TypeScript models for most of the OpenXML spreadsheet (XLSX) spec with methods to read/write from a DOM object.
The Open XML specification referenced throughout this project files can be found here: http://www.ecma-international.org/publications/standards/Ecma-376.htm Warning ~40MB PDF - ECMA-376 5th edition Part 1 Additional reference material: https://docs.microsoft.com/en-us/dotnet/api/documentformat.openxml.spreadsheet?view=openxml-2.8.1