NPM package 'bin' script for Windows

your "bin" should be "cucumber" npm will create a "cucumber" or "cucumber.cmd" file pointing to "node %SCRIPTNAME%". the former being for posix environments, the latter being for windows use... If you want the "js" to be part of the executable name... you should use a hyphon instead... "cucumber-js" ... Having a .js file will come before the .js.cmd in your case causing the WScript interpreter to run it as a JScript file, not a node script.

I would suggest looking at coffee-script's package.json for a good example.

{
  "name":         "coffee-script",
  "description":  "Unfancy JavaScript",
  "keywords":     ["javascript", "language", "coffeescript", "compiler"],
  "author":       "Jeremy Ashkenas",
  "version":      "1.4.0",
  "licenses":     [{
    "type":       "MIT",
    "url":        "https://raw.github.com/jashkenas/coffee-script/master/LICENSE"
  }],
  "engines":      {
    "node":       ">=0.4.0"
  },
  "directories" : {
    "lib" : "./lib/coffee-script"
  },
  "main" : "./lib/coffee-script/coffee-script",
  "bin":          {
    "coffee":     "./bin/coffee",
    "cake":       "./bin/cake"
  },
  "scripts": {
    "test": "node ./bin/cake test"
  },
  "homepage":     "http://coffeescript.org",
  "bugs":         "https://github.com/jashkenas/coffee-script/issues",
  "repository":   {
    "type": "git",
    "url": "git://github.com/jashkenas/coffee-script.git"
  },
  "devDependencies": {
    "uglify-js":  ">=1.0.0",
    "jison":      ">=0.2.0"
  }
}

Windows ignores the shebang line #!/usr/bin/env node and will execute it according to the .js file association. Be explicit about calling your script with node

node hello.js

ps. Pedantry: shebangs aren't in the POSIX standard but they are supported by most *nix system.

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If you package your project for Npm, use the 'bin' field in package.json. Then on Windows, Npm will install a .cmd wrapper along side your script so users can execute it from the command-line

hello

For npm to create the shim right, the script must have the shebang line #!/usr/bin/env node