refactor(pre): use gitHead information from registry

src/pre.js

@@ -5,17 +5,17 @@ var fs = require('fs')
 var semver = require('semver')
 
 var type = require('../lib/type')
-var version = require('../lib/version')
+var npmInfo = require('../lib/npm-info')
 var efh = require('../lib/error').efh
 
 module.exports = function (options, cb) {
-  type(efh(cb)(function (type) {
-    if (!type) return cb(null, null)
-
-    var path = './package.json'
-    var pkg = JSON.parse(fs.readFileSync(path))
-    version(pkg, efh(cb)(function (version, unpublished) {
-      pkg.version = unpublished ? '1.0.0' : semver.inc(version, type)
+  var path = './package.json'
+  var pkg = JSON.parse(fs.readFileSync(path))
+  if (!pkg.name) return cb(new Error('Package must have a name'))
+  npmInfo(pkg.name, efh(cb)(function (res) {
+    type(res.gitHead, efh(cb)(function (type) {
+      if (!type) return cb(null, null)
+      pkg.version = !res.version ? '1.0.0' : semver.inc(res.version, type)
       if (!options.debug) fs.writeFileSync(path, JSON.stringify(pkg, null, 2))
 
       cb(null, pkg.version)