Node fails with :whitespace, works with :simple


  • Type: Defect Defect
  • Status: Closed Closed
  • Priority: Minor Minor
  • Resolution: Completed
  • Affects Version/s: None
  • Fix Version/s: None
  • Component/s: None
  • Labels:
  • Environment:
    NodeJS 0.6.1
    MacOSX Lion


Running the example from Node fails if using :whitespace optimizations, but works when using :simple. The problem seems to be missing object literals.

The source is:

$ cat src/testing-cljs-node/hello.cljs 
(ns testing-cljs-node.hello)

(defn start [& _]
  (println "Hello World!"))

(set! *main-cli-fn* start)

Here is the compilation that results in the broken code:

$ cljsc src/testing-cljs-node/hello.cljs '{:optimizations :whitespace :pretty-print true :target :nodejs}' > out/hello.js
$ node out/hello.js

        throw e; // process.nextTick error, or 'error' event on first tick
TypeError: Cannot set property 'Unicode' of undefined
    at Object.<anonymous> (/Users/ulrik/Source/testing-cljs-node/out/hello.js:487:21)
    at Module._compile (module.js:432:26)
    at Object..js (module.js:450:10)
    at Module.load (module.js:351:31)
    at Function._load (module.js:310:12)
    at Array.0 (module.js:470:10)
    at EventEmitter._tickCallback (node.js:192:40)

When changing the optimizations to :simple, however, it works:

$ cljsc src/testing-cljs-node/hello.cljs '{:optimizations :simple :pretty-print true :target :nodejs}' > out/hello.js
$ node out/hello.js
The "sys" module is now called "util". It should have a similar interface.
Hello World!

The offending line 487 in the :whitespace code:

goog.string.Unicode = {NBSP:"\u00a0"};  // line 487

In the working :simple code, the corresponding lines looks like this:

goog.string = {};
goog.string.Unicode = {NBSP:"\u00a0"};  // line 367

If I fix that by adding a line that creates the object, I get another error on line 901:

goog.userAgent.jscript.ASSUME_NO_JSCRIPT = false;  // line 901

In the working code, it looks like this:

goog.userAgent = {};
goog.userAgent.jscript = {};
goog.userAgent.jscript.ASSUME_NO_JSCRIPT = !1;  // line 683

And if I fix that, I get another error on line 975:

goog.debug.Error = function(opt_msg) {  // line 975

The working code:

goog.debug = {};
goog.debug.Error = function(a) {  // line 730

etc etc


Paul deGrandis made changes -
Field Original Value New Value
Comment [ This could be shim'd with nclosure

nclosure seems to have support from both the Google Closure guys and the core Node.js guys.
The addition means another lib packaged with ClojureScript and a preamble line (`require('nclosure').nclosure();`) if the target is :nodejs.

Thoughts? ]
David Nolen made changes -
Status Open [ 1 ] Resolved [ 5 ]
Resolution Completed [ 1 ]
David Nolen made changes -
Status Resolved [ 5 ] Closed [ 6 ]


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