run npm install to generate a package lock

node_modules/@weborigami/async-tree/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "@weborigami/async-tree",
+  "version": "0.2.1",
+  "description": "Asynchronous tree drivers based on standard JavaScript classes",
+  "type": "module",
+  "main": "./main.js",
+  "browser": "./browser.js",
+  "types": "./index.ts",
+  "devDependencies": {
+    "@types/node": "22.7.4",
+    "typescript": "5.6.2"
+  },
+  "dependencies": {
+    "@weborigami/types": "0.2.1"
+  },
+  "scripts": {
+    "test": "node --test --test-reporter=spec",
+    "typecheck": "tsc"
+  }
+}