Simple React spreadsheet component based on Mobx. It is string based and enables the user to enter arbitrary JS code in the cells, eg.:
=> SHEET.rows[1][0].value
This will get the value from the first cell of the first row. Unlike eg. Excel these cells require => to be marked as formulas.
This is an educational project not to be used anywhere.
Link: https://pug5g.csb.app/