From f8e88ced7b1def52a7f4126615a82866aeec28d7 Mon Sep 17 00:00:00 2001
From: jackycoder <295687784@qq.com>
Date: Sun, 20 Sep 2020 18:55:29 +0800
Subject: [PATCH] compatibility fixes (#358)

* fix polyfill NodeList forEach

* contentDocument.contains for IE

* polyfill DOMTokenList forEach
---
 src/replay/index.ts | 10 +++++++++-
 src/utils.ts        |  5 +++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/replay/index.ts b/src/replay/index.ts
index 95f7796a..21be60cf 100644
--- a/src/replay/index.ts
+++ b/src/replay/index.ts
@@ -889,7 +889,15 @@ export class Replayer {
         return queue.push(mutation);
       }
 
-      const parentInDocument = this.iframe.contentDocument.contains(parent);
+      let parentInDocument = null;
+      if (this.iframe.contentDocument.contains) {
+        parentInDocument = this.iframe.contentDocument.contains(parent);
+      } else if (this.iframe.contentDocument.body.contains) {
+        // fix for IE
+        // refer 'Internet Explorer notes' at https://developer.mozilla.org/zh-CN/docs/Web/API/Document 
+        parentInDocument = this.iframe.contentDocument.body.contains(parent);
+      }
+
       if (useVirtualParent && parentInDocument) {
         const virtualParent = (document.createDocumentFragment() as unknown) as INode;
         mirror.map[mutation.parentId] = virtualParent;
diff --git a/src/utils.ts b/src/utils.ts
index ee1924df..9cf592d4 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -226,6 +226,11 @@ export function polyfill(win = window) {
     win.NodeList.prototype.forEach = (Array.prototype
       .forEach as unknown) as NodeList['forEach'];
   }
+
+  if ('DOMTokenList' in win && !win.DOMTokenList.prototype.forEach) {
+    win.DOMTokenList.prototype.forEach = (Array.prototype
+      .forEach as unknown) as DOMTokenList['forEach'];
+  }
 }
 
 export function needCastInSyncMode(event: eventWithTime): boolean {