I know there's a React component. There are many. They don't come even closer to the functionalities of an actual Excel-like spreadsheet. Implementing 70% of t

I know there's a React component. There are many. They don't come even closer to the functionalities of an actual Excel-like spreadsheet. Implementing 70% of the most basic of all functionality of Excel is easy. Implementing 90% is insanely difficulty. I would say Handsontable reaches the mark of 78%. I've tried twice, one with React + Mori[0] and one in Cyclejs[1]. In the first I may have reached 82%, in the second probably 85%. But in both cases the latest features I added started to conflict with the oldest ones and I abandoned everything. [0]: https://github.com/fiatjaf/react-microspreadsheet https://github.com/fiatjaf/react-microspreadsheet [1]: http://sheets.alhur.es/ http://sheets.alhur.es/