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LibWeb: Use the correct realm when initializing streams

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There is an open issue to clarify exactly what realm is to be used when
creating promises. There are surely many more places we will need to
update to use the correct realm (which will be the realm of `this`'s
relevant global object).
This commit is contained in:
Timothy Flynn 2025-04-15 17:10:02 -04:00 • committed by Tim Flynn
commit df1e51b80b
Notes: github-actions[bot] 2025-04-16 00:34:06 +00:00
2 changed files with 8 additions and 5 deletions
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8
Libraries/LibWeb/Streams/AbstractOperations.cpp
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@ -2017,7 +2017,9 @@ GC::Ref<WebIDL::Promise> readable_stream_reader_generic_cancel(ReadableStreamGen
// https://streams.spec.whatwg.org/#readable-stream-reader-generic-initialize
void readable_stream_reader_generic_initialize(ReadableStreamReader reader, ReadableStream& stream)
{
auto& realm = stream.realm();
// FIXME: Exactly when we should effectively be using the relevant realm of `this` is to be clarified by the spec.
// For now, we do so as needed by WPT tests. See: https://github.com/whatwg/streams/issues/1213
auto& realm = HTML::relevant_realm(reader.visit([](auto& reader) -> JS::Object& { return reader; }));
// 1. Set reader.[[stream]] to stream.
reader.visit([&](auto& reader) { reader->set_stream(stream); });
@ -3574,7 +3576,9 @@ bool is_writable_stream_locked(WritableStream const& stream)
// https://streams.spec.whatwg.org/#set-up-writable-stream-default-writer
WebIDL::ExceptionOr<void> set_up_writable_stream_default_writer(WritableStreamDefaultWriter& writer, WritableStream& stream)
{
auto& realm = writer.realm();
// FIXME: Exactly when we should effectively be using the relevant realm of `this` is to be clarified by the spec.
// For now, we do so as needed by WPT tests. See: https://github.com/whatwg/streams/issues/1213
auto& realm = HTML::relevant_realm(writer);
// 1. If ! IsWritableStreamLocked(stream) is true, throw a TypeError exception.
if (is_writable_stream_locked(stream))