Problem reading module.parent.filename when using commonjs

[vadymrybak]

While running the app locally (npm run dev) - everything is fine. Package.json below:

{
  "name": "workflow-mfe-server",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "prebuild": "tslint -c tslint.json -p tsconfig.json --fix",
    "build:prod": "webpack --env prod",
    "build:dev": "webpack --env dev",
    "prestart": "npm run prebuild",
    "start": "ts-node -r ./src/tracer.ts ./src/index.ts",
    "dev": "nodemon",
    "test": "jest --verbose=true --coverage --forceExit"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@opentelemetry/api": "^1.0.3",
    "@opentelemetry/exporter-collector-grpc": "^0.24.0",
    "@opentelemetry/instrumentation": "^0.24.0",
    "@opentelemetry/instrumentation-express": "^0.25.0",
    "@opentelemetry/instrumentation-http": "^0.24.0",
    "@opentelemetry/sdk-node": "^0.24.0",
    "axios": "^0.27.2",
    "chalk": "^4.1.0",
    "cookie-parser": "^1.4.6",
    "crypto": "^1.0.1",
    "dotenv-flow": "^3.1.0",
    "express": "^4.17.1",
    "express-http-context": "^1.2.4",
    "jwt-decode": "^3.1.2",
    "licensing-lib-js": "^1.0.14",
    "logform": "^2.2.0",
    "prom-client": "^14.0.1",
    "prometheus-api-metrics": "^3.2.2",
    "uuid": "^8.3.2",
    "winston": "^3.3.3"
  },
  "devDependencies": {
    "@types/cookie-parser": "^1.4.2",
    "@types/dotenv-flow": "^3.2.0",
    "@types/express": "^4.17.11",
    "@types/jest": "^26.0.21",
    "@types/logform": "^1.10.1",
    "@types/supertest": "^2.0.11",
    "@types/uuid": "^8.3.1",
    "@types/winston": "^2.4.4",
    "dotenv": "^8.2.0",
    "jest": "^26.6.3",
    "supertest": "^6.1.6",
    "ts-jest": "^26.5.6",
    "ts-loader": "^8.0.17",
    "ts-node": "^10.8.2",
    "typescript": "^4.2.3",
    "webpack": "^5.24.2",
    "webpack-cli": "^4.5.0"
  },
  "nodemonConfig": {
    "ignore": [
      "**/*.test.ts",
      "**/*.spec.ts",
      ".git",
      "node_modules",
      "dist"
    ],
    "watch": [
      "src"
    ],
    "exec": "npm start",
    "ext": "ts"
  }
}

Tsconfig.json:

{
    "compilerOptions": {
        "module": "commonjs",
        "esModuleInterop": true,
        "target": "es5",
        "noImplicitAny": true,
        "moduleResolution": "node",
        "sourceMap": true,
        "outDir": "dist",
        "baseUrl": ".",
        "paths": {
            "*": [
                "node_modules/*"
            ]
        }
    },
    "include": [
        "src/**/*"
    ]
}

The problem occurs when I build production app. When trying to launch the server by calling "node index.js" - I'm getting error:

Error: Could not find package.json up from 53263

By digging some source code I found this line of code in index.js of prometheus-api-metrics:

require('pkginfo')(metricsMiddleware, { dir: Path.dirname(module.parent.filename), include: ['name', 'version'] });

Apparently, when using "commonjs" - module.parent does not exist and it is causing a problem.

Does anyone have any solution for this?

[natl-set]

I ran into the same problem

[RubenNL]

By patching that file like this:

-const metricsMiddleware = { exports: {} };
-require('pkginfo')(metricsMiddleware, { dir: Path.dirname(module.parent.filename), include: ['name', 'version'] });
+const metricsMiddleware = { exports: {
+  name: "dummy",
+  version: "0.0.0"
+} };

All the features I need work again. I can't find the "dummy" name anywhere, so I guess it's just ignored?