1 files changed, 60 insertions, 0 deletions
diff --git a/src/js/builtins/TransformStreamDefaultController.ts b/src/js/builtins/TransformStreamDefaultController.ts
new file mode 100644
index 000000000..1045498b8
--- /dev/null
+++ b/src/js/builtins/TransformStreamDefaultController.ts
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2020 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+export function initializeTransformStreamDefaultController(this) {
+  return this;
+}
+
+$getter;
+export function desiredSize(this) {
+  if (!$isTransformStreamDefaultController(this))
+    throw $makeThisTypeError("TransformStreamDefaultController", "enqueue");
+
+  const stream = $getByIdDirectPrivate(this, "stream");
+  const readable = $getByIdDirectPrivate(stream, "readable");
+  const readableController = $getByIdDirectPrivate(readable, "readableStreamController");
+
+  return $readableStreamDefaultControllerGetDesiredSize(readableController);
+}
+
+export function enqueue(this, chunk) {
+  if (!$isTransformStreamDefaultController(this))
+    throw $makeThisTypeError("TransformStreamDefaultController", "enqueue");
+
+  $transformStreamDefaultControllerEnqueue(this, chunk);
+}
+
+export function error(this, e) {
+  if (!$isTransformStreamDefaultController(this)) throw $makeThisTypeError("TransformStreamDefaultController", "error");
+
+  $transformStreamDefaultControllerError(this, e);
+}
+
+export function terminate(this) {
+  if (!$isTransformStreamDefaultController(this))
+    throw $makeThisTypeError("TransformStreamDefaultController", "terminate");
+
+  $transformStreamDefaultControllerTerminate(this);
+}