redux-devtools/packages/redux-slider-monitor/examples/todomvc/reducers/todos.js
Jhen-Jie Hong 476e37a875 Add redux-slider-monitor (#434)
* Add redux-slider-monitor

* Fix example configuration of redux-slider-monitor

* Fix lint errors

* CI: Run build:all before lint
2018-12-22 16:20:04 +02:00

51 lines
1.1 KiB
JavaScript
Executable File

import { ADD_TODO, DELETE_TODO, EDIT_TODO, MARK_TODO, MARK_ALL, CLEAR_MARKED } from '../constants/ActionTypes';
const initialState = [{
text: 'Use Redux',
marked: false,
id: 0
}];
export default function todos(state = initialState, action) {
switch (action.type) {
case ADD_TODO:
return [{
id: (state.length === 0) ? 0 : state[0].id + 1,
marked: false,
text: action.text
}, ...state];
case DELETE_TODO:
return state.filter(todo =>
todo.id !== action.id
);
case EDIT_TODO:
return state.map(todo => (
todo.id === action.id ?
{ ...todo, text: action.text } :
todo
));
case MARK_TODO:
return state.map(todo => (
todo.id === action.id ?
{ ...todo, marked: !todo.marked } :
todo
));
case MARK_ALL: {
const areAllMarked = state.every(todo => todo.marked);
return state.map(todo => ({
...todo,
marked: !areAllMarked
}));
}
case CLEAR_MARKED:
return state.filter(todo => todo.marked === false);
default:
return state;
}
}