Put getters together with action types

[Romms]

If I have two action types with different payload structure I have to describe the types and functions for selecting the data from these action in different places

const todos = map({
  addActionTypes: ['ADD_TODO', 'ADD_NOTE_WITH_TODO'],
  keyGetter: action => {
    if (action.type === 'ADD_NOTE_WITH_TODO') {
      return action.payload.note.todo.id;
    }

    if (action.type === 'ADD_TODO') {
      return action.payload.id;
    }
  },
  itemGetter: action => {
    if (action.type === 'ADD_NOTE_WITH_TODO') {
      return action.payload.note.todo;
    }

    if (action.type === 'ADD_TODO') {
      return action.payload;
    }
  },
});

That looks pretty bad because we divide describing action type and related logic.

What about describing all related getter methods together with these types?

const todos = map({
  addActionTypes: [
    { 
      type: 'ADD_TODO' 
    },
    {
      type: 'ADD_NOTE_WITH_TODO',
      keyGetter: action => action.payload.note.todo.id,
      itemGetter: action => action.payload.note.todo,
    },
  ],
});