How to represent Guid in typescript? : <p>let's say I have this C# class</p>

<pre><code>public class Product
{
   public Guid Id { get; set; }
   public string ProductName { get; set; }
   public Decimal Price { get; set; }
   public int Level { get; set; }
}
</code></pre>

<p>The equivalent typescript would be something like:</p>

<pre><code>export class Product {
  id: ???;
  productName: string;
  price: number;
  level: number;
}
</code></pre>

<p>How to represent Guid in typescript? </p>
