Transform String on Clipboard to Title Case using JavaScript for Automation (JXA)

Transform String on Clipboard to Title Case JXA.js

/*
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	[STRINGS] Transform String on Clipboard to Title Case [JXA]
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DATE:    Wed, Feb 10, 2016
AUTHOR:  JMichaelTX (in most forums)
           Find any bugs/issues or have suggestions for improvement?
           Contact me via PM or at blog.jmichaeltx.com/contact/
REF:  https://github.com/gouch/to-title-case/blob/master/to-title-case.js    
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*/
var app = Application.currentApplication();
app.includeStandardAdditions = true;


//~~~~~ PROTOTYPE DEFINITOINS ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

// REF:   https://github.com/gouch/to-title-case/blob/master/to-title-case.js

String.prototype.toTitleCase = function(){
  var smallWords = /^(a|an|and|as|at|but|by|en|for|if|in|nor|of|on|or|per|the|to|vs?\.?|via)$/i;

  return this.replace(/[A-Za-z0-9\u00C0-\u00FF]+[^\s-]*/g, function(match, index, title){
    if (index > 0 && index + match.length !== title.length &&
      match.search(smallWords) > -1 && title.charAt(index - 2) !== ":" &&
      (title.charAt(index + match.length) !== '-' || title.charAt(index - 1) === '-') &&
      title.charAt(index - 1).search(/[^\s-]/) < 0) {
      return match.toLowerCase();
    }

    if (match.substr(1).search(/[A-Z]|\../) > -1) {
      return match;
    }

    return match.charAt(0).toUpperCase() + match.substr(1);
  });
};
//~~~~~~~~~~~~~~~~ END OF PROTOTYPE DEFINITIONS ~~~~~~~~~~~~~~~~~~~~~~


//--- NOTE THAT USE OF THE PROTOTYPE toTitleCase() MUST BE AFTER ABOVE DEFINITION ---

var titleCaseStr = app.theClipboard().toTitleCase()
app.setTheClipboardTo(titleCaseStr)

titleCaseStr		// Only needed if you want the script to return results to KM