feat(fetch): support custom mutator

packages/fetch/src/index.ts

@@ -20,6 +20,7 @@ const generateRequestFunction = (
     queryParams,
     operationName,
     response,
+    mutator,
     body,
     props,
     verb,
@@ -94,17 +95,15 @@ ${
     ? `body: JSON.stringify(${requestBodyParams})`
     : '';
 
-  const fetchResponseImplementation = `const res = await fetch(
-    ${getUrlFnName}(${getUrlFnProperties}),
-    {${globalFetchOptions ? '\n' : ''}      ${globalFetchOptions}
-      ${isRequestOptions ? '...options,' : ''}
-      ${fetchMethodOption}${fetchBodyOption ? ',' : ''}
-      ${fetchBodyOption}
-    }
-  )
-
-  return res.json()
+  const fetchFnOptions = `${getUrlFnName}(${getUrlFnProperties}),
+  {${globalFetchOptions ? '\n' : ''}      ${globalFetchOptions}
+    ${isRequestOptions ? '...options,' : ''}
+    ${fetchMethodOption}${fetchBodyOption ? ',' : ''}
+    ${fetchBodyOption}
+  }
 `;
+  const fetchResponseImplementation = `const res = await fetch(${fetchFnOptions})\n\nreturn res.json()`;
+  const customFetchResponseImplementation = `return ${mutator?.name}<${retrunType}>(${fetchFnOptions});`;
 
   const bodyForm = generateFormDataAndUrlEncodedFunction({
     formData,
@@ -114,8 +113,10 @@ ${
     isFormUrlEncoded,
   });
 
-  const fetchImplementationBody =
-    `${bodyForm ? `  ${bodyForm}\n` : ''}` + `  ${fetchResponseImplementation}`;
+  const fetchImplementationBody = mutator
+    ? customFetchResponseImplementation
+    : `${bodyForm ? `  ${bodyForm}\n` : ''}` +
+      `  ${fetchResponseImplementation}`;
   const fetchImplementation = `export const ${operationName} = async (${args}): ${retrunType} => {\n${fetchImplementationBody}}`;
 
   const implementation =

samples/next-app-with-fetch/app/gen/models/cat.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/catType.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/createPetsBodyItem.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/dachshund.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/dachshundBreed.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/dog.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/dogType.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/error.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/index.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/labradoodle.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/labradoodleBreed.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/listPetsParams.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/pet.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/petCallingCode.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/petCountry.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/models/pets.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/pets/pets.msw.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0

samples/next-app-with-fetch/app/gen/pets/pets.ts

@@ -1,5 +1,5 @@
 /**
- * Generated by orval v6.29.1 🍺
+ * Generated by orval v6.30.2 🍺
  * Do not edit manually.
  * Swagger Petstore
  * OpenAPI spec version: 1.0.0
@@ -10,6 +10,7 @@ import type {
   Pet,
   Pets,
 } from '.././models';
+import { customFetch } from '../../../custom-fetch';
 
 // https://stackoverflow.com/questions/49579094/typescript-conditional-types-filter-out-readonly-properties-pick-only-requir/49579497#49579497
 type IfEquals<X, Y, A = X, B = never> =
@@ -60,12 +61,10 @@ export const listPets = async (
   params?: ListPetsParams,
   options?: RequestInit,
 ): Promise<Pets> => {
-  const res = await fetch(getListPetsUrl(params), {
+  return customFetch<Promise<Pets>>(getListPetsUrl(params), {
     ...options,
     method: 'GET',
   });
-
-  return res.json();
 };
 
 /**
@@ -79,13 +78,11 @@ export const createPets = async (
   createPetsBodyItem: CreatePetsBodyItem[],
   options?: RequestInit,
 ): Promise<Pet> => {
-  const res = await fetch(getCreatePetsUrl(), {
+  return customFetch<Promise<Pet>>(getCreatePetsUrl(), {
     ...options,
     method: 'POST',
     body: JSON.stringify(createPetsBodyItem),
   });
-
-  return res.json();
 };
 
 /**
@@ -99,13 +96,11 @@ export const updatePets = async (
   pet: NonReadonly<Pet>,
   options?: RequestInit,
 ): Promise<Pet> => {
-  const res = await fetch(getUpdatePetsUrl(), {
+  return customFetch<Promise<Pet>>(getUpdatePetsUrl(), {
     ...options,
     method: 'PUT',
     body: JSON.stringify(pet),
   });
-
-  return res.json();
 };
 
 /**
@@ -119,10 +114,8 @@ export const showPetById = async (
   petId: string,
   options?: RequestInit,
 ): Promise<Pet> => {
-  const res = await fetch(getShowPetByIdUrl(petId), {
+  return customFetch<Promise<Pet>>(getShowPetByIdUrl(petId), {
     ...options,
     method: 'GET',
   });
-
-  return res.json();
 };

samples/next-app-with-fetch/custom-fetch.ts

@@ -0,0 +1,57 @@
+// NOTE: Supports cases where `content-type` is other than `json`
+const getBody = <T>(c: Response | Request): Promise<T> => {
+  const contentType = c.headers.get('content-type');
+
+  if (contentType && contentType.includes('application/json')) {
+    return c.json();
+  }
+
+  if (contentType && contentType.includes('application/pdf')) {
+    return c.blob() as Promise<T>;
+  }
+
+  return c.text() as Promise<T>;
+};
+
+// NOTE: Update just base url
+const getUrl = (contextUrl: string): string => {
+  const url = new URL(contextUrl);
+  const pathname = url.pathname;
+  const search = url.search;
+  const baseUrl =
+    process.env.NODE_ENV === 'production'
+      ? 'productionBaseUrl'
+      : 'http://localhost:3000';
+
+  const requestUrl = new URL(`${baseUrl}${pathname}${search}`);
+
+  return requestUrl.toString();
+};
+
+// NOTE: Add headers
+const getHeaders = (headers?: HeadersInit): HeadersInit => {
+  return {
+    ...headers,
+    Authorization: 'token',
+    'Content-Type': 'multipart/form-data',
+  };
+};
+
+export const customFetch = async <T>(
+  url: string,
+  options: RequestInit,
+): Promise<T> => {
+  const requestUrl = getUrl(url);
+  const requestHeaders = getHeaders(options.headers);
+
+  const requestInit: RequestInit = {
+    ...options,
+    headers: requestHeaders,
+  };
+
+  const request = new Request(requestUrl, requestInit);
+  const response = await fetch(request);
+  const data = await getBody<T>(response);
+
+  return data;
+};

samples/next-app-with-fetch/orval.config.ts

@@ -10,6 +10,12 @@ export default defineConfig({
       baseUrl: 'http://localhost:3000',
       mock: true,
       prettier: true,
+      override: {
+        mutator: {
+          path: './custom-fetch.ts',
+          name: 'customFetch',
+        },
+      },
     },
     input: {
       target: './petstore.yaml',