upon updating to 2.0.9^ Unhandled promise rejection warning on save while running nodemon.

• nodemon -2.0.9:
• node -12.16.3:
• OS : Windows 10
• terminal: gitbash and also in vscode terminal(poweshell)
• Not using docker
• This happens when I run "server": "cross-env NODE_ENV=development nodemon index.js", this script.

Expected behaviour

I expect nodemon to restart and track my changes.

Actual behaviour

nodemon throws an unhandled promise rejection warning on save.

I updated to 2.0.9 because of the closing response on issue #1854

Now nodemon still fails to restart, but it does so with this new unhandled promise rejection.

I tried a few different methods of updating nodemon like npm install nodemon@latest and npm update nodemon. And also tried uninstalling it completely both locally and globally. Then reinstalling

I will also make a note that the unhandled promise rejection occurs on nodemon versions 2.0.8-alpha.a and up.

When I downgrade to 2.0.7 it silently fails to restart still.

Steps to reproduce

I’m on windows 10, My package.json looks like this

{
  "name": "new",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "server": "cross-env NODE_ENV=development nodemon index.js",
    "client": "npm run start --prefix client",
    "dev": "concurrently \"npm run server\" \"npm run client\"",
    "start": "node index.js",
    "migrate": "knex migrate:rollback && knex migrate:latest && knex seed:run",
    "heroku-postbuild": "NPM_CONFIG_PRODUCTION=false npm install --prefix client && npm run build --prefix client"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "aws-sdk": "^2.886.0",
    "bcrypt": "^5.0.1",
    "cross-env": "^7.0.3",
    "dotenv": "^8.2.0",
    "express": "^4.17.1",
    "express-jwt": "^6.0.0",
    "express-session": "^1.17.1",
    "jsonwebtoken": "^8.5.1",
    "knex": "^0.95.4",
    "knexnest": "^1.0.0",
    "moment": "^2.29.1",
    "moment-timezone": "^0.5.33",
    "mongoose": "^5.12.2",
    "morgan": "^1.10.0",
    "multer": "^1.4.2",
    "passport": "^0.4.1",
    "passport-facebook": "^3.0.0",
    "passport-google-oauth20": "^2.0.0",
    "passport-jwt": "^4.0.0",
    "passport-linkedin-oauth2": "^2.0.0",
    "passport-local": "^1.0.0",
    "path": "^0.12.7",
    "pg": "^8.6.0",
    "react-icons": "^4.2.0",
    "stripe": "^8.140.0",
    "universal-cookie": "^4.0.4",
    "uuid": "^8.3.2"
  },
  "devDependencies": {
    "concurrently": "^6.0.0",
    "nodemon": "^2.0.9"
  }
}

---

results from --dump

--------------
node: v12.16.3
nodemon: 2.0.7
command: C:\Program Files\nodejs\node.exe C:\Users\unomi\OneDrive\Desktop\workwip_deployed\web-workwip\node_modules\nodemon\bin\nodemon.js --dump index.js
cwd: C:\Users\unomi\OneDrive\Desktop\workwip_deployed\web-workwip
OS: win32 x64
--------------
{
  run: false,
  system: {
    cwd: 'C:\\Users\\unomi\\OneDrive\\Desktop\\workwip_deployed\\web-workwip'
  },
  required: false,
  dirs: [
    'C:\\Users\\unomi\\OneDrive\\Desktop\\workwip_deployed\\web-workwip'
  ],
  timeout: 1000,
  options: {
    dump: true,
    ignore: [
      '**/.git/**',
      '**/.nyc_output/**',
      '**/.sass-cache/**',
      '**/bower_components/**',
      '**/coverage/**',
      '**/node_modules/**',
      re: /.*.*\/\.git\/.*.*|.*.*\/\.nyc_output\/.*.*|.*.*\/\.sass\-cache\/.*.*|.*.*\/bower_components\/.*.*|.*.*\/coverage\/.*.*|.*.*\/node_modules\/.*.*/
    ],
    watch: [ '*.*', re: /.*\..*/ ],
    monitor: [
      '*.*',
      '!**/.git/**',
      '!**/.nyc_output/**',
      '!**/.sass-cache/**',
      '!**/bower_components/**',
      '!**/coverage/**',
      '!**/node_modules/**'
    ],
    ignoreRoot: [
      '**/.git/**',
      '**/.nyc_output/**',
      '**/.sass-cache/**',
      '**/bower_components/**',
      '**/coverage/**',
      '**/node_modules/**'
    ],
    restartable: 'rs',
    colours: true,
    execMap: { py: 'python', rb: 'ruby', ts: 'ts-node' },
    stdin: true,
    runOnChangeOnly: false,
    verbose: false,
    signal: 'SIGUSR2',
    stdout: true,
    watchOptions: {},
    execOptions: {
      script: 'index.js',
      exec: 'node',
      args: [],
      scriptPosition: 0,
      nodeArgs: undefined,
      execArgs: [],
      ext: 'js,mjs,json',
      env: {}
    }
  },
  load: [Function],
  reset: [Function: reset],
  lastStarted: 0,
  loaded: [],
  watchInterval: null,
  signal: 'SIGUSR2',
  command: {
    raw: { executable: 'node', args: [ 'index.js' ] },
    string: 'node index.js'
  }
}
--------------

[karbafoo]

I managed to replicate it by disabling Windows Management Instrumentation service. docs. its a windows problem

[SmitBhamwala]

Can you install npm i -g nodemon@debug and try with this version and let me know the outcome?

I tried this but the error is still there. Now, I have installed 2.0.7 version and its working fine for me.