I’m developing an application using React in FrontEnd and Kotlin in Backend, but the problem is that i have to provide for the users an Excel file with their Template, i only need to put data in his template and send back to him, but the main libs to deal with that(free ones) like XLSX and EXCELJS don’t help to solve this problem, because when i generate the Excel, all the formulas, refs, styles are lost. With ExcelJs some styles are preserved, but the rest of the things, no.