Heaters LeetCode solution in JavaScript

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var findRadius = function (houses, heaters) {
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  houses.sort((a, b) => a - b);
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  heaters.sort((a, b) => a - b);
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  let heaterPos = 0;
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  const getRadius = (house, pos) => Math.abs(heaters[pos] - house);
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  return houses.reduce((radius, house) => {
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    while (
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      heaterPos < heaters.length &&
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      getRadius(house, heaterPos) >= getRadius(house, heaterPos + 1)
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    )
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      heaterPos += 1;
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    const currentRadius = getRadius(house, heaterPos);
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    return Math.max(radius, currentRadius);
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  }, 0);
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};