module.exports = {
  cors: require('./cors'),
  fetch: require('./fetch'),
  cancellablePromiseBuilder: require('./cancellable-promise-builder')
};

module.exports = {
  cors: require('./cors'),
  fetch: require('./fetch'),
  cancellablePromiseBuilder: require('./cancellable-promise-builder'),
  builtInStore: require('./built-in-store')
};

Update index.