Getting line number of first anonymous eval in stack in chrome

gistfile1.txt

Error.prepareStackTrace = function(error, structuredStackTrace) {
   return structuredStackTrace;
};

var getNumberFromChromeTrace = function(stack) {
   // find first eval
   var evalSite = null;
   for (var i = 0; i < stack.length; i++) {
     if (stack[i].isEval()) {
       evalSite = stack[i];
       break;
     }
   }
   if (evalSite) {
     return evalSite.getLineNumber();
   }
};

var error = new Error();
console.log(getNumberFromChromeTrace(error.stack));