nodejs-eventloop.js

const readline = require('readline');// https://nodejs.org/api/readline.html
readline.emitKeypressEvents(process.stdin);//https://nodejs.org/api/readline.html#readline_readline_emitkeypressevents_stream_interface
process.stdin.setRawMode(true);

function showKey(str,count) {
   process.stdout.write(str+" ");
   if(count % 30 === 0) process.stdout.write("\n");
}


//main
var count = 0;
process.stdin.on('keypress', (str, key) => {
  if (key.ctrl && key.name === 'c') {
    process.exit();
  } else {
    showKey(str,count);
    count++;
  }
});
console.log('Press any key...');


//notes:
// rund node code https://npm.runkit.com/