Ported removeChild util.

assets/common.js/html.js

@@ -43,6 +43,24 @@ const $appendChildren = function(element, ...children) {
         $appendChild(element, child);
 };
 
+const $removeChild = function(element, child) {
+    switch(typeof child) {
+        case 'function':
+            $removeChild(element, child());
+            break;
+
+        case 'object':
+            if(child === null)
+                break;
+
+            if(child instanceof Node)
+                element.removeChild(child);
+            else if(child?.element instanceof Node)
+                element.removeChild(child.element);
+            break;
+    }
+};
+
 const $removeChildren = function(element) {
     while(element.lastChild)
         element.removeChild(element.lastChild);