Using macroexpand inside a macro in Clojurescript doesn't work

[jpmonettas]

Hi everybody!,Does anybody knows why this macro

(defmacro tester [form]
(println (macroexpand form))
nil)

When used from clojure :

(tester (let [a 5] a))
;; prints
(let* [a 5] a)

But when used from clojurescript :

(tester (let [a 5] a))
;; prints
(let [a 5] a)

So the same macro doesn’t do the same, macroexpand doesn’t work at macro level when the cljs compiler calls it

[didibus]

There is no macroexpand in ClojureScript. ClojureScript cannot expand macros, only Clojure can.

And in your case, I’m guessing maybe your macro isn’t defined properly for ClojureScript. I forgot the rules, but it is a bit tricky. The macro has to be in a .clj file, and in ClojureScript you need to call require-macro.

[jpmonettas]

Sorry, maybe I didn’t specified all the details.

This is a normal Clojure macro defined in a macros.clj file.

So it goes something like this:

In macros.clj :

 (ns project.macros)

(defmacro m [form]
  (let [form2 (macroexpand form)]
        ;; do something with form2
  ))

In test.cljs :

(ns project.test
   (:require-macros [project.macros :refer [m]])

(println (and 1 2))

So if I use that same macro from a clojure project, form2 gets bind to

(let* ... (if* ...))

While when using it from clojurescript form2 gets bind to

(and 1 2)

Shouldn’t the macro be expanding the same, since it is compile time and clojure world?