Comment by dimitar

Data oriented in clojure slang means modeling things in data structures like hashmaps and clojure sets as opposed to defining classes and types. The language encourages you to do it and provides a lot of built-in functions to work with them.

So it must have tools save, manipulate and visualize conveniently (pretty printing, folding etc) the values of vars that contain nested maps, sequences, sets, etc.

Existing clojure IDEs like CIDER for emacs or Calva for VSCode do that too, and it is a must have to have a nice experience with the language