Card Flipping Game LeetCode solution in JavaScript

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var flipgame = function (fronts, backs) {
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  const MAX = Number.MAX_SAFE_INTEGER;
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  const n = fronts.length;
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  const set = new Set();
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  let min = MAX;
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  for (let i = 0; i < n; i++) {
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    const front = fronts[i];
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    const back = backs[i];
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    if (front === back) {
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      set.add(front);
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    }
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  }
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  for (let i = 0; i < n; i++) {
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    const front = fronts[i];
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    const back = backs[i];
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    if (front === back) continue;
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    if (!set.has(front)) min = Math.min(front, min);
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    if (!set.has(back)) min = Math.min(back, min);
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  }
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  return min === MAX ? 0 : min;
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};