I have a question about the sendToDeviceGroup function.

[dev-tryit]

I have a question about the sendToDeviceGroup function.

sendToDeviceGroup has three parameters.
sendToDeviceGroup(notificationKey: string, payload: MessagingPayload, options?: MessagingOptions): Promise<MessagingDeviceGroupResponse>;

Among these, I am curious about MessagingOptions.

In MessagingOptions, the priority field defaults to high.
(https://firebase.google.com/docs/reference/admin/node/firebase-admin.messaging.messagingoptions.md#messagingoptions_interface)

if MessagingOptions is undefiened, Is the message priority set high when message notifications are sent?

[lahirumaramba]

Looking at the reference docs and the REST API , if MessagingOptions are not defined the API will use the default priorities, which is normal for data messages and high for notification messages.

Adding @chong-shao to confirm this as sendToDeviceGroup uses the FCM legacy API.