title: TypeScript extended Class first argument not set/display
body: <p>I just getting started with TS and play now with classes.
  I have this fairly simple example, but do not see, why when I console.log the properties of new Car &quot;merced&quot; I can see the string color, but not the number of wheels.</p>
  <pre><code>class Vehicle {
    constructor(public color: string) {}
  
    honk(): void {
      console.log('Meep')
    }
  }
  class Car extends Vehicle {
    constructor(public wheels: number, color: string) {
      super(color);
    }
  }
  
  const merced = new Car(2, 'red');
  console.log(merced.color)
  console.log(merced.wheels)
  </code></pre>