OptionallimitedWeb only. If set to true, uses a limited-use App Check token for callable function requests from this instance of Functions. You must use limited-use tokens to call functions with replay protection enabled. By default, this is false.
OptionalsignalWeb only. An AbortSignal that can be used to cancel the streaming response. When the signal is aborted,
the underlying HTTP connection will be terminated. AbortSignal is only available on React Native >= v0.82.
Use for web only, for iOS and Android specific options, use
HttpsCallableOptions.