readline by line.. do not terminate, can use object-stream-tools

readline.js

if (module.parent) {
  return
}

const readline = require('readline')
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  // terminal: false // isTTY
})

rl.on('line', (line) => {
  console.log('line', line)
})

if (module.parent) {
  return
}
let chunks = ''
process.stdin.resume()
process.stdin.on('data', data =>
  chunks += data.toString())

process.stdin.on('end', async () => {
  process.stdout.write(await main(chunks), 'utf-8')
  process.exit(0)
})