using systemjs on node.js (& Angular 2)

Question

Say I have a foo.ts and app.ts as follows:

foo.ts:

 export interface Foo {
     id: number; 
     label: string;
 };

app.ts:

 import {Foo} from './foo'
 var myfoo: Foo = { "id": 1, "label": "One" };
 console.log(JSON.stringify(myfoo));

After compiling, executing 'node app.js' from the command line runs as expected if I use "module"="commonjs" in my tsconfig.json. Cutting to the chase, what I would like to do is is use my Foo interface client-side with Angular 2, and server-side with node. Inconveniently, the Angular 2 quickstart I am modeling on here wants "module"="system" in tsconfig.json. This configuration causes an error when trying to run 'node app.js':

System.register([], function(exports_1) {
^
ReferenceError: System is not defined`

I have tried following the instructions for using systemjs with node on github, but at this point I am just mashing keys and could use some help. How do I either (a) get my app.ts code running on the server-side using systemjs, or alternately, (b) get the Angular 2 quickstart running with commonjs?

Answer 1

I am going to wrap this up with an answer, even if the question hasn't been up-voted. The solution appears to be to use Gulp to compile the common typescript code (like interface Foo) differently for the client ("module"="system") and the server ("module"="commonjs"). If there is a way to compile the typescript code in the OP with "module"="system" I'd still like to know. But it appears to be kind of academic since everyone manages their project with Gulp or something similar anyway.