Password collection from the console for node.js

enter-password.js

var get_pass = function(callback) {
  console.info("Enter password:")
  var stdin = process.openStdin()
  stdin.setEncoding('utf8')
  
  var tty = require('tty')
  tty.setRawMode(true)
  
  var password = ""
  stdin.on("data", function (c) {
    switch (c) {
      case "\n": case "\r": case "\u0004":
        tty.setRawMode(false)
        console.log("Password received")
        stdin.pause()
        callback(password)
        break
      case "\u0003":
        process.exit()
        break
      default:
        password += c
        break
    }
  })
}

• Added the setEncoding to ensure characters instead of a buffer (replaces c = "" + c)
• Wrapped in a function expecting a callback with the collected password