Interesting read, thanks for sharing! I have played around with formulas for my Excel-like data table product [DataGridXL](https://datagridxl.com https://datagr

Interesting read, thanks for sharing! I have played around with formulas for my Excel-like data table product [DataGridXL](https://datagridxl.com https://datagridxl.com) for quite a while but I decided not to include the feature since it was a little more difficult to implement than I had imagined, exactly because of these update chain rules. Perhaps one day, in a v2. Most other Javascript spreadsheet products are slow even without formulas, with a very slow DOM structure.