1 files changed, 21 insertions, 0 deletions
diff --git a/site/docs/4.1/assets/js/src/pwa.js b/site/docs/4.1/assets/js/src/pwa.js
new file mode 100644
index 0000000000..9d2b7fbed5
--- /dev/null
+++ b/site/docs/4.1/assets/js/src/pwa.js
@@ -0,0 +1,21 @@
+// NOTICE!! DO NOT USE ANY OF THIS JAVASCRIPT
+// IT'S ALL JUST JUNK FOR OUR DOCS!
+// ++++++++++++++++++++++++++++++++++++++++++
+
+/* eslint no-console:off */
+
+(function () {
+  'use strict'
+
+  if ('serviceWorker' in navigator) {
+    window.addEventListener('load', function () {
+      navigator.serviceWorker.register('/sw.js').then(function (registration) {
+        console.log('ServiceWorker registration successful with scope: ', registration.scope)
+      }).catch(function (err) {
+        console.log('ServiceWorker registration failed: ', err)
+      })
+    })
+  } else {
+    console.log('Service workers are not supported.')
+  }
+}())