Feature request: subscribeAction()

VueX has an option to subscribeAction. I think it would be even more relevant here. Pinia currently has subscribe() but it’s just a simple wrapper over watch() and it often might not be precise enough.

Subscribing to actions would be more explicit.

https://vuex.vuejs.org/api/#subscribeaction

store.subscribeAction((action, state) => {
  console.log(action.type)
  console.log(action.payload)
})

Usecase:

In many places in the code you might want to react to userStore.state.isLoggedIn. Current store.subscribe() may fire multiple times, you’d need to check for truthy value of loggedIn, check if it’s different from previous value and so on.

[posva]

The API has been documneted

[gjuchault]

@posva Use case: making plugins like persistance, logging, etc.