refactor(server-utils): Drop dead firestore types and no-explicit-any disable

Remove the unused `DocumentData` type, the unread `FirestoreSettings.ssl`
and `FirestoreLike.settings` members, and narrow the `toJSON` return to what
`buildAttributes` actually reads. Switching the `FirebaseOptions` index
signature to `unknown` lets the file drop its `no-explicit-any` eslint-disable.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: nicohrubec

packages/server-utils/src/integrations/tracing-channel/firebase/firestore-types.ts

@@ -1,11 +1,9 @@
-/* eslint-disable @typescript-eslint/no-explicit-any */
-
 // Minimal structural types inlined from `firebase/app` and `firebase/firestore`, kept just wide enough
 // for the attributes the subscriber reads off a Firestore reference. Inlined (rather than imported) so
 // `@sentry/server-utils` needs no firebase dependency.
 
 export interface FirebaseOptions {
-  [key: string]: any;
+  [key: string]: unknown;
   apiKey?: string;
   projectId?: string;
   appId?: string;
@@ -20,17 +18,11 @@ export interface FirebaseApp {
 
 export interface FirestoreSettings {
   host?: string;
-  ssl?: boolean;
 }
 
 interface FirestoreLike {
   app: FirebaseApp;
-  settings: FirestoreSettings;
-  toJSON: () => { app: FirebaseApp; settings: FirestoreSettings };
-}
-
-export interface DocumentData {
-  [field: string]: any;
+  toJSON: () => { settings?: FirestoreSettings };
 }
 
 export interface DocumentReference {

packages/server-utils/src/integrations/tracing-channel/firebase/firestore.ts

@@ -82,8 +82,7 @@ export function getPortAndAddress(settings: FirestoreSettings): {
 function buildAttributes(reference: FirestoreReference): SpanAttributes {
   const firestoreApp: FirebaseApp = reference.firestore.app;
   const firestoreOptions: FirebaseOptions = firestoreApp.options;
-  const json: { settings?: FirestoreSettings } = reference.firestore.toJSON() || {};
-  const settings: FirestoreSettings = json.settings || {};
+  const settings: FirestoreSettings = reference.firestore.toJSON()?.settings || {};
 
   const attributes: SpanAttributes = {
     [DB_COLLECTION_NAME]: reference.path,