help function for xlsx to resolve extra excel file blocking issue

sheet_to_json.js

const _ = require('lodash');
const xlsx = require('xlsx');

const sheet_to_json = (sheet, headerRowIndex = 1, map = v => v) => {
  const filteredData = _.toPairs(sheet).filter(([, value]) => value.hasOwnProperty('w'));
  const dataMap = _.fromPairs(filteredData);
  const columnKeys = [];
  let totalRows = 0;
  filteredData.forEach(([key]) => {
    const { columnKey, rowKey } = /(?<columnKey>[A-z]+)(?<rowKey>\d+)/.exec(key).groups;
    if (!new Set(columnKeys).has(columnKey)) {
      columnKeys.push(columnKey);
    }
    if (+rowKey > totalRows) {
      totalRows = +rowKey;
    }
  });
  columnKeys.sort();
  const columnKeyNameMap = _.fromPairs(columnKeys.map(key => {
    return [key, _.get(dataMap, `${key}${headerRowIndex}.w`)];
  }));
  const output = [];
  for (let startRowIndex = 3; startRowIndex <= totalRows; startRowIndex++) {
    const rowData = _.fromPairs(columnKeys.map(key => {
      return [_.get(columnKeyNameMap, key), map(_.chain(dataMap).get(`${key}${startRowIndex}.w`, '').value())];
    }));
    output.push(rowData);
  }
  return { json: output, columns: Object.values(columnKeyNameMap) };
}