Directives missing in SDL

[carnun]

Describe the Bug
When I generate the SDL from a set of resolvers which use the @ Directive decorator the directives do not appear in the SDL. I see similar behaviour when running a live graphql server.

I'm not sure whether this is a bug, or whether this is the intended behavior since I couldn't deduce from https://typegraphql.com/docs/directives.html whether directives are supported in the SDL generated by type-graphql, in which case #965 may help clarify. Otherwise it could related to the original issue reported as graphql/graphql-js#1343.

PS: the reason I'm looking for this functionality is so that I can eventually integrate more seamlessly with Apigee which uses a @scope directive to generated the authentication config - https://github.com/apigee/graphql-authz.

To Reproduce
Compile and run the following code

// test.ts
import 'reflect-metadata'
import { buildSchemaSync, ObjectType, Field, Resolver, Query, Directive } from 'type-graphql'
import path from 'path'

@ObjectType()
class Config {
  @Field()
  VERSION: string
}

@Resolver(() => Config)
class ConfigResolver {
  @Directive('@auth(requires: USER)')
  @Query(() => Config)
  getConfig(): Config {
    return {
      VERSION: '1.0.0',
    }
  }
}

const fullSchemaPath = path.resolve(__dirname, './test.graphql')
buildSchemaSync({
  resolvers: [ConfigResolver],
  emitSchemaFile: fullSchemaPath,
})
console.log(`Generated full schema - ${fullSchemaPath}`)

The text.graphql file has the following contents

# -----------------------------------------------
# !!! THIS FILE WAS GENERATED BY TYPE-GRAPHQL !!!
# !!!   DO NOT MODIFY THIS FILE BY YOURSELF   !!!
# -----------------------------------------------

type Config {
  VERSION: String!
}

type Query {
  getConfig: Config!
}

Expected Behavior
I would expect the file contents to contain the directive, e.g.

type Query @auth(requires: USER) {
  getConfig: Config!
}

Logs
N/A

Environment:

• OS: MacOS 11.4
• Node v12.22.1
• Package version 1.1.1
• TypeScript version 4.3.5

[MichalLytek]

Please read the docs more carefully: