NativeScript/tests/app/pages/page19.ts

import * as observable from "@nativescript/core/data/observable";
import { Trace } from "@nativescript/core";
Trace.addCategories(Trace.categories.Layout);
Trace.enable();

export function onLoaded(args: observable.EventData) {
    (<any>args.object).bindingContext = [0, 1];
}