best way to import external javascript with typescript

Question

Currently I have 2 different ways in case I want to load in external code into my typescript file.

If i refer to another typescript file I have to write:

Answer 1

Just declare it as an external module

/// <reference path="./types/angular/angular.d.ts" />
declare module 'angular'{
    var angular:ng.IAngularStatic;
    export = angular;
}

// now you can do: 
import angular = require('angular');