From 468a7629e7c13dd3585c33e467e79bbc07af5a13 Mon Sep 17 00:00:00 2001
From: afc163 <afc163@gmail.com>
Date: Wed, 7 Mar 2018 15:43:32 +0800
Subject: [PATCH] site: fix intersection-observer polyfill

---
 package.json                                | 1 +
 site/theme/template/Content/MainContent.jsx | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index dfda7d18d1..238ad4b7db 100644
--- a/package.json
+++ b/package.json
@@ -125,6 +125,7 @@
     "fetch-jsonp": "^1.0.3",
     "glob": "^7.1.1",
     "immutability-helper": "^2.5.0",
+    "intersection-observer": "^0.5.0",
     "jest": "^22.4.2",
     "jsonml.js": "^0.1.0",
     "lint-staged": "^7.0.0",
diff --git a/site/theme/template/Content/MainContent.jsx b/site/theme/template/Content/MainContent.jsx
index 0b181520d8..7183b2a23e 100644
--- a/site/theme/template/Content/MainContent.jsx
+++ b/site/theme/template/Content/MainContent.jsx
@@ -85,8 +85,8 @@ export default class MainContent extends React.Component {
     if (this.scroller) {
       this.scroller.disable();
     }
-    // eslint-disable-next-line
-    const scrollama = require('scrollama');
+    require('intersection-observer'); // eslint-disable-line
+    const scrollama = require('scrollama'); // eslint-disable-line
     this.scroller = scrollama();
     this.scroller
       .setup({