Get the direct implementation of stringIDToTypeID

I have found the implementation for charIDToTypeID as follows,

var charIDToTypeID = function(s) {
   var val = 0;
   val += s.charCodeAt(0) * 256 * 256 * 256;
   val += s.charCodeAt(1) * 256 * 256;
   val += s.charCodeAt(2) * 256;
   val += s.charCodeAt(3);
   return val;
};

When I send charIDToTypeID('Mk  '), it return correct id of current event.

Same way I want to get function definition for stringIDToTypeID. When I send stringIDToTypeID("makeTimeline"), to return correct ID of current.

Is there any direct implementation to get it?

I used Photoshop CC 2014, 2015 and 2017.