A Redux reducer to manage a to-do list

todo-reducer.js

// This will be fed into the reducer when the app loads to initialize the state
const getInitialState = () => ({
  todoList: [], 
});

const reducer = (prevState = getInitialState(), action) => {
  switch (action.type) {
    case 'ADD_TODO':
      const nextState = {
        todoList: [
          ...prevState.todoList,
          action.text,
        ],
      };

      return nextState;
    default:
      return prevState;
};
  
// console.log(store.getState()) => { todoList: [] }
//
// store.dispatch({
//   type: 'ADD_TODO',
//   text: 'Get milk from the store',
// });
//
// console.log(store.getState()) => { todoList: ['Get milk from the store'] }