fix(core): update

ts/tools/exists.ts

@@ -0,0 +1,14 @@
+import * as plugins from '../smartobject.plugins';
+
+/**
+ * checks if an object has a parameter with a given key name, returns true if yes.
+ * @param parentObject
+ * @param childParam
+ * @returns {boolean}
+ */
+ export let exists = (parentObject: object, childParam: string): boolean => {
+  if (parentObject.hasOwnProperty(childParam)) {
+    return true;
+  }
+  return false;
+};