Recieving "Can't resolve all parameters for HttpXsrfCookieExtractor" after you add some files to the app folder. (Angular)

[elAndyG]

I've tried multiple projects in both VS Code using the dotnet new, as well as the Visual Studio 2017 Angular templates for Angular. Once i begin adding new files to the app folder, it seems fine and hot modules properly. But once i stop the build and start it again, I receive the following error:

NodeInvocationException: Can't resolve all parameters for HttpXsrfCookieExtractor: (?, [object Object], [object Object]).
Error: Can't resolve all parameters for HttpXsrfCookieExtractor: (?, [object Object], [object Object]).
at Error (native)
at syntaxError (C:\toolkit3\ClientApp\dist\vendor.js:37092:34)
at CompileMetadataResolver.module.exports.CompileMetadataResolver._getDependenciesMetadata (C:\dummy\ClientApp\dist\vendor.js:51159:35)
at CompileMetadataResolver.module.exports.CompileMetadataResolver._getTypeMetadata (C:\dummy\ClientApp\dist\vendor.js:51027:26)
at CompileMetadataResolver.module.exports.CompileMetadataResolver._getInjectableMetadata (C:\dummy\ClientApp\dist\vendor.js:51013:21)
at CompileMetadataResolver.module.exports.CompileMetadataResolver.getProviderMetadata (C:\dummy\ClientApp\dist\vendor.js:51304:40)
at C:\dummy\ClientApp\dist\vendor.js:51233:49
at Array.forEach (native)
at CompileMetadataResolver.module.exports.CompileMetadataResolver._getProvidersMetadata (C:\dummy\ClientApp\dist\vendor.js:51193:19)
at CompileMetadataResolver.module.exports.CompileMetadataResolver.getNgModuleMetadata (C:\dummy\ClientApp\dist\vendor.js:50848:50)
Microsoft.AspNetCore.NodeServices.HostingModels.HttpNodeInstance+d__7.MoveNext()

**Is there something with webpack that i need to reset, or does this seem like a bug? **

Steps to reproduce:

1. cmd to c:\
2. dotnet --version
   2.0.0
3. mkdir dummy
4. cd dummy
5. dotnet new angular
6. dotnet restore
7. npm install
8. dotnet run

start copying or adding files into the app/ folder.

kill the build

trigger dotnet run again...

I think i've done 5 straight new projects and have been able to reproduce it each time. Please let me know if i can supply you with any additional information.

[elAndyG]

I did some more research, and it looks like it cannot update to version 4.3.0+ (currently trying to update to 4.3.6.) so if you update the @angular items in package config to 4.3.6 this error will immediately trigger. It also refers to this module here. https://angular.io/api/common/http/HttpClientXsrfModule.

I will move this issue over to the aspnet/templates sp please feel free to close this ticket as i believe i reported this in the wrong area.

[Trapulo]

same problem

Writing some code with angular and .NET is really an hell

[andrei-ga]

Indeed, at mostly every upgrade there are breaking changes.

[SteveSandersonMS]

Thanks for letting us know.

start copying or adding files into the app/ folder.

Which specific files should you copy or add? Because adding arbitrary unrelated files to that dir doesn't have any effect.

Am I right in understanding that the real repro is "update Angular packages to 4.3.0+"? If so, we certainly will be updating the templates to 4.3.0+ at some point, but until then we can't guarantee compatibility with arbitrary future Angular versions because they can introduce breaking changes at any time.

[andrei-ga]

We already managed to make it work. See aspnet/Templates#866

[SteveSandersonMS]

Glad to hear it.