Minimum Time Difference LeetCode solution in JavaScript

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var findMinDifference = function (timePoints) {
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  const DAY_MINUTES = 24 * 60;
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  const set = new Set();
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  for (let index = 0; index < timePoints.length; index++) {
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    const time = timePoints[index];
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    const [hours, minutes] = time.split(":");
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    const totalMinutes = hours * 60 + +minutes;
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    if (set.has(totalMinutes)) return 0;
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    set.add(totalMinutes);
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  }
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  const timeMinutes = [...set].sort((a, b) => a - b);
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  return timeMinutes.reduce((min, time, index) => {
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    const next = timeMinutes[index + 1];
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    const diff = next ? next - time : DAY_MINUTES - time + timeMinutes[0];
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    return Math.min(min, diff);
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  }, Infinity);
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};