JSFiddle - React, Tailwind, and code Playground

JavaScript

Ext.onReady(function () {
    var data = {
        "config": {
            "name": "blah",
                "id": 1,
                "someconfig": [{
                "name": "Services",
                "tabs": [{
                    "id": 0,
                    "name": "Details",
                    "layout": "hbox"
                }, {
                    "id": 1,
                    "name": "Sources",
                    "layout": "hbox"
                }, {
                    "id": 2,
                    "name": "Paths",
                    "layout": "hbox"
                }, {
                    "id": 3,
                    "name": "Ports",
                    "layout": "hbox"
                }, {
                    "id": 4,
                    "name": "Levels",
                    "layout": "hbox"
                }, {
                    "id": 5,
                    "name": "Notes",
                    "layout": "hbox"
                }]
            }, {
                "name": "Services2",
                "tabs": [{}]
            }]
        }
    };

    Ext.define('Config', {
        extend: 'Ext.data.Model',
        fields: ['name'],
        hasMany: [{
            name: 'someconfig',
            model: 'Someconfig',
            associationKey: 'someconfig'
        }],
        proxy: {
            type: 'memory',
            data: data,
            reader: {
                type: 'json',
                root: 'config'
            }
        }
    });

    Ext.define('Someconfig', {
        extend: 'Ext.data.Model',
        fields: [
            'name'],
        hasMany: [{
            name: 'tabs',
            model: 'Tabs',
            associationKey: 'tabs'
        }]
    });

    Ext.define('Tabs', {
        extend: 'Ext.data.Model',
        fields: [
            'id',
            'name',
            'layout'],
        belongsTo: [{
            name: 'tabs',
            model: 'Someconfig',
            associationKey: 'tabs'
        }]
    });

   ...