diff --git a/vendors/knockout/build/fragments/extern-post.js b/vendors/knockout/build/fragments/extern-post.js
new file mode 100644
index 000000000..9652d073b
--- /dev/null
+++ b/vendors/knockout/build/fragments/extern-post.js
@@ -0,0 +1,2 @@
+	window['ko'] = koExports;
+})(this);
diff --git a/vendors/knockout/build/fragments/extern-pre.js b/vendors/knockout/build/fragments/extern-pre.js
new file mode 100644
index 000000000..f71f9f900
--- /dev/null
+++ b/vendors/knockout/build/fragments/extern-pre.js
@@ -0,0 +1,7 @@
+(window => {
+    // (0, eval)('this') is a robust way of getting a reference to the global object
+    // For details, see http://stackoverflow.com/questions/14119988/return-this-0-evalthis/14120023#14120023
+    var document = window['document'],
+        navigator = window['navigator'],
+        JSON = window["JSON"],
+        koExports = {};