diff --git a/backend/FwLite/FwLiteShared/TypeGen/ReinforcedFwLiteTypingConfig.cs b/backend/FwLite/FwLiteShared/TypeGen/ReinforcedFwLiteTypingConfig.cs
index f2ab99bde..e232e6534 100644
--- a/backend/FwLite/FwLiteShared/TypeGen/ReinforcedFwLiteTypingConfig.cs
+++ b/backend/FwLite/FwLiteShared/TypeGen/ReinforcedFwLiteTypingConfig.cs
@@ -52,41 +52,19 @@ public static void Configure(ConfigurationBuilder builder)
             ],
             exportBuilder => exportBuilder.WithPublicProperties());
         builder.ExportAsEnum<WritingSystemType>().UseString();
-        builder.ExportAsInterface<MiniLcmJsInvokable>().FlattenHierarchy().WithPublicProperties().WithPublicMethods(
-            exportBuilder =>
-            {
-                var isUpdatePatchMethod = exportBuilder.Member.GetParameters()
-                    .Any(p => p.ParameterType.IsGenericType && p.ParameterType.GetGenericTypeDefinition() == (typeof(UpdateObjectInput<>)));
-                if (isUpdatePatchMethod)
-                {
-                    exportBuilder.Ignore();
-                    return;
-                }
-                var isTaskMethod = (exportBuilder.Member.ReturnType.IsGenericType &&
-                                    (exportBuilder.Member.ReturnType.GetGenericTypeDefinition() == typeof(Task<>)
-                                     || exportBuilder.Member.ReturnType.GetGenericTypeDefinition() == typeof(ValueTask<>)))
-                    || exportBuilder.Member.ReturnType == typeof(Task)
-                    || exportBuilder.Member.ReturnType == typeof(ValueTask);
-                if (!isTaskMethod)
-                {
-                    if (exportBuilder.Member.ReturnType == typeof(void))
-                    {
-                        exportBuilder.Returns(typeof(Task));
-                    } else
-                    {
-                        exportBuilder.Returns(typeof(Task<>).MakeGenericType(exportBuilder.Member.ReturnType));
-                    }
-                }
-            });
+        builder.ExportAsInterface<MiniLcmJsInvokable>()
+            .FlattenHierarchy()
+            .WithPublicProperties()
+            .WithPublicMethods(b => b.AlwaysReturnPromise());
         builder.ExportAsEnum<SortField>().UseString();
         builder.ExportAsInterfaces([typeof(QueryOptions), typeof(SortOptions), typeof(ExemplarOptions)],
             exportBuilder => exportBuilder.WithProperties(BindingFlags.Public | BindingFlags.Instance));
 
         builder.ExportAsEnum<DotnetService>().UseString();
-        builder.ExportAsInterface<AuthService>().WithPublicMethods();
-        builder.ExportAsInterface<ImportFwdataService>().WithPublicMethods();
+        builder.ExportAsInterface<AuthService>().WithPublicMethods(b => b.AlwaysReturnPromise());
+        builder.ExportAsInterface<ImportFwdataService>().WithPublicMethods(b => b.AlwaysReturnPromise());
         builder.ExportAsInterface<ServerStatus>().WithPublicProperties();
-        builder.ExportAsInterface<CombinedProjectsService>().WithPublicMethods();
+        builder.ExportAsInterface<CombinedProjectsService>().WithPublicMethods(b => b.AlwaysReturnPromise());
         builder.ExportAsInterface<ProjectModel>().WithPublicProperties();
         builder.ExportAsInterface<ServerProjects>().WithPublicProperties();
         builder.ExportAsInterface<LexboxServer>().WithPublicProperties();
@@ -96,6 +74,35 @@ public static void Configure(ConfigurationBuilder builder)
         builder.ExportAsEnum<ProjectDataFormat>();
     }
 
+    private static void AlwaysReturnPromise(this MethodExportBuilder exportBuilder)
+    {
+        var isUpdatePatchMethod = exportBuilder.Member.GetParameters()
+            .Any(p => p.ParameterType.IsGenericType &&
+                      p.ParameterType.GetGenericTypeDefinition() == (typeof(UpdateObjectInput<>)));
+        if (isUpdatePatchMethod)
+        {
+            exportBuilder.Ignore();
+            return;
+        }
+
+        var isTaskMethod = (exportBuilder.Member.ReturnType.IsGenericType &&
+                            (exportBuilder.Member.ReturnType.GetGenericTypeDefinition() == typeof(Task<>)
+                             || exportBuilder.Member.ReturnType.GetGenericTypeDefinition() == typeof(ValueTask<>)))
+                           || exportBuilder.Member.ReturnType == typeof(Task)
+                           || exportBuilder.Member.ReturnType == typeof(ValueTask);
+        if (!isTaskMethod)
+        {
+            if (exportBuilder.Member.ReturnType == typeof(void))
+            {
+                exportBuilder.Returns(typeof(Task));
+            }
+            else
+            {
+                exportBuilder.Returns(typeof(Task<>).MakeGenericType(exportBuilder.Member.ReturnType));
+            }
+        }
+    }
+
     private static void DisableEsLintChecks(ConfigurationBuilder builder)
     {
         typeof(ExportContext).GetProperty(nameof(ExportContext.FileOperations))?.SetValue(builder.Context,
diff --git a/frontend/viewer/src/lib/dotnet-types/generated-types/FwLiteShared/Projects/ICombinedProjectsService.ts b/frontend/viewer/src/lib/dotnet-types/generated-types/FwLiteShared/Projects/ICombinedProjectsService.ts
index 394a30ec6..e25259e2a 100644
--- a/frontend/viewer/src/lib/dotnet-types/generated-types/FwLiteShared/Projects/ICombinedProjectsService.ts
+++ b/frontend/viewer/src/lib/dotnet-types/generated-types/FwLiteShared/Projects/ICombinedProjectsService.ts
@@ -9,8 +9,9 @@ import type {ILexboxServer} from '../Auth/ILexboxServer';
 
 export interface ICombinedProjectsService
 {
+	supportsFwData() : Promise<boolean>;
 	remoteProjects() : Promise<IServerProjects[]>;
-	localProjects() : IProjectModel[];
+	localProjects() : Promise<IProjectModel[]>;
 	downloadProject(lexboxProjectId: string, projectName: string, server: ILexboxServer) : Promise<void>;
 	createProject(name: string) : Promise<void>;
 }