index.js

var executeAction = function(action, callback) {
  var i = 0
  var doAction = function(action) {
    //no more repeats to execute
    if(action.repeat > i++) {
      action.run(function() {
        doAction(action)
      })
    } else {
      callback();
    }
  }
  doAction(action)
}

module.exports = {
  bench: function(config) {
    return function(callback) {
      var i = 0;
      var doAction = function(action) {
        if(action) {
          action.repeat = config.repeat;
          executeAction(action, function() {
            doAction(config.actions[i++])
          })
        } else {
          callback();
        }
      }
      doAction(config.actions[i++]);
    }
  }
}