From 88bab354b02fbe848cbc07963a1acddc598be40f Mon Sep 17 00:00:00 2001
From: Pooya Parsa <pooya@pi0.ir>
Date: Fri, 23 Mar 2018 01:51:17 +0430
Subject: [PATCH] perf(builder): experimental thread-loader and cache-loader

---
 lib/builder/webpack/base.mjs | 54 ++++++++++++++++++++++++++++++------
 lib/common/nuxt.config.js    |  4 +++
 package.json                 |  2 ++
 yarn.lock                    | 19 ++++++++++++-
 4 files changed, 70 insertions(+), 9 deletions(-)

diff --git a/lib/builder/webpack/base.mjs b/lib/builder/webpack/base.mjs
index 6e7b5131d3..583ba2b8f8 100644
--- a/lib/builder/webpack/base.mjs
+++ b/lib/builder/webpack/base.mjs
@@ -99,10 +99,37 @@ export default class WebpackBaseConfig {
     }
   }
 
+  perfLoaders(_baseLoaders) {
+    if (this.options.dev) {
+      return _baseLoaders
+    }
+
+    const loaders = []
+
+    if (this.options.build.cache) {
+      // https://github.com/webpack-contrib/cache-loader
+      loaders.push({
+        loader: 'cache-loader',
+        options: {
+          cacheDirectory: path.resolve('node_modules/.cache/cache-loader')
+        }
+      })
+    }
+
+    if (this.options.build.parallel) {
+      // https://github.com/webpack-contrib/thread-loader
+      loaders.push({
+        loader: 'thread-loader',
+        options: {}
+      })
+    }
+
+    return loaders.concat(_baseLoaders)
+  }
+
   rules() {
-    const styleLoader = createStyleLoader({
-      isServer: this.isServer
-    })
+    const styleLoader = createStyleLoader({ isServer: this.isServer })
+
     return [
       {
         test: /\.vue$/,
@@ -111,12 +138,20 @@ export default class WebpackBaseConfig {
       },
       {
         test: /\.jsx?$/,
-        loader: 'babel-loader',
         exclude: /node_modules/,
-        options: this.getBabelOptions()
+        use: this.perfLoaders({
+          loader: 'babel-loader',
+          options: this.getBabelOptions()
+        })
+      },
+      {
+        test: /\.css$/,
+        use: styleLoader.call(this.builder, 'css')
+      },
+      {
+        test: /\.less$/,
+        use: styleLoader.call(this.builder, 'less', 'less-loader')
       },
-      { test: /\.css$/, use: styleLoader.call(this.builder, 'css') },
-      { test: /\.less$/, use: styleLoader.call(this.builder, 'less', 'less-loader') },
       {
         test: /\.sass$/,
         use: styleLoader.call(this.builder, 'sass', {
@@ -124,7 +159,10 @@ export default class WebpackBaseConfig {
           options: { indentedSyntax: true }
         })
       },
-      { test: /\.scss$/, use: styleLoader.call(this.builder, 'scss', 'sass-loader') },
+      {
+        test: /\.scss$/,
+        use: styleLoader.call(this.builder, 'scss', 'sass-loader')
+      },
       {
         test: /\.styl(us)?$/,
         use: styleLoader.call(this.builder, 'stylus', 'stylus-loader')
diff --git a/lib/common/nuxt.config.js b/lib/common/nuxt.config.js
index fcfa24fd0d..038513b1dc 100644
--- a/lib/common/nuxt.config.js
+++ b/lib/common/nuxt.config.js
@@ -1,4 +1,6 @@
 import path from 'path'
+import os from 'os'
+
 import isCI from 'is-ci'
 
 export default {
@@ -35,6 +37,8 @@ export default {
     extractCSS: false,
     cssSourceMap: undefined,
     ssr: undefined,
+    parallel: os.cpus().length > 1,
+    cache: true,
     publicPath: '/_nuxt/',
     filenames: {
       app: '[name].[chunkhash].js',
diff --git a/package.json b/package.json
index 7ee8f782de..ece02e4521 100644
--- a/package.json
+++ b/package.json
@@ -62,6 +62,7 @@
     "babel-core": "^6.26.0",
     "babel-loader": "^7.1.4",
     "babel-preset-vue-app": "^2.0.0",
+    "cache-loader": "^1.2.2",
     "chalk": "^2.3.2",
     "chokidar": "^2.0.1",
     "compression": "^1.7.1",
@@ -101,6 +102,7 @@
     "server-destroy": "^1.0.1",
     "source-map": "^0.7.2",
     "style-resources-loader": "^1.1.0",
+    "thread-loader": "^1.1.5",
     "time-fix-plugin": "^2.0.0",
     "uglifyjs-webpack-plugin": "^1.2.4",
     "upath": "^1.0.2",
diff --git a/yarn.lock b/yarn.lock
index c3097abb67..bee0a3c200 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -398,7 +398,7 @@ async@^1.4.0:
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
 
-async@^2.1.4:
+async@^2.1.4, async@^2.3.0:
   version "2.6.0"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.0.tgz#61a29abb6fcc026fea77e56d1c6ec53a795951f4"
   dependencies:
@@ -1322,6 +1322,15 @@ cache-base@^1.0.1:
     union-value "^1.0.0"
     unset-value "^1.0.0"
 
+cache-loader@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/cache-loader/-/cache-loader-1.2.2.tgz#6d5c38ded959a09cc5d58190ab5af6f73bd353f5"
+  dependencies:
+    loader-utils "^1.1.0"
+    mkdirp "^0.5.1"
+    neo-async "^2.5.0"
+    schema-utils "^0.4.2"
+
 caller-path@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/caller-path/-/caller-path-0.1.0.tgz#94085ef63581ecd3daa92444a8fe94e82577751f"
@@ -6960,6 +6969,14 @@ text-table@~0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
 
+thread-loader@^1.1.5:
+  version "1.1.5"
+  resolved "https://registry.yarnpkg.com/thread-loader/-/thread-loader-1.1.5.tgz#7f9d6701f773734fff1832586779021ab8571917"
+  dependencies:
+    async "^2.3.0"
+    loader-runner "^2.3.0"
+    loader-utils "^1.1.0"
+
 throat@4.1.0, throat@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/throat/-/throat-4.1.0.tgz#89037cbc92c56ab18926e6ba4cbb200e15672a6a"