Example: Detect keypress event in Node.js console app

KeyPressEvent.js

var readline = require('readline');

readline.emitKeypressEvents(process.stdin);

if (process.stdin.isTTY)
    process.stdin.setRawMode(true);

process.stdin.on('keypress', (chunk, key) => {
  if (key && key.name == 'q')
  process.exit();
});

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