// META: global=window,dedicatedworker,sharedworker function assert_xhr(stream) { const client = new XMLHttpRequest(); client.open("POST", "..."); assert_throws(new TypeError(), () => client.send(stream)); } test(() => { const stream = new ReadableStream(); stream.getReader(); assert_xhr(stream); }, "XMLHttpRequest: send() with a stream on which getReader() is called"); test(() => { const stream = new ReadableStream(); stream.getReader().read(); assert_xhr(stream); }, "XMLHttpRequest: send() with a stream on which read() is called"); promise_test(async () => { const stream = new ReadableStream({ pull: c => c.enqueue(new Uint8Array()) }), reader = stream.getReader(); await reader.read(); reader.releaseLock(); assert_xhr(stream); }, "XMLHttpRequest: send() with a stream on which read() and releaseLock() are called");