Export the SuggestedActionsSourceProvider for specific langauges.

src/EditorFeatures/Core/ContentTypeNames.cs

@@ -10,5 +10,7 @@ internal static class ContentTypeNames
         public const string VisualBasicContentType = "Basic";
         public const string VisualBasicSignatureHelpContentType = "Basic Signature Help";
         public const string XamlContentType = "XAML";
+        public const string JavaScriptContentTypeName = "JavaScript";
+        public const string TypeScriptContentTypeName = "TypeScript";
     }
 }

src/EditorFeatures/Core/Implementation/Suggestions/SuggestedActionsSourceProvider.cs

@@ -36,7 +36,10 @@ namespace Microsoft.CodeAnalysis.Editor.Implementation.Suggestions
 
     [Export(typeof(ISuggestedActionsSourceProvider))]
     [Export(typeof(SuggestedActionsSourceProvider))]
-    [VisualStudio.Utilities.ContentType(ContentTypeNames.RoslynContentType)]
+    [VisualStudio.Utilities.ContentType(ContentTypeNames.CSharpContentType)]
+    [VisualStudio.Utilities.ContentType(ContentTypeNames.VisualBasicContentType)]
+    [VisualStudio.Utilities.ContentType(ContentTypeNames.JavaScriptContentTypeName)]
+    [VisualStudio.Utilities.ContentType(ContentTypeNames.TypeScriptContentTypeName)]
     [VisualStudio.Utilities.ContentType(ContentTypeNames.XamlContentType)]
     [VisualStudio.Utilities.Name("Roslyn Code Fix")]
     [VisualStudio.Utilities.Order]