Lucky Numbers in a Matrix LeetCode solution in JavaScript

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/**
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 * @param {number[][]} matrix
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 * @return {number[]}
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 */
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var luckyNumbers = function (matrix) {
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  let rowLucky = new Set();
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  let colLucky = new Set();
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  let cols = [...Array(matrix[0].length)].map((e) => []);
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  for (let i = 0; i < matrix.length; i++) {
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    let row = matrix[i];
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    rowLucky.add(Math.min(...row));
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    // build columns
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    for (let j = 0; j < row.length; j++) {
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      cols[j].push(row[j]);
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    }
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  }
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  // Compare sets
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  for (const col of cols) colLucky.add(Math.max(...col));
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  return [...rowLucky].filter((x) => colLucky.has(x));
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};