lib/create-server.js
function StoreManager(options) {
  var stores = {};
  this.get = function (name) {
    if (!stores[name]) {
      stores[name] = options.store(name);
    }
    return stores[name];
  };
}
function StoreManager(options) {
  var stores = {};
  this.get = function (name) {
    if (!stores[name]) {
      stores[name] = options.store(name);
    }
    return stores[name];
  };
}
store manager