Where can I find the TypeScript version installed in Visual Studio?

Two years after the question was asked, using Visual Studio Command Prompt still did not produce right answer for me. But the usual Help|About window seems working these days:

UPDATE (June 2017):

1. VS 2013 does NOT show this info. (Later note: VS 2017 Enterprise edition does not show this info either).

2. VS uses Microsoft Build Engine (MSBuild) to compile Typescript files. MSBuild can support several major releases of Typescript, but About window shows only the latest one.

Here is how to get to the bottom of it:

A. To check which versions of Typescript are installed with your Visual Studio/MSBuild, inspect contents of C:\Program Files (x86)\Microsoft SDKs\TypeScript folder. For example, I have versions 1.0, 1.8 and 2.2:

B. Check which version of Typescript is requested by your project. In *.csproj file, look for <TypeScriptToolsVersion> tag, or you can add it if it is missing, like this

    <PropertyGroup> 
        ...
        <TypeScriptToolsVersion>1.8</TypeScriptToolsVersion>
        ...
    </PropertyGroup>

C. Finally, you can check, which version of Typescript is actually used by MSBuild. In TOOLS | Options | Projects and Solutions | Build and Run set MSBuild project output verbosity to Detailed:

Then build your project and inspect the output: you should see the reference to one of Typescript folders described in (A).

Based in the response of basarat, I give here a little more information how to run this in Visual Studio 2013.

• Go to Windows Start button -> All Programs -> Visual Studio 2013 -> Visual Studio Tools A windows is open with a list of tool.

• Select Developer Command Prompt for VS2013
• In the opened Console write: tsc -v
• You get the version: See Image

[UPDATE]

If you update your Visual Studio to a new version of Typescript as 1.0.x you don't see the last version here. To see the last version:

• Go to: C:\Program Files (x86)\Microsoft SDKs\TypeScript, there you see directories of type 0.9, 1.0 1.1
• Enter the high number that you have (in this case 1.1)
• Copy the directory and run in CMD the command tsc -v, you get the version.

NOTE: Typescript 1.3 install in directory 1.1, for that it is important to run the command to know the last version that you have installed.

NOTE: It is possible that you have installed a version 1.3 and your code use 1.0.3. To avoid this if you have your Typescript in a separate(s) project(s) unload the project and see if the Typescript tag:

<TypeScriptToolsVersion>1.1</TypeScriptToolsVersion> 

is set to 1.1.

[UPDATE 2]

TypeScript version 1.4, 1.5 .. 1.7 install in 1.4, 1.5... 1.7 directories. they are not problem to found version. if you have typescript in separate project and you migrate from a previous typescript your project continue to use the old version. to solve this:

unload the project file and change the typescript version to 1.x at:

  <TypeScriptToolsVersion>1.x</TypeScriptToolsVersion>

If you installed the typescript using the visual studio installer file, the path to the new typescript compiler should be automatically updated to point to 1.x directory. If you have problem, review that you environment variable Path include

C:\Program Files (x86)\Microsoft SDKs\TypeScript\1.x\

SUGGESTION TO MICROSOFT :-) Because Typescript run side by side with other version, maybe is good to have in the project properties have a combo box to select the typescript compiler (similar to select the net version)

If you only have TypeScript installed for Visual Studio then:

1. Start the Visual Studio Command Prompt
2. Type tsc -v and hit Enter

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Visual Studio 2017 versions 15.3 and above bind the TypeScript version to individual projects, as this answer points out:

1. Right click on the project node in Solution Explorer
2. Click Properties
3. Go to the TypeScript Build tab