From 80a856f8dd44179e024c9b91cc6cb12988ff9973 Mon Sep 17 00:00:00 2001
From: Espen Hovlandsdal <espen@hovlandsdal.com>
Date: Fri, 21 Dec 2018 02:30:49 +0100
Subject: [PATCH] fix(gatsby): fix eventemitter leak in page query runner
 (#10593)

---
 .../src/internal-plugins/query-runner/page-query-runner.js  | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/gatsby/src/internal-plugins/query-runner/page-query-runner.js b/packages/gatsby/src/internal-plugins/query-runner/page-query-runner.js
index 04ab41dd3f0ed..09aeb7902bf46 100644
--- a/packages/gatsby/src/internal-plugins/query-runner/page-query-runner.js
+++ b/packages/gatsby/src/internal-plugins/query-runner/page-query-runner.js
@@ -162,9 +162,11 @@ const runQueriesForPathnames = pathnames => {
   }
 
   return new Promise(resolve => {
-    queue.on(`drain`, () => {
+    const onDrain = () => {
+      queue.off(`drain`, onDrain)
       resolve()
-    })
+    }
+    queue.on(`drain`, onDrain)
   })
 }