diff --git a/src/util/assign.ts b/src/util/assign.ts
new file mode 100644
index 0000000000..f1ebd6c0f9
--- /dev/null
+++ b/src/util/assign.ts
@@ -0,0 +1,30 @@
+import {root} from './root';
+
+const Object = root.Object;
+
+if (typeof (<any>Object).assign != 'function') {
+  (function () {
+    (<any>Object).assign = function assignPolyfill(target: Object, ...sources: Array<Object>): Object {
+      if (target === undefined || target === null) {
+        throw new TypeError('Cannot convert undefined or null to object');
+      }
+
+      const output = Object(target);
+      const len = sources.length;
+      for (let index = 0; index < len; index++) {
+        let source = sources[index];
+        if (source !== undefined && source !== null) {
+          for (let key in source) {
+            if (source.hasOwnProperty(key)) {
+              output[key] = source[key];
+            }
+          }
+        }
+      }
+
+      return output;
+    };
+  })();
+}
+
+export const assign: (target: Object, ...sources: Array<Object>) => Object = Object.assign;
\ No newline at end of file