text: import {
    ADD_TODO,
    COMPLETE_TODO
  } from '../actions';
  
  function todos(state = [], action) {
    switch (action.type) {
      case ADD_TODO:
        return [
          ...state,
          {
            text: action.text,
            completed: false
          }
        ];
      case COMPLETE_TODO:
        return [
          ...state.slice(0, action.index),
          Object.assign({}, state[action.index], {
            completed: true
          }),
          ...state.slice(action.index + 1)
        ];
      default:
        return state
    }
  }
  
  export default todos;
  