[microservices][Kafka] Empty postfixId not working for ClientKafka

[quaos]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

Referring to #9677

on the Client side of microservices module, providing postfixId options as empty string still results in -client postfix after the client ID and consumer group ID.

I found this related line:
d88b920#diff-dfaf9025d840c609351b76ce88dbb871cd6b9aca0d552185db8a0cccd28324beR100

Minimum reproduction code

https://codesandbox.io/p/sandbox/test-nest-microservices-client-postfixid-ssmgcw?welcome=true

Steps to reproduce

No response

Expected behavior

Should be able to provide the ClientKafka without default postfix of -client in clientId and groupId

Package

• I don't know. Or some 3rd-party package
• @nestjs/common
• @nestjs/core
• @nestjs/microservices
• @nestjs/platform-express
• @nestjs/platform-fastify
• @nestjs/platform-socket.io
• @nestjs/platform-ws
• @nestjs/testing
• @nestjs/websockets
• Other (see below)

Other package

No response

NestJS version

9.4.1

Packages versions

{
  "dependencies": {
    "@nestjs/common": "^9.4.1",
    "@nestjs/config": "^2.3.2",
    "@nestjs/core": "^9.4.1",
    "@nestjs/microservices": "9.4.1",
    "@nestjs/platform-express": "^9.4.1",
    "kafkajs": "^2.2.4",
    "reflect-metadata": "^0.1.13",
    "rimraf": "^3.0.2",
    "run-script-webpack-plugin": "0.0.11",
    "rxjs": "^7.4.0",
    "webpack": "5.70.0"
  },
  "devDependencies": {
    "@nestjs/cli": "^8.1.3",
    "@nestjs/schematics": "^9.0.0",
    "@nestjs/testing": "^9.0.0",
    "@types/express": "^4.17.13",
    "@types/jest": "^29.0.0",
    "@types/node": "^16.11.1",
    "@types/supertest": "^2.0.11",
    "@typescript-eslint/eslint-plugin": "^4.29.2",
    "@typescript-eslint/parser": "^4.29.2",
    "eslint": "^7.32.0",
    "eslint-config-prettier": "^8.3.0",
    "eslint-plugin-prettier": "^3.4.1",
    "jest": "^29.0.0",
    "prettier": "^2.4.1",
    "source-map-support": "^0.5.20",
    "supertest": "^6.1.6",
    "ts-jest": "^29.0.0",
    "ts-loader": "^9.2.6",
    "ts-node": "^10.3.0",
    "tsconfig-paths": "^3.11.0",
    "typescript": "^4.4.4"
  }
}

Node.js version

v16.17.0

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[kamilmysliwiec]

This is going to change in v10 #10549