-idempotent-prop)

</code></pre>
<pre><code class="clojure">
    (ns my.spec
    (:require [clojure.spec :as s]))

    (s/def ::a integer?)
    (s/conform ::a 12)
    </code></pre>
<pre><code class="clojure">
    (ns my.cljs
      (:require [cljs.js :as cljs :refer [eval-str]]))

      (eval-str (cljs.js/empty-state) "(+ 1 2)" 'cljs.me {:eval cljs.js/js-eval} identity)


    </code></pre>

<pre><code class="clojure">
(ns my.walk
  (:require [clojure.walk :refer [postwalk]]))
  (postwalk identity {:a 1})
   