Check for update using a package

bin/now

@@ -8,19 +8,26 @@ const {resolve} = require('path')
 // Packages
 const nodeVersion = require('node-version')
 const isAsyncSupported = require('is-async-supported')
+const updateNotifier = require('update-notifier')
+
+// Ours
+const {error} = require('../lib/error')
+const pkg = require('../package')
 
 if (!isAsyncSupported()) {
   require('async-to-gen/register')
 }
 
-// Ours
-const {error} = require('../lib/error')
-
 if (nodeVersion.major < 6) {
   error('Now requires at least version 6 of Node. Please upgrade!')
   process.exit(1)
 }
 
+// Only check for updates in the npm version
+if (!process.pkg) {
+  updateNotifier({pkg}).notify()
+}
+
 const defaultCommand = 'deploy'
 
 const commands = new Set([

lib/check-update.js

@@ -1,97 +0,0 @@
-// Packages
-const ms = require('ms')
-const fetch = require('node-fetch')
-const chalk = require('chalk')
-const compare = require('semver-compare')
-
-// Ours
-const pkg = require('../package')
-
-const isTTY = process.stdout.isTTY
-
-// if we're not in a tty the update checker
-// will always return a resolved promise
-const resolvedPromise = new Promise(resolve => resolve())
-
-/**
- * Configures auto updates.
- * Sets up a `exit` listener to report them.
- */
-
-function checkUpdate(opts = {}) {
-  if (!isTTY) {
-    // don't attempt to check for updates
-    // if the user is piping or redirecting
-    return resolvedPromise
-  }
-
-  let updateData
-
-  const update = check(opts).then(data => {
-    updateData = data
-
-    // forces the `exit` event upon Ctrl + C
-    process.on('SIGINT', () => {
-      // clean up output after ^C
-      process.stdout.write('\n')
-      process.exit(1)
-    })
-  }, err => console.error(err.stack))
-
-  process.on('exit', () => {
-    if (updateData) {
-      const {current, latest, at} = updateData
-      const ago = ms(Date.now() - at)
-      console.log(`> ${chalk.white.bgRed('UPDATE NEEDED')} ` +
-        `Current: ${current} – ` +
-        `Latest ${chalk.bold(latest)} (released ${ago} ago)`)
-      console.log('> Run `npm install -g now` to update')
-    }
-  })
-
-  return update
-}
-
-function check({debug = false}) {
-  return new Promise(resolve => {
-    if (debug) {
-      console.log('> [debug] Checking for updates.')
-    }
-
-    fetch('https://registry.npmjs.org/now').then(res => {
-      if (res.status !== 200) {
-        if (debug) {
-          console.log(`> [debug] Update check error. NPM ${res.status}.`)
-        }
-
-        resolve(false)
-        return
-      }
-
-      res.json().then(data => {
-        const {latest} = data['dist-tags']
-        const current = pkg.version
-
-        if (compare(latest, pkg.version) === 1) {
-          if (debug) {
-            console.log(`> [debug] Needs update. Current ${current}, latest ${latest}`)
-          }
-
-          resolve({
-            latest,
-            current,
-            at: new Date(data.time[latest])
-          })
-        } else {
-          if (debug) {
-            console.log(`> [debug] Up to date (${pkg.version}).`)
-          }
-
-          resolve(false)
-        }
-      }, () => resolve(false))
-    }, () => resolve(false))
-  })
-}
-
-module.exports = checkUpdate

package.json

@@ -89,7 +89,8 @@
     "spdy": "^3.4.4",
     "split-array": "^1.0.1",
     "text-table": "^0.2.0",
-    "tmp-promise": "^1.0.3"
+    "tmp-promise": "^1.0.3",
+    "update-notifier": "^1.0.3"
   },
   "devDependencies": {
     "alpha-sort": "^2.0.0",