diff -r c7c34916027a -r 177826044cd9 wp/wp-admin/js/plugin-install.js
--- a/wp/wp-admin/js/plugin-install.js	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-admin/js/plugin-install.js	Mon Oct 14 18:28:13 2019 +0200
@@ -1,9 +1,11 @@
-/* global plugininstallL10n, tb_click, tb_remove */
+/**
+ * @file Functionality for the plugin install screens.
+ *
+ * @output wp-admin/js/plugin-install.js
+ */
 
-/**
- * Functionality for the plugin install screens.
- */
-var tb_position;
+/* global plugininstallL10n, tb_click, tb_remove, tb_position */
+
 jQuery( document ).ready( function( $ ) {
 
 	var tbWindow,
@@ -16,7 +18,7 @@
 		$wrap = $ ( '.wrap' ),
 		$body = $( document.body );
 
-	tb_position = function() {
+	window.tb_position = function() {
 		var width = $( window ).width(),
 			H = $( window ).height() - ( ( 792 < width ) ? 60 : 20 ),
 			W = ( 792 < width ) ? 772 : width - 20;