After you have setup Atatus, you need to override AngularJS exception handler by using the below snippet in your front-end.

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angular.module('YOUR_APP').factory('$exceptionHandler', ['$window', function ($window) {
  return function (exception, cause) {
    if ($window.atatus) {
      $window.atatus.notify(exception);
    }
  };
}]);

You can refer to AngularJS documentation.