[Bug]: illegal cast in device_info_plus when compiled to Wasm

[arnaudruffin]

Platform

web in asm mode

Plugin

device_info_plus

Version

10.1.2

Flutter SDK

3.24.2 (stable)

Steps to reproduce

use device_info_plus in a project compile for webasm. It compiles, but on the execution you got illegal cast errors.

1. compile to wasm (see https://docs.flutter.dev/platform-integration/web/wasm for details)
   flutter build web --wasm --no-strip-wasm
2. serve the result

cd build/web
dhttpd '--headers=Cross-Origin-Embedder-Policy=credentialless;Cross-Origin-Opener-Policy=same-origin'

3. open the app in your browser and check its console

Code Sample

void main() async {
  final BaseDeviceInfo deviceInfo = await DeviceInfoPlugin().deviceInfo;
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return Container();
  }
}

Logs

Webasm can't run in flutter -run --verbose. This log is from the web browser.

main.dart.wasm:0x41ed24 Uncaught RuntimeError: illegal cast
    at DeviceInfoPlusWebPlugin.deviceInfo (main.dart.wasm:0x41ed24)
    at DeviceInfoPlugin.webBrowserInfo inner (main.dart.wasm:0x41e9ed)
    at DeviceInfoPlugin.deviceInfo inner (main.dart.wasm:0x41e8cf)
    at run inner (main.dart.wasm:0x23551b)
    at _awaitHelperWithTypeCheck closure at org-dartlang-sdk:///dart-sdk/lib/_internal/wasm/lib/async_patch.dart:97:16 (main.dart.wasm:0x233ee2)
    at closure wrapper at org-dartlang-sdk:///dart-sdk/lib/_internal/wasm/lib/async_patch.dart:97:16 trampoline (main.dart.wasm:0x233f4a)
    at _RootZone.runUnary (main.dart.wasm:0x1e0c26)
    at _Future._propagateToListeners (main.dart.wasm:0x1e0565)
    at _Future._completeWithValue (main.dart.wasm:0x1e019c)
    at _Future._asyncCompleteWithValue closure at org-dartlang-sdk:///dart-sdk/lib/async/future_impl.dart:735:29 (main.dart.wasm:0x1e0147)

Flutter Doctor

Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.24.2, on macOS 14.6.1 23G93 darwin-arm64, locale fr-FR)
[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
[✓] Xcode - develop for iOS and macOS (Xcode 15.4)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2024.1)
[✓] IntelliJ IDEA Ultimate Edition (version 2024.2.1)
[✓] VS Code (version 1.93.0)
[✓] VS Code (version 1.92.0-insider)
[✓] Connected device (3 available)
[✓] Network resources

Checklist before submitting a bug

• I searched issues in this repository and couldn't find such bug/problem
• I Google'd a solution and I couldn't find it
• I searched on StackOverflow for a solution and I couldn't find it
• I read the README.md file of the plugin
• I'm using the latest version of the plugin
• All dependencies are up to date with flutter pub upgrade
• I did a flutter clean
• I tried running the example project