NativeScript/apps/app/ui-tests-app/layouts/dock.ts

import * as pageModule from "tns-core-modules/ui/page";
import * as model from "./myview";

export function onLoaded(args: { eventName: string, object: any }) {
    var page = <pageModule.Page>args.object;
    page.bindingContext = new model.ViewModel();
}

export function onStretchLastChild(args: { eventName: string, object: any }) {
    var layout = args.object.parent;
    if (layout.stretchLastChild === true) {
        layout.stretchLastChild = false;
    } else {
        layout.stretchLastChild = true;
    }
}