I Built an Excel Library
Ironsheet is a new JavaScript library that safely updates Excel files while preserving data integrity.
While exploring the JavaScript Excel ecosystem, I discovered that many existing libraries are largely abandoned, suffering from significant issues. Libraries like SheetJS, ExcelJS, and xlsx-populate have fundamental architectural flaws leading to data loss. To address this, I created Ironsheet, which maintains the original file as the source of truth and only updates explicitly targeted elements, ensuring data integrity.