update PowerSyncDatabase init examples for web

Author: stevensJourney

demos/supabase-anonymous-auth/lib/powersync.dart

@@ -1,6 +1,5 @@
 // This file performs setup of the PowerSync database
-import 'dart:io';
-
+import 'package:universal_io/io.dart';
 import 'package:flutter/foundation.dart';
 import 'package:logging/logging.dart';
 import 'package:path/path.dart';
@@ -137,8 +136,13 @@ String? getUserId() {
 }
 
 Future<String> getDatabasePath() async {
-  final dir = kIsWeb ? Directory('/') : await getApplicationSupportDirectory();
-  return join(dir.path, 'powersync-demo.db');
+  const dbFilename = 'powersync-demo.db';
+  // getApplicationSupportDirectory is not supported on Web
+  if (kIsWeb) {
+    return dbFilename;
+  }
+  final dir = await getApplicationSupportDirectory();
+  return join(dir.path, dbFilename);
 }
 
 Future<void> openDatabase() async {

demos/supabase-anonymous-auth/pubspec.lock

@@ -540,6 +540,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.2"
+  universal_io:
+    dependency: "direct main"
+    description:
+      name: universal_io
+      sha256: "1722b2dcc462b4b2f3ee7d188dad008b6eb4c40bbd03a3de451d82c78bba9aad"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
   url_launcher:
     dependency: transitive
     description:

demos/supabase-anonymous-auth/pubspec.yaml

@@ -17,6 +17,7 @@ dependencies:
   path: ^1.8.3
   logging: ^1.2.0
   sqlite_async: ^0.7.0-alpha.1
+  universal_io: ^2.2.2
 
 dev_dependencies:
   flutter_test:

demos/supabase-edge-function-auth/lib/powersync.dart

@@ -1,6 +1,5 @@
 // This file performs setup of the PowerSync database
-import 'dart:io';
-
+import 'package:universal_io/io.dart';
 import 'package:flutter/foundation.dart';
 import 'package:logging/logging.dart';
 import 'package:path/path.dart';
@@ -140,8 +139,13 @@ String? getUserId() {
 }
 
 Future<String> getDatabasePath() async {
-  final dir = kIsWeb ? Directory('/') : await getApplicationSupportDirectory();
-  return join(dir.path, 'powersync-demo.db');
+  const dbFilename = 'powersync-demo.db';
+  // getApplicationSupportDirectory is not supported on Web
+  if (kIsWeb) {
+    return dbFilename;
+  }
+  final dir = await getApplicationSupportDirectory();
+  return join(dir.path, dbFilename);
 }
 
 Future<void> openDatabase() async {

demos/supabase-edge-function-auth/pubspec.lock

@@ -540,6 +540,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.2"
+  universal_io:
+    dependency: "direct main"
+    description:
+      name: universal_io
+      sha256: "1722b2dcc462b4b2f3ee7d188dad008b6eb4c40bbd03a3de451d82c78bba9aad"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
   url_launcher:
     dependency: transitive
     description:

demos/supabase-edge-function-auth/pubspec.yaml

@@ -17,6 +17,7 @@ dependencies:
   path: ^1.8.3
   logging: ^1.2.0
   sqlite_async: ^0.7.0-alpha.1
+  universal_io: ^2.2.2
 
 dev_dependencies:
   flutter_test:

demos/supabase-simple-chat/lib/powersync.dart

@@ -1,5 +1,3 @@
-import 'dart:io';
-
 import 'package:flutter/foundation.dart';
 import 'package:powersync/powersync.dart';
 import 'package:supabase_flutter/supabase_flutter.dart';
@@ -27,8 +25,13 @@ final List<RegExp> fatalResponseCodes = [
 late final PowerSyncDatabase db;
 
 Future<String> getDatabasePath() async {
-  final dir = kIsWeb ? Directory('/') : await getApplicationSupportDirectory();
-  return join(dir.path, 'powersync-demo.db');
+  const dbFilename = 'powersync-demo.db';
+  // getApplicationSupportDirectory is not supported on Web
+  if (kIsWeb) {
+    return dbFilename;
+  }
+  final dir = await getApplicationSupportDirectory();
+  return join(dir.path, dbFilename);
 }
 
 bool isLoggedIn() {

demos/supabase-simple-chat/pubspec.lock

@@ -604,6 +604,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.3.2"
+  universal_io:
+    dependency: "direct main"
+    description:
+      name: universal_io
+      sha256: "1722b2dcc462b4b2f3ee7d188dad008b6eb4c40bbd03a3de451d82c78bba9aad"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.2.2"
   url_launcher:
     dependency: transitive
     description:

demos/supabase-simple-chat/pubspec.yaml

@@ -41,6 +41,7 @@ dependencies:
   path_provider: ^2.1.1
   path: ^1.8.3
   logging: ^1.2.0
+  universal_io: ^2.2.2
 
 dev_dependencies:
   flutter_test:

demos/supabase-todolist/lib/powersync.dart

@@ -1,6 +1,4 @@
 // This file performs setup of the PowerSync database
-import 'dart:io';
-
 import 'package:flutter/foundation.dart';
 import 'package:logging/logging.dart';
 import 'package:path/path.dart';
@@ -148,8 +146,13 @@ String? getUserId() {
 }
 
 Future<String> getDatabasePath() async {
-  final dir = kIsWeb ? Directory('/') : await getApplicationSupportDirectory();
-  return join(dir.path, 'powersync-demo.db');
+  const dbFilename = 'powersync-demo.db';
+  // getApplicationSupportDirectory is not supported on Web
+  if (kIsWeb) {
+    return dbFilename;
+  }
+  final dir = await getApplicationSupportDirectory();
+  return join(dir.path, dbFilename);
 }
 
 Future<void> openDatabase() async {