Optional
init: RequestInitAn alternative fetch function to use instead of the default fetch function. This may be useful in nonstandard runtime environments, such as edge workers.
Optional
init: RequestInitAdditional options that control how requests and responses are processed. This can be used to proxy requests through other hosts, for example.
An alternative fetch function to use instead of the default fetch function. This may be useful in nonstandard runtime environments, such as edge workers.