Number of Laser Beams in a Bank LeetCode solution in JavaScript

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var numberOfBeams = function (bank) {
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  let totalBeams = 0;
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  const maximumSecurityDevicePerRow = bank
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    .map((row) => (row.match(/1/g) || []).length)
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    .filter(Boolean);
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  for (let index = 0; index < maximumSecurityDevicePerRow.length - 1; index++)
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    totalBeams +=
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      maximumSecurityDevicePerRow[index] *
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      maximumSecurityDevicePerRow[index + 1];
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  return totalBeams;
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};