The @SubscribeMessage decorator only applies to incoming events. When returning data, it does not automatically configure the corresponding event for the outgoing message.

Is there an existing issue for this?

[X] I have searched the existing issues

Current behavior

After I generated a basic gateway using the scaffold and started using it, the value returned was not transmitted to the client. Upon debugging, I noticed that the final emit did not include the event specified by the decorator, forcing me to specify again which event to return.

after compatibilizing

So I wonder, is it my misuse or misunderstanding of decorators, or is there another default way to use return? Or is it a bug?

Minimum reproduction code

https://stackblitz.com/edit/nestjs-typescript-starter-ssx8xf?file=src%2Fws%2Fws.gateway.ts

Steps to reproduce

npm i
npm start
ts-node client.ts
watch and edit file ws.gateway.ts
see error: When default code is used, the client cannot receive the returned message content.

Expected behavior

After the @SubscribeMessage decorator specifies the event, I don't have to explicitly indicate the event again with the @WsResponse decorator for the responding return.

Package

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

Other package

No response

NestJS version

10.3.10

Packages versions

{
  "name": "websocket-sample",
  "version": "0.0.1",
  "description": "",
  "author": "",
  "private": true,
  "license": "UNLICENSED",
  "scripts": {
    "build": "nest build",
    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
    "start": "nest start",
    "start:dev": "nest start --watch",
    "start:debug": "nest start --debug --watch",
    "start:prod": "node dist/main",
    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
    "test": "jest",
    "test:watch": "jest --watch",
    "test:cov": "jest --coverage",
    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
    "test:e2e": "jest --config ./test/jest-e2e.json",
    "prepare": "husky"
  },
  "dependencies": {
    "@nestjs/common": "^10.0.0",
    "@nestjs/config": "^3.2.3",
    "@nestjs/core": "^10.0.0",
    "@nestjs/platform-express": "^10.0.0",
    "@nestjs/platform-socket.io": "^10.3.10",
    "@nestjs/websockets": "^10.3.10",
    "reflect-metadata": "^0.2.0",
    "rxjs": "^7.8.1"
  },
  "devDependencies": {
    "@commitlint/cli": "^19.3.0",
    "@commitlint/config-conventional": "^19.2.2",
    "@jest/globals": "^29.7.0",
    "@nestjs/cli": "^10.0.0",
    "@nestjs/schematics": "^10.0.0",
    "@nestjs/testing": "^10.0.0",
    "@types/express": "^4.17.17",
    "@types/jest": "^29.5.12",
    "@types/node": "^20.3.1",
    "@types/supertest": "^6.0.0",
    "@typescript-eslint/eslint-plugin": "^7.0.0",
    "@typescript-eslint/parser": "^7.0.0",
    "commitizen": "^4.3.0",
    "cz-conventional-changelog": "^3.3.0",
    "eslint": "^8.42.0",
    "eslint-config-prettier": "^9.0.0",
    "eslint-plugin-prettier": "^5.0.0",
    "husky": "^9.0.11",
    "jest": "^29.5.0",
    "lint-staged": "^15.2.7",
    "prettier": "^3.0.0",
    "source-map-support": "^0.5.21",
    "supertest": "^7.0.0",
    "ts-jest": "^29.2.0",
    "ts-loader": "^9.4.3",
    "ts-node": "^10.9.1",
    "tsconfig-paths": "^4.2.0",
    "typescript": "^5.1.3"
  },
  "jest": {
    "moduleFileExtensions": [
      "js",
      "json",
      "ts"
    ],
    "rootDir": "src",
    "testRegex": ".*\\.spec\\.ts$",
    "transform": {
      "^.+\\.(t|j)s$": "ts-jest"
    },
    "collectCoverageFrom": [
      "**/*.(t|j)s"
    ],
    "coverageDirectory": "../coverage",
    "testEnvironment": "node"
  },
  "lint-staged": {
    "*.{js,jsx,ts,tsx}": [
      "prettier --ignore-path .gitignore --write"
    ],
    "*.json,.{eslintrc,prettierrc}": [
      "prettier --ignore-path .gitignore --parser json --write"
    ],
    "*.{html,md,yml}": [
      "prettier --ignore-path .gitignore --single-quote --write"
    ]
  },
  "config": {
    "commitizen": {
      "path": "./node_modules/cz-conventional-changelog",
      "types": {
        "feat": {
          "title": "新功能",
          "description": "新功能"
        },
        "fix": {
          "title": "问题修复",
          "description": "问题修复"
        },
        "docs": {
          "title": "文档更新",
          "description": "文档更新"
        },
        "style": {
          "title": "格式优化",
          "description": "格式优化"
        },
        "refactor": {
          "title": "代码重构",
          "description": "代码重构"
        },
        "perf": {
          "title": "性能优化",
          "description": "性能优化"
        },
        "test": {
          "title": "测试更新",
          "description": "测试更新"
        },
        "build": {
          "title": "项目工具",
          "description": "项目工具"
        },
        "ci": {
          "title": "CI配置",
          "description": "CI配置"
        },
        "chore": {
          "title": "杂项",
          "description": "杂项"
        },
        "revert": {
          "title": "回退",
          "description": "回退"
        }
      }
    }
  }
}

Node.js version

v20.15.0

In which operating systems have you tested?

[X] macOS
[ ] Windows
[ ] Linux

Other

No response

nestjs / nest