From d1f0ae690eaf101274866b3f03653c1e3df50cfb Mon Sep 17 00:00:00 2001
From: hupe1980 <hupe1980@users.noreply.github.com>
Date: Fri, 17 May 2019 12:36:05 +0200
Subject: [PATCH] fix(gatsby-plugin-offline): Drop preload link for json from
 offline shell (#13935)

---
 .../gatsby-plugin-offline/src/gatsby-ssr.js   | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 packages/gatsby-plugin-offline/src/gatsby-ssr.js

diff --git a/packages/gatsby-plugin-offline/src/gatsby-ssr.js b/packages/gatsby-plugin-offline/src/gatsby-ssr.js
new file mode 100644
index 0000000000000..0272af166ae8d
--- /dev/null
+++ b/packages/gatsby-plugin-offline/src/gatsby-ssr.js
@@ -0,0 +1,21 @@
+export const onPreRenderHTML = ({
+  getHeadComponents,
+  pathname,
+  replaceHeadComponents,
+}) => {
+  if (pathname !== `/offline-plugin-app-shell-fallback/`) return
+
+  const headComponents = getHeadComponents()
+
+  const filteredHeadComponents = headComponents.filter(
+    ({ type, props }) =>
+      !(
+        type === `link` &&
+        props.as === `fetch` &&
+        props.rel === `preload` &&
+        props.href.startsWith(`/static/d/`)
+      )
+  )
+
+  replaceHeadComponents(filteredHeadComponents)
+}