Detect the file type of a file, stream, or data
SheetJS Spreadsheet data parser and writer
Excel (XLSB/XLSX/XLSM/XLS/XML) and ODS spreadsheet parser and writer (extended to enable read/write of cell formats with xlsx files)
Lightweight debugging utility for Node.js and the browser
Lodash modular utilities.
React is a JavaScript library for building user interfaces.
A querystring parser that supports nesting and arrays, with a depth limit
Higher-order functions and common patterns for asynchronous code
Babel compiler core.