include imports/exports in bundle object

src/rollup.js

@@ -1,5 +1,6 @@
 import { basename } from './utils/path';
 import { writeFile } from 'sander';
+import { keys } from './utils/object';
 import Bundle from './Bundle';
 
 let SOURCEMAPPING_URL = 'sourceMa';
@@ -14,6 +15,9 @@ export function rollup ( options ) {
 
 	return bundle.build().then( () => {
 		return {
+			imports: bundle.externalModules.map( module => module.id ),
+			exports: keys( bundle.entryModule.exports ),
+
 			generate: options => bundle.generate( options ),
 			write: options => {
 				if ( !options || !options.dest ) {