I'm concerned about the lack of type annotations. What about XSS prevention? Maintainability? An API? How are people supposed to use this code in future projects? Your variable names don't conform to Code Complete. This code smells funny. Haven't you read clean code? And I don't think it's general enough. What if people want to add columns, but preserve formulas? What made you think you shouldn't use React for this? At least Vue, come on.
ah, if only we could all code just what we needed, instead of over-engineering solutions to problems we wished we had
ah, if only we could all code just what we needed, instead of over-engineering solutions to problems we wished we had