pkgs/http_client_conformance_tests/lib/src/dummy_isolate.dart

import 'dart:async';

// ignore: avoid_classes_with_only_static_members
/// An Isolate implementation for the web that throws when used.
abstract class Isolate {
  static Future<R> run<R>(FutureOr<R> Function() computation,
          {String? debugName}) =>
      throw ArgumentError.value('true', 'canWorkInIsolates',
          'isolate tests are not supported on the web');
}