Figwheel nrepl connection to LightTable not working

[juanpr2]

LightTable gives an error when trying to connect to Figwheel's repl.

Following the steps:

1. Start figwheel on the project from the terminal lein figwheel
2. Open the project in LightTable
3. Add a Connection, choose Clojure (remote nRepl) as a client type
4. Input server localhost:7888

The blocks spin with the message Connecting.., but nothing happens.

I'm using LightTable version 0.8.0-alpha, Binary version 0.31.1 on a Mac with OS X 10.10.5.

This is my project.clj

(defproject hello-om "0.1.0-SNAPSHOT"
  :description "FIXME: write this!"
  :url "http://example.com/FIXME"
  :license {:name "Eclipse Public License"
            :url "http://www.eclipse.org/legal/epl-v10.html"}

  :dependencies [[org.clojure/clojure "1.7.0"]
                 [org.clojure/clojurescript "1.7.170"]
                 [devcards "0.2.1"]
                 [org.omcljs/om "1.0.0-alpha23-SNAPSHOT"]
                 [lein-light-nrepl "0.2.0"]]

  :plugins [[lein-cljsbuild "1.1.1"]
            [lein-figwheel "0.5.0-1"]]

  :clean-targets ^{:protect false} ["resources/public/js/compiled"
                                    "target"]

  :source-paths ["src"]

  :repl-options { :nrepl-middleware [lighttable.nrepl.handler/lighttable-ops]}

  :cljsbuild {
              :builds [{:id "devcards"
                        :source-paths ["src"]
                        :figwheel { :devcards true}  ;; <- note this
                        :compiler { :main       "hello-om.start-ui"
                                    :asset-path "js/compiled/devcards_out"
                                    :output-to  "resources/public/js/compiled/hello_om_devcards.js"
                                    :output-dir "resources/public/js/compiled/devcards_out"
                                    :source-map-timestamp true}}
                       {:id "dev"
                        :source-paths ["src"]
                        :figwheel true
                        :compiler {:main       "hello-om.draft"
                                   :asset-path "js/compiled/out"
                                   :output-to  "resources/public/js/compiled/hello_om.js"
                                   :output-dir "resources/public/js/compiled/out"
                                   :source-map-timestamp true}}
                       {:id "prod"
                        :source-paths ["src"]
                        :compiler {:main       "hello-om.start-ui"
                                   :asset-path "js/compiled/out"
                                   :output-to  "resources/public/js/compiled/hello_om.js"
                                   :optimizations :advanced}}]}

  :figwheel { :css-dirs ["resources/public/css"]
              :nrepl-port 7888})

Any help is appreciated, thanks.

[rundis]

I'm not all that familiar with the nrepl features of figwheel and what it is supposed to give me of benefits as opposed to using the lighttable with cljs browser eval. Once we do figure it out, we should probably add a section about Light Table on the figwheel wiki :-)

Here's what I did get something up and running though:

• Firstly I had to change to [org.omcljs/om "1.0.0-alpha23"] to get anything going. I also added [figwheel-sidecar "0.5.0-1"] as a dep, but not sure if that's needed.
• I also commented out the nrepl-port for figwheel
• Then from the command line I just did a plain old lein repl
• From Light Table I choose to connect to a clojure remote, using the port lein nrepl assigned
• Connected no problemo
• To start the figwheelery:
  • Open a editor/set syntax to clojure (should be possible to use instarepl, but I don't use it much so)
  • Eval (use 'figwheel-sidecar.repl-api)
  • Eval (start-figwheel!)
• To eval clojurescript
  • Open your index.html or whatever that includes the compiled cljs (I did it with the internal LT browser for simplicity) -> Should get something in the console telling you that a figwheel connection is getting established
  • Open another editor/set syntax to clojurescript
  • Eval (ns user.whatever (:require [hello-om.start-ui :as ui]))
  • Eval stuff...

If I edit cljs files all workes as expected, the compiled js is loaded into the browser and so is then available for cljs evals in LT.

I'm still confused about piggieback, weasels and whatnot. But I'm not sure why you would ever need it from Light Table as it ships with it's own middleware that handles eval in either LT internally (very limited clojurescript version support), internal browser or external browser.

hope this helps.

[cldwalker]

Here's a screenshot of LT working with figwheel. I'll have a wiki page up soon:

[cldwalker]

Made https://github.com/bhauman/lein-figwheel/wiki/Running-figwheel-with-LightTable. Closing for now but can reopen if it doesn't work and you can give me steps like ones I listed on the wiki page

[jiangts]

Curious if there's any way to make LT connect to an external figwheel REPL (not an internal figwheel browser)?

My goal is to onboard a couple people onto a ClojureScript project without throwing Clojure, Emacs/Vim, and Paredit at them all at the same time, but I'd still like them to have an in-editor REPL. For some reason when using the internal Figwheel REPL a couple Chrome APIs aren't working, and I can't see the dev console.

[sbauer322]

Unfortunately, I don't have enough exposure on the topic to be of use but perhaps @rundis or @cldwalker know something?