Merge pull request #290 from leebyron/patch-1

Make AsyncIterator comply with AsyncIterable by supporting a this-returning Symbol.asyncIterator method.
facebook · Apr 26, 2017 · 2047ff4 · 2047ff4
2 parents f2579fc + 379c86b
commit 2047ff4
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/packages/regenerator-runtime/runtime.js b/packages/regenerator-runtime/runtime.js
@@ -16,6 +16,7 @@
   var undefined; // More compressible than void 0.
   var $Symbol = typeof Symbol === "function" ? Symbol : {};
   var iteratorSymbol = $Symbol.iterator || "@@iterator";
+  var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
   var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
 
   var inModule = typeof module === "object";
@@ -229,6 +230,9 @@
   }
 
   defineIteratorMethods(AsyncIterator.prototype);
+  AsyncIterator.prototype[asyncIteratorSymbol] = function () {
+    return this;
+  };
   runtime.AsyncIterator = AsyncIterator;
 
   // Note that simple async functions are implemented on top of