Get the current column and row in the terminal using ANSI Device Status Report

dsr.js

#!/usr/bin/env node
// Loosely based on https://stackoverflow.com/questions/36929209/read-ansi-escape-from-terminal

'use strict';

var deasync = require('deasync');

function asyncDSR(opts, callback) {
  // opts is an optional object:
  // { in: input }
  if (callback === null) {
    callback = opts;
    opts = { in: process.stdin };
  }
  if(opts.in.isTTY) {
    opts.in.setRawMode(true);
  }
  opts.in.once('data', function(data) {
    opts.in.setRawMode(false);
    opts.in.pause();
    var m = data.toString().match(/^\u001b\[([0-9]+);([0-9]+)R$/);
    callback({row: m[1], col: m[2]});
  });
  process.stdout.write('\u001b[6n');
}

var syncDSR = deasync(asyncDSR);

function DSR(opts) {
  try {
    return syncDSR(opts);
  }
  catch(err) {
    return err;
  }
}

module.exports.asyncDSR = asyncDSR;
module.exports.DSR = DSR;