--- /dev/null
+module.exports = loadUid
+
+var getUid = require("uid-number")
+
+// Call in the context of a npmconf object
+
+function loadUid (cb) {
+ // if we're not in unsafe-perm mode, then figure out who
+ // to run stuff as. Do this first, to support `npm update npm -g`
+ if (!this.get("unsafe-perm")) {
+ getUid(this.get("user"), this.get("group"), cb)
+ } else {
+ process.nextTick(cb)
+ }
+}