code: function(module, exports) {
  
  	module.exports = function (obj, sub) {
  	  if (sub) sub = sub.split('.')
  
  	  if (obj === null || obj === undefined) return false
  
  	  if (!sub) return true
  
  	  var current = obj
  	  var prop
  	  for (var i = 0; i < sub.length; i++) {
  	    prop = sub[i]
  	    if (current[prop] === null || current[prop] === undefined) return false
  	    current = current[prop]
  	  }
  
  	  return true
  	}
  
  
  /***/ }
docs: /* 19