* first action! (#1)

node_modules/npm-registry-fetch/auth.js

@@ -0,0 +1,57 @@
+'use strict'
+
+const config = require('./config.js')
+const url = require('url')
+
+module.exports = getAuth
+function getAuth (registry, opts) {
+  if (!registry) { throw new Error('registry is required') }
+  opts = config(opts)
+  let AUTH = {}
+  const regKey = registry && registryKey(registry)
+  if (opts.forceAuth) {
+    opts = opts.forceAuth
+  }
+  const doKey = (key, alias) => addKey(opts, AUTH, regKey, key, alias)
+  doKey('token')
+  doKey('_authToken', 'token')
+  doKey('username')
+  doKey('password')
+  doKey('_password', 'password')
+  doKey('email')
+  doKey('_auth')
+  doKey('otp')
+  doKey('always-auth', 'alwaysAuth')
+  if (AUTH.password) {
+    AUTH.password = Buffer.from(AUTH.password, 'base64').toString('utf8')
+  }
+  if (AUTH._auth && !(AUTH.username && AUTH.password)) {
+    let auth = Buffer.from(AUTH._auth, 'base64').toString()
+    auth = auth.split(':')
+    AUTH.username = auth.shift()
+    AUTH.password = auth.join(':')
+  }
+  AUTH.alwaysAuth = AUTH.alwaysAuth === 'false' ? false : !!AUTH.alwaysAuth
+  return AUTH
+}
+
+function addKey (opts, obj, scope, key, objKey) {
+  if (opts[key]) {
+    obj[objKey || key] = opts[key]
+  }
+  if (scope && opts[`${scope}:${key}`]) {
+    obj[objKey || key] = opts[`${scope}:${key}`]
+  }
+}
+
+// Called a nerf dart in the main codebase. Used as a "safe"
+// key when fetching registry info from config.
+function registryKey (registry) {
+  const parsed = url.parse(registry)
+  const formatted = url.format({
+    host: parsed.host,
+    pathname: parsed.pathname,
+    slashes: parsed.slashes
+  })
+  return url.resolve(formatted, '.')
+}