diff --git a/bower.json b/bower.json
index e3701e8..84af2c6 100644
--- a/bower.json
+++ b/bower.json
@@ -4,7 +4,7 @@
     "Microsoft Corp."
   ],
   "homepage": "http://typescriptlang.org/",
-  "version": "1.7.0",
+  "version": "1.7.1",
   "license": "Apache-2.0",
   "description": "Runtime library for TypeScript helper functions",
   "keywords": [
diff --git a/package.json b/package.json
index 099660e..a4eb77e 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "tslib",
     "author": "Microsoft Corp.",
     "homepage": "http://typescriptlang.org/",
-    "version": "1.7.0",
+    "version": "1.7.1",
     "license": "Apache-2.0",
     "description": "Runtime library for TypeScript helper functions",
     "keywords": [
diff --git a/tslib.es6.js b/tslib.es6.js
index 73c4c80..2202249 100644
--- a/tslib.es6.js
+++ b/tslib.es6.js
@@ -150,8 +150,8 @@ export function __asyncGenerator(thisArg, _arguments, generator) {
 
 export function __asyncDelegator(o) {
     var i, p;
-    return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
-    function verb(n) { if (o[n]) i[n] = function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === "return" } : v; }; }
+    return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
+    function verb(n, f) { if (o[n]) i[n] = function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === "return" } : f ? f(v) : v; }; }
 }
 
 export function __asyncValues(o) {
diff --git a/tslib.js b/tslib.js
index 850ae26..f8c5d0e 100644
--- a/tslib.js
+++ b/tslib.js
@@ -181,8 +181,8 @@ var __asyncValues;
 
     __asyncDelegator = function (o) {
         var i, p;
-        return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
-        function verb(n) { if (o[n]) i[n] = function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === "return" } : v; }; }
+        return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
+        function verb(n, f) { if (o[n]) i[n] = function (v) { return (p = !p) ? { value: __await(o[n](v)), done: n === "return" } : f ? f(v) : v; }; }
     };
 
     __asyncValues = function (o) {