From 7552da1453a8079b9f321dceb6d6f22fca645951 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Chopin?= <seb@chopin.io>
Date: Mon, 23 Jan 2017 17:55:39 +0100
Subject: [PATCH] Add analyse option

---
 bin/nuxt-build                           | 11 +++++++++++
 lib/build.js                             |  1 +
 lib/webpack/client.config.js             | 12 +++++++++++-
 test/fixtures/with-config/nuxt.config.js |  4 ++++
 test/with-config.test.js                 |  5 +++++
 5 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/bin/nuxt-build b/bin/nuxt-build
index 7f6e057169..50e2fbe62f 100755
--- a/bin/nuxt-build
+++ b/bin/nuxt-build
@@ -4,9 +4,17 @@
 process.env.DEBUG = 'nuxt:*'
 
 var fs = require('fs')
+var without = require('lodash').without
 var Nuxt = require('../')
 var resolve = require('path').resolve
 
+// --analyze option
+var analyzeBuild = false
+if (process.argv.indexOf('--analyze') !== -1 || process.argv.indexOf('-a') !== -1) {
+  analyzeBuild = true
+  process.argv = without(process.argv, '--analyze', '-a')
+}
+
 var rootDir = resolve(process.argv.slice(2)[0] || '.')
 var nuxtConfigFile = resolve(rootDir, 'nuxt.config.js')
 
@@ -19,6 +27,9 @@ if (typeof options.rootDir !== 'string') {
 }
 options.dev = false // Create production build when calling `nuxt build`
 
+options.build = options.build || {}
+options.build.analyze = analyzeBuild
+
 console.log('[nuxt] Building...') // eslint-disable-line no-console
 var nuxt = new Nuxt(options)
 nuxt.build()
diff --git a/lib/build.js b/lib/build.js
index 3635e3526b..743bb57b1d 100644
--- a/lib/build.js
+++ b/lib/build.js
@@ -40,6 +40,7 @@ const r = function () {
 debug.color = 2
 
 const defaults = {
+  analyze: false,
   filenames: {
     css: 'style.css',
     vendor: 'vendor.bundle.js',
diff --git a/lib/webpack/client.config.js b/lib/webpack/client.config.js
index 6c2e68549d..85f12a0e51 100644
--- a/lib/webpack/client.config.js
+++ b/lib/webpack/client.config.js
@@ -3,9 +3,9 @@
 import { each } from 'lodash'
 import webpack from 'webpack'
 import ExtractTextPlugin from 'extract-text-webpack-plugin'
+import { BundleAnalyzerPlugin } from 'webpack-bundle-analyzer'
 import base from './base.config.js'
 import { resolve } from 'path'
-
 /*
 |--------------------------------------------------------------------------
 | Webpack Client Config
@@ -79,5 +79,15 @@ export default function () {
       isClient: true
     })
   }
+  // Webpack Bundle Analyzer
+  if (!this.dev && this.options.build.analyze) {
+    let options = {}
+    if (typeof this.options.build.analyze === 'object') {
+      options = this.options.build.analyze
+    }
+    config.plugins.push(
+      new BundleAnalyzerPlugin(options)
+    )
+  }
   return config
 }
diff --git a/test/fixtures/with-config/nuxt.config.js b/test/fixtures/with-config/nuxt.config.js
index 3d97739dad..e085010524 100644
--- a/test/fixtures/with-config/nuxt.config.js
+++ b/test/fixtures/with-config/nuxt.config.js
@@ -20,6 +20,10 @@ module.exports = {
     string: 'Nuxt.js'
   },
   build: {
+    analyze: {
+      analyzerMode: 'disabled',
+      generateStatsFile: true
+    },
     extend (config, options) {
       config.devtool = 'nosources-source-map'
     }
diff --git a/test/with-config.test.js b/test/with-config.test.js
index ba7e145c69..42c4da447a 100644
--- a/test/with-config.test.js
+++ b/test/with-config.test.js
@@ -54,6 +54,11 @@ test('/test/about-bis (added with extendRoutes)', async t => {
   t.true(html.includes('<h1>About page</h1>'))
 })
 
+test('Check stats.json generated by build.analyze', t => {
+  const stats = require(resolve(__dirname, 'fixtures/with-config/.nuxt/dist/stats.json'))
+  t.is(stats.assets.length, 10)
+})
+
 // Close server and ask nuxt to stop listening to file changes
 test.after('Closing server and nuxt.js', t => {
   server.close()