JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://cdn.sencha.io/ext-4.1.1-gpl/resources/css/ext-all.css">
<script src="http://cdn.sencha.io/ext-4.1.1-gpl/ext-all-debug.js"></script>

JavaScript

Ext.onReady(function() {


    var store = Ext.create('Ext.data.TreeStore', {
        root: {
            "expanded": true,
            "children": [
                {
                    "text": "To Do",
                    "cls": "folder",
                    "expanded": true,
                    "children": [
                        {
                            "text": "Go jogging",
                            "leaf": true,
                            "checked": true
                        },
                        {
                            "text": "Take a nap",
                            "leaf": true,
                            "checked": false
                        },
                        {
                            "text": "Climb Everest",
                            "leaf": true,
                            "checked": false
                        }
                    ]
                },
                {
                    "text": "Grocery List",
                    "cls": "folder",
                    "children": [
                        {
                            "text": "Bananas",
                            "leaf": true,
                            "checked": false
                        },
                        {
                            "text": "Milk",
                            "leaf": true,
                            "checked": false
                        },
                        {
                            "text": "Cereal",
                            "leaf": true,
                            "checked": false
                        },
                        {
                            "text": "Energy foods",
                            "cls": "folder",
                            "children": [
                                {
                                    "text": "Coffee",
                                    "leaf": true,
                                    "checked": false
                         ...