The readline functionality is not very well supported in nodejs for it's api level is unstable as well as it is treated for tty use first. Here is a simple segment to readline from stdin. If you want to readline from a file, either changing the code with fs.createReadStream or just redirecting input from bash can do.

readline.js

var readline = require('readline');

function main() {
  readline.createInterface({
    input: process.stdin,
    terminal: false,
  }).on('line', function(line) {
    console.log(line);
  }); 
}

if (require.main === module) {
  main();
}