Check for target average pair in sorted array algorithm in JavaScript

Given a sorted array of numbers and a target average value, return whether or not it is possible to achieve the target average value with a pair of numbers from the array.

function canMakeAveragePair(items, target) {
  let t = 0;
  let h = items.length - 1;
  while (t < h) {
    const avg = (items[t] + items[h]) / 2;
    if (avg === target) {
      return true;
    } else if (avg < target) {
      t++;
    } else if (avg > target) {
      h--;
    }
  }
  return false;
}

This algorithm is $O(n)$ time and $O(1)$ space.

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