'use strict';

function truncateText(text, maxLen) {
  if (text.length <= maxLen) return text;
  return text.slice(0, maxLen) + '...';
}

function sleep(ms) {
  return new Promise((resolve) => setTimeout(resolve, ms));
}

async function streamText(prefix, text, delayMs) {
  if (prefix) process.stdout.write(prefix);
  for (const ch of text) {
    process.stdout.write(ch);
    await sleep(delayMs);
  }
  process.stdout.write('\n');
}

module.exports = { truncateText, sleep, streamText };