Practice.js

// Simulated async task
function fetchData(id) {
  return new Promise((resolve) => {
    const delay = Math.floor(Math.random() * 3000); // Random delay up to 3s
    setTimeout(() => {
      console.log(`Fetched data for ${id} after ${delay}ms`);
      resolve(`result-${id}`);
    }, delay);
  });
}

const tasks = [
  () => fetchData(1),
  () => fetchData(2),
  () => fetchData(3),
  () => fetchData(4),
  () => fetchData(5),
];

const limit = 2;

const runWithLimit = (tasks, limit) => {
  let results = new Array(tasks.length);
  let progress = 0;
  let index = 0;
  return new Promise((resolve, reject) => {
    function executeTask() {
      while (progress < limit && tasks.length > 0) {
        const task = tasks[index];
        task()
          .then(() => {
            results[]
          })
          .catch(reject)
          .finally(() => {
            progress--;
            index++;
            if (index === tasks.length) {
              resolve(results);
            }
            executeTask();
          });
      }
    }
    executeTask();
  });
};

runWithLimit(tasks, limit).then((results) => {
  console.log("All results:", results);
});