[ClojureScript] Weird unexpected error when building a target for the second time.
I turned on verbosity of cljsbuild to try to understand what's going on, the
first time I run lein cljsbuild once I see this:
$ lein cljsbuild once
Compiling ClojureScript.
Compiling "resources/public/js/app.js" from ("src/cljs" "src/cljc"
"env/dev/cljs")...
... lots of output
Successfully compiled "resources/public/js/app.js" in 13.321 seconds.
Compiling "target/js/server-side.js" from ["src/cljs" "src/cljc" "src/node"]...
Analyzing
jar:file:/Users/pupeno/.m2/repository/org/clojure/clojurescript/1.7.122/clojurescript-1.7.122.jar!/cljs/core.cljs
Analyzing
jar:file:/Users/pupeno/.m2/repository/org/clojure/clojurescript/1.7.122/clojurescript-1.7.122.jar!/cljs/nodejs.cljs
Compiling target/js/server-side/cljs/nodejs.cljs
Compiling target/js/server-side/cljs/core.cljs
Applying optimizations :simple to 12 sources
Successfully compiled "target/js/server-side.js" in 16.043 seconds.
Note that it said it was optimizing 12 sources. When I run it again, with a
small change so that target/js/server-side.js needs to be recompiled, this
happens:
$ lein cljsbuild once
Compiling ClojureScript.
Compiling "target/js/server-side.js" from ["src/cljs" "src/cljc" "src/node"]...
Analyzing
jar:file:/Users/pupeno/.m2/repository/org/clojure/clojurescript/1.7.122/clojurescript-1.7.122.jar!/cljs/core.cljs
Analyzing
jar:file:/Users/pupeno/.m2/repository/org/clojure/clojurescript/1.7.122/clojurescript-1.7.122.jar!/cljs/nodejs.cljs
Compiling target/js/server-side/cljs/nodejs.cljs
Compiling target/js/server-side/cljs/core.cljs
Applying optimizations :simple to 13 sources
Sep 16, 2015 11:29:22 PM com.google.javascript.jscomp.LoggerErrorManager println
SEVERE: cljs.nodejs:1: ERROR - namespace "cljs.nodejs" cannot be provided twice
goog.provide('cljs.nodejs');
^
Sep 16, 2015 11:29:22 PM com.google.javascript.jscomp.LoggerErrorManager
printSummary
WARNING: 1 error(s), 0 warning(s)
ERROR: JSC_DUPLICATE_NAMESPACE_ERROR. namespace "cljs.nodejs" cannot be
provided twice at cljs.nodejs line 1 : 0
Successfully compiled "target/js/server-side.js" in 11.125 seconds.
So how now it says it's optimizing 13 sources and boom! it fails. Any ideas why?
Going into a bit of details, my project.clj looks like this:
(defproject projectx "0.1.0-SNAPSHOT"
:description "FIXME: write description"
: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"]
[ring-server "0.4.0"]
[cljsjs/react "0.13.3-1"]
[reagent "0.5.1"]
[reagent-forms "0.5.9"]
[reagent-utils "0.1.5"]
[ring "1.4.0"]
[ring/ring-defaults "0.1.5"]
[prone "0.8.2"]
[compojure "1.4.0"]
[hiccup "1.0.5"]
[environ "1.0.1"]
[org.clojure/clojurescript "1.7.122" :scope "provided"]
[bidi "1.21.0"]
[kibu/pushy "0.3.3"]
[aleph "0.4.0"]]
:plugins [[lein-environ "1.0.0"]
[lein-asset-minifier "0.2.2"]
[lein-npm "0.6.1"]]
:ring {:handler projectx.handler/app
:uberwar-name "projectx.war"}
:min-lein-version "2.5.0"
:uberjar-name "projectx.jar"
:main projectx.server
:clean-targets ^{:protect false} [:target-path
[:cljsbuild :builds :app :compiler
:output-dir]
[:cljsbuild :builds :app :compiler
:output-to]]
:source-paths ["src/clj" "src/cljc"]
:minify-assets {:assets {"resources/public/css/site.min.css"
"resources/public/css/site.css"}}
:cljsbuild {:builds {:app {:source-paths ["src/cljs" "src/cljc"]
:compiler {:output-to
"resources/public/js/app.js"
:output-dir
"resources/public/js/app"
:main "projectx.dev"
:verbosetrue}}
:server-side {:source-paths ["src/cljs" "src/cljc"
"src/node"]
:compiler {:output-to
"target/js/server-side.js"
:output-dir
"target/js/server-side"
:target:nodejs
:main
"projectx.node"
:optimizations :simple
:verbose true
:npm {:dependencies [[xmlhttprequest "1.7.0"]
[express "4.13.3"]]}
:profiles {:dev {:repl-options {:init-ns projectx.repl}
:dependencies [[ring/ring-mock "0.3.0"]
[ring/ring-devel "1.4.0
[ClojureScript] Puzzling error: Namespace "com.cognitect.transit.util" already declared.
Hello,
I'm working on loading and running my ClojureScript application on Nashorn, a
JavaScript implementation that runs inside Java. The purpose is to pre-render
single page applications. I managed to do it with avery simple application and,
in case anybody is curious, I'm publishing the results here:
https://carouselapps.com/2015/09/11/isomorphic-clojurescriptjavascript-for-pre-rendering-single-page-applications-part-1/
When trying to run bigger applications I'm running into lots of little errors
and issues and solving them one by one. There's one error though that is really
puzzling. When I require ajax.core, as in:
(ns projectx.handlers
(:require [ajax.core :as ajax]))
I get this error:
Error: Namespace "com.cognitect.transit.util" already declared.
The traceback is:
Caused by: :19664:6 Error: Namespace "com.cognitect.transit.util" already
declared.
at
jdk.nashorn.internal.objects.NativeError.initException(NativeError.java:137)
at jdk.nashorn.internal.objects.NativeError.(NativeError.java:102)
at jdk.nashorn.internal.objects.NativeError.(NativeError.java:106)
at jdk.nashorn.internal.objects.NativeError.(NativeError.java:110)
at
jdk.nashorn.internal.objects.NativeError.constructor(NativeError.java:129)
at
jdk.nashorn.internal.scripts.Script$Recompilation$1544$602593A$\^eval\_.provide(:19664)
at
jdk.nashorn.internal.scripts.Script$Recompilation$1681$\^eval\_.:program$:split-9(:57262)
at jdk.nashorn.internal.scripts.Script$1285$\^eval\_.:program()
at
jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:636)
at
jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:229)
at
jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:387)
at
jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:437)
... 66 more
line 57262 indeed contains:
goog.provide("com.cognitect.transit.util");
Trying to figure out how it could be duplicated:
$ grep -R provide.*com\.cognitect\.transit\.util .
./resources/public/js/app/com/cognitect/transit/util.js:goog.provide("com.cognitect.transit.util");
./resources/public/js/server-side/com/cognitect/transit/util.js:goog.provide("com.cognitect.transit.util");
./resources/public/js/server-side.js:goog.provide("com.cognitect.transit.util");
sever-side.js is the only file that is being loaded in Nashorn. Nothing from
app should ever be loaded as it is a different build target and I don't
understand how util.js could be loaded, but just in case I commented it out and
I keep receiving the same error. Which only happens when I'm loading ajax.core.
Any ideas what's going on here? This one left me scratching my head as no
matter how I poke it, nothing makes sense.
Thanks.
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