demo/build/server/common/actions/route.js
function updateLocation(method) {
  return function () {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return {
      type: _constants.CALL_HISTORY_METHOD,
      payload: { method: method, args: args }
    };
  };
}
function updateLocation(method) {
  return function () {
    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return {
      type: _constants.CALL_HISTORY_METHOD,
      payload: { method: method, args: args }
    };
  };
}
This action type will be dispatched by the history actions below.
If you're writing a middleware to watch for navigation events, be sure to
look for actions of this type.