[SOLVED] simple boot project not working with cljs and async

simple boot project not working with cljs and async

I have a very simple project. I created the simplest ever project with boot and cljs. It compiled successfully and I was able to see the correct log in the html. When I added a basic support for async I got the message:

No such namespace: clojure.core.async, could not locate clojure/core/async.cljs, clojure/core/async.cljc, or Closure namespace "clojure.core.async"

The project has just the following structure:

exemplo_cljs
    html
       index.html
    src
       exemplo_cljs
           core.cljs
    build.boot

The contents of index.html:

<!doctype html>
<html lang="en">
    <head>
        <title>Hello</title>
    </head>
    <body>
        <h2>Hello</h2>
        <script src="main.js"></script>
    </body>
</html>

core.cljs

(ns exemplo-cljs.core
  (:require [clojure.core.async :as async]))

(def exercise (async/chan))

;; enable cljs to print to the JS console of the browser
(enable-console-print!)

;; print to the console
(println "Hello, World 4!")

and build.boot

(set-env!
 :source-paths #{"src"}
 :resource-paths #{"html"}

 :dependencies '[[adzerk/boot-cljs "1.7.170-3"]
                 [org.clojure/core.async "0.2.371"]])

(require '[adzerk.boot-cljs :refer [cljs]])

The original working project had the same basic structure except for the require and def of a channel in the core.cljs file and the dependency added in the build.boot

Solution

That's because in ClojureScript, core.async lives under cljs.core.async rather than clojure.core.async.

So you just need to change your ns form to:

(ns exemplo-cljs.core
  (:require [cljs.core.async :as async]))