feat: add TypeScript Express test bundle and TS-specific tests

Add node-ts-express test fixture with TypeScript entry point (app.ts)
and @types/express devDependency. Add TestNodeJSTypeScriptBundle tests
covering TS manifest structure, bundle contents, entry point detection,
and devDependencies exclusion from packages section.

Author: mconflitti-pbc

tests/test_bundle.py

@@ -3025,6 +3025,7 @@ def test_make_bundle_missing_file_in_manifest():
 # -- Node.js bundle and manifest tests --
 
 _NODE_EXPRESS_DIR = join(dirname(__file__), "testdata", "node-express")
+_NODE_TS_EXPRESS_DIR = join(dirname(__file__), "testdata", "node-ts-express")
 
 
 def _make_node_env(**overrides):
@@ -3202,3 +3203,43 @@ def test_validate_nonexistent_file(self):
     def test_validate_auto_detection(self):
         ep = validate_node_entry_point(None, _NODE_EXPRESS_DIR)
         assert ep == "app.js"
+
+
+class TestNodeJSTypeScriptBundle:
+    """Tests for TypeScript Express bundles (Node.js 24+ native type stripping)."""
+
+    def test_ts_manifest_structure(self):
+        env = _make_node_env(node_version="24.14.0")
+        manifest, files = make_nodejs_manifest(_NODE_TS_EXPRESS_DIR, "app.ts", env, [], [])
+
+        assert manifest["metadata"]["appmode"] == "node-api"
+        assert manifest["metadata"]["entrypoint"] == "app.ts"
+        assert manifest["node"]["version"] == "24.14.0"
+
+    def test_ts_manifest_files(self):
+        env = _make_node_env(node_version="24.14.0")
+        manifest, files = make_nodejs_manifest(_NODE_TS_EXPRESS_DIR, "app.ts", env, [], [])
+
+        assert "app.ts" in manifest["files"]
+        assert "package.json" in manifest["files"]
+
+    def test_ts_bundle_contents(self):
+        env = _make_node_env(node_version="24.14.0")
+        bundle_file = make_nodejs_bundle(_NODE_TS_EXPRESS_DIR, "app.ts", env, [], [])
+
+        with tarfile.open(mode="r:gz", fileobj=bundle_file) as tar:
+            names = sorted(tar.getnames())
+            assert "manifest.json" in names
+            assert "app.ts" in names
+            assert "package.json" in names
+
+    def test_ts_entrypoint_detection(self):
+        ep = get_default_node_entrypoint(_NODE_TS_EXPRESS_DIR)
+        assert ep == "app.ts"
+
+    def test_ts_devdependencies_excluded(self):
+        env = _make_node_env(node_version="24.14.0")
+        manifest, _ = make_nodejs_manifest(_NODE_TS_EXPRESS_DIR, "app.ts", env, [], [])
+
+        # devDependencies (@types/express) should not be in packages
+        assert "@types/express" not in manifest.get("packages", {})

tests/testdata/node-ts-express/app.ts

@@ -0,0 +1,16 @@
+import express, { Request, Response } from 'express';
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+app.get('/', (req: Request, res: Response) => {
+    res.json({ status: 'ok', framework: 'express', language: 'typescript' });
+});
+
+app.get('/health', (req: Request, res: Response) => {
+    res.status(200).send('OK');
+});
+
+app.listen(PORT, () => {
+    console.log(`TypeScript Express server listening on port ${PORT}`);
+});

tests/testdata/node-ts-express/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "node-ts-express",
+  "version": "1.0.0",
+  "description": "TypeScript Express HTTP server for testing",
+  "main": "app.ts",
+  "scripts": {
+    "start": "node app.ts"
+  },
+  "dependencies": {
+    "express": "^4.21.0"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.21"
+  }
+}