From 98beb6dbd89263256e1a89eb3864054ec2b417ce Mon Sep 17 00:00:00 2001
From: Tom MacWright <tmcw@users.noreply.github.com>
Date: Fri, 18 Nov 2016 20:20:46 -0500
Subject: [PATCH] Check length before assigning to a return tag (#606)

---
 lib/infer/return.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/infer/return.js b/lib/infer/return.js
index 27f7d9b..790aa7a 100644
--- a/lib/infer/return.js
+++ b/lib/infer/return.js
@@ -32,7 +32,7 @@ module.exports = function () {
       fn.returnType &&
       fn.returnType.typeAnnotation) {
       var returnType = flowDoctrine(fn.returnType.typeAnnotation);
-      if (comment.returns) {
+      if (comment.returns && comment.returns.length > 0) {
         comment.returns[0].type = returnType;
       } else {
         comment.returns = [{