fix for bundle-loader when using ESM

src/builtins/bundle-loader.js

@@ -77,10 +77,6 @@ function loadCSSBundle(bundle) {
 
 function requireModule(id) {
   let res = require(id);
-  if (res.__esModule) {
-    return res.default;
-  }
-
   return res;
 }
 

test/integration/dynamic-esm/index.js

@@ -0,0 +1,7 @@
+var local = import('./local');
+
+export default function () {
+  return local.then(function (l) {
+    return l.a + l.b;
+  });
+};

test/integration/dynamic-esm/local.js

@@ -0,0 +1,2 @@
+export const a = 1;
+export const b = 2;

test/javascript.js

@@ -55,6 +55,23 @@ describe('javascript', function () {
     assert.equal(await output(), 3);
   });
 
+  it('should return all exports as an object when using ES modules', async function () {
+    let b = await bundle(__dirname + '/integration/dynamic-esm/index.js');
+
+    assertBundleTree(b, {
+      name: 'index.js',
+      assets: ['index.js', 'bundle-loader.js', 'bundle-url.js'],
+      childBundles: [{
+        assets: ['local.js'],
+        childBundles: []
+      }]
+    });
+
+    let output = run(b).default;
+    assert.equal(typeof output, 'function');
+    assert.equal(await output(), 3);
+  });
+
   it('should hoist common dependencies into a parent bundle', async function () {
     let b = await bundle(__dirname + '/integration/dynamic-hoist/index.js');