diff --git a/web_generator/bin/gen_interop_bindings.dart b/web_generator/bin/gen_interop_bindings.dart
index 10e74479..02d2b032 100644
--- a/web_generator/bin/gen_interop_bindings.dart
+++ b/web_generator/bin/gen_interop_bindings.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 import 'dart:io';
 
 import 'package:args/args.dart';
diff --git a/web_generator/lib/src/cli.dart b/web_generator/lib/src/cli.dart
index dec055a1..af517b77 100644
--- a/web_generator/lib/src/cli.dart
+++ b/web_generator/lib/src/cli.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 import 'dart:collection';
 import 'dart:io';
 import 'package:analyzer/dart/analysis/analysis_context_collection.dart';
diff --git a/web_generator/lib/src/dts/config.dart b/web_generator/lib/src/dts/config.dart
index 4e9103b4..92389201 100644
--- a/web_generator/lib/src/dts/config.dart
+++ b/web_generator/lib/src/dts/config.dart
@@ -1 +1,5 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 final class Config {}
diff --git a/web_generator/lib/src/dts/parser.dart b/web_generator/lib/src/dts/parser.dart
index 439ef2b5..07c3838f 100644
--- a/web_generator/lib/src/dts/parser.dart
+++ b/web_generator/lib/src/dts/parser.dart
@@ -1,2 +1,6 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 // TODO(nikeokoronkwo): Implement this function
 dynamic parseDeclarationFiles(Iterable<String> files) {}
diff --git a/web_generator/lib/src/dts/transform.dart b/web_generator/lib/src/dts/transform.dart
index 1b495b2a..400e6049 100644
--- a/web_generator/lib/src/dts/transform.dart
+++ b/web_generator/lib/src/dts/transform.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 class DeclarationMap {
   String generate() {
     throw UnimplementedError();
diff --git a/web_generator/lib/src/js/typescript.dart b/web_generator/lib/src/js/typescript.dart
deleted file mode 100644
index 8b137891..00000000
--- a/web_generator/lib/src/js/typescript.dart
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/web_generator/lib/src/js/typescript.types.dart b/web_generator/lib/src/js/typescript.types.dart
deleted file mode 100644
index 8b137891..00000000
--- a/web_generator/lib/src/js/typescript.types.dart
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/web_generator/test/ts_bindings_test.dart b/web_generator/test/ts_bindings_test.dart
index 3470d7a1..669d24ed 100644
--- a/web_generator/test/ts_bindings_test.dart
+++ b/web_generator/test/ts_bindings_test.dart
@@ -1,3 +1,7 @@
+// Copyright (c) 2025, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
 @TestOn('vm')
 @Tags(['node'])
 library;