How does prototype extend on typescript?

Question

i extended function prototype but typescript doesn\'t recognize it.

Function.prototype.proc = function() {
  var args, target, v;
  var __slice = [].slice;
          


        

Answer 1

There is a Function interface in the standard typescript lib which declares the members of Function objects. You will need to declare proc as a member of that interface with your own add on like the following:

interface Function {
    proc(...args: any[]): any;
}

This interface will need to be referenced from anywhere you intend to use 'proc'.