fix: pass body to APIError

Author: Anton Konev

src/callAPIMethod.js

@@ -47,7 +47,7 @@ export default function callAPI(
     return fetch(url, accumulatedFetchOptions)
         .then( response => response[type || method]()
             .catch( () => {
-                if (!response.ok) throw new APIError(response.status, response.statusText);
+                if (!response.ok) throw new APIError(response.status, response.statusText, response.body);
 
                 return response.body || null;
             })
@@ -65,15 +65,14 @@ export default function callAPI(
                         'type',
                         'url',
                         'useFinalURL',
-                        'bodyUsed',
-                        'body'
+                        'bodyUsed'
                     ].reduce((res, key) => {
                         res[key] = response[key];
 
                         return res;
                     }, {});
 
-                    return Object.assign({}, writableResponse, { body: result });
+                    return { ...writableResponse, ...{ body: result } };
                 }
 
                 return result;

test/callAPIMethod.spec.js

@@ -7,7 +7,7 @@ import APIError from '../src/error';
 const matcher = '*';
 
 const Response200 = new Response(
-    JSON.stringify({ sample: 'data'}),
+    { sample: 'data'},
     {
         status: 200
     }
@@ -21,7 +21,7 @@ const Response201 = new Response(
 );
 
 const Response400 = new Response(
-    JSON.stringify({ sample: 'not found'}),
+    { sample: 'not found'},
     {
         status: 400
     }
@@ -172,13 +172,13 @@ test.serial('returns full response object', async t => {
 
     const APINamespace = 'rest-api';
     const namespace = 'user';
-    const fetchOptions = { method: 'POST'};
+    const fetchOptions = { method: 'POST' };
     const methodOptions = { path: 'path' };
     const responseOptions = { fullResponse: true };
 
     const result = await callAPIMethod(APINamespace, namespace, fetchOptions, methodOptions, responseOptions);
     const mockedResult = {
-        body: '{"sample":"data"}',
+        body: { sample: 'data' },
         bodyUsed: true,
         headers: (new Response()).headers,
         ok: true,