From 428a37acb082502abecd782d5518e01809f6693c Mon Sep 17 00:00:00 2001
From: Pooya Parsa <pooya@pi0.ir>
Date: Wed, 28 Mar 2018 11:13:07 +0430
Subject: [PATCH] improve prod chunk splitting

---
 lib/builder/webpack/client.js | 10 +++++++++-
 lib/common/nuxt.config.js     |  1 +
 lib/common/options.js         |  6 ++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/lib/builder/webpack/client.js b/lib/builder/webpack/client.js
index 95caa63eef..ee8fddacf8 100644
--- a/lib/builder/webpack/client.js
+++ b/lib/builder/webpack/client.js
@@ -113,7 +113,15 @@ export default class WebpackClientConfig extends WebpackBaseConfig {
         new UglifyJsWebpackPlugin({
           parallel: true,
           cache: this.options.build.cache,
-          sourceMap: false
+          sourceMap: false,
+          extractComments: {
+            filename: 'LICENSES'
+          },
+          uglifyOptions: {
+            output: {
+              comments: /^\**!|@preserve|@license|@cc_on/
+            }
+          }
         })
       ]
     }
diff --git a/lib/common/nuxt.config.js b/lib/common/nuxt.config.js
index e2b5e12a86..0841309a01 100644
--- a/lib/common/nuxt.config.js
+++ b/lib/common/nuxt.config.js
@@ -58,6 +58,7 @@ export default {
       splitChunks: {
         chunks: 'all',
         automaticNameDelimiter: '.',
+        name: undefined,
         cacheGroups: {}
       }
     },
diff --git a/lib/common/options.js b/lib/common/options.js
index 32ed18ee8a..90a3b1fa98 100644
--- a/lib/common/options.js
+++ b/lib/common/options.js
@@ -177,6 +177,12 @@ Options.from = function (_options) {
     options.generate.fallback = '404.html'
   }
 
+  // Enable [name] when analyze or dev mode
+  if (options.build.optimization.splitChunks.name === undefined &&
+    (options.dev || options.build.analyze)) {
+    options.build.optimization.splitChunks.name = true
+  }
+
   // TODO: remove when mini-css-extract-plugin supports HMR
   if (options.dev) {
     options.build.extractCSS = false