Using clojurescript to compile clojurescript

compile.cljs

(ns example.core
  (:require [cljs.js :as cjs]
            [cljs.analyzer :as ana :include-macros true]
            [cljs.reader :as r]
            [cljs.pprint :as pprint]))

(enable-console-print!)

(let [src  "(ns t.math)
            (defn increase [n] (inc n))"
      opts {:eval    cjs/js-eval
            :verbose false}]
  (cjs/compile-str (cjs/empty-state)
                   src
                   "the compilation"
                   opts
                   (fn [{:keys [value]}]
                     (prn value)
                     (js/eval value))))

;; "goog.provide('t.math');\ngoog.require('cljs.core');\nt.math.increase = (function t$math$increase(n){\nreturn (n + (1));\n});\n"

;; t.math.increase(1)
;; => 2