refator: use error-first-handler

src/post.js

@@ -8,6 +8,8 @@ var GitHubApi = require('github')
 var parseSlug = require('parse-github-repo-url')
 var parseUrl = require('github-url-from-git')
 
+var efh = require('../lib/error').efh
+
 var github = new GitHubApi({
   version: '3.0.0'
 })
@@ -16,18 +18,14 @@ module.exports = function (options, cb) {
   var pkg = JSON.parse(readFile('./package.json'))
   var repository = pkg.repository ? pkg.repository.url : null
 
-  if (!repository) return cb('Package must have a repository')
+  if (!repository) return cb(new Error('Package must have a repository'))
 
   changelog({
     version: pkg.version,
     repository: parseUrl(repository),
     file: false
-  }, function(err, log) {
-    if (err) return cb(err)
-
-    exec('git rev-parse HEAD', function(err, hash) {
-      if (err) return cb(err)
-
+  }, efh(cb)(function (log) {
+    exec('git rev-parse HEAD', efh(cb)(function (hash) {
       var ghRepo = parseSlug(repository)
       var release = {
         owner: ghRepo[0],
@@ -43,10 +41,9 @@ module.exports = function (options, cb) {
         token: options.token
       })
 
-      github.releases.createRelease(release, function(err) {
-        if (err) return cb(err)
+      github.releases.createRelease(release, efh(cb)(function () {
         cb(null, true)
-      })
-    })
-  })
+      }))
+    }))
+  }))
 }