Error: Cannot find module '@/app.module', use alias path with nestjs v9

[zhouweiming]

Is there an existing issue for this?

• I have searched the existing issues

Current behavior

pnpm run start

aa@0.0.1 start ***
nest start

Error: Cannot find module '@/app.module'
Require stack:

• /dist/main.js
  at Function.Module._resolveFilename (node:internal/modules/cjs/loader:1090:15)
  at Function.Module._load (node:internal/modules/cjs/loader:934:27)
  at Module.require (node:internal/modules/cjs/loader:1157:19)
  at require (node:internal/modules/helpers:119:18)
  at Object. (/src/main.ts:2:1)
  at Module._compile (node:internal/modules/cjs/loader:1275:14)
  at Object.Module._extensions..js (node:internal/modules/cjs/loader:1329:10)
  at Module.load (node:internal/modules/cjs/loader:1133:32)
  at Function.Module._load (node:internal/modules/cjs/loader:972:12)
  at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:83:12)
   ELIFECYCLE  Command failed with exit code 1.

Minimum reproduction code

https://github.com/zhouweiming/nestjs-demo.git

Steps to reproduce

1. clone the minimum reproduction code: https://github.com/zhouweiming/nestjs-demo.git
2. cd
3. pnpm install
4. pnpm start

Expected behavior

1. I only made two modifications: 1. Add paths to tsconfig.json; 2. Modify the import of app. module in main.ts

pnpm run start

> aa@0.0.1 start ***
> nest start

Error: Cannot find module '@/app.module'
Require stack:
- ***/dist/main.js
    at Function.Module._resolveFilename (node:internal/modules/cjs/loader:1090:15)
    at Function.Module._load (node:internal/modules/cjs/loader:934:27)
    at Module.require (node:internal/modules/cjs/loader:1157:19)
    at require (node:internal/modules/helpers:119:18)
    at Object.<anonymous> (***/src/main.ts:2:1)
    at Module._compile (node:internal/modules/cjs/loader:1275:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1329:10)
    at Module.load (node:internal/modules/cjs/loader:1133:32)
    at Function.Module._load (node:internal/modules/cjs/loader:972:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:83:12)

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

9.0.0

Packages versions

{
  "name": "aa",
  "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"
  },
  "dependencies": {
    "@nestjs/common": "^9.0.0",
    "@nestjs/core": "^9.0.0",
    "@nestjs/platform-express": "^9.0.0",
    "reflect-metadata": "^0.1.13",
    "rxjs": "^7.2.0"
  },
  "devDependencies": {
    "@nestjs/cli": "^9.0.0",
    "@nestjs/schematics": "^9.0.0",
    "@nestjs/testing": "^9.0.0",
    "@types/express": "^4.17.13",
    "@types/jest": "29.5.1",
    "@types/node": "18.16.12",
    "@types/supertest": "^2.0.11",
    "@typescript-eslint/eslint-plugin": "^5.0.0",
    "@typescript-eslint/parser": "^5.0.0",
    "eslint": "^8.0.1",
    "eslint-config-prettier": "^8.3.0",
    "eslint-plugin-prettier": "^4.0.0",
    "jest": "29.5.0",
    "prettier": "^2.3.2",
    "source-map-support": "^0.5.20",
    "supertest": "^6.1.3",
    "ts-jest": "29.1.0",
    "ts-loader": "^9.2.3",
    "ts-node": "^10.0.0",
    "tsconfig-paths": "4.2.0",
    "typescript": "^5.0.0"
  },
  "jest": {
    "moduleFileExtensions": [
      "js",
      "json",
      "ts"
    ],
    "rootDir": "src",
    "testRegex": ".*\\.spec\\.ts$",
    "transform": {
      "^.+\\.(t|j)s$": "ts-jest"
    },
    "collectCoverageFrom": [
      "**/*.(t|j)s"
    ],
    "coverageDirectory": "../coverage",
    "testEnvironment": "node",
    "moduleNameMapper": {
      "^@/(.*)$": "<rootDir>/../src/$1"
    }
  }
}

Node.js version

v19.7.0

In which operating systems have you tested?

• macOS
• Windows
• Linux

Other

nest info

---

| \ | | | | |_ |/ |/ __ | | | |
| | | ___ ___ | | | |\ --. | / \/| | | | | . | / _ / __|| __| | | `--. | | | | | |
| |\ || /_ | | /_/ //_/ /| _/| |_____| |
_| _/ _||/ _|_/ _/ _/__/___/

[System Information]
OS Version : macOS Unknown
NodeJS Version : v19.7.0
PNPM Version : 8.6.0

[Nest CLI]
Nest CLI Version : 9.0.0

[Nest Platform Information]
platform-express version : 9.0.0
schematics version : 9.0.0
testing version : 9.0.0
common version : 9.0.0
core version : 9.0.0
cli version : 9.0.0

[kamilmysliwiec]

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