Adding built in extensions + example

web/extensions/logging.js.example

@@ -0,0 +1,54 @@
+import { app } from "../scripts/app.js";
+
+const ext = {
+	name: "Example.LoggingExtension",
+	async init(app) {
+		// Any initial setup to run as soon as the page loads
+		console.log("[logging]", "extension init");
+	},
+	async setup(app) {
+		// Any setup to run after the app is created
+		console.log("[logging]", "extension setup");
+	},
+	async addCustomNodeDefs(defs, app) {
+		// Add custom node definitions
+		// These definitions will be configured and registered automatically
+		// defs is a lookup core nodes, add yours into this
+		console.log("[logging]", "add custom node definitions", "current nodes:", Object.keys(defs));
+	},
+	async getCustomWidgets(app) {
+		// Return custom widget types
+		// See ComfyWidgets for widget examples
+		console.log("[logging]", "provide custom widgets");
+	},
+	async beforeRegisterNodeDef(nodeType, nodeData, app) {
+		// Run custom logic before a node definition is registered with the graph
+		console.log("[logging]", "before register node: ", nodeType, nodeData);
+
+		// This fires for every node definition so only log once
+		delete ext.beforeRegisterNodeDef;
+	},
+	async registerCustomNodes(app) {
+		// Register any custom node implementations here allowing for more flexability than a custom node def
+		console.log("[logging]", "register custom nodes");
+	},
+	loadedGraphNode(node, app) {
+		// Fires for each node when loading/dragging/etc a workflow json or png
+		// If you break something in the backend and want to patch workflows in the frontend
+		// This is the place to do this
+		console.log("[logging]", "loaded graph node: ", node);
+
+		// This fires for every node on each load so only log once
+		delete ext.loadedGraphNode;
+	},
+	nodeCreated(node, app) {
+		// Fires every time a node is constructed
+		// You can modify widgets/add handlers/etc here
+		console.log("[logging]", "node created: ", node);
+
+		// This fires for every node so only log once
+		delete ext.nodeCreated;
+	}
+};
+
+app.registerExtension(ext);