How to write proxy function over funciton?

There is a class with some several methods. One of them:

drawGeojson(layerid: string, geojsonObject) {
     this.ngZone.run(() => {}
}

How to refactor the code – so that, on request, you can execute the method body with a wrapper

 this.ngZone.run(() => {}

and without it?

I need something this:

The default call: drawGeojson()
The proxy call Wrapper.drawGeojson();

>Solution :

If you want conditionally execute

this.ngZone.run(() => {})

You can add an additional parameter to your method and depend on whether it execute or not.

wrapperZone(method: Function, execute: boolean) {
   execute ? this.ngZone.run(() => {
       method()
   }) : method()
}

wrapperZone(this.drawGeojson.bind(this), true)