Delete Characters to Make Fancy String LeetCode solution in JavaScript

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var makeFancyString = function (s) {
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  let res = "";
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  let currCount = 0;
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  for (let i = 0; i < s.length; i++) {
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    if (currCount === 2 && s[i] === s[i - 1]) continue;
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    else if (s[i] === s[i - 1]) {
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      currCount++;
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      res += s[i];
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    } else {
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      currCount = 1;
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      res += s[i];
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    }
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  }
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  return res;
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};