12.0.9 breaking schema generation of DateTime DateTimeISO

[sschneider-ihre-pvs]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

When trying to start a graphql server with nest I know get the following error

Error: Schema must contain uniquely named types but contains multiple types named "DateTimeISO".
at new GraphQLSchema (<ProjectRoot>\node_modules\graphql\type\schema.js:219:15)
at mapSchema (<ProjectRoot>\node_modules\@nestjs\graphql\node_modules\@graphql-tools\utils\cjs\mapSchema.js:14:12)
at createNewSchemaWithResolvers (<ProjectRoot>\node_modules\@nestjs\graphql\node_modules\@graphql-tools\schema\cjs\addResolversToSchema.js:191:36)

Minimum reproduction code

null

Steps to reproduce

1. add graphql scalars datetime: datetimeisoresolver
2. try to start nest app

Expected behavior

Startup and Schema works as before

Package version

12.0.9

Graphql version

graphql:
apollo-server-express:
apollo-server-fastify:

NestJS version

No response

Node.js version

No response

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[kamilmysliwiec]

Please provide a minimum reproduction repository (Git repository/StackBlitz/CodeSandbox project).