diff --git a/demos/bundlers.mjs b/demos/bundlers.mjs
index ff90414eb..650363a97 100644
--- a/demos/bundlers.mjs
+++ b/demos/bundlers.mjs
@@ -52,8 +52,8 @@ QUnit.test.each('test in Node.js [indirect]', indirectFiles, function (assert, f
     { cwd: DIR, env: { qunit_config_reporters_tap: 'true' }, encoding: 'utf8' }
   );
   const expected = `
-1..4
-# pass 4
+1..5
+# pass 5
 # skip 0
 # todo 0
 # fail 0`.trim();
@@ -76,25 +76,29 @@ Testing http://localhost:8000/tmp/test-import-default.umd.html .OK
 >> passed test "import-default"
 Testing http://localhost:8000/tmp/test-import-default.webpack.html .OK
 >> passed test "import-default"
-Testing http://localhost:8000/tmp/test-import-indirect.es.html ....OK
+Testing http://localhost:8000/tmp/test-import-indirect.es.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "import-indirect"
-Testing http://localhost:8000/tmp/test-import-indirect.iife.html ....OK
+Testing http://localhost:8000/tmp/test-import-indirect.iife.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "import-indirect"
-Testing http://localhost:8000/tmp/test-import-indirect.umd.html ....OK
+Testing http://localhost:8000/tmp/test-import-indirect.umd.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "import-indirect"
-Testing http://localhost:8000/tmp/test-import-indirect.webpack.html ....OK
+Testing http://localhost:8000/tmp/test-import-indirect.webpack.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "import-indirect"
 Testing http://localhost:8000/tmp/test-import-named.es.html .OK
 >> passed test "import-named"
@@ -112,27 +116,39 @@ Testing http://localhost:8000/tmp/test-require-default.umd.html .OK
 >> passed test "require-default"
 Testing http://localhost:8000/tmp/test-require-default.webpack.html .OK
 >> passed test "require-default"
-Testing http://localhost:8000/tmp/test-require-indirect.es.html ....OK
+Testing http://localhost:8000/tmp/test-require-indirect.es.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "require-indirect"
-Testing http://localhost:8000/tmp/test-require-indirect.iife.html ....OK
+Testing http://localhost:8000/tmp/test-require-indirect.iife.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "require-indirect"
-Testing http://localhost:8000/tmp/test-require-indirect.umd.html ....OK
+Testing http://localhost:8000/tmp/test-require-indirect.umd.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "require-indirect"
-Testing http://localhost:8000/tmp/test-require-indirect.webpack.html ....OK
+Testing http://localhost:8000/tmp/test-require-indirect.webpack.html .....OK
 >> passed test "import-default"
 >> passed test "import-named"
 >> passed test "require-default"
+>> passed test "require-sub"
 >> passed test "require-indirect"
->> 44 tests completed in 42ms, with 0 failed, 0 skipped, and 0 todo.
+Testing http://localhost:8000/tmp/test-require-sub.es.html .OK
+>> passed test "require-sub"
+Testing http://localhost:8000/tmp/test-require-sub.iife.html .OK
+>> passed test "require-sub"
+Testing http://localhost:8000/tmp/test-require-sub.umd.html .OK
+>> passed test "require-sub"
+Testing http://localhost:8000/tmp/test-require-sub.webpack.html .OK
+>> passed test "require-sub"
+>> 56 tests completed in 42ms, with 0 failed, 0 skipped, and 0 todo.
 
 Done.`;
 
diff --git a/demos/bundlers/build.mjs b/demos/bundlers/build.mjs
index 17c7d66a4..d87e2469c 100644
--- a/demos/bundlers/build.mjs
+++ b/demos/bundlers/build.mjs
@@ -15,6 +15,7 @@ const inputs = [
   `${dirname}/test/import-named.js`,
   `${dirname}/test/import-indirect.js`,
   `${dirname}/test/require-default.cjs`,
+  `${dirname}/test/require-sub.cjs`,
   `${dirname}/test/require-indirect.cjs`
 ];
 
diff --git a/demos/bundlers/test/import-indirect.js b/demos/bundlers/test/import-indirect.js
index 7800fd83f..f5ad7175c 100644
--- a/demos/bundlers/test/import-indirect.js
+++ b/demos/bundlers/test/import-indirect.js
@@ -2,6 +2,7 @@
 import './import-default.js';
 import './import-named.js';
 import './require-default.cjs';
+import './require-sub.cjs';
 
 import QUnit from 'qunit';
 
@@ -17,4 +18,8 @@ QUnit.test('import-indirect', function (assert) {
   assert.strictEqual(TEST_OBJECTS.require_default, QUnit, 'identity');
   assert.strictEqual(QUnit.hello_require_default, 'require-default', 'extend QUnit');
   assert.strictEqual(assert.hello_require_default, 'require-default', 'extend assert');
+
+  assert.strictEqual(TEST_OBJECTS.require_sub, QUnit, 'identity');
+  assert.strictEqual(QUnit.hello_require_sub, 'require-sub', 'extend QUnit');
+  assert.strictEqual(assert.hello_require_sub, 'require-sub', 'extend assert');
 });
diff --git a/demos/bundlers/test/require-indirect.cjs b/demos/bundlers/test/require-indirect.cjs
index a6bcbbda1..c0c202ff0 100644
--- a/demos/bundlers/test/require-indirect.cjs
+++ b/demos/bundlers/test/require-indirect.cjs
@@ -4,6 +4,7 @@ const QUnit = require('qunit');
 require('./import-default.js');
 require('./import-named.js');
 require('./require-default.cjs');
+require('./require-sub.cjs');
 
 QUnit.test('require-indirect', function (assert) {
   assert.strictEqual(TEST_OBJECTS.import_default, QUnit, 'identity');
@@ -17,4 +18,8 @@ QUnit.test('require-indirect', function (assert) {
   assert.strictEqual(TEST_OBJECTS.require_default, QUnit, 'identity');
   assert.strictEqual(QUnit.hello_require_default, 'require-default', 'extend QUnit');
   assert.strictEqual(assert.hello_require_default, 'require-default', 'extend assert');
+
+  assert.strictEqual(TEST_OBJECTS.require_sub, QUnit, 'identity');
+  assert.strictEqual(QUnit.hello_require_sub, 'require-sub', 'extend QUnit');
+  assert.strictEqual(assert.hello_require_sub, 'require-sub', 'extend assert');
 });
diff --git a/demos/bundlers/test/require-sub.cjs b/demos/bundlers/test/require-sub.cjs
new file mode 100644
index 000000000..07efbf958
--- /dev/null
+++ b/demos/bundlers/test/require-sub.cjs
@@ -0,0 +1,10 @@
+const QUnit = require('qunit').QUnit;
+const { add } = require('./src.js');
+
+(globalThis.TEST_OBJECTS || (globalThis.TEST_OBJECTS = {})).require_sub = QUnit;
+
+QUnit.hello_require_sub = QUnit.assert.hello_require_sub = 'require-sub';
+
+QUnit.test('require-sub', function (assert) {
+  assert.equal(add(2, 3), 5);
+});