I have updated to handsontable v14 (I was using 13) but still not working, the thing is that API documentation refers that there is no methods for collapsing:
As per your question, yeas, I’m using the library in NextJS and I’ve created a HandsontableWrapper, does that makes any difference?
Thank you for the details. You are right. When I wanted to create a NextJS example I was able to get some of the NestedRows plugin’s method, but the collapseAll() is not among them. I will discuss that internally and get back to you.