text: /**
   * poly common functions
   *
   * (c) copyright 2011-2013 Brian Cavalier and John Hann
   *
   * This module is part of the cujo.js family of libraries (http://cujojs.com/).
   *
   * Licensed under the MIT License at:
   * 		http://www.opensource.org/licenses/mit-license.php
   *
   */
  define(function (require, exports, module) {
  
  	var toString;
  
  	toString = ({}).toString;
  
  	exports.isFunction = function (o) {
  		return typeof o == 'function';
  	};
  
  	exports.isString = function (o) {
  		return toString.call(o) == '[object String]';
  	};
  
  	exports.toString = function (o) {
  		return toString.apply(o);
  	};
  
  	exports.createCaster = function (caster, name) {
  		return function cast (o) {
  			if (o == null) throw new TypeError(name + ' method called on null or undefined');
  			return caster(o);
  		}
  	}
  
  });
  