App.js

import { app } from './js/test_cljs.core';

export default app

shadow-cljs.edn

;; shadow-cljs configuration
{:source-paths ["src" "test"]

 :dependencies [[reagent "0.8.1" :exclusions [cljsjs/react]]]

 :builds
 {:app {:target :npm-module
        :output-dir "js/"
        :runtime :browser
        :devtools {:devtools-url "http://<host-ip>:9630"}}}}  ;; This will let client connect our machine, so that we can have a repl.

src_SLASH_test_cljs_SLASH_core.cljs

(ns test-cljs.core
  (:require [reagent.core :as r]))

(def rn (js/require "react-native"))
(def View (-> rn .-View r/adapt-react-class))
(def Text (-> rn .-Text r/adapt-react-class))

(defn app []
  (r/as-element
   [View {:style {:justify-content "center"
                  :flex 1
                  :align-items "center"
                  :background-color "#fff"}}
    [Text {:on-press #(js/alert "FOOBAR")}
     "Foobar Bar"]]))