Use (ArrayBufferView or undefined) for ReadableStreamBYOBReadResult

The standard returns an ReadableStreamBYOBReadResult with an undefined value, and the tests rely on this, but it wasn't permitted by the IDL. Fix the IDL to match the actual behaviour. Closes whatwg/webidl#1094.
whatwg · Feb 2, 2022 · 5fc90be · 5fc90be
1 parent 5afb0e0
commit 5fc90be
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diff --git a/index.bs b/index.bs
@@ -1308,7 +1308,7 @@ interface ReadableStreamBYOBReader {
 ReadableStreamBYOBReader includes ReadableStreamGenericReader;
 
 dictionary ReadableStreamBYOBReadResult {
-  ArrayBufferView value;
+  (ArrayBufferView or undefined) value;
   boolean done;
 };
 </xmp>

diff --git a/reference-implementation/lib/ReadableStreamBYOBReadResult.webidl b/reference-implementation/lib/ReadableStreamBYOBReadResult.webidl
@@ -1,4 +1,4 @@
 dictionary ReadableStreamBYOBReadResult {
-  ArrayBufferView value;
+  (ArrayBufferView or undefined) value;
   boolean done;
 };