How to get the Class in constructor with typescript?

Question

I try to set, to empty string, every properties of my classes at instantiate time. But to get ALL the properties, I need to get the "Class" who is instantiate in the constructor. Any help would be much appreciate !

I work with typescript 3.1

• Any ideas how can I get the Class in the constructor ?
• Or how can I get a list of all the properties, including the none instantiates ones, only in using "this" and not the Class?

Here the function I'm using to get all properties of a Class.

      Export class Base {
        id: String;
        ...

         constructor() {
           getAllProperties(MyClass) 
             // I would like to have MyClass to be dynamique
         }

      }

       function getAllProps(cls: new (...args: any[]) => any): any[] {   
         // return a list of all Class properties.
       }

I also tried to use Reflect.metadata API but could not got any good results without the Class.

Answer 1

The parent constructor is called before the children constructor, therefore it won't work. You can create the function and call it after the super() function

// Parent
class A1 {
    constructor() {
    }

    protected init() {
        //Get properties here
        console.log(this);
    }
}

// Child
class A2 extends A1 {
    public a;
    public b;

    constructor() {
        super();

        this.a = 1;
        this.b = 2;
        //code here...

        this.init();
    }
}