In the browser there is no undici dispatcher, so fetch is issued without one and the browser
manages the transport. Any NODE_ONLY_OPTIONS set explicitly cannot be honored and throws,
so a misconfiguration surfaces immediately instead of being silently dropped. With none set this
returns undefined and the connection omits the dispatcher field.
In the browser there is no
undicidispatcher, sofetchis issued without one and the browser manages the transport. Any NODE_ONLY_OPTIONS set explicitly cannot be honored and throws, so a misconfiguration surfaces immediately instead of being silently dropped. With none set this returnsundefinedand the connection omits thedispatcherfield.