The incoming event type.
Parsed request cookies.
The incoming event (request/intention).
A fetch implementation (credentials-aware on the server).
Optionalinit: RequestInitOptionalinit: RequestInitTrue in the browser.
True during server-side rendering.
OptionalsignalAbort signal to cancel the load (e.g. request aborted).
OptionaltokenAuth token resolved from the request (cookie/header), if any.
Context handed to a server loader. Carries the request, the resolved auth token and cookies, an abort signal, a credentials-aware
fetch, and the runtime side (server/client).