app.json

{
    "schemaVersion": "1.0",
    "items": [
        {
            "$type": "library-viewer-model",
            "id": "library-viewer-1",
            "libraries": [
                {
                    "id": "arcgis-widget",
                    "title": "ArcGIS Widget"
                },
                {
                    "id": "basic-component",
                    "title": "Basic Component"
                },
                {
                    "id": "basic-service",
                    "title": "Basic Service"
                },
                {
                    "id": "commands-and-operations",
                    "title": "Commands and Operations"
                },
                {
                    "id": "tap-into-web-event",
                    "title": "Tap into a Web event"
                },
                {
                    "id": "embedded-map",
                    "title": "Embedded Map"
                },
                {
                    "id": "i18n",
                    "title": "Internationalization"
                },
                {
                    "id": "iframe",
                    "title": "Iframe Embedded",
                    "useHostPage": true
                },
                {
                    "id": "third-party-lib",
                    "title": "3rd-party Library"
                },
                {
                    "id": "ui-library",
                    "title": "UI Library"
                },
                {
                    "id": "icons-pack",
                    "title": "Icons Pack"
                }
            ]
        },
        {
            "$type": "layout",
            "id": "default",
            "title": "Default",
            "url": "./layout.xml"
        }
    ]
}