npm ERR! addLocal Could not install /var/folders/j5/6zhmyqn12js3n3z_bdg0hm_c0000gn/T/npm-60758-21108bca/git-cache-63811f9c722f/3bce55b6546f31ce0c62f4cf81f041e9e8606e42
npm ERR! Darwin 14.4.0
npm ERR! argv "node" "/usr/local/bin/npm" "install"
npm ERR! node v0.12.0
npm ERR! npm  v2.5.1
npm ERR! code EISDIR
npm ERR! errno -21

npm ERR! EISDIR, read
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR!     <http://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR!     /Volumes/HOME/Users/andyearnshaw/Development/Intl.js/npm-debug.log

$ ls /var/folders/j5/6zhmyqn12js3n3z_bdg0hm_c0000gn/T/npm-60758-21108bca/git-cache-63811f9c722f/3bce55b6546f31ce0c62f4cf81f041e9e8606e42
README.md   esprima.js

├─┬ grunt@0.4.5
│ ├── async@0.1.22
│ ├── coffee-script@1.3.3
│ ├── colors@0.6.2
│ ├── dateformat@1.0.2-1.2.3
│ ├── eventemitter2@0.4.14
│ ├── exit@0.1.2
│ ├─┬ findup-sync@0.1.3
│ │ ├─┬ glob@3.2.11
│ │ │ ├── inherits@2.0.1
│ │ │ └─┬ minimatch@0.3.0
│ │ │   ├── lru-cache@2.6.4
│ │ │   └── sigmund@1.0.1
│ │ └── lodash@2.4.2
│ ├── getobject@0.1.0
│ ├─┬ glob@3.1.21
│ │ ├── graceful-fs@1.2.3
│ │ └── inherits@1.0.0
│ ├─┬ grunt-legacy-log@0.1.2
│ │ ├── grunt-legacy-log-utils@0.1.1
│ │ ├── lodash@2.4.2
│ │ └── underscore.string@2.3.3
│ ├── grunt-legacy-util@0.2.0
│ ├── hooker@0.2.3
│ ├── iconv-lite@0.2.11
│ ├─┬ js-yaml@2.0.5
│ │ ├─┬ argparse@0.1.16
│ │ │ ├── underscore@1.7.0
│ │ │ └── underscore.string@2.4.0
│ │ └── esprima@1.0.4