repeatTimeLog.js

angular
  .module("")
  .directive("repeatTimeLog", repeatTimeLog);

/* @ngInject */ 
function repeatTimeLog($timeout, $log) {
  var start, end;

  return timeoutFunction;

  function timeoutFunction(scope, element, attrs) {
    if (scope.$first) $timeout(startFunction);
    if (scope.$last) $timeout(endFunction);
  }

  function startFunction(){
    start = new Date();
  }

  function endFunction(){
    end = new Date();
    $log.debug("## DOM rendering list took: " + (end - start) + " ms");
  }
}