add more .js extensions

src/Bundle.js

@@ -1,4 +1,4 @@
-import Promise from 'es6-promise/lib/es6-promise/promise';
+import Promise from 'es6-promise/lib/es6-promise/promise.js';
 import MagicString from 'magic-string';
 import first from './utils/first.js';
 import { blank, keys } from './utils/object.js';

src/Module.js

@@ -1,4 +1,4 @@
-import { parse } from 'acorn/src/index';
+import { parse } from 'acorn/src/index.js';
 import MagicString from 'magic-string';
 import { walk } from 'estree-walker';
 import Statement from './Statement.js';

src/ast/Scope.js

@@ -1,4 +1,4 @@
-import { blank, keys } from '../utils/object';
+import { blank, keys } from '../utils/object.js';
 
 const extractors = {
 	Identifier ( names, param ) {

src/finalisers/amd.js

@@ -1,4 +1,4 @@
-import { getName, quoteId } from '../utils/map-helpers';
+import { getName, quoteId } from '../utils/map-helpers.js';
 import getInteropBlock from './shared/getInteropBlock.js';
 import getExportBlock from './shared/getExportBlock.js';
 

src/finalisers/es6.js

@@ -1,4 +1,4 @@
-import { keys } from '../utils/object';
+import { keys } from '../utils/object.js';
 
 function notDefault ( name ) {
 	return name !== 'default';

src/finalisers/iife.js

@@ -1,5 +1,5 @@
-import { blank } from '../utils/object';
-import { getName } from '../utils/map-helpers';
+import { blank } from '../utils/object.js';
+import { getName } from '../utils/map-helpers.js';
 import getInteropBlock from './shared/getInteropBlock.js';
 import getExportBlock from './shared/getExportBlock.js';
 

src/finalisers/umd.js

@@ -1,5 +1,5 @@
-import { blank } from '../utils/object';
-import { getName, quoteId, req } from '../utils/map-helpers';
+import { blank } from '../utils/object.js';
+import { getName, quoteId, req } from '../utils/map-helpers.js';
 import getInteropBlock from './shared/getInteropBlock.js';
 import getExportBlock from './shared/getExportBlock.js';
 

src/utils/first.js

@@ -1,4 +1,4 @@
-import Promise from 'es6-promise/lib/es6-promise/promise';
+import Promise from 'es6-promise/lib/es6-promise/promise.js';
 
 // Return the first non-falsy result from an array of
 // maybe-sync, maybe-promise-returning functions

src/utils/fs.js

@@ -1,4 +1,4 @@
-import Promise from 'es6-promise/lib/es6-promise/promise';
+import Promise from 'es6-promise/lib/es6-promise/promise.js';
 import * as fs from 'fs';
 import { dirname } from './path.js';