update packages to latest version

node_modules/npm/lib/config/set-user.js

@@ -0,0 +1,29 @@
+module.exports = setUser
+
+var assert = require("assert")
+var path = require("path")
+var fs = require("fs")
+var mkdirp = require("mkdirp")
+
+function setUser (cb) {
+  var defaultConf = this.root
+  assert(defaultConf !== Object.prototype)
+
+  // If global, leave it as-is.
+  // If not global, then set the user to the owner of the prefix folder.
+  // Just set the default, so it can be overridden.
+  if (this.get("global")) return cb()
+  if (process.env.SUDO_UID) {
+    defaultConf.user = +(process.env.SUDO_UID)
+    return cb()
+  }
+
+  var prefix = path.resolve(this.get("prefix"))
+  mkdirp(prefix, function (er) {
+    if (er) return cb(er)
+    fs.stat(prefix, function (er, st) {
+      defaultConf.user = st && st.uid
+      return cb(er)
+    })
+  })
+}