enhancements/lists.js

@@ -1,4 +1,28 @@
 registerScript(node => {
     // run the scripts
+    if (isHtmlElement(node)) {
+        addListHorizontalSeparators(node)
+    }
+}, ".*");
 
-}, ".*");
+function addListHorizontalSeparators(node) {
+    const targetTagName = 'MD-LIST-ITEM'; // tagName is upper case
+
+    let updateFunc = item => {
+        // add border as horizontal seperator 
+        item.style.borderBottom = "1px solid rgba(155,155,155, 0.2)";
+    }
+
+    // are we target tag?
+    if (node.tagName === targetTagName) {
+        updateFunc(node);
+    } else {
+        // find items -> all 
+        let requestItems = node.querySelectorAll('md-list-item');
+
+        // update borders
+        requestItems.forEach(item => {
+            updateFunc(item);
+        });
+    }
+}