Find Nearest Point That Has the Same X or Y Coordinate LeetCode solution in JavaScript

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var nearestValidPoint = function (x, y, points) {
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  let min = Infinity;
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  let idx = -1;
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  points.forEach(([a, b], i) => {
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    if (a === x || b === y) {
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      const dist = Math.abs(x - a) + Math.abs(y - b);
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      if (dist < min) {
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        idx = i;
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        min = dist;
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      }
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    }
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  });
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  return idx;
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};