check version when installing remote template

Author: yyx990803

bin/vue-init

@@ -10,6 +10,7 @@ var ora = require('ora')
 var chalk = require('chalk')
 var inquirer = require('inquirer')
 var logger = require('../lib/logger')
+var checkVersion = require('../lib/check-version')
 
 /**
  * Usage.
@@ -103,18 +104,20 @@ function run () {
     if (!hasSlash) {
       template = 'vuejs-templates/' + template
     }
-    // download and generate
-    var tmp = '/tmp/vue-template-' + uid()
-    var spinner = ora('downloading template')
-    spinner.start()
-    download(template, tmp, { clone: clone }, function (err) {
-      spinner.stop()
-      if (err) logger.fatal(err)
-      generate(tmp, to, function (err) {
+    checkVersion(function () {
+      // download and generate
+      var tmp = '/tmp/vue-template-' + uid()
+      var spinner = ora('downloading template')
+      spinner.start()
+      download(template, tmp, { clone: clone }, function (err) {
+        spinner.stop()
         if (err) logger.fatal(err)
-        rm(tmp)
-        console.log()
-        logger.success('Generated "%s".', name)
+        generate(tmp, to, function (err) {
+          if (err) logger.fatal(err)
+          rm(tmp)
+          console.log()
+          logger.success('Generated "%s".', name)
+        })
       })
     })
   }

lib/check-version.js

@@ -0,0 +1,23 @@
+var request = require('request')
+var semver = require('semver')
+var chalk = require('chalk')
+
+module.exports = function (done) {
+  request({
+    url: 'http://registry.npmjs.org/vue-cli',
+    timeout: 1000
+  }, function (err, res, body) {
+    if (!err && res.statusCode == 200) {
+      var latestVersion = JSON.parse(body)['dist-tags'].latest
+      var localVersion = require('../package.json').version
+      if (semver.lt(localVersion, latestVersion)) {
+        console.log(chalk.yellow('  A newer version of vue-cli is available.'))
+        console.log()
+        console.log('  latest:    ' + chalk.green(latestVersion))
+        console.log('  installed: ' + chalk.red(localVersion))
+        console.log()
+      }
+    }
+    done()
+  })
+}

package.json

@@ -40,6 +40,7 @@
     "read-metadata": "^1.0.0",
     "request": "^2.67.0",
     "rimraf": "^2.5.0",
+    "semver": "^5.1.0",
     "uid": "0.0.2"
   },
   "devDependencies": {