examples/todos/src/reducers/todos.js
const todos = (state = [], action) => {
switch (action.type) {
case 'ADD_TODO':
return [
...state,
{
id: action.id,
text: action.text,
completed: false
}
]
case 'TOGGLE_TODO':
return state.map(todo =>
todo.id === action.id ? { ...todo, completed: !todo.completed } : todo
)
default:
return state
}
}
export default todos