Find the Winner of the Circular Game LeetCode solution in JavaScript

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/**
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 * @param {number} n
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 * @param {number} k
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 * @return {number}
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 */
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var findTheWinner = function (n, k) {
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  let friends = Array.from({ length: n }, (_, index) => index + 1);
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  let start = 0;
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  while (friends.length != 1) {
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    start += k - 1;
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    start = start % friends.length;
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    friends.splice(start, 1);
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  }
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  return friends[0];
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};