average of two sorted arrays in typescript

index.ts
function averageOfTwoSortedArrays(arr1: number[], arr2: number[]): number {
  const mergedArray: number[] = [];
  let i = 0;
  let j = 0;

  // Merge the two sorted arrays into one sorted array
  while (i < arr1.length && j < arr2.length) {
    if (arr1[i] < arr2[j]) {
      mergedArray.push(arr1[i++]);
    } else {
      mergedArray.push(arr2[j++]);
    }
  }
  while (i < arr1.length) {
    mergedArray.push(arr1[i++]);
  }
  while (j < arr2.length) {
    mergedArray.push(arr2[j++]);
  }

  // Find the median of the merged array
  const mid = Math.floor(mergedArray.length / 2);
  if (mergedArray.length % 2 === 0) {
    return (mergedArray[mid - 1] + mergedArray[mid]) / 2;
  } else {
    return mergedArray[mid];
  }
}
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