NPM throws an error when using the outdated() API method after using ls().

error.txt

/Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/lib/cache.js:212
  var p = url.parse(spec.replace(/^git\+/, "git")) || {}
                         ^
TypeError: Object #<Object> has no method 'replace'
    at add (/Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/lib/cache.js:212:26)
    at Function.add (/Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/lib/cache.js:174:10)
    at shouldUpdate (/Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/lib/outdated.js:141:9)
    at /Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/lib/outdated.js:115:7
    at /Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/node_modules/slide/lib/async-map.js:54:35
    at Array.forEach (native)
    at /Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/node_modules/slide/lib/async-map.js:54:11
    at Array.forEach (native)
    at asyncMap (/Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/node_modules/slide/lib/async-map.js:53:8)
    at next (/Users/slaskis/Desktop/Ideas/nodepress/node_modules/npm/lib/outdated.js:114:5)

npm-error.js

var npm = require('npm');


npm.load(function(){
  
  npm.commands.ls() // if removed it doesn't throw

  npm.commands.outdated()

})

package.json

{
  "author": "Robert Sköld <[email protected]>",
  "name": "fail",
  "description": "A test case with npm",
  "version": "0.1.0",
  "dependencies": {
    "npm": "~1.0.106"
  }
}