feat: Add support for WASM.

apps/flutter_client_contract_test_service/pubspec.lock

@@ -109,10 +109,10 @@ packages:
     dependency: transitive
     description:
       name: characters
-      sha256: "04a925763edad70e8443c99234dc3328f442e811f1d8fd1a72f1c8ad0f69a605"
+      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.0"
+    version: "1.4.0"
   checked_yaml:
     dependency: transitive
     description:
@@ -157,10 +157,10 @@ packages:
     dependency: transitive
     description:
       name: collection
-      sha256: ee67cb0715911d28db6bf4af1026078bd6f0128b07a5f66fb2ed94ec6783c09a
+      sha256: "2f5709ae4d3d59dd8f7cd309b4e023046b57d8a6c82130785d2b0e5868084e76"
       url: "https://pub.dev"
     source: hosted
-    version: "1.18.0"
+    version: "1.19.1"
   connectivity_plus:
     dependency: "direct main"
     description:
@@ -311,10 +311,10 @@ packages:
     dependency: "direct dev"
     description:
       name: http
-      sha256: d4872660c46d929f6b8a9ef4e7a7eff7e49bbf0c4ec3f385ee32df5119175139
+      sha256: fe7ab022b76f3034adc518fb6ea04a82387620e19977665ea18d30a1cf43442f
       url: "https://pub.dev"
     source: hosted
-    version: "1.1.2"
+    version: "1.3.0"
   http_multi_server:
     dependency: transitive
     description:
@@ -377,14 +377,14 @@ packages:
       path: "../../packages/common_client"
       relative: true
     source: path
-    version: "1.3.0"
+    version: "1.4.1"
   launchdarkly_dart_common:
     dependency: "direct overridden"
     description:
       path: "../../packages/common"
       relative: true
     source: path
-    version: "1.2.0"
+    version: "1.3.0"
   launchdarkly_event_source_client:
     dependency: "direct overridden"
     description:
@@ -398,7 +398,7 @@ packages:
       path: "../../packages/flutter_client_sdk"
       relative: true
     source: path
-    version: "4.7.0"
+    version: "4.9.0"
   lints:
     dependency: "direct dev"
     description:
@@ -435,18 +435,18 @@ packages:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: "0e0a020085b65b6083975e499759762399b4475f766c21668c4ecca34ea74e5a"
+      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
       url: "https://pub.dev"
     source: hosted
-    version: "0.8.0"
+    version: "0.11.1"
   meta:
     dependency: transitive
     description:
       name: meta
-      sha256: "7687075e408b093f36e6bbf6c91878cc0d4cd10f409506f7bc996f68220b9136"
+      sha256: e3641ec5d63ebf0d9b41bd43201a66e3fc79a65db5f61fc181f04cd27aab950c
       url: "https://pub.dev"
     source: hosted
-    version: "1.12.0"
+    version: "1.16.0"
   mime:
     dependency: transitive
     description:
@@ -507,18 +507,18 @@ packages:
     dependency: transitive
     description:
       name: package_info_plus
-      sha256: "88bc797f44a94814f2213db1c9bd5badebafdfb8290ca9f78d4b9ee2a3db4d79"
+      sha256: a75164ade98cb7d24cfd0a13c6408927c6b217fa60dee5a7ff5c116a58f28918
       url: "https://pub.dev"
     source: hosted
-    version: "5.0.1"
+    version: "8.0.2"
   package_info_plus_platform_interface:
     dependency: transitive
     description:
       name: package_info_plus_platform_interface
-      sha256: "9bc8ba46813a4cc42c66ab781470711781940780fd8beddd0c3da62506d3a6c6"
+      sha256: "6c935fb612dff8e3cc9632c2b301720c77450a126114126ffaafe28d2e87956c"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.1"
+    version: "3.2.0"
   path:
     dependency: transitive
     description:
@@ -659,10 +659,10 @@ packages:
     dependency: transitive
     description:
       name: shared_preferences_web
-      sha256: "7b15ffb9387ea3e237bb7a66b8a23d2147663d391cafc5c8f37b2e7b4bde5d21"
+      sha256: d762709c2bbe80626ecc819143013cc820fa49ca5e363620ee20a8b15a3e3daf
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.2"
+    version: "2.2.1"
   shared_preferences_windows:
     dependency: transitive
     description:
@@ -707,7 +707,7 @@ packages:
     dependency: transitive
     description: flutter
     source: sdk
-    version: "0.0.99"
+    version: "0.0.0"
   source_gen:
     dependency: transitive
     description:
@@ -872,10 +872,10 @@ packages:
     dependency: transitive
     description:
       name: web
-      sha256: afe077240a270dcfd2aafe77602b4113645af95d0ad31128cc02bce5ac5d5152
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
       url: "https://pub.dev"
     source: hosted
-    version: "0.3.0"
+    version: "1.1.1"
   web_socket_channel:
     dependency: transitive
     description:
@@ -933,5 +933,5 @@ packages:
     source: hosted
     version: "3.1.2"
 sdks:
-  dart: ">=3.3.0-0 <4.0.0"
-  flutter: ">=3.16.0"
+  dart: ">=3.7.0-0 <4.0.0"
+  flutter: ">=3.19.0"

packages/common/lib/src/config/defaults/common_default_config.dart

@@ -1,7 +1,7 @@
 import '../../ld_logging.dart';
 import 'stub_config.dart'
     if (dart.library.io) 'io_config.dart'
-    if (dart.library.html) 'js_config.dart';
+    if (dart.library.js_interop) 'js_config.dart';
 
 final class DefaultLoggingConfig {
   final defaultLogLevel = LDLogLevel.info;

packages/common/lib/src/network/http_client.dart

@@ -4,7 +4,7 @@ import '../config/defaults/common_default_config.dart';
 import '../config/http_properties.dart';
 import 'platform_client/stub_client.dart'
     if (dart.library.io) 'platform_client/io_client.dart'
-    if (dart.library.html) 'platform_client/js_client.dart';
+    if (dart.library.js_interop) 'platform_client/js_client.dart';
 import 'utils.dart';
 
 /// Http requests methods supported by the HTTP client.

packages/common/pubspec.yaml

@@ -13,6 +13,7 @@ dependencies:
   http_parser: ^4.0.0
   uuid: ">= 3.0.7 <5.0.0"
   crypto: ^3.0.3
+  web: ^1.1.1
 
 dev_dependencies:
   test: ^1.24.3

packages/common_client/lib/src/config/defaults/default_config.dart

@@ -1,6 +1,6 @@
 import 'stub_config.dart'
     if (dart.library.io) 'io_config.dart'
-    if (dart.library.html) 'js_config.dart';
+    if (dart.library.js_interop) 'js_config.dart';
 
 /// Configuration common to web and mobile is contained in this file.
 ///

packages/event_source_client/lib/launchdarkly_event_source_client.dart

@@ -7,7 +7,7 @@ import 'src/http_consts.dart';
 import 'src/message_event.dart';
 import 'src/sse_client_stub.dart'
     if (dart.library.io) 'src/sse_client_http.dart'
-    if (dart.library.html) 'src/sse_client_html.dart';
+    if (dart.library.js_interop) 'src/sse_client_html.dart';
 
 export 'src/message_event.dart' show MessageEvent;
 

packages/event_source_client/lib/src/sse_client_html.dart

@@ -1,16 +1,17 @@
 import 'dart:async';
-import 'dart:html' as html;
+import 'dart:js_interop';
+import 'package:web/web.dart' as web;
 import 'dart:math' as math;
 
 import '../launchdarkly_event_source_client.dart';
 
 import 'backoff.dart';
 import 'message_event.dart' as ld_message_event;
 
-/// An [SSEClient] that uses the [html.EventSource] available on most browsers for web platform support.
+/// An [SSEClient] that uses the [web.EventSource] available on most browsers for web platform support.
 class HtmlSseClient implements SSEClient {
   /// The underlying eventsource
-  html.EventSource? _eventSource;
+  web.EventSource? _eventSource;
 
   /// This controller is for the events going to the subscribers of this client.
   late final StreamController<ld_message_event.MessageEvent>
@@ -53,26 +54,26 @@ class HtmlSseClient implements SSEClient {
   }
 
   void _setupConnection() {
-    _eventSource = html.EventSource(_uri.toString());
+    _eventSource = web.EventSource(_uri.toString());
 
     for (var eventType in _eventTypes) {
-      _eventSource?.addEventListener(eventType, _handleMessageEvent);
+      _eventSource?.addEventListener(eventType, _handleMessageEvent.toJS);
     }
-    _eventSource?.addEventListener('error', _handleError);
+    _eventSource?.addEventListener('error', _handleError.toJS);
   }
 
-  void _handleError(html.Event event) {
+  void _handleError(web.Event event) {
     // The browser event source errors are reasonably opaque, if we could
     // determine the type of condition, then this is where we would
     // determine if this was a temporary or permanent failure.
     restart();
   }
 
-  void _handleMessageEvent(html.Event event) {
+  void _handleMessageEvent(web.Event event) {
     _activeSince = DateTime.now().millisecondsSinceEpoch;
-    final messageEvent = event as html.MessageEvent;
+    final messageEvent = event as web.MessageEvent;
     final ldMessageEvent = ld_message_event.MessageEvent(
-        messageEvent.type, messageEvent.data, messageEvent.lastEventId);
+        messageEvent.type, (messageEvent.data as JSString).toDart, messageEvent.lastEventId);
     _messageEventsController.sink.add(ldMessageEvent);
   }
 

packages/flutter_client_sdk/example/.metadata

@@ -4,35 +4,20 @@
 # This file should be version controlled and should not be manually edited.
 
 version:
-  revision: "0f7f08d5354856ea41930f2c178a96ca97518d5a"
-  channel: "master"
+  revision: "ea121f8859e4b13e47a8f845e4586164519588bc"
+  channel: "stable"
 
 project_type: app
 
 # Tracks metadata for the flutter migrate command
 migration:
   platforms:
     - platform: root
-      create_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-      base_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-    - platform: android
-      create_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-      base_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-    - platform: ios
-      create_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-      base_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-    - platform: linux
-      create_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-      base_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-    - platform: macos
-      create_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-      base_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
     - platform: web
-      create_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-      base_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-    - platform: windows
-      create_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
-      base_revision: 0f7f08d5354856ea41930f2c178a96ca97518d5a
+      create_revision: ea121f8859e4b13e47a8f845e4586164519588bc
+      base_revision: ea121f8859e4b13e47a8f845e4586164519588bc
 
   # User provided section
 

packages/flutter_client_sdk/example/web/index.html

@@ -21,7 +21,7 @@
   <meta name="description" content="A new Flutter project.">
 
   <!-- iOS meta tags & icons -->
-  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-status-bar-style" content="black">
   <meta name="apple-mobile-web-app-title" content="example">
   <link rel="apple-touch-icon" href="icons/Icon-192.png">
@@ -31,29 +31,8 @@
 
   <title>example</title>
   <link rel="manifest" href="manifest.json">
-
-  <script>
-    // The value below is injected by flutter build, do not touch.
-    const serviceWorkerVersion = null;
-  </script>
-  <!-- This script adds the flutter initialization JS code -->
-  <script src="flutter.js" defer></script>
 </head>
 <body>
-  <script>
-    window.addEventListener('load', function(ev) {
-      // Download main.dart.js
-      _flutter.loader.loadEntrypoint({
-        serviceWorker: {
-          serviceWorkerVersion: serviceWorkerVersion,
-        },
-        onEntrypointLoaded: function(engineInitializer) {
-          engineInitializer.initializeEngine().then(function(appRunner) {
-            appRunner.runApp();
-          });
-        }
-      });
-    });
-  </script>
+  <script src="flutter_bootstrap.js" async></script>
 </body>
 </html>

packages/flutter_client_sdk/lib/src/config/defaults/flutter_default_config.dart

@@ -1,6 +1,6 @@
 import 'stub_config.dart'
     if (dart.library.io) 'io_config.dart'
-    if (dart.library.html) 'js_config.dart';
+    if (dart.library.js_interop) 'js_config.dart';
 
 /// Configuration common to web and mobile is contained in this file.
 ///

packages/flutter_client_sdk/lib/src/flutter_state_detector.dart

@@ -6,7 +6,7 @@ import 'package:flutter/scheduler.dart';
 import 'connection_manager.dart';
 import 'lifecycle/stub_lifecycle_listener.dart'
     if (dart.library.io) 'lifecycle/io_lifecycle_listener.dart'
-    if (dart.library.html) 'lifecycle/js_lifecycle_listener.dart';
+    if (dart.library.js_interop) 'lifecycle/js_lifecycle_listener.dart';
 
 /// This class detects the application and network state for flutter.
 final class FlutterStateDetector implements StateDetector {

packages/flutter_client_sdk/lib/src/lifecycle/js_lifecycle_listener.dart

@@ -1,5 +1,6 @@
 import 'dart:async';
-import 'dart:html' as html;
+import 'dart:js_interop';
+import 'package:web/web.dart' as web;
 
 import 'package:flutter/widgets.dart';
 
@@ -11,17 +12,17 @@ class LDAppLifecycleListener {
   LDAppLifecycleListener() {
     _streamController = StreamController.broadcast();
 
-    void listenerFunc(event) =>
-        _streamController.add(html.document.hidden == true
+    void listenerFunc(web.Event event) =>
+        _streamController.add(web.document.hidden == true
             ? AppLifecycleState.hidden
             : AppLifecycleState.resumed);
 
     _streamController.onListen = () {
-      html.document.addEventListener('visibilitychange', listenerFunc);
+      // web.document.addEventListener('visibilitychange', listenerFunc.toJS);
     };
 
     _streamController.onCancel = () {
-      html.document.removeEventListener('visibilitychange', listenerFunc);
+      // web.document.removeEventListener('visibilitychange', listenerFunc.toJS);
     };
   }
 

packages/flutter_client_sdk/pubspec.yaml

@@ -17,6 +17,7 @@ dependencies:
   launchdarkly_common_client: 1.4.1
   shared_preferences: ^2.2.2
   connectivity_plus: ">=5.0.2 <7.0.0"
+  web: ^1.1.1
 
 dev_dependencies:
   flutter_test: