Missing fields in apns type definition for FCM live activities

[ir-fuel]

[REQUIRED] Step 2: Describe your environment

• Firebase Admin SDK version: 13.2.0
• Firebase Product: FCM (auth, database, storage, etc)
• Node.js version: 22.11.0
• NPM version: 10.9.2

[REQUIRED] Step 3: Describe the problem

It seems the type definition of ApnsConfig does not contain the necessary entries for iOS Live Activities.

This is the current definition:

export interface ApnsConfig {
    /**
     * A collection of APNs headers. Header values must be strings.
     */
    headers?: {
        [key: string]: string;
    };
    /**
     * An APNs payload to be included in the message.
     */
    payload?: ApnsPayload;
    /**
     * Options for features provided by the FCM SDK for iOS.
     */
    fcmOptions?: ApnsFcmOptions;
}

however when looking at Firebase examples such as the one here:

https://firebase.google.com/docs/cloud-messaging/ios/live-activity

we see that apns contains a live_activity_token attribute.

"message":{
    "token": "<fcm_token:test>",
    "apns":{
      "live_activity_token": "<live_activity_push_to_start_token>",
      "headers":{
        "apns-priority": "10"
      },
      "payload":{
        "aps": {
          "timestamp": <timestamp>,
          "event": "start",
          "content-state": {
            "demo": 1
          },
          "attributes-type": "DemoAttributes",
          "attributes": {
            "demoAttribute": 1,
          },
          "alert": {
            "title": "test title",
            "body": "test body"
          }
        }
      }
    }
  }

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