Hot reload does not work properly

[coderlzw-cn]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

Kapture.2025-03-24.at.10.15.28.mp4

Minimum reproduction code

https://stackblitz.com/edit/nestjs-typescript-starter-7hmvnlhs?file=src%2Fmain.ts

Steps to reproduce

https://docs.nestjs.com/recipes/hot-reload

Expected behavior

How should I implement hot reload and ensure that the service is accessible

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

11.0.1

Packages versions

  "dependencies": {
    "@nestjs/common": "^11.0.1",
    "@nestjs/core": "^11.0.1",
    "@nestjs/platform-express": "^11.0.1",
    "reflect-metadata": "^0.2.2",
    "rxjs": "^7.8.1"
  },
  "devDependencies": {
    "@eslint/eslintrc": "^3.2.0",
    "@eslint/js": "^9.18.0",
    "@nestjs/cli": "^11.0.0",
    "@nestjs/schematics": "^11.0.0",
    "@nestjs/testing": "^11.0.1",
    "@swc/cli": "^0.6.0",
    "@swc/core": "^1.10.7",
    "@types/express": "^5.0.0",
    "@types/jest": "^29.5.14",
    "@types/node": "^22.10.7",
    "@types/supertest": "^6.0.2",
    "eslint": "^9.18.0",
    "eslint-config-prettier": "^10.0.1",
    "eslint-plugin-prettier": "^5.2.2",
    "globals": "^16.0.0",
    "jest": "^29.7.0",
    "prettier": "^3.4.2",
    "run-script-webpack-plugin": "^0.2.2",
    "source-map-support": "^0.5.21",
    "supertest": "^7.0.0",
    "ts-jest": "^29.2.5",
    "ts-loader": "^9.5.2",
    "ts-node": "^10.9.2",
    "tsconfig-paths": "^4.2.0",
    "typescript": "^5.7.3",
    "typescript-eslint": "^8.20.0",
    "webpack": "^5.98.0",
    "webpack-node-externals": "^3.0.0"
  },

Node.js version

v20.19.0

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

No response

[lioncedric]

It was working before and now I have exactly the same issue :(

[kacime]

Same problem here as well

[micalevisk]

I didn't manage to spot the broken version. Both nestjs cli v10 and v11 behaves the same (the HRM seems not to be working). @lioncedric @kacime @coderlzw-cn can't you revert your code (including the lock file of package.json) to the point where the hot reload was working?

[sergiupris]

Downgrading "run-script-webpack-plugin" to "0.2.1" fixes the issue.

Process is killed, module.hot.dispose not even called within main.ts. As right now signal (defaults to false) was removed in if check: atassis/run-script-webpack-plugin#30 , atassis/run-script-webpack-plugin#32

---

Another solution using "run-script-webpack-plugin": "0.2.2" (latest) is:

autoRestart: true, // previous: false - Not quite the same but

Another solution using "run-script-webpack-plugin": "0.2.2" (latest) is:

// Moving app.close from module.hot.dispose to, also leaving dispose with an async callback
process.on('SIGTERM', async () => {
    if (app) {
      await app.close();
    }
});

[kamilmysliwiec]

Is this something we should report in the run-script-webpack-plugin repository?

[kacime]

Thank you @sergiupris !