Optionalinit: RequestInitOptionalinit: RequestInitOptionalqueryOptionalredirectRedirect policy for the stream fetch. Defaults to 'error', which prevents
the Authorization bearer from being replayed to a redirect target. Set
'follow' only with a fully trusted baseUrl — fetch may forward the bearer
to the redirect location.
OptionalmaxCap on bytes buffered for a single un-dispatched SSE event. See DEFAULT_MAX_SSE_FRAME_BYTES.
Optionalsignal
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