Typescript replacement for $translate.instant()

checkedtranslate.ts

class CheckedTranslate {
    static $inject = ['$rootScope', '$translate']
    constructor(private $rootScope: ng.IRootScopeService, private $translate: ng.translate.ITranslateService) {}
    translate(localizations: any) {
        // obviously this mutates passed localizations object behind your back
        this.$rootScope.$on('$translateChangeSuccess', () => {
            for (var key in localizations) {
                localizations[key] = this.$translate.instant(localizations[key]);
            }
        })
        return localizations;
    }
}
angular.module('app').service('CheckedTranslate', CheckedTranslate);


// app code

// declare your localizations with convenient key
const locs = {
    imagesLabel: "Views.DocumentsPage.Images_Label"
}

// in controller ctor:
//         this.locs = CheckedTranslate.translate(locs);

// somewhere in controller (with existence check!):

// var s = locs.imagesLabel

// in template:
// <span ng-bind="$ctrl.locs.imagesLabel"></span>