temperature-service.ts

namespace app.services {
    export class TemperatureService {
        public static $inject: Array<string> = ["$q", "$timeout"];
        private currentTemperature: number = 20;
        
        constructor(private $q: ng.IQService, private $timeout: ng.ITimeoutService) {}
        
        public getTemperature(): ng.IPromise<number> {
            const deferred: ng.IDeferred<number> = this.$q.defer();
            this.$timeout((): void => {
                deferred.resolve(this.currentTemperature);
                });
            return deferred.promise;
        } 
    } 
    
    angular.module("app").service("temperatureService", TemperatureService);
}