redux reducer

1const Reducer = (state=[],action) =>{
2	switch(action.type){
3      case'add':
4        return [...state,action.payload]
5      default:
6        return state ;
7    }
8}
9

1const reduxSinaxe = (state = [], action) => {
2  switch (action.type) {
3    case "@smthg/ACTION":
4      const { anyConst } = action;
5      return [...state, anyConst];
6
7    default:
8      return state;
9  }
10};
11
12export default reduxSinaxe;

1import { combineReducers } from 'redux';
2
3const INITIAL_STATE = {
4  current: [],
5  possible: [
6    'Alice',
7    'Bob',
8    'Sammy',
9  ],
10};
11
12const friendsReducer = (state = INITIAL_STATE, action) => {
13  switch (action.type) {
14    default:
15      return state
16  }
17};
18
19export default combineReducers({
20  friends: friendsReducer
21});