How to get the type of anything in Crystal?

Question

In Javascript the use of typeof() allows you to quickly see what type of anything is, what is the equivalent in the Crystal?

Say the code below I wanted to check what type Crystal thought the object was.

  get "/" do
    object = {hello: "hello", world: "world"}
    object.to_json
    puts typeof(object)
  end

Answer 1

Sometimes google works wonders, I searched the API docs for typeof and found nothing.

It is just typeof() https://crystal-lang.org/reference/1.4/syntax_and_semantics/typeof.html