JavaScriptEngineSwitcher.V8 latest version uses the ClearScript dll whose publickey token is not matching the one that is in the manifest

[github-prometheus]

Hi Taritsyn,

I added the JavaScriptEngineSwitcher.V8 nuget package version 2.4.0 to my asp.net mvc4 application and made necessary changes in the Global.asax.cs file and also in the web.config but when I run my application, I am getting the error as

System.IO.FileLoadException: Could not load file or assembly 'ClearScript, Version=5.4.9.0, Culture=neutral, PublicKeyToken=935d0c957da47c73' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
   at JavaScriptEngineSwitcher.V8.V8JsEngine.LoadUndefinedValue()
   at JavaScriptEngineSwitcher.V8.V8JsEngine..cctor()

Here I noticed the thing that the public key token 935d0c957da47c73 is coressponds to the ClearScript version 5.4.7

If I install the JavaScriptEngineSwitcher.V8 nuget package version 2.1.0, the application runs fine since it finds the correct version of the ClearScript.

Can you please confirm if this is a potential bug that might have been caused while publishing nuget package? Please find the attached screenshots that corresponds to the public key token of the ClearScript.dll version 5.4.9 and 5.4.7 respectively.

Thanks,
Pramod

[Taritsyn]

Hello, Pramod!

Are you using the ClearScript.V8 package?

[github-prometheus]

yes

[Taritsyn]

You can not install the JavaScriptEngineSwitcher.V8 and ClearScript.V8 packages together. Both projects contain their own versions of assemblies, which signed by own keys. By the way, ClearScript.V8 package is unofficial. In general, Microsoft does not have an official NuGet package for the ClearScript library, and everyone builds the ClearScript on their own.

Uninstall the ClearScript.V8 package and read the “JS Engine Switcher: V8” section of documentation.

[github-prometheus]

Ok. Uninstalling the clearscript will add the required assemblies in the bin folder ?
Currently I am adding those native dlls using a post build event.

[Taritsyn]

Uninstalling the clearscript will add the required assemblies in the bin folder ?

Have you read the “JS Engine Switcher: V8” section of documentation? Or at least the JavaScriptEngineSwitcher.V8 package description?

[github-prometheus]

Yes I installed those packages as well. Also I have installed the vc++ redist. 2015

[Taritsyn]

Currently I am adding those native dlls using a post build event.

You just need to install the JavaScriptEngineSwitcher.V8.Native.win-x86 and/or JavaScriptEngineSwitcher.V8.Native.win-x64 packages.

[Taritsyn]

Yes I installed those packages as well. Also I have installed the vc++ redist. 2015

Then should all work correctly. If it doesn't work, then clean your project from garbage: the ClearScript.V8 package artifacts and custom post build events.

[github-prometheus]

Hi Taritsyn,

Following your steps enabled the local application to run successfully but when deployed to the server, The folders X86 and x64 folders didnt get created in the websites bin folder but a ClearScript folder got generated in the in project folder and I am getting the same error.

Just to be clear, does the ClearScript.V8 folder gets created in the project folder ?

Thanks
Pramod

[Taritsyn]

Since version 2.0 the ClearScript.V8 directory is not created. Assemblies are copied by using MSBuild scripts to x86 and x64 subdirectories of bin\[Debug|Release] directory (for web applications just bin directory).

[github-prometheus]

So Andrey please correct me if I am wrong : for web application the ClearScript.V8 directory does not get created and the dlls directly get copied to bin/x86 and bin/x64 respectively. In my local I can observe the changes but in remote server its getting created. I am using bamboo to create the installer.

…

On Thu, May 11, 2017 at 11:02 PM, Andrey Taritsyn ***@***.***> wrote: Since version 2.0 the ClearScript.V8 directory is not created. Assemblies are copied by using MSBuild scripts to x86 and x64 subdirectories of bin\[Debug|Release] directory (for web applications just bin directory). — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#29 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AbS-x3nydMdAz_Wv9vHaU6THvN_h6wkTks5r40Y2gaJpZM4NXyZ3> .

[Taritsyn]

So Andrey please correct me if I am wrong : for web application the ClearScript.V8 directory does not get created and the dlls directly get copied to bin/x86 and bin/x64 respectively.

Yes, that's right.

In my local I can observe the changes but in remote server its getting created. I am using bamboo to create the installer.

In this matter I can not help you. Check your installer or deployment scripts.

[github-prometheus]

Thanks Andrey I will check that.

[github-prometheus]

I added those assemblies as link in root project directory