Create extension.js

js/extension.js

@@ -0,0 +1,26 @@
+import { app } from "../../scripts/app.js";
+
+app.registerExtension({
+	name: "ComfyUI.NodeDefaults",
+	setup() {
+		const defaultWidgets = {};
+		const orig = LGraphCanvas.prototype.getNodeMenuOptions;
+        LGraphCanvas.prototype.getNodeMenuOptions = function(node) {						
+			const options = orig.call(this, node);
+			options.push(null, {				
+				content: "Restore default values",
+				callback: () => {
+					if (!defaultWidgets[node.type]) {
+						defaultWidgets[node.type] = LiteGraph.createNode(node.type, node.name, node.options).widgets;
+					}
+					defaultWidgets[node.type].forEach(defaultWidget => {
+						const widget = node.widgets.find(widget => widget.name === defaultWidget.name);
+						if (widget) widget.value = defaultWidget.value;									
+					});
+					node.setDirtyCanvas(true, false);
+				}				
+			});
+			return options;
+		};
+	}
+});