Ensure transferList is empty for non owning readable streams

Author: youennf

index.bs

@@ -1585,6 +1585,8 @@ the following table:
  for="ReadableStreamDefaultController">enqueue(|chunk|, |options|)</dfn> method steps are:
 
  1. Let |transferList| be |options|["transfer"].
+ 1. If |transferList| is not [=list/is empty|empty=] and [=this=].[=ReadableStreamDefaultController/[[isOwning]]=] is false
+    throw a {{TypeError}} exception.
  1. If ! [$ReadableStreamDefaultControllerCanCloseOrEnqueue$]([=this=]) is false, throw a
     {{TypeError}} exception.
  1. Perform ? [$ReadableStreamDefaultControllerEnqueue$]([=this=], |chunk|, |transferList|).

reference-implementation/lib/ReadableStreamDefaultController-impl.js

@@ -19,6 +19,9 @@ exports.implementation = class ReadableStreamDefaultControllerImpl {
 
   enqueue(chunk, options) {
     const transferList = options ? options.transfer : undefined;
+    if (transferList.length && !this._isOwning) {
+      throw new TypeError('The stream is not an owning stream and cannot make use of options');
+    }
     if (aos.ReadableStreamDefaultControllerCanCloseOrEnqueue(this) === false) {
       throw new TypeError('The stream is not in a state that permits enqueue');
     }