Pass action to subscribe() listeners

[rstacruz]

It'd be nice to be able to learn what actions trigger a subscribe() event:

store.subscribe(action => {
  if (action.type === '...') {
    /* do something */
  }
})

This way you can create listener services that wait for a certain action to do something. Example use case is to send Google Analytics data when ROUTE_CHANGE occurs (assuming your router sends this out).

[markerikson]

This has been suggested several times, and turned down. Use middleware to respond to actions (such as redux-saga).

See #1057 , #1243 , #347 , #1300 , and #580.