Lost JavaScript support in VS2015 RTM after updating to TypeScript 1.5.4

[mwinkler]

I completely lost JavaScript support in Visual Studio after updating to TypeScript 1.5.4:

• Code inside script tags gets no colorization and no IntelliSense at all
• In the VS options menu > Text Editor > JavaScript is missing
• In the output console, the "JavaScript Language Service" is missing in the dropdown.

Seems I'm not the only one:
http://stackoverflow.com/questions/31888115/visual-studio-2015-rtm-lost-js-support-after-update-typesript-tools

[jonstelly]

Same. JavaScriptWebExtensionsPackage fails to load. ActivityLog.xml shows:

SetSite failed for package [JavaScriptWebExtensionsPackage]

[paulvanbrenk]

Does the IntelliSense work in a stand alone javascript file?

[mbraude]

Hi,

This is a known bug that we have fixed, however you could have been affected if you installed the "tools for universal apps development" during a specific period of time. There is a post on our MSDN forums with some steps, and we will soon be publishing a KB with the following workaround:

If the “Tools for Universal Windows Apps Development” are still installed:

1. Go to Programs and Features, select Visual Studio 2105, click Change.
2. In Visual Studio setup, click Modify.
3. Deselect the feature “Tools for Universal Windows App Development”
4. Select “Tools for Universal Windows App Development” again, and click Update.

If you have already uninstalled the “Tools for Universal Windows Apps Development”:

• Reinstall “Tools for Universal Windows App Development”
• Or, take the following steps to reinstall the JavaScript project system and language service:
  1. Download the installer for your edition of Visual Studio, e.g., vs_community.exe.
  2. Open a CMD window, and run the following command: vs_community.exe /modify /installselectableitems JavaScript_Hidden /passive

Sorry for the trouble. Hope that helps.

[sguryev]

Do you mean this option? That's what I have seen when have run the VS installer again (because I was not able to find VS2015 in the programs and features - Win 8.1 x64)

[mbraude]

Yep, that's it.

[sguryev]

After installing the missing Emulators for Windows Mobile 10.0.10240 I'm seeing the following:

Seems that it will work. Thank you!

UPD1: It works)

[mwinkler]

The re-installation of "Tools and Windows SDK 10.0.10240" brings back the JavaScript support and seems to work.

If i open a project, now i get this error:

In the log file, this exceptions appear:

707  Begin package load [Microsoft.VisualStudio.JSLS.JavaScriptLanguageServicePackage, Microsoft.VisualStudio.JSLS, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a] 

708  End package load [Microsoft.VisualStudio.JSLS.JavaScriptLanguageServicePackage, Microsoft.VisualStudio.JSLS, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a] 

709 ERROR (2x times)
Microsoft.VisualStudio.Composition.CompositionFailedException: Expected 1 export(s) with contract name "Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.IReferencesFilePathProvider" but found 0 after applying applicable constraints. at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExports(ImportDefinition importDefinition) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExports[T,TMetadataView](String contractName, ImportCardinality cardinality) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExport[T,TMetadataView](String contractName) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExport[T](String contractName) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExport[T]() at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExportedValue[T]() at 
Microsoft.VisualStudio.ComponentModelHost.ComponentModel.GetService[T]() at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Shared.ComponentModelServiceProvider.GetService[T]() at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectData..ctor(IVsHierarchy project) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectData.<>c__DisplayClass31_0.<GetOrCreate>b__0() at 
Microsoft.VisualStudio.Utilities.PropertyCollection.GetOrCreateSingletonProperty[T](Object key, Func`1 creator) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectData.GetOrCreate(IVsHierarchy webProject, IWebProjectServices webProjectServices) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Commands.CommandFilter..ctor(ITextView textView) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Commands.WpfTextViewConnectionListener.HookupCommandFilter(IWpfTextView textView, IVsTextView textViewAdapter) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Commands.WpfTextViewConnectionListener.SubjectBuffersConnected(IWpfTextView textView, ConnectionReason reason, Collection`1 subjectBuffers) at Microsoft.VisualStudio.Text.Editor.Implementation.ConnectionManager.<>c__DisplayClass4_1.<.ctor>b__1() at 
Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)

711  Entering function CVsPackageInfo::HrInstantiatePackage 

712  Begin package load [CssPackage] 

713  End package load [CssPackage] 

714 ERROR (2x times)
Microsoft.VisualStudio.Composition.CompositionFailedException: Expected 1 export(s) with contract name "Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.IReferencesFilePathProvider" but found 0 after applying applicable constraints. at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExports(ImportDefinition importDefinition) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExports[T,TMetadataView](String contractName, ImportCardinality cardinality) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExport[T,TMetadataView](String contractName) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExport[T](String contractName) at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExport[T]() at 
Microsoft.VisualStudio.Composition.ExportProvider.GetExportedValue[T]() at 
Microsoft.VisualStudio.ComponentModelHost.ComponentModel.GetService[T]() at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Shared.ComponentModelServiceProvider.GetService[T]() at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectData..ctor(IVsHierarchy project) at Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectData.<>c__DisplayClass31_0.<GetOrCreate>b__0() at 
Microsoft.VisualStudio.Utilities.PropertyCollection.GetOrCreateSingletonProperty[T](Object key, Func`1 creator) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectData.GetOrCreate(IVsHierarchy webProject, IWebProjectServices webProjectServices) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Commands.CommandFilter..ctor(ITextView textView) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Commands.WpfTextViewConnectionListener.HookupCommandFilter(IWpfTextView textView, IVsTextView textViewAdapter) at 
Microsoft.VisualStudio.JavaScript.Web.Extensions.Commands.WpfTextViewConnectionListener.SubjectBuffersConnected(IWpfTextView textView, ConnectionReason reason, Collection`1 subjectBuffers) at 
Microsoft.VisualStudio.Text.Editor.Implementation.ConnectionManager.<>c__DisplayClass7_0.<OnGraphBuffersChanged>b__0() at 
Microsoft.VisualStudio.Text.Utilities.GuardedOperations.CallExtensionPoint(Object errorSource, Action call)

[mbraude]

My guess is that only reinstalling the SDK didn't update the MEF cache. You can do this manually by following these steps:

1. Open a command prompt as administrator.
2. CD into C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE
3. Run devenv /updateconfiguration
4. Run devenv /clearcache

If that doesn't fix it, please redo the steps I outlined above, but toggle the outer 'Universal App Development Tools' as in the screenshot above - not just the SDK. If you don't want the emulators you should be able to uncheck that option afterwards.

[mwinkler]

@mbraude Thank you, /updateconfiguration & /clearcache worked, error is gone.

[jaliyaudagedara]

Faced the issue and got it fixed following the given steps.

Thanks.

[jonstelly]

After updating the windows universal app development tools, I was still getting the same error. I had to delete the directory: %localappdata%\Microsoft\VisualStudio\14.0\ComponentModelCache

Everything seems to be working again. Thanks.

[jamesxv7]

Хорошо иметь Google Translate близ.

[DanielRosenwasser]

@YuryStrozhevsky @sguryev could you limit discussion to English and keep things on topic with the issue? Translators only go so far, so it's difficult for most of us on the team to follow. 😄

[asiridissa]

Faced this issue and fixed now..
Thanks.

[maiorfi]

Same stuff after latest TypeScript update: same solution suggested worked for me, too.

[jerriep]

Great, doing the devenv /updateconfiguration and devenv /clearcache finally solved it for me after weeks of frustration

[migajek]

Hi, I'm having similar issue, i.e. opening any TypeScript file in VS2015 (TS 1.5.4.0) causes the error which is followed by automatic VS restart.
The thing is I haven't installed any of the Universal Windows App Dev Tools at all.

I've also tried updateconfiguration and clearcache, no luck ufortunately

System.Runtime.InteropServices.COMException (0x80020006): Nieznana nazwa. (Exception from HRESULT: 0x80020006 (DISP_E_UNKNOWNNAME))
   at 
System.RuntimeType.InvokeDispMethod(String name, BindingFlags invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers, Int32 culture, String[] namedParameters)
   at 
System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
   at 
Microsoft.CodeAnalysis.Editor.TypeScript.ScriptServices.Proxies.Reflection.InvokeMethod[T](Object languageService, String methodName, Object[] arguments)
   at 
Microsoft.CodeAnalysis.Editor.TypeScript.ScriptServices.Proxies.AbstractProxy`1.InvokeShimMethod[T](String methodName, Object[] arguments)
   at 
Microsoft.CodeAnalysis.Editor.TypeScript.ScriptServices.Proxies.ClassifierProxy.GetLexicalClassifications(String text, Int32 lexState)
   at 
Microsoft.CodeAnalysis.Editor.TypeScript.Features.Classifier.LexicalClassificationTaggerProvider.Classifier.GetLexicalClassifications(ClassifierProxy classifier, String text, Int32 lineNum)
   at 
Microsoft.CodeAnalysis.Editor.TypeScript.Features.Classifier.LexicalClassificationTaggerProvider.Classifier.GetClassifications(NormalizedSnapshotSpanCollection spans, List`1 result)
   at 
Microsoft.CodeAnalysis.Editor.TypeScript.Features.Classifier.LexicalClassificationTaggerProvider.Classifier.GetTags(NormalizedSnapshotSpanCollection spans)
   at 
Microsoft.VisualStudio.Text.Tagging.Implementation.TagAggregator`1.<GetTagsForBuffer>d__38.MoveNext()

[mbraude]

@migajek - I'm sorry for your trouble but this sounds like a different problem than what's discussed in this issue.

[migajek]

@mbraude ok I've created #4752
thank you!

[timothyleerussell]

@mbraude Thanks a lot!

I didn't have to do the uninstall / reinstall. Just the /updateconfiguration and /clearcache switches.

Fixed other problems for me as well, so bonus! Recent projects now show up in the recent projects list and my source control plugin now correctly flags the solution node when its status changes.

[jimmymain]

This is still an issue with typescript 1.6.3.
I have removing and installing components for an hour now. This needs attention, it's wasting a lot of time.

[mbraude]

I'm sorry for your trouble @jimmymain, but I promise you the steps I outlined above will fix the issue. Please follow them exactly.

[asleight]

I'm having the same trouble with VS 2015 Community Edition with the same error in the ActivityLog.

1. Running the Modify cycle on VS 2015 doesn't solve the problem.
2. Running the devenv /updateconfiguration does nothing. At all. It ignores the argument and doesn't start VS. (Note: It will start normally if I drop the argument and just type "devenv", and "devenv /?" produces arguments that only deal with Solution files.)

It may be worth noting that my installation is at C:\Program Files (x86)\Visual Studio Community 2015\Common7\IDE (my Visual Studio 14.0 directory is there, but virtually empty).

I wasn't sure whether one of these two things is causing a unique situation, but it's quite frustrating! I want to push my (small) organization to use .NET 5.0 instead of Java for website building, and these issues are worrying. I don't want the general feel of .NET 5.0 to be "neat idea, but it's a pain to get it working properly".

Edit: On a whim, I tried jonstelly's suggestion of deleting %localappdata%\Microsoft\VisualStudio\14.0\ComponentModelCache folder, and that seems to solve the issue. It's worth noting that the two "approved" fixes didn't fix my issue, and this third one did the trick.

[paulvanbrenk]

@asleight where did you get the VS2015 Community Edition from, I've been running that and it consistently get's installed in the VS 14 folder.

Glad you got the issue re-solved.

[artganify]

Having still the same issue, and it comes up again with every new TS update.

Could not load file or assembly 'Microsoft.VisualStudio.JSLS, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.

My problem is that I can only fix it temporary. After a while, it pops up again and I have to go through all provided solutions again.

What doesn't work:

• devenv /updateconfiguration & devenv /clearcache
• Steps described here
• Deleting %localappdata%\Microsoft\VisualStudio\14.0\ComponentModelCache

What does work:

• Re-installing packages\JavaScript_LanguageService\JavaScript_LanguageService.msi and running devenv /Setup and devenv /ResetSkipPkgs afterwards

Again, those seem to be only temporary fixes. It works, I can create project files and classes and what not within VS, then suddenly the error appears again. One time I managed to completely resolve it, only to have it returned with the next TypeScript update.

[mbraude]

Hi @artganify. I'm sorry for your trouble. Unfortunately the steps you're following on stack overflow are wrong. They will fix the problem, but only temporality. The next time you do any setup action, such as installing a typescript update, it will revert the fix.

Please follow the steps I outlined above three months ago. They will fix the problem permanently.

[MayMih]

cmd switches for devenv.exe helps with the same problem on VS 2013 update 5 too. Thanks.
Nope, actually it helps just partially - Now there is no more warning message about JavaScript, but when I try to run project it crashes with Error like: "Exception raised. Probably caused by Extension".
And when I try to close IDE (even if I didn't open any project) it shows me Error like: "Can't load file or assembly VSPerfReader or one of it's dependencies. There is no assembly manifest in module."

Finally the only thing that helped me is uninstalling of Visual Studio 2013 SDK.

[dime2lo]

Followed the devenv /updateconfiguration & devenv /clearcache steps and it solved the issue for me. Thanks!

[daviatorstorm]

What is the exect problem with VS 2015 at all? Maybe if we can understand the main problem then we can understand how to solve it for all. And describe a problem for VS developer to create a update package that solves this problem.

[mhegazy]

@daviatorstorm, the issue was caused by multiple updated overwriting the JS package. it is not related ot the TypeScript update, it just happened around the time the TS update was released.
The steps outlined in #4238 (comment) should get you back to a working state.

[daviatorstorm]

I've discover a thing that if in referenced files in _references.js are errors - intellisense won't work.
By looking to (in my case) angular.js file, i found alot of errors. I`ve reinstalled a package and problem is gone. But i have the next issue.
Intellisense cannot found local fields from local file.

[mhegazy]

@daviatorstorm this has nothing to do with the OP. your JS intellesises seems to be loaded just fine. please file a different issue for the JS intellisense at https://visualstudio.uservoice.com/forums/121579-visual-studio-2015

[lucavgobbi]

@mbraude suggestion worked for me on 1.8.11