From 2bded404f3f8a92f4d3eb886a3137cad8eb23ed1 Mon Sep 17 00:00:00 2001
From: Jason Quense <monastic.panic@gmail.com>
Date: Tue, 17 Apr 2018 22:02:53 -0400
Subject: [PATCH] Improve asyncIterator error (#7745)

* Improve asyncIterator error

When an object is has neither asyncIterator or iterator defined, throw the "not an async iterable" error

* Correct logic

* reduce access

* Update helpers.js
---
 packages/babel-helpers/src/helpers.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/babel-helpers/src/helpers.js b/packages/babel-helpers/src/helpers.js
index c430819ba4..2d18fe71fd 100644
--- a/packages/babel-helpers/src/helpers.js
+++ b/packages/babel-helpers/src/helpers.js
@@ -72,13 +72,15 @@ helpers.jsx = () => template.program.ast`
 
 helpers.asyncIterator = () => template.program.ast`
   export default function _asyncIterator(iterable) {
+    var method
     if (typeof Symbol === "function") {
       if (Symbol.asyncIterator) {
-        var method = iterable[Symbol.asyncIterator];
+        method = iterable[Symbol.asyncIterator]
         if (method != null) return method.call(iterable);
       }
       if (Symbol.iterator) {
-        return iterable[Symbol.iterator]();
+        method = iterable[Symbol.iterator]
+        if (method != null) return method.call(iterable);
       }
     }
     throw new TypeError("Object is not async iterable");