angularJS and typescript controller

ctrl.js

/// <reference path='../_all.ts' />

module angularTs {
    'use strict';

    export interface IFirstScope extends ng.IScope {
        vm: FirstCtrl;
    }

    export class FirstCtrl {

      private member: number;
      private http: any;
      
      public injection(): any[] {
            return [
                '$scope',
                '$http',
                FirstCtrl
            ]
        }

        constructor($scope: IFirstScope, $http: IHttpService) { 
            $scope.vm = this;
            this.http = $http;
        }
    }

}