for_await_nested.js

/**
 *
 * WITHOUT NESTING
 */

// An asynchronous function that performs a task on each item
/* async function performAsyncTask(item) {
  // Simulating an asynchronous task with a delay
  await delay(1000);
  console.log(`Task completed for item: ${item}`);
} */

// A function that returns a promise after a certain delay
/* function delay(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
} */

// An array of items
//const items = [1, 2, 3, 4];

// Execute the asynchronous tasks on each item using for await...of loop
/* (async () => {
  for await (const item of items) {
    await performAsyncTask(item);
  }
  console.log('All tasks completed!');
})(); */

/**
 *
 * NESTING
 */

// An asynchronous function that performs a task on each letter
async function performAsyncTask(letter) {
  // Simulating an asynchronous task with a delay
  await delay(3000);
  console.log(`Task completed for letter: ${letter}`);
}

// A function that returns a promise after a certain delay
function delay(ms) {
  return new Promise((resolve) => setTimeout(resolve, ms));
}

// An array of letters
const letters = ['a', 'b', 'c'];

// Execute the nested asynchronous tasks using for await...of loops
(async () => {
  for await (const letter of letters) {
    console.log(`Processing letter: ${letter}`);

    const nestedLetters = [1, 2, 3];
    for await (const nestedLetter of nestedLetters) {
      await performAsyncTask(nestedLetter);
    }

    console.log(`Nested tasks completed for letter: ${letter}`);
  }
  console.log('All tasks completed!');
})();