JSFiddle - React, Tailwind, and code Playground

HTML

<div ng-app ng-controller="ParentCtrl as pc">
        <div ng-controller="ChildCtrl as cc">
            <pre>{{cc.parentCities | json}}</pre>
            <pre>{{cc.parentCitiesByScope | json }}</pre>
            <pre>{{pc.cities | json}}</pre>
        </div>
    </div>

JavaScript

function ParentCtrl() {
    var vm = this;
    vm.cities = ["NY", "Amsterdam", "Barcelona"];
}
    
function ChildCtrl($scope) {
    var vm = this;
    ParentCtrl.apply(vm, arguments);
    
    vm.parentCitiesByScope = $scope.pc.cities;
    vm.parentCities = vm.cities;
}