systemjs: type definitions for System universal dynamic module loader

https://github.com/systemjs/systemjs/issues/321

systemjs/systemjs-tests.ts

@@ -0,0 +1,12 @@
+/// <reference path="systemjs.d.ts" />
+
+import System = require('systemjs');
+
+System.config({
+  baseURL: '/',
+  paths: {'*': '*.js?v=0.18.4'}
+});
+
+System.import('app')
+  .catch(e => console.error(e,
+    'There was an error loading.'));

systemjs/systemjs.d.ts

@@ -0,0 +1,21 @@
+// Type definitions for System.js 0.18.4
+// Project: https://github.com/systemjs/systemjs
+// Definitions by: Ludovic HENIN <https://github.com/ludohenin/>, Nathan Walker <https://github.com/NathanWalker/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+interface System {
+  import(name: string): any;
+  defined: any;
+  amdDefine: () => void;
+  amdRequire: () => void;
+  baseURL: string;
+  paths: { [key: string]: string };
+  meta: { [key: string]: Object };
+  config: any;
+}
+
+declare var System: System;
+
+declare module "systemjs" {
+  export = System;
+}