Inspiered by React.

if (__DEV__) {
  measureLifeCyclePerf(
    () => store.getState(),
    'getState',
  );
} else {
  store.getState()
}

Instrumental:

• Store#getState
• Store#receivePayload
• Store#shouldStateUpdate
• StoreGroup#getState
• UseCase#execute

The motivation is that we want to find the bottleneck in the stores.
I think that almin need scalable store #175

Related

• https://facebook.github.io/react/docs/perf.html