How to execute code in the context of an anonymous function?

Question

JavaScript

Good afternoon!
The js file is connected to the page, containing the following code:

(function(a) {
 function first(b) { 
 }
 funciton second(c) {
 a.onkeydown = function(d) { first(2); }
 }
})(window);

How can a script access the contents of an anonymous function? /*For example, execute first(4);*/ Thank you.

Answer 1

window['first'] = function(){};