chore(tests): test that custom config is passed to fetch

closes #506

examples/configuration-fetch-options.ts

@@ -19,7 +19,12 @@ const query = gql`
 `
 
 interface Data {
-  Movie: { releaseDate: string; actors: Array<{ name: string }> }
+  Movie: {
+    releaseDate: string
+    actors: {
+      name: string
+    }[]
+  }
 }
 
 const data = await graphQLClient.request<Data>(query)

src/types.ts

@@ -81,12 +81,12 @@ export type MaybeLazy<T> = T | (() => T)
 
 export type RequestDocument = string | DocumentNode
 
-export interface GraphQLClientResponse<T> {
-  data: T
-  extensions?: unknown
+export interface GraphQLClientResponse<Data> {
+  status: number
   headers: Headers
+  data: Data
+  extensions?: unknown
   errors?: GraphQLError[]
-  status: number
 }
 
 export type HTTPMethodInput = 'GET' | 'POST' | 'get' | 'post'

tests/fetch.test.ts

@@ -0,0 +1,18 @@
+import { gql, GraphQLClient } from '../src/index.js'
+import { Headers } from 'cross-fetch'
+import { expect, test, vitest } from 'vitest'
+
+test(`custom fetch configuration is passed through`, async () => {
+  const fetch = vitest.fn().mockResolvedValue({ ok: true, headers: new Headers(), text: () => ``, data: {} })
+  const client = new GraphQLClient(`https://foobar`, {
+    fetch,
+    // @ts-expect-error extended fetch options
+    next: {
+      revalidate: 1,
+    },
+  })
+  await client.request(gql`foo`).catch(() => {
+    /* ignore */
+  })
+  expect(fetch.mock.calls).toMatchObject([[expect.stringMatching(`.*`), { next: { revalidate: 1 } }]])
+})