redux-immutable-combine-reducers

redux-immutable-combine-reducers

A Redux combineReducers that returns an Immutable Map

Install

npm install --save redux-immutable-combine-reducers

Purpose

To have a root that is also an Immutable Map. Redux's combineReducers works with Immutable, but the root is still a plain object. This utility will return an Immutable Map instead.

Usage

import combineReducers from 'redux-immutable-combine-reducers';
import {Map} from 'immutable';

function counter(state = 0, action = {}) {
  switch (action.type) {
    case 'INCREMENT':
      return state + 1;
    case 'DECREMENT':
      return state - 1;
    default:
      return state;
  }
}

function filter(state = '', action = {}) {
  switch (action.type) {
    case 'SET_FILTER':
      return action.filter;
    default:
      return state;
  }
}

const objReducer = combineReducer({counter, filter});
const objState = objReducer();
console.log(objState.get('counter'));
// => 0

const mapReducer = combineReducer(Map({counter, filter}));
const mapState = mapReducer();
console.log(mapState.get('counter'));
// => 0

API

combineReducers(reducers)

Returns a reducer function that always returns an Immutable.Map.

reducers

Type: object | Immutable.Map

An object or Immutable.Map with all keys or entries being functions.

LICENSE

MIT © Dustin Specker