[BUG][NODEJS] graphql-nodejs-express-server with PetStore, only one type named "User"

Description

When generating and running the PetStore demo with graphql-nodejs-express-server you get the error:

Error: There can be only one type named "User".
Field "User.id" can only be defined once.
Field "User.firstName" can only be defined once.
Field "User.lastName" can only be defined once.

This errors and prevents the server from running.

openapi-generator version

"@openapitools/openapi-generator-cli": "^1.0.15-4.3.1"

OpenAPI declaration file content or url

Using: https://petstore.swagger.io/v2/swagger.yaml

definitions:
  User:
    type: "object"
    properties:
      id:
        type: "integer"
        format: "int64"
      username:
        type: "string"
      firstName:
        type: "string"
      lastName:
        type: "string"
      email:
        type: "string"
      password:
        type: "string"
      phone:
        type: "string"
      userStatus:
        type: "integer"
        format: "int32"
        description: "User Status"
    xml:
      name: "User"

Command line used for generation

npx @openapitools/openapi-generator-cli generate -i https://petstore.swagger.io/v2/swagger.yaml -g graphql-nodejs-express-server -o .

Steps to reproduce

npm install @openapitools/openapi-generator-cli
npx @openapitools/openapi-generator-cli generate -i https://petstore.swagger.io/v2/swagger.yaml -g graphql-nodejs-express-server -o .
cd openapi3graphql-server
npm install
npm start

Related issues/PRs

not found any similar

Suggest a fix

Changing the petstore.yaml User type to User2 fixes the issue

• User: to User2:
• name: "User" to name: "User2"
• #/definitions/User to #/definitions/User2

It seems to be a conflict with the name type User is it a reserved type?

EDIT: Also just noticed it creates a subfolder openapi3graphql-server when the other generators do not

Start by running the documented graphql-nodejs-express-server generation command with the PetStore swagger.yaml, then inspect the generated schema and server startup output for duplicate User definitions. Trace where the User type is emitted and verify the generated server starts without duplicate-type errors while preserving the PetStore models and references.