Typescript Singleton

class Singleton{
  private static instance: Singleton; //Propiedad de la clase
  public random:number; // Propiedad del objeto

  private constructor(){
    this.random = Math.random();
  }

  public static getInstance():Singleton{
    if(!this.instance){
      this.instance = new Singleton();
    }
    return this.instance;
  }
}