tonicdev seems to do it, though I have never used it: http://blog.tonicdev.com/2015/09/10/time-traveling-in-node.js-notebooks.html http://blog.tonicdev.com/2015

tonicdev seems to do it, though I have never used it: http://blog.tonicdev.com/2015/09/10/time-traveling-in-node.js-notebooks.html http://blog.tonicdev.com/2015/09/10/time-traveling-in-node.j... note: it does undo, but not recalculation on demand ala excel.