How to partially change the state of redux?

Question

React

Hi everyone, this is the current situation.

{
  ... ,
  user : { ... } ,
  ...
}

I send the name and new value of the property from the server,
and in the redux state, only one property of the user object needs to be changed,
how to do

function reducer(state, action){
  switch (action.type){
    ...

    case 'CHANGE_USER_DATA':{
      return {

        ...state,
        user : {
          ...state.user,
          action.prop : action.value
        }

      }
    }

    ...
  }
}

this is not how Unexpected token, expected "," works

Answer 1

return {
  ...state,
  user : {
    ...state.user,
    [action.prop] : action.value
  }
}