Sum of Even Numbers After Queries

export function sumEvenAfterQueries(nums: number[], queries: number[][]): number[] {
  const isEven = (num: number) => num % 2 === 0;
  let totalValue = nums.reduce((total, num) => (isEven(num) ? total + num : total), 0);
 
  const answer: number[] = [];
  queries.forEach(([value, i]) => {
    if (isEven(nums[i])) {
      totalValue -= nums[i];
    }
    nums[i] += value;
    if (isEven(nums[i])) {
      totalValue += nums[i];
    }
    answer.push(totalValue);
  });
 
  return answer;
}