Comment by HeyImAlex

Another thing I’ve encountered with tree/structured diffs is a concept of identity. diff([{id:1,name:foo}],[{id:2,name:foo}] should show object w/ id:1 removed and id:2 added, not id changed from 1 to 2. Tough because then your diffing algo needs to be aware of the object structure (imo using convention and saying “no objects can contain this key” is pretty tough when you accept any user generated data).