unify javascript content delivery networks

currently there are 4 CDNs that are being called for different javascript libraries. this means that there are 4 different third-party requests being made on each load. why do it? the advantage of unifying all of the libraries from a single provider is that all of the requests can be served off a single connection if the connection is made over HTTP/2 essentially making the load times at least 2 times faster. why jsDelivr? jsDelivr has a wide network spanning [multiple caching network providers](https://www.jsdelivr.com/network) whereas the other providers rely on a single caching network ( unpkg, cdnjs - cloudflare, github - fastly ). while technically all the requests could probably be served from the same backend cache, since the requests are being proxied via different domains, naturally, they have to go through different connections. if all the requests are proxied through the same domain and via HTTP/2, the requests can all be served via the same connection making the page load faster. other changes - synced the library version for `ace/ext-language_tools` with the loaded `ace.js` library room for improvement - `react` and `babel-polyfill` libraries could be upgraded to the latest major versions. since I wasn't sure whether this would cause any breakage in the application, I didn't attempt an upgrade. I just used the already existing version but just changed the provider URL. Maybe a minor version upgrade ( react ) would do much harm? ( I didn't want to take the risk since it was react )
tddbin · Jun 5, 2020 · a93884a · a93884a
1 parent 2b7ebec
commit a93884a
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/src/_html/index.html b/src/_html/index.html
@@ -4,11 +4,11 @@
   <title>No-install TDD environment</title>
   <meta charset="utf-8">
   <link rel="icon" type="image/x-icon" href="favicon.ico" />
-  <script src="//unpkg.com/[email protected]/dist/xdomain.min.js" slave="${KATAS_SERVICE_URL}/proxy.html"></script>
-  <script type="text/javascript" src="//ajaxorg.github.io/ace-builds/src-min-noconflict/ace.js" charset="utf-8"></script>
-  <script type="text/javascript" src="//cdn.jsdelivr.net/ace/1.1.9/min/ext-language_tools.js" charset="utf-8"></script>
-  <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/react/15.5.4/react-with-addons.min.js"></script>
-  <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/babel-polyfill/6.26.0/polyfill.min.js"></script>
+  <script type="text/javascript" src="//cdn.jsdelivr.net/npm/[email protected]/dist/xdomain.min.js" slave="${KATAS_SERVICE_URL}/proxy.html"></script>
+  <script type="text/javascript" src="//cdn.jsdelivr.net/ace/1.2.6/min/ace.js" charset="utf-8"></script>
+  <script type="text/javascript" src="//cdn.jsdelivr.net/ace/1.2.6/min/ext-language_tools.js" charset="utf-8"></script>
+  <script type="text/javascript" src="//cdn.jsdelivr.net/react/15.5.4/react-with-addons.min.js"></script>
+  <script type="text/javascript" src="//cdn.jsdelivr.net/npm/babel-polyfill@6.26.0/polyfill.min.js"></script>
   <link type="text/css" href="style.css" rel="stylesheet"/>
 </head>
 <body>