bugfix - Should not capture headers in the closure

fixes emberjs#5061
eriktrom · Jul 12, 2017 · 9e5383c · 9e5383c
1 parent f77dbf9
commit 9e5383c
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/addon/adapters/rest.js b/addon/adapters/rest.js
@@ -1123,12 +1123,12 @@ const RESTAdapter = Adapter.extend(BuildURLMixin, {
       hash.data = JSON.stringify(hash.data);
     }
 
-    let headers = get(this, 'headers');
-    if (headers !== undefined) {
-      hash.beforeSend = function (xhr) {
-        Object.keys(headers).forEach((key) =>  xhr.setRequestHeader(key, headers[key]));
-      };
-    }
+    hash.beforeSend = (xhr) => {
+      let headers = get(this, 'headers');
+      if (headers !== undefined) {
+        Object.keys(headers).forEach((key) => xhr.setRequestHeader(key, headers[key]));
+      }
+    };
 
     return hash;
   },