reverseInput.js

const readline = require('readline');

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  terminal: false
});

const lines = [];

rl.on('line', line => {
  lines.push(line);
});

rl.on('close', () => {
  console.log(lines.reverse().join('\n'));
});