Installed pnpm and init a package.json. Furthermore set "runtime" and the necessary node version

package.json

@@ -0,0 +1,24 @@
+{
+  "name": "LUNA-Charts",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "devEngines": {
+    "runtime": {
+      "name": "node",
+      "version": ">=22.0.0"
+    },
+    "packageManager": {
+      "name": "pnpm",
+      "version": "^11.11.0",
+      "onFail": "download"
+    }
+  },
+  "type": "module"
+}