Exclude JS source code from the output

_javascript/commons/sidebar.js

@@ -0,0 +1,30 @@
+/**
+ * Expand or close the sidebar in mobile screens.
+ */
+
+$(function() {
+
+  const sidebarUtil = (function () {
+    const ATTR_DISPLAY = "sidebar-display";
+    let isExpanded = false;
+    const body = $("body");
+
+    return {
+      toggle() {
+        if (isExpanded === false) {
+          body.attr(ATTR_DISPLAY, "");
+        } else {
+          body.removeAttr(ATTR_DISPLAY);
+        }
+
+        isExpanded = !isExpanded;
+      }
+    };
+
+  }());
+
+  $("#sidebar-trigger").click(sidebarUtil.toggle);
+
+  $("#mask").click(sidebarUtil.toggle);
+
+});