spikesagal · October 1, 2015 17:01 · Oct 1, 2015
diff --git a/run.js b/run.js
@@ -0,0 +1,23 @@
+'use strict';
+class Person {
+  constructor(arg = {
+    firstName: 'John',
+    lastName: 'Doe'
+  }) {
+    ({
+      firstName: this.firstName = '<FIRSTNAME_UNKNOWN>',
+      lastName: this.lastName = '<LASTNAME_UNKNOWN>'
+    } = arg);
+  }
+  printName() {
+    console.log(this.lastName, ',', this.firstName);
+  }
+}
+
+var person;
+person = new Person({
+  firstName: 'Alex'
+})
+person.printName();
+person = new Person;
+person.printName();