From 7593d89b6bc971b78f6f6272fa14594cc5fe584a Mon Sep 17 00:00:00 2001
From: Jamie Barton <jamie@notrab.dev>
Date: Tue, 30 Mar 2021 13:46:04 +0100
Subject: [PATCH] fix: return null for non images (#184)

* fix: dont return null for gatsby image data

* fix: return null for unless image mimeType
---
 gatsby-source-graphcms/src/gatsby-node.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gatsby-source-graphcms/src/gatsby-node.js b/gatsby-source-graphcms/src/gatsby-node.js
index 6b47c32..26b3cfc 100644
--- a/gatsby-source-graphcms/src/gatsby-node.js
+++ b/gatsby-source-graphcms/src/gatsby-node.js
@@ -348,7 +348,9 @@ function makeResolveGatsbyImageData(cache) {
     { handle: filename, height, mimeType, width, url, internal },
     options
   ) {
-    if (!mimeType.includes('image/')) {
+    if (
+      !['image/png', 'image/jpg', 'image/jpeg', 'image/tiff'].includes(mimeType)
+    ) {
       return null
     }