Svelte: <App> was created without expected data property 'event' warning in dev mode

[Kiho]

REPL
event should be white listed in svelte but above REPL generate code block

function App(options) {
    this._debugName = '<App>';
    if (!options || (!options.target && !options._root)) throw new Error("'target' is a required option");
    init(this, options);
    this._state = assign({}, options.data);
    if (!('cats' in this._state)) console.warn("<App> was created without expected data property 'cats'");
    if (!('event' in this._state)) console.warn("<App> was created without expected data property 'event'");
.....
}

and then show warning in browser console when running in dev mode .
<App> was created without expected data property 'event'

[Rich-Harris]

thanks, fixed in 1.46.1