From 9643859d037508fb1df09807f28e433307a86bcb Mon Sep 17 00:00:00 2001
From: xx <xxgjzftd@gmail.com>
Date: Wed, 25 Aug 2021 14:46:06 +0800
Subject: [PATCH 1/2] fix: improve browser compatibility

---
 src/common.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common.js b/src/common.js
index 3321765d..8cb7209c 100755
--- a/src/common.js
+++ b/src/common.js
@@ -66,8 +66,8 @@ export const featureDetectionPromise = Promise.all([
     };
     const iframe = document.createElement('iframe');
     iframe.style.display = 'none';
-    iframe.srcdoc = `<script type=importmap>{"imports":{"x":"data:text/javascript,"}}<${''}/script><script>import('x').then(()=>1,()=>0).then(v=>parent._$s(v))<${''}/script>`, 'text/html';
     document.body.appendChild(iframe);
+    iframe.contentWindow.document.write(`<script type=importmap>{"imports":{"x":"data:text/javascript,"}}<${''}/script><script>import('x').then(()=>1,()=>0).then(v=>parent._$s(v))<${''}/script>`);
   })
 ]);
 

From e5846392f300a4f95a02c407080e0e1c815691b9 Mon Sep 17 00:00:00 2001
From: Guy Bedford <guybedford@gmail.com>
Date: Thu, 26 Aug 2021 07:45:00 -0700
Subject: [PATCH 2/2] Update src/common.js

---
 src/common.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/common.js b/src/common.js
index 8cb7209c..1be9fc09 100755
--- a/src/common.js
+++ b/src/common.js
@@ -67,6 +67,7 @@ export const featureDetectionPromise = Promise.all([
     const iframe = document.createElement('iframe');
     iframe.style.display = 'none';
     document.body.appendChild(iframe);
+    // we use document.write here because eg Weixin built-in browser doesn't support setting srcdoc
     iframe.contentWindow.document.write(`<script type=importmap>{"imports":{"x":"data:text/javascript,"}}<${''}/script><script>import('x').then(()=>1,()=>0).then(v=>parent._$s(v))<${''}/script>`);
   })
 ]);