How to compose redux reducers with dependent state

Question

I am working on a React/Redux application that allows for \"widgets\" to be added to a page and manipulated in 2D space. It is a requirement that multiple widgets can be selecte

Answer 1

I am using this:

CommonReducer.js

export default function commonReducer(state = initialState.doesNotMatter, payload) {
   switch (payload.type) {
     case "JOINED_TYPE": {
       let newState = Object.assign({}, state);
       return newState;
     }
     default:
       return state;
  }
}

SomeOtherReducer.js

import commonReducer from './commonReducer';

export default function someReducer(state = initialState.somePart, payload) {
       switch (payload.type) {
         case "CUSTOM_TYPE": {
           let newState = Object.assign({}, state);
           return newState;
         }
         default:{
           return commonReducer(state, payload);
         }
      }
}