Adds valueOf method to Command

Author: unematiii

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@highmobility/auto-api-javascript",
-  "version": "0.0.4",
+  "version": "0.0.5",
   "description": "Auto API for JavaScript - the parsing library for the Auto API vehicle data model",
   "main": "lib/index.js",
   "module": "es/index.js",

package.json

@@ -69,10 +69,14 @@ export class Command {
   }
 
   public toJSON() {
+    return this.valueOf();
+  }
+
+  public valueOf() {
     const { capability, name } = this;
     return {
       [name]: {
-        [capability.name]: capability,
+        [capability.name]: capability.valueOf(),
       },
     };
   }