fix: wire up onLog() & setLogLevel() for VertexAI

packages/app/lib/internal/registry/app.js

@@ -28,6 +28,7 @@ import FirebaseApp from '../../FirebaseApp';
 import { DEFAULT_APP_NAME } from '../constants';
 import { setReactNativeAsyncStorageInternal } from '../asyncStorage';
 import { getAppModule } from './nativeModule';
+import { setLogLevel as setLogLevelInternal } from '../logger';
 
 const APP_REGISTRY = {};
 let onAppCreateFn = null;
@@ -203,6 +204,8 @@ export function setLogLevel(logLevel) {
   if (!['error', 'warn', 'info', 'debug', 'verbose'].includes(logLevel)) {
     throw new Error('LogLevel must be one of "error", "warn", "info", "debug", "verbose"');
   }
+  // This is setting LogLevel for VertexAI which does not wrap around native SDK
+  setLogLevelInternal(logLevel);
 
   if (isIOS || isOther) {
     getAppModule().setLogLevel(logLevel);

packages/app/lib/modular/index.js

@@ -6,11 +6,14 @@ import {
   initializeApp as initializeAppCompat,
   setLogLevel as setLogLevelCompat,
 } from '../internal';
+import { setUserLogHandler } from '../internal/logger';
 
 /**
  * @typedef {import('..').ReactNativeFirebase.FirebaseApp} FirebaseApp
  * @typedef {import('..').ReactNativeFirebase.FirebaseAppOptions} FirebaseAppOptions
  * @typedef {import('..').ReactNativeFirebase.LogLevelString} LogLevelString
+ * @typedef {import('../internal/logger').LogCallback} LogCallback
+ * @typedef {import('../internal/logger').LogOptions} LogOptions
  */
 
 /**
@@ -34,13 +37,13 @@ export function registerVersion(libraryKeyOrName, version, variant) {
 }
 
 /**
- * Sets log handler for all Firebase SDKs.
- * @param {Function} logCallback - The callback function to handle logs.
- * @param {Object} [options] - Optional settings for log handling.
- * @returns {Promise<void>}
+ * Sets log handler for VertexAI only currently.
+ * @param {LogCallback | null} logCallback - The callback function to handle logs.
+ * @param {LogOptions} [options] - Optional settings for log handling.
+ * @returns {void}
  */
 export function onLog(logCallback, options) {
-  throw new Error('onLog is only supported on Web');
+  setUserLogHandler(logCallback, options);
 }
 
 /**