RootState should be a complete copy not a reference.

[rauan100]

Version

3.6.2

Reproduction link

https://codesandbox.io/s/dank-https-tqtvo?file=/src/store/index.js

Steps to reproduce

Change input value

What is expected?

It is expected that the profile state value does not change

What is actually happening?

the profile state is change

---

The rootState parameter passed to an action, should be a complete copy of the state, not a reference. This allows me to change the state of another module without using an action or a commit for that module.

[sagadav]

rootState shouldn't be a copy. You are incorrectly assigning payload in the mutation

SET_PERSON(state, profile) {
      state.person = { ...profile };
}

https://vuex.vuejs.org/guide/mutations.html#mutations-follow-vue-s-reactivity-rules

[cuebit]

As @sagadav quite rightly mentioned, rootState should be a reference. Actions are asynchronous, state can change at any point between an actions invocation and resolution.