Javascript cooperative threading

gistfile1.txt

# cat ./threads.js&& node ./threads.js
const WAIT_TIME = 1000;

async function sleep(ms) {
  await new Promise((resolve) => setTimeout(resolve, ms))

}


async function thread(n) {
  for (;;) {
    console.log(`${new Date().toLocaleTimeString()} hello from thread #${n}`);
    await sleep(WAIT_TIME);
  }
}

async function main() {
  thread(1);
  thread(2);
  thread(3);
  for (;;) {
    console.log(`${new Date().toLocaleTimeString()} hello from main thread`);
    await sleep(WAIT_TIME);
  }
}

main();
console.log('done')
11:09:32 AM hello from thread #1
11:09:32 AM hello from thread #2
11:09:32 AM hello from thread #3
11:09:32 AM hello from main thread
done
11:09:33 AM hello from thread #1
11:09:33 AM hello from thread #2
11:09:33 AM hello from thread #3
11:09:33 AM hello from main thread
11:09:34 AM hello from thread #1
11:09:34 AM hello from thread #2
11:09:34 AM hello from thread #3
11:09:34 AM hello from main thread
^C
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