npm testcase

case.js

var npm = require("npm")
var path = require("path")

npm.load({ prefix: path.join(process.env.HOME, ".orchestrator") }, function(e, npm) {
  npm.commands.install(["method"], function(err, _) {
    npm.commands.ls([], console.log)
  })
})

output

npm http GET https://registry.npmjs.org/method
npm http 304 https://registry.npmjs.org/method
[email protected] ../../.orchestrator/node_modules/method
/Users/isaacs/.orchestrator
└── [email protected]

null { dependencies: 
   { method: 
      { name: 'method',
        id: 'method',
        version: '0.1.1',
        description: 'Functional polymorphic method dispatch',
        keywords: [Object],
        author: [Object],
        homepage: 'https://github.com/Gozala/method',
        main: './core.js',
        repository: [Object],
        bugs: [Object],
        devDependencies: [Object],
        scripts: [Object],
        licenses: [Object],
        readme: '# method\n\n[![Build Status](https://secure.travis-ci.org/Gozala/method.png)](http://travis-ci.org/Gozala/method)\n\nLibrary provides an API for defining polymorphic methods that dispatch on the\nfirst argument type. This provides a powerful way for decouple abstraction\ninterface definition from an actual implementation per type, without risks\nof interference with other libraries.\n\n### Motivation\n\n  - Provide a high-performance, dynamic polymorphism construct as an\n    alternative to existing object methods that does not provides any\n    mechanics for guarding against name conflicts.\n  - Allow independent extension of types, and implementations of methods\n    on types, by different parties.\n\n## Install\n\n    npm install method\n\n## Use\n\n```js\nvar Method = require(\'method\')\n\n// Define `isWatchable` method that can be implemented for any type.\nvar isWatchable = Method()\n\n// If you call it on any object it will\n// throw as nothing implements that method yet.\n//isWatchable({}) // => Exception: Method is not implemented\n\n// If you define private method on `Object.prototype`\n// all objects will inherit it.\nObject.prototype[isWatchable] = function() {\n  return false;\n}\n\nisWatchable({}) // => false\n\n\n// Although `isWatchable` property above will be enumerable and there for\n// may damage some assumbtions made by other libraries. There for it\'s\n// recomended to use built-in helpers methods that will define extension\n// without breaking assumbtions made by other libraries:\n\nisWatchable.define(Object, function() { return false })\n\n\n// There are primitive types in JS that won\'t inherit methods from Object:\nisWatchable(null) // => Exception: Method is not implemented\n\n// One could either implement methods for such types:\nisWatchable.define(null, function() { return false })\nisWatchable.define(undefined, function() { return false })\n\n// Or simply define default implementation:\nisWatchable.define(function() { return false })\n\n// Alternatively default implementation may be provided at creation:\nisWatchable = Method(function() { return false })\n\n// Method dispatches on an first argument type. That allows us to create\n// new types with an alternative implementations:\nfunction Watchable() {}\nisWatchable.define(Watchable, function() { return true })\n\n// This will make all `Watchable` instances watchable!\nisWatchable(new Watchable()) // => true\n\n// Arbitrary objects can also be extended to implement given method. For example\n// any object can simply made watchable:\nfunction watchable(object) {\n  return isWatchable.implement(objct, function() { return true })\n}\n\nisWatchable(watchable({})) // => true\n\n// Full protocols can be defined with such methods:\nvar _watchers = Method()\nvar watchers = Method()\nvar watch = Method()\nvar unwatch = Method()\n\nwatchers.define(Watchable, function(target) {\n  return target[_watchers] || (target[_watchers] = [])\n})\n\nwatch.define(Watchable, function(target, watcher) {\n  var observers = watchers(target)\n  if (observers.indexOf(watcher) < 0) observers.push(watcher)\n  return target\n})\nunwatch.define(Watchable, function(target, watcher) {\n  var observers = watchers(target)\n  var index = observers.indexOf(watcher)\n  if (observers.indexOf(watcher) >= 0) observers.unshift(watcher)\n  return target\n})\n\n// Define type Port that inherits form Watchable\n\nfunction Port() {}\nPort.prototype = Object.create(Watchable.prototype)\n\nvar emit = Method()\nemit.define(Port, function(port, message) {\n  watchers(port).slice().forEach(function(watcher) {\n    watcher(message)\n  })\n})\n\nvar p = new Port()\nwatch(p, console.log)\nemit(p, \'hello world\') // => info: "hello world"\n```\n',
        readmeFilename: 'Readme.md',
        _id: '[email protected]',
        realName: 'method',
        dependencies: {},
        path: '/Users/isaacs/.orchestrator/node_modules/method',
        realPath: '/Users/isaacs/.orchestrator/node_modules/method',
        link: undefined,
        parent: [Circular],
        depth: 1 } },
  path: '/Users/isaacs/.orchestrator',
  realName: undefined,
  realPath: '/Users/isaacs/.orchestrator',
  link: undefined,
  depth: 0 } { dependencies: { method: { version: '0.1.1' } } }