => {
const extended = api.injectEndpoints({
overrideExisting: true,
endpoints: (build) => ({
injected: build.query<number, string>({
query: () => '/success',
async onQueryStarted(arg, { queryFulfilled }) {
queryFulfilled.then(
(result) => {
expectTypeOf(result).toMatchTypeOf<{
data: number
meta?: FetchBaseQueryMeta
}>()
},
(reason) => {
if (reason.isUnhandledError) {
expectTypeOf(reason).toEqualTypeOf<{
error: unknown
meta?: undefined
isUnhandledError: true
}>()
} else {
expectTypeOf(reason).toEqualTypeOf<{
error: FetchBaseQueryError
isUnhandledError: false
meta: FetchBaseQueryMeta | undefined
}>()
}
},
)
queryFulfilled.catch((reason) => {
if (reason.isUnhandledError) {
expectTypeOf(reason).toEqualTypeOf<{
error: unknown
meta?: undefined
isUnhandledError: true
}>()
} else {
expectTypeOf(reason).toEqualTypeOf<{
error: FetchBaseQueryError
isUnhandledError: false
meta: FetchBaseQueryMeta | undefined
}>()
}
})
const result = await queryFulfilled
expectTypeOf(result).toMatchTypeOf<{
data: number
meta?: FetchBaseQueryMeta
}>()
},
}),
}),
})
})
describe('typed `onQueryStarted` function', () => {
test('TypedQueryOnQueryStarted creates a pre-typed version of onQueryStarted', () => {
type Post = {
id: number
title: string
userId: number
}
type PostsApiResponse = {
posts: Post[]
total: number
skip: number
limit: number
}
type QueryArgument = number | undefined
type BaseQueryFunction = ReturnType<typeof fetchBaseQuery>
const baseApiSlice = createApi({
baseQuery: fetchBaseQuery({ baseUrl: 'https://dummyjson.com' }),
reducerPath: 'postsApi',
tagTypes: ['Posts'],
endpoints: (builder) => ({
getPosts: builder.query<PostsApiResponse, void>({
query: () => `/posts`,
}),
getPostById: builder.query<Post, QueryArgument>({
query: (postId) => `/posts/${postId}`,
}),
}),
})
const updatePostOnFulfilled: TypedQueryOnQueryStarted<
PostsApiResponse,
QueryArgument,
BaseQueryFunction,
'postsApi'
> = async (queryArgument, queryLifeCycleApi) => {
const {
dispatch,
extra,
getCacheEntry,
getState,
queryFulfilled,
requestId,
updateCachedData,
} = queryLifeCycleApi
expectTypeOf(queryArgument).toEqualTypeOf<QueryArgument>()
expectTypeOf(dispatch).toEqualTypeOf<
ThunkDispatch<any, any, UnknownAction>
>()
expectTypeOf(extra).toBeUnknown()
expectTypeOf(getState).toEqualTypeOf<
() => RootState<any, any, 'postsApi'>
>()
expectTypeOf(requestId).toBeString()
expectTypeOf(getCacheEntry).toBeFunction()
expectTypeOf(updateCachedData).toEqualTypeOf<
(updateRecipe: Recipe<PostsApiResponse>) => PatchCollection
>()
expectTypeOf(queryFulfilled).resolves.toEqualTypeOf<{
data: PostsApiResponse
meta: FetchBaseQueryMeta | undefined
}>()
const result = await queryFulfilled
const { posts } = result.data
dispatch(
baseApiSlice.util.upsertQueryEntries(
posts.map((post) => ({
// Without `as const` this will result in a TS error in TS 4.7.
endpointName: 'getPostById' as const,
arg: post.id,
value: post,
})),
),
)
}
const extendedApiSlice = baseApiSlice.injectEndpoints({
endpoints: (builder) => ({
getPostsByUserId: builder.query<PostsApiResponse, QueryArgument>({
query: (userId) => `/posts/user/${userId}`,
onQueryStarted: updatePostOnFulfilled,
}),
}),
})
})
test('TypedMutationOnQueryStarted creates a pre-typed version of onQueryStarted', () => {
type Post = {
id: number
title: string
userId: number
}
type PostsApiResponse = {
posts: Post[]
total: number
skip: number
limit: number
}
type QueryArgument = Pick<Post, 'id'> & Partial<Post>
type BaseQueryFunction = ReturnType<typeof fetchBaseQuery>
const baseApiSlice = createApi({
baseQuery: fetchBaseQuery({ baseUrl: 'https://dummyjson.com' }),
reducerPath: 'postsApi',
tagTypes: ['Posts'],
endpoints: (builder) => ({
getPosts: builder.query<PostsApiResponse, void>({
query: () => `/posts`,
}),
getPostById: builder.query<Post, number>({
query: (postId) => `/posts/${postId}`,
}),
}),
})
const updatePostOnFulfilled: TypedMutationOnQueryStarted<
Post,
QueryArgument,
BaseQueryFunction,
'postsApi'
> = async (queryArgument, mutationLifeCycleApi) => {
const { id, ...patch } = queryArgument
const {
dispatch,
extra,
getCacheEntry,
getState,
queryFulfilled,
requestId,
} = mutationLifeCycleApi
const patchCollection = dispatch(
baseApiSlice.util.updateQueryData('getPostById', id, (draftPost) => {
Object.assign(draftPost, patch)
}),
)
expectTypeOf(queryFulfilled).resolves.toEqualTypeOf<{
data: Post
meta: FetchBaseQueryMeta | undefined
}>()
expectTypeOf(queryArgument).toEqualTypeOf<QueryArgument>()
expectTypeOf(dispatch).toEqualTypeOf<
ThunkDispatch<any, any, UnknownAction>
>()
expectTypeOf(extra).toBeUnknown()
expectTypeOf(getState).toEqualTypeOf<
() => RootState<any, any, 'postsApi'>
>()
expectTypeOf(requestId).toBeString()
expectTypeOf(getCacheEntry).toBeFunction()
expectTypeOf(mutationLifeCycleApi).not.toHaveProperty(
'updateCachedData',
)
try {
await queryFulfilled
} catch {
patchCollection.undo()
}
}
const extendedApiSlice = baseApiSlice.injectEndpoints({
endpoints: (builder) => ({
addPost: builder.mutation<Post, Omit<QueryArgument, 'id'>>({
query: (body) => ({
url: `posts/add`,
method: 'POST',
body,
}),
onQueryStarted: updatePostOnFulfilled,
}),
updatePost: builder.mutation<Post, QueryArgument>({
query: ({ id, ...patch }) => ({
url: `post/${id}`,
method: 'PATCH',
body: patch,
}),
onQueryStarted: updatePostOnFulfilled,
}),
}),
})
})
})
})
|