// Demonstrates that the main thread event loop stays responsive
// while heavy work runs on worker threads.
// Requires Node v24+.
//
// Run: node examples/non-blocking/main.ts

import { workers } from '../../src/index.ts';
import { fibonacci } from './fibonacci.ts';

// Tick a counter on the main thread to prove it's not blocked
let ticks = 0;
const interval = setInterval(() => {
  ticks++;
  process.stdout.write(`\r  main thread tick #${ticks}`);
}, 100);

console.log('Computing fibonacci(42) on a worker pool...');
console.log('Meanwhile, the main thread keeps ticking:\n');

{
  using run = workers(2);
  const start = performance.now();
  const [a, b] = await run([fibonacci(42), fibonacci(41)]);
  const elapsed = (performance.now() - start).toFixed(0);

  clearInterval(interval);
  console.log(`\n\nResults: fib(42)=${a}, fib(41)=${b}`);
  console.log(`Computed in ${elapsed}ms with ${ticks} main-thread ticks (not blocked!)`);
}