Merge pull request #19357 from CyrusNajmabadi/noTypeScriptIndices

Do not even attempt to create indices for non-C#/VB projects.

src/Features/Core/Portable/IncrementalCaches/SymbolTreeInfoIncrementalAnalyzerProvider.cs

@@ -4,7 +4,6 @@
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Composition;
-using System.IO;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
@@ -13,7 +12,6 @@
 using Microsoft.CodeAnalysis.Host;
 using Microsoft.CodeAnalysis.Host.Mef;
 using Microsoft.CodeAnalysis.NavigateTo;
-using Microsoft.CodeAnalysis.Shared.Utilities;
 using Microsoft.CodeAnalysis.SolutionCrawler;
 using Roslyn.Utilities;
 
@@ -181,6 +179,12 @@ public override Task AnalyzeProjectAsync(Project project, bool semanticsChanged,
 
             private async Task UpdateSymbolTreeInfoAsync(Project project, CancellationToken cancellationToken)
             {
+                if (!project.SupportsCompilation)
+                {                    
+                    // Not a language we can produce indices for (i.e. TypeScript).  Bail immediately.
+                    return;
+                }
+
                 if (project.Solution.Workspace.Kind != "Test" &&
                     project.Solution.Workspace.Kind != WorkspaceKind.RemoteWorkspace &&
                     project.Solution.Workspace.Options.GetOption(NavigateToOptions.OutOfProcessAllowed))

src/Features/Core/Portable/IncrementalCaches/SyntaxTreeInfoIncrementalAnalyzerProvider.cs

@@ -21,6 +21,12 @@ private class IncrementalAnalyzer : IncrementalAnalyzerBase
         {
             public override Task AnalyzeSyntaxAsync(Document document, InvocationReasons reasons, CancellationToken cancellationToken)
             {
+                if (!document.SupportsSyntaxTree)
+                {
+                    // Not a language we can produce indices for (i.e. TypeScript).  Bail immediately.
+                    return SpecializedTasks.EmptyTask;
+                }
+
                 if (document.Project.Solution.Workspace.Kind != WorkspaceKind.RemoteWorkspace &&
                     document.Project.Solution.Workspace.Options.GetOption(SymbolFinderOptions.OutOfProcessAllowed))
                 {