ANSI code getter

index.js

var stdin = process.stdin;
stdin.setRawMode(true);
stdin.resume()
stdin.setEncoding('utf8');
stdin.on('data',function(key) {
  
console.log(toUnicode(key));
   if (key == '\u0003') { process.exit(); } 
})

function toUnicode(theString) {
  var unicodeString = '';
  for (var i=0; i < theString.length; i++) {
    var theUnicode = theString.charCodeAt(i).toString(16).toUpperCase();
    while (theUnicode.length < 4) {
      theUnicode = '0' + theUnicode;
    }
    theUnicode = '\\u' + theUnicode;
    unicodeString += theUnicode;
  }
  return unicodeString;
}