HomebrewでSpiderMonkeyをインストール

今更ながらコンソールでJavaScriptを実行するために。
以前やろうとしたときはたぶんHomebrewに慣れてなかったから挫折したんだろうなー。

➜  ~  brew install spidermonkey
==> Installing spidermonkey dependency: nspr
==> Downloading http://ftp.mozilla.org/pub/mozilla.org/nspr/releases/v4.8.8/src/nspr-4.8.8.tar.gz
######################################################################## 100.0%
==> ./configure --prefix=/usr/local/Cellar/nspr/4.8.8 --enable-strip --enable-optimize --enable-64bit
==> make
==> make install
Warning: Non-executables were installed to "bin".
Installing non-executables to "bin" is bad practice.
The offending files are:
/usr/local/Cellar/nspr/4.8.8/bin/prerr.properties
==> Summary
/usr/local/Cellar/nspr/4.8.8: 99 files, 1.5M, built in 28 seconds
==> Installing spidermonkey
==> Downloading http://ftp.mozilla.org/pub/mozilla.org/js/js185-1.0.0.tar.gz
######################################################################## 100.0%
==> Downloading http://ftpmirror.gnu.org/autoconf/autoconf-2.13.tar.gz
######################################################################## 100.0%
==> ./configure --program-suffix=213 --prefix=/private/tmp/spidermonkey-bAim/js-1.8.5/ac213
==> make install
==> /private/tmp/spidermonkey-bAim/js-1.8.5/ac213/bin/autoconf213
==> ../js/src/configure --prefix=/usr/local/Cellar/spidermonkey/1.8.5 --enable-readline --enable-threadsafe --with-system-nspr
==> make
==> make install
==> Caveats
This formula installs Spidermonkey 1.8.5.
If you are trying to compile MongoDB from scratch, you will need 1.7.x instead.
==> Summary
/usr/local/Cellar/spidermonkey/1.8.5: 101 files, 11M, built in 4.0 minutes
➜  ~  js
zsh: correct 'js' to 'jps' [nyae]? n
js> print('Hello' + 'World.');
HelloWorld.
js> quit();
➜  ~