Add statusCode to Fetch-based requester

Author: spencerwilson-optimizely

packages/optimizely-sdk/lib/index.browser.js

@@ -40,6 +40,7 @@ async function browserRequester(url, headers) {
       acc[k] = v;
       return acc;
     }, {}),
+    statusCode: response.status,
   };
 }
 

packages/optimizely-sdk/lib/utils/config_cache.js

@@ -8,7 +8,8 @@ const { AsyncCache, enums } = require('./async_cache');
  */
 exports.PollingConfigCache = (defaultRequester) => class PollingConfigCache extends AsyncCache {
   constructor({
-    // An async function (url: string, headers: Object) => Promise<{headers, body}, Error> to make HTTP requests.
+    // An async function (url: string, headers: Object) => Promise<{headers, body, statusCode}, Error>
+    // to make HTTP requests.
     requester = defaultRequester,
     // A function that decides how to handle `getAsync` calls.
     onGetAsync = () => enums.refreshDirectives.YES_AWAIT,