file-type
Detect the file type of a file, stream, or data
docxtemplater
Generate docx, pptx, and xlsx from templates (Word, Powerpoint and Excel documents), from Node.js, the Browser and the command line
alasql
Use SQL to select and filter javascript data - including relational joins and search in nested objects (JSON). Export to and import from Excel and CSV
exceljs
Excel Workbook Manager - Read and Write xlsx and csv Files.
xlsx
SheetJS Spreadsheet data parser and writer
