This is similar to https://github.com/handsontable/handsontable/issues/3082 . Most people I know are using Immutable.js and lodash to do formula computations in handsontable.
However, HOT does not maintain compatibility with ES6 functions and conventions - and so it is very difficult to integrate HOT with any new library.
A good way to figure out the ES6 conventions are https://github.com/facebook/immutable-js/wiki/Upgrading-to-Immutable-v3
Hi @sss, thanks for your feedback.
You are right. We did a first research of things that has to change according to ES6 and it is really a lot to do especially cause of formulas which are one of our main goals for 2016.
https://github.com/handsontable/handsontable/issues/3082 is visible as a improvement suggestion so any other issue categorized as a bug has a higher priority but we are aware of changes that are pushing us to chase the newest technologies.