restored ES5 compatibility

Author: scottinet

.eslintrc.json

@@ -55,7 +55,7 @@
     "mocha": true
   },
   "parserOptions": {
-    "ecmaVersion": 6
+    "ecmaVersion": 5
   },
   "extends": "eslint:recommended"
 }

dist/kuzzle.js

@@ -319,7 +319,7 @@ KuzzleDataCollection.prototype.fetchAllDocuments = function (options, cb) {
         console.warn('KuzzleDataCollection.fetchAllDocuments may return extremely large amounts of documents, which may cause performance issues. Unless you know what you are doing, consider using KuzzleDataCollection.search or KuzzleDataCollection.scroll instead'); // eslint-disable-line no-console
       }
 
-      searchResult.documents.forEach(document => {
+      searchResult.documents.forEach(function (document) {
         documents.push(document);
       });
       searchResult.next(getNextDocuments);

dist/kuzzle.js.map

@@ -5,5 +5,8 @@
     "no-new": 0,
     "new-cap": 0,
     "no-console": 0
+  },
+  "parserOptions": {
+    "ecmaVersion": 6
   }
 }