compolicious/demo/components/redux-counter/reducers.js

React component demo utility

import {handleActions} from 'redux-actions';

import {
  REDUX_COUNTER_ADD,
  REDUX_COUNTER_SUBTRACT
} from './actions';

const initialState = {
  value: 42
};

export default handleActions({
  [REDUX_COUNTER_ADD]: (state = {}) => {
    const {value} = state;
    return {
      ...state,
      value: value + 1
    };
  },
  [REDUX_COUNTER_SUBTRACT]: (state = {}) => {
    const {value} = state;
    return {
      ...state,
      value: value - 1
    };
  }
}, initialState);