node_modules/npm/test/tap/00-config-setup.js

var fs = require("graceful-fs")
var path = require("path")
var userconfigSrc = path.resolve(__dirname, "..", "fixtures", "config", "userconfig")
exports.userconfig = userconfigSrc + "-with-gc"
exports.globalconfig = path.resolve(__dirname, "..", "fixtures", "config", "globalconfig")
exports.builtin = path.resolve(__dirname, "..", "fixtures", "config", "builtin")
exports.malformed = path.resolve(__dirname, "..", "fixtures", "config", "malformed")
exports.ucData =
  { globalconfig: exports.globalconfig,
    email: "i@izs.me",
    "env-thing": "asdf",
    "init.author.name": "Isaac Z. Schlueter",
    "init.author.email": "i@izs.me",
    "init.author.url": "http://blog.izs.me/",
    "init.version": "1.2.3",
    "proprietary-attribs": false,
    "npm:publishtest": true,
    "_npmjs.org:couch": "https://admin:password@localhost:5984/registry",
    "npm-www:nocache": "1",
    nodedir: "/Users/isaacs/dev/js/node-v0.8",
    "sign-git-tag": true,
    message: "v%s",
    "strict-ssl": false,
    "tmp": process.env.HOME + "/.tmp",
    _auth: "dXNlcm5hbWU6cGFzc3dvcmQ=",
    _token:
     { AuthSession: "yabba-dabba-doodle",
       version: "1",
       expires: "1345001053415",
       path: "/",
       httponly: true } }

// set the userconfig in the env
// unset anything else that npm might be trying to foist on us
Object.keys(process.env).forEach(function (k) {
  if (k.match(/^npm_config_/i)) {
    delete process.env[k]
  }
})
process.env.npm_config_userconfig = exports.userconfig
process.env.npm_config_other_env_thing = 1000
process.env.random_env_var = "asdf"
process.env.npm_config__underbar_env_thing = "underful"
process.env.NPM_CONFIG_UPPERCASE_ENV_THING = 42

exports.envData = {
  userconfig: exports.userconfig,
  "_underbar-env-thing": "underful",
  "uppercase-env-thing": "42",
  "other-env-thing": "1000"
}
exports.envDataFix = {
  userconfig: exports.userconfig,
  "_underbar-env-thing": "underful",
  "uppercase-env-thing": 42,
  "other-env-thing": 1000
}

var projectConf = path.resolve(__dirname, '..', '..', '.npmrc')
try {
  fs.statSync(projectConf)
} catch (er) {
  // project conf not found, probably working with packed npm
  fs.writeFileSync(projectConf, 'save-prefix = ~\nproprietary-attribs = false\n')
}

var projectRc = path.join(__dirname, '..', 'fixtures', 'config', '.npmrc')
try {
  fs.statSync(projectRc)
} catch (er) {
  // project conf not found, probably working with packed npm
  fs.writeFileSync(projectRc, 'just = testing')
}

if (module === require.main) {
  // set the globalconfig in the userconfig
  var uc = fs.readFileSync(userconfigSrc)
  var gcini = "globalconfig = " + exports.globalconfig + "\n"
  fs.writeFileSync(exports.userconfig, gcini + uc)

  console.log("1..1")
  console.log("ok 1 setup done")
}