use universal_io

Author: Lyokone

packages/firebase_storage/firebase_storage/lib/firebase_storage.dart

@@ -14,6 +14,7 @@ import 'package:firebase_core_platform_interface/firebase_core_platform_interfac
     show FirebasePluginPlatform;
 import 'package:firebase_storage_platform_interface/firebase_storage_platform_interface.dart';
 import 'package:flutter/foundation.dart';
+import 'package:universal_io/io.dart' show File;
 
 import 'src/utils.dart';
 

packages/firebase_storage/firebase_storage/pubspec.yaml

@@ -25,6 +25,8 @@ dependencies:
   firebase_storage_web: ^3.10.3
   flutter:
     sdk: flutter
+  # Used to expose File even when web isn't supported
+  universal_io: ^2.2.2
 
 dev_dependencies:
   flutter_test: