From e774ef34ac7de7badf83f8560cca13861e76f23c Mon Sep 17 00:00:00 2001
From: "Michael \"Z\" Goddard" <mzgoddard@gmail.com>
Date: Mon, 13 Aug 2018 17:21:56 -0400
Subject: [PATCH] fix: return value from updateMd5CacheItem

Return a value so that a second call to updateMd5CacheItem on the
stored promise is given the input the first call received to keep from
throwing an error.
---
 lib/CacheMd5.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/CacheMd5.js b/lib/CacheMd5.js
index b1ace2cb..f31e8495 100644
--- a/lib/CacheMd5.js
+++ b/lib/CacheMd5.js
@@ -382,6 +382,11 @@ class Md5Cache {
                 md5Cache[file] = value;
                 cachedMd5s[file] = value.hash;
               }
+
+              // If somehow dependencies operates on a file in both file and
+              // context, or otherwise doubles up, return value so the second
+              // call receives input.
+              return value;
             }
 
             const building = buildingMd5s[file];