Copy pageCopy pageCopy this page as Markdown for LLMsView as MarkdownView this page as plain textOpen in ClaudeAsk questions about this pageOpen in ChatGPTAsk questions about this pageOn this pageReadableStreamGenericReaderExtended by ReadableStreamBYOBReader ReadableStreamDefaultReader Methods cancel() cancel(reason?): Promise<void>; MDN Reference Parameters ParameterTypereason?any Returns Promise<void> Properties closed readonly closed: Promise<void>; MDN Reference