diff --git a/src/modules/Elsa.JavaScript/Providers/VariableTypeDefinitionProvider.cs b/src/modules/Elsa.JavaScript/Providers/VariableTypeDefinitionProvider.cs
index a5888b87b..743ee22a8 100644
--- a/src/modules/Elsa.JavaScript/Providers/VariableTypeDefinitionProvider.cs
+++ b/src/modules/Elsa.JavaScript/Providers/VariableTypeDefinitionProvider.cs
@@ -1,36 +1,38 @@
 using System.Dynamic;
-using Elsa.Extensions;
 using Elsa.JavaScript.TypeDefinitions.Abstractions;
 using Elsa.JavaScript.TypeDefinitions.Contracts;
 using Elsa.JavaScript.TypeDefinitions.Models;
+using Elsa.Workflows.Management.Options;
+using JetBrains.Annotations;
+using Microsoft.Extensions.Options;
 
 namespace Elsa.JavaScript.Providers;
 
 /// <summary>
 /// Produces <see cref="TypeDefinition"/>s for variable types.
 /// </summary>
-internal class VariableTypeDefinitionProvider(ITypeDescriber typeDescriber) : TypeDefinitionProvider
+[UsedImplicitly]
+internal class VariableTypeDefinitionProvider(ITypeDescriber typeDescriber, IOptions<ManagementOptions> options) : TypeDefinitionProvider
 {
     protected override IEnumerable<TypeDefinition> GetTypeDefinitions(TypeDefinitionContext context)
     {
         var excludedTypes = new Func<Type, bool>[]
         {
             type => type == typeof(ExpandoObject),
-            type => typeof(IDictionary<string, object>).IsAssignableFrom(type),
-            type => type == typeof(object)
+            type => type.IsPrimitive,
+            type => type.ContainsGenericParameters,
+            type => type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IDictionary<,>),
+            type => type == typeof(object),
+            type => type == typeof(string)
         };
 
-        var variables = context.WorkflowGraph.Workflow.Variables;
-
-        var variableTypeQuery =
-            from variable in variables
-            let variableType = variable.GetVariableType()
-            where (variableType.IsClass || variableType.IsInterface || variableType.IsEnum) && !variableType.IsPrimitive && !excludedTypes.Any(x => x(variableType))
+        var variableTypes =
+            from variableDescriptor in options.Value.VariableDescriptors
+            let variableType = variableDescriptor.Type
+            where (variableType.IsClass || variableType.IsInterface || variableType.IsEnum) && !excludedTypes.Any(x => x(variableType))
             select variableType;
 
-        var variableTypes = variableTypeQuery.Distinct();
-
-        foreach (var variableType in variableTypes)
+        foreach (var variableType in variableTypes.Distinct())
         {
             yield return typeDescriber.DescribeType(variableType);
         }
diff --git a/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDefinitionDocumentRenderer.cs b/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDefinitionDocumentRenderer.cs
index f5699e6f5..04b22f103 100644
--- a/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDefinitionDocumentRenderer.cs
+++ b/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDefinitionDocumentRenderer.cs
@@ -58,7 +58,7 @@ public class TypeDefinitionDocumentRenderer : ITypeDefinitionDocumentRenderer
     }
 
     private void Render(PropertyDefinition property, StringBuilder output) => output.AppendLine($"{property.Name}{(property.IsOptional ? "?" : "")}: {property.Type};");
-    private void RenderEnumMember(PropertyDefinition property, StringBuilder output) => output.AppendLine($"{property.Name} = \"{property.Name}\";");
+    private void RenderEnumMember(PropertyDefinition property, StringBuilder output) => output.AppendLine($"{property.Name} = \"{property.Name}\",");
     private void Render(VariableDefinition variable, StringBuilder output) => output.AppendLine($"declare var {variable.Name}: {variable.Type};");
     string RenderParameter(ParameterDefinition parameter) => $"{parameter.Name}{(parameter.IsOptional ? "?" : "")}: {parameter.Type}";
     string RenderParameters(IEnumerable<ParameterDefinition> parameters) => string.Join(", ", parameters.Select(RenderParameter));
diff --git a/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDescriber.cs b/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDescriber.cs
index af4a85b74..fe699b6a9 100644
--- a/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDescriber.cs
+++ b/src/modules/Elsa.JavaScript/TypeDefinitions/Services/TypeDescriber.cs
@@ -1,5 +1,6 @@
 using System.Diagnostics.CodeAnalysis;
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using Elsa.Extensions;
 using Elsa.JavaScript.Contracts;
 using Elsa.JavaScript.TypeDefinitions.Contracts;
@@ -40,7 +41,10 @@ public class TypeDescriber : ITypeDescriber
             yield break;
         
 #pragma warning disable IL2070
-        var methods = type.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static).Where(x => !x.IsSpecialName).ToList();
+        var methods = type.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static)
+            .Where(x => !x.IsSpecialName)
+            .Where(x => x.GetCustomAttribute<CompilerGeneratedAttribute>() == null)
+            .ToList();
 #pragma warning restore IL2070
 
         foreach (var method in methods)