code: function raw(callSite) {
  	    var tpl = _toIobject(callSite.raw);
  	    var len = _toLength(tpl.length);
  	    var aLen = arguments.length;
  	    var res = [];
  	    var i = 0;
  	    while (len > i) {
  	      res.push(String(tpl[i++]));
  	      if (i < aLen) res.push(String(arguments[i]));
  	    }return res.join('');
  	  }
docs: 21.1.2.4 String.raw(callSite, ...substitutions)