Get Cursor Position in Terminal with Node.js

cursor-position.js

module.exports = function(callback) {
  require('child_process').exec('./cursor-position.sh', function(error, stdout, stderr) {
    callback(error, JSON.parse(stdout));
  });
}

cursor-position.sh

#!/bin/bash
# based on a script from http://invisible-island.net/xterm/xterm.faq.html
# http://stackoverflow.com/questions/2575037/how-to-get-the-cursor-position-in-bash
exec < /dev/tty
oldstty=$(stty -g)
stty raw -echo min 0
# on my system, the following line can be replaced by the line below it
echo -en "\033[6n" > /dev/tty
# tput u7 > /dev/tty    # when TERM=xterm (and relatives)
IFS=';' read -r -d R -a pos
stty $oldstty
# change from one-based to zero based so they work with: tput cup $row $col
row=$((${pos[0]:2} - 1))    # strip off the esc-[
col=$((${pos[1]} - 1))
echo \{\"row\":$row,\"column\":$col\}

index.js

var getCursorPosition = require('./cursor-position');

getCursorPosition(function(error, position) {
  console.log('row:', position.row, 'column:', position.column)
});

You can also possibly calculate the cursor position by:

• reading each line in the terminal window
• adding a new line
• re-reading each line and comparing