===== ISTEM =====
Solve the following programming task.

TASK: Custom Promise.all (promiseAll)

Write a function 'promiseAll(promises)' that mimics the behaviour of the native Promise.all. If all promises fulfil it must resolve with an ordered array of results; if any rejects it must reject immediately with that error.

STARTER CODE (javascript):
function promiseAll(promises) {
  // Write your code here
}

module.exports = { promiseAll };


RULES:
- Keep the function name and signature EXACTLY as given.
- Return working code only. No explanations.
- Put the code in a single ``` block.
- Try to solve it first. If you genuinely cannot, write only this single
  line instead of producing faulty code: CANNOT_SOLVE

===== HAM YANIT =====
```javascript
function promiseAll(promises) {
  return new Promise((resolve, reject) => {
    if (!Array.isArray(promises)) {
      return reject(new TypeError('Input is not an array'));
    }
    const results = new Array(promises.length);
    let completed = 0;
    for (let i = 0; i < promises.length; i++) {
      Promise.resolve(promises[i])
        .then(value => {
          results[i] = value;
          completed++;
          if (completed === promises.length) {
            resolve(results);
          }
        })
        .catch(error => {
          reject(error);
        });
    }
  });
}
```