A ClojureScript REPL running on Node.JS
Branch: master
Clone or download
Type Name Latest commit message Commit time
Failed to load latest commit information.
cljs-noderepl Fix #18 Pass compiler options to repl-env together with :target :nodejs Aug 13, 2014
lein-noderepl Tag for 0.1.11 release. Feb 9, 2014
.gitignore Tag for 0.1.11 release. Feb 9, 2014
README.md Tag for 0.1.11 release. Feb 9, 2014
project.clj Tag for 0.1.11 release. Feb 9, 2014



Provides a ClojureScript REPL running on Node.JS.


You must have Node version 0.8.x or higher installed.

Leiningen Plugin

To setup the Leiningen plugin, add this to your project.clj or ~/.lein/profiles.clj:

:plugins [[org.bodil/lein-noderepl "0.1.11"]]

Then, start the REPL like this:

$ lein trampoline noderepl

In-Project Usage

Add the following dependency to your project.clj:

[org.bodil/cljs-noderepl "0.1.11"]

To launch the REPL the hard way, run lein repl and enter the following:

(require '[cljs.repl :as repl] '[cljs.repl.node :as node])
(repl/repl (node/repl-env))


The REPL is connected to a live Node process running a sandboxed environment, which provides all of Node's available global variables.

As an example, here's the standard Node hello world, in REPL ready ClojureScript:

(let [http (js/require "http")
      handler (fn [req res] (.end res "Hello sailor!"))
      server (.createServer http handler)]
  (.listen server 1337))

Readline Support

If you have rlwrap installed, the following provides basic readline and paren matching support:

rlwrap -r -m -q '\"' -b "(){}[],^%3@\";:'" lein trampoline noderepl

nREPL With Piggieback

You can get cljs-noderepl running on an nREPL server through Piggieback, though it's a bit fiddly. Here's how.

Add the cljs-noderepl dependency to your project.clj (it will bring in Piggieback transitively):

[org.bodil/cljs-noderepl "0.1.11"]

You may want to add this dependency to your :dev profile so it's not carried along when you deploy your library/application.

Then, add the Piggieback nREPL middleware, also in project.clj:

:repl-options {:nrepl-middleware [cemerick.piggieback/wrap-cljs-repl]}

Now, launch nREPL through Leiningen as usual - lein repl - and connect to it from wherever you prefer. You'll need to start the ClojureScript REPL manually once you have a Clojure REPL prompt:

user=> (require '[cljs.repl.node :as node])
user=> (node/run-node-nrepl)


Copyright © 2012 Bodil Stokke.

Distributed under the Eclipse Public License, the same as Clojure.