xlsx to json with empty cells
can you replace content: XLSX.utils.sheet_to_json(workbook.Sheets[sheet]) with content: XLSX.utils.sheet_to_json(workbook.Sheets[sheet], {defval:""}) in your code and try again?
This should work. Working example
let XLSX = require('xlsx');const workbook = XLSX.readFile(filename);const sheet_name_list = workbook.SheetNames;let jsonPagesArray = [];sheet_name_list.forEach(function(sheet) { const jsonPage = { name: sheet, content: JSON.parse(JSON.stringify(XLSX.utils.sheet_to_json(workbook.Sheets[sheet],{defval:""}))) }; jsonPagesArray.push(jsonPage); });console.log(jsonPagesArray[0].content);