1 files changed, 19 insertions, 0 deletions
diff --git a/js/src/builtin/AsyncFunction.js b/js/src/builtin/AsyncFunction.js
new file mode 100644
index 0000000000..9ce2be8027
--- /dev/null
+++ b/js/src/builtin/AsyncFunction.js
@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+function AsyncFunctionNext(val) {
+  assert(
+    IsAsyncFunctionGeneratorObject(this),
+    "ThisArgument must be a generator object for async functions"
+  );
+  return resumeGenerator(this, val, "next");
+}
+
+function AsyncFunctionThrow(val) {
+  assert(
+    IsAsyncFunctionGeneratorObject(this),
+    "ThisArgument must be a generator object for async functions"
+  );
+  return resumeGenerator(this, val, "throw");
+}