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                    前言
            
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                    1-3 安装与使用
            
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                    1-4 使用 Loader
            
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                    1-5 使用 Plugin
            
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                    1-6 使用 DevServer
            
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                    1-7 核心概念
            
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                    第2章 配置
            
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                    2-1 Entry
            
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                    2-2 Output
            
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                    2-3 Module
            
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                    2-4 Resolve
            
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                    2-5 Plugins
            
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                    2-6 DevServer
            
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                    2-7 其它配置项
            
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                    2-8 整体配置结构
            
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                    2-9 多种配置类型
            
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                    2-10 配置总结
            
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                    第3章 实战
            
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                    3-1 使用 ES6 语言
            
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                    3-2 使用 TypeScript 语言
            
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                    3-3 使用 Flow 检查器
            
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                    3-4 使用 SCSS
            
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                    3-5 使用 PostCSS
            
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                    3-6 使用 React 框架
            
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                    3-7 使用 Vue 框架
            
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                    3-8 使用 Angular2 框架
            
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                    3-9 为单页应用生成 HTML
            
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                    3-10 管理多个单页应用
            
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                    3-11 构建同构应用
            
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                    3-12 构建 Electron 应用
            
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                    3-13 构建 Npm 模块
            
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                    3-14 构建离线应用
            
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                    3-15 搭配 Npm Script
            
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                    3-16 检查代码
            
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                    3-17 通过 Node.js API 启动 Webpack
            
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                    3-18 使用 Webpack Dev Middleware
            
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                    3-19 加载图片
            
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                    3-20 加载SVG
            
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                    3-21 加载 Source Map
            
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                    3-22 实战总结
            
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                    第4章 优化
            
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                    4-1 缩小文件搜索范围
            
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                    4-2 使用 DllPlugin
            
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                    4-3 使用 HappyPack
            
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                    4-4 使用 ParallelUglifyPlugin
            
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                    4-5 使用自动刷新
            
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                    4-6 开启模块热替换
            
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                    4-7 区分环境
            
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                    4-8 压缩代码
            
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                    4-9 CDN 加速
            
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<li class="chapter " data-level="1.6.10" data-path="4-10使用TreeShaking.html">
  
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                    4-10 使用 Tree Shaking
            
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                    4-11 提取公共代码
            
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                    4-12 按需加载
            
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<li class="chapter active" data-level="1.6.13" data-path="4-13使用Prepack.html">
  
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                    4-13 使用 Prepack
            
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<li class="chapter " data-level="1.6.14" data-path="4-14开启ScopeHoisting.html">
  
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                    4-14 开启 Scope Hoisting
            
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<li class="chapter " data-level="1.6.15" data-path="4-15输出分析.html">
  
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                    4-15 输出分析
            
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<li class="chapter " data-level="1.6.16" data-path="4-16优化总结.html">
  
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                    4-16 优化总结
            
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<li class="chapter " data-level="1.7" data-path="../5原理/">
  
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                    第5章 原理
            
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                                <h1 id="4-13-&#x4F7F;&#x7528;-prepack">4-13 &#x4F7F;&#x7528; Prepack</h1>
<h2 id="&#x8BA4;&#x8BC6;-prepack">&#x8BA4;&#x8BC6; Prepack</h2>
<p>&#x5728;&#x524D;&#x9762;&#x7684;&#x4F18;&#x5316;&#x65B9;&#x6CD5;&#x4E2D;&#x63D0;&#x5230;&#x4E86;&#x4EE3;&#x7801;&#x538B;&#x7F29;&#x548C;&#x5206;&#x5757;&#xFF0C;&#x8FD9;&#x4E9B;&#x90FD;&#x662F;&#x5728;&#x7F51;&#x7EDC;&#x52A0;&#x8F7D;&#x5C42;&#x9762;&#x7684;&#x4F18;&#x5316;&#xFF0C;&#x9664;&#x6B64;&#x4E4B;&#x5916;&#x8FD8;&#x53EF;&#x4EE5;&#x4F18;&#x5316;&#x4EE3;&#x7801;&#x5728;&#x8FD0;&#x884C;&#x65F6;&#x7684;&#x6548;&#x7387;&#xFF0C;<a href="https://prepack.io" target="_blank">Prepack</a> &#x5C31;&#x662F;&#x4E3A;&#x6B64;&#x800C;&#x751F;&#x3002;</p>
<p>Prepack &#x7531; Facebook &#x5F00;&#x6E90;&#xFF0C;&#x5B83;&#x91C7;&#x7528;&#x8F83;&#x4E3A;&#x6FC0;&#x8FDB;&#x7684;&#x65B9;&#x6CD5;&#xFF1A;&#x5728;&#x4FDD;&#x6301;&#x8FD0;&#x884C;&#x7ED3;&#x679C;&#x4E00;&#x81F4;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x6539;&#x53D8;&#x6E90;&#x4EE3;&#x7801;&#x7684;&#x8FD0;&#x884C;&#x903B;&#x8F91;&#xFF0C;&#x8F93;&#x51FA;&#x6027;&#x80FD;&#x66F4;&#x9AD8;&#x7684; JavaScript &#x4EE3;&#x7801;&#x3002;
&#x5B9E;&#x9645;&#x4E0A; Prepack &#x5C31;&#x662F;&#x4E00;&#x4E2A;&#x90E8;&#x5206;&#x6C42;&#x503C;&#x5668;&#xFF0C;&#x7F16;&#x8BD1;&#x4EE3;&#x7801;&#x65F6;&#x63D0;&#x524D;&#x5C06;&#x8BA1;&#x7B97;&#x7ED3;&#x679C;&#x653E;&#x5230;&#x7F16;&#x8BD1;&#x540E;&#x7684;&#x4EE3;&#x7801;&#x4E2D;&#xFF0C;&#x800C;&#x4E0D;&#x662F;&#x5728;&#x4EE3;&#x7801;&#x8FD0;&#x884C;&#x65F6;&#x624D;&#x53BB;&#x6C42;&#x503C;&#x3002;</p>
<p>&#x4EE5;&#x5982;&#x4E0B;&#x6E90;&#x7801;&#x4E3A;&#x4F8B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">import</span> React, {Component} <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react&apos;</span>;
<span class="hljs-keyword">import</span> {renderToString} <span class="hljs-keyword">from</span> <span class="hljs-string">&apos;react-dom/server&apos;</span>;

<span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-title">hello</span>(<span class="hljs-params">name</span>) </span>{
  <span class="hljs-keyword">return</span> <span class="hljs-string">&apos;hello &apos;</span> + name;
}

<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">Button</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Component</span> </span>{
  render() {
    <span class="hljs-keyword">return</span> hello(<span class="hljs-keyword">this</span>.props.name);
  }
}

<span class="hljs-built_in">console</span>.log(renderToString(<span class="xml"><span class="hljs-tag">&lt;<span class="hljs-name">Button</span> <span class="hljs-attr">name</span>=<span class="hljs-string">&apos;webpack&apos;</span>/&gt;</span>));
</span></code></pre>
<p>&#x88AB; Prepack &#x8F6C;&#x5316;&#x540E;&#x7ADF;&#x7136;&#x76F4;&#x63A5;&#x8F93;&#x51FA;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-built_in">console</span>.log(<span class="hljs-string">&quot;hello webpack&quot;</span>);
</code></pre>
<p>&#x53EF;&#x4EE5;&#x770B;&#x51FA; Prepack &#x901A;&#x8FC7;&#x5728;&#x7F16;&#x8BD1;&#x9636;&#x6BB5;&#x9884;&#x5148;&#x6267;&#x884C;&#x4E86;&#x6E90;&#x7801;&#x5F97;&#x5230;&#x6267;&#x884C;&#x7ED3;&#x679C;&#xFF0C;&#x518D;&#x76F4;&#x63A5;&#x628A;&#x8FD0;&#x884C;&#x7ED3;&#x679C;&#x8F93;&#x51FA;&#x6765;&#x4EE5;&#x63D0;&#x5347;&#x6027;&#x80FD;&#x3002;</p>
<p>Prepack &#x7684;&#x5DE5;&#x4F5C;&#x539F;&#x7406;&#x548C;&#x6D41;&#x7A0B;&#x5927;&#x81F4;&#x5982;&#x4E0B;&#xFF1A;</p>
<ol>
<li>&#x901A;&#x8FC7; Babel &#x628A; JavaScript &#x6E90;&#x7801;&#x89E3;&#x6790;&#x6210;&#x62BD;&#x8C61;&#x8BED;&#x6CD5;&#x6811;&#xFF08;AST&#xFF09;&#xFF0C;&#x4EE5;&#x65B9;&#x4FBF;&#x66F4;&#x7EC6;&#x7C92;&#x5EA6;&#x5730;&#x5206;&#x6790;&#x6E90;&#x7801;&#xFF1B;</li>
<li>Prepack &#x5B9E;&#x73B0;&#x4E86;&#x4E00;&#x4E2A; JavaScript &#x89E3;&#x91CA;&#x5668;&#xFF0C;&#x7528;&#x4E8E;&#x6267;&#x884C;&#x6E90;&#x7801;&#x3002;&#x501F;&#x52A9;&#x8FD9;&#x4E2A;&#x89E3;&#x91CA;&#x5668; Prepack &#x624D;&#x80FD;&#x638C;&#x63E1;&#x6E90;&#x7801;&#x5177;&#x4F53;&#x662F;&#x5982;&#x4F55;&#x6267;&#x884C;&#x7684;&#xFF0C;&#x5E76;&#x628A;&#x6267;&#x884C;&#x8FC7;&#x7A0B;&#x4E2D;&#x7684;&#x7ED3;&#x679C;&#x8FD4;&#x56DE;&#x5230;&#x8F93;&#x51FA;&#x4E2D;&#x3002;</li>
</ol>
<p>&#x4ECE;&#x8868;&#x9762;&#x4E0A;&#x770B;&#x53BB;&#x8FD9;&#x4F3C;&#x4E4E;&#x975E;&#x5E38;&#x7F8E;&#x597D;&#xFF0C;&#x4F46;&#x5B9E;&#x9645;&#x4E0A; Prepack &#x8FD8;&#x4E0D;&#x591F;&#x6210;&#x719F;&#x4E0E;&#x5B8C;&#x5584;&#x3002;Prepack &#x76EE;&#x524D;&#x8FD8;&#x5904;&#x4E8E;&#x521D;&#x671F;&#x7684;&#x5F00;&#x53D1;&#x9636;&#x6BB5;&#xFF0C;&#x5C40;&#x9650;&#x6027;&#x4E5F;&#x5F88;&#x5927;&#xFF0C;&#x4F8B;&#x5982;&#xFF1A;</p>
<ul>
<li>&#x4E0D;&#x80FD;&#x8BC6;&#x522B; DOM API &#x548C; &#x90E8;&#x5206; Node.js API&#xFF0C;&#x5982;&#x679C;&#x6E90;&#x7801;&#x4E2D;&#x6709;&#x8C03;&#x7528;&#x4F9D;&#x8D56;&#x8FD0;&#x884C;&#x73AF;&#x5883;&#x7684; API &#x5C31;&#x4F1A;&#x5BFC;&#x81F4; Prepack &#x62A5;&#x9519;&#xFF1B;</li>
<li>&#x5B58;&#x5728;&#x4F18;&#x5316;&#x540E;&#x7684;&#x4EE3;&#x7801;&#x6027;&#x80FD;&#x53CD;&#x800C;&#x66F4;&#x4F4E;&#x7684;&#x60C5;&#x51B5;&#xFF1B;</li>
<li>&#x5B58;&#x5728;&#x4F18;&#x5316;&#x540E;&#x7684;&#x4EE3;&#x7801;&#x6587;&#x4EF6;&#x5C3A;&#x5BF8;&#x5927;&#x5927;&#x589E;&#x52A0;&#x7684;&#x60C5;&#x51B5;&#x3002;</li>
</ul>
<p>&#x603B;&#x4E4B;&#xFF0C;&#x73B0;&#x5728;&#x628A; Prepack &#x7528;&#x4E8E;&#x7EBF;&#x4E0A;&#x73AF;&#x5883;&#x8FD8;&#x4E3A;&#x65F6;&#x8FC7;&#x65E9;&#x3002;</p>
<h2 id="&#x63A5;&#x5165;-webpack">&#x63A5;&#x5165; Webpack</h2>
<p>Prepack &#x9700;&#x8981;&#x5728; Webpack &#x8F93;&#x51FA;&#x6700;&#x7EC8;&#x7684;&#x4EE3;&#x7801;&#x4E4B;&#x524D;&#xFF0C;&#x5BF9;&#x8FD9;&#x4E9B;&#x4EE3;&#x7801;&#x8FDB;&#x884C;&#x4F18;&#x5316;&#xFF0C;&#x5C31;&#x50CF; UglifyJS &#x90A3;&#x6837;&#x3002;
&#x56E0;&#x6B64;&#x9700;&#x8981;&#x901A;&#x8FC7;&#x65B0;&#x63A5;&#x5165;&#x4E00;&#x4E2A;&#x63D2;&#x4EF6;&#x6765;&#x4E3A; Webpack &#x63A5;&#x5165; Prepack&#xFF0C;&#x5E78;&#x8FD0;&#x7684;&#x662F;&#x793E;&#x533A;&#x4E2D;&#x5DF2;&#x7ECF;&#x6709;&#x4EBA;&#x505A;&#x597D;&#x4E86;&#x8FD9;&#x4E2A;&#x63D2;&#x4EF6;&#xFF1A;<a href="https://github.com/gajus/prepack-webpack-plugin" target="_blank">prepack-webpack-plugin</a>&#x3002;</p>
<p>&#x63A5;&#x5165;&#x8BE5;&#x63D2;&#x4EF6;&#x975E;&#x5E38;&#x7B80;&#x5355;&#xFF0C;&#x76F8;&#x5173;&#x914D;&#x7F6E;&#x4EE3;&#x7801;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre><code class="lang-js"><span class="hljs-keyword">const</span> PrepackWebpackPlugin = <span class="hljs-built_in">require</span>(<span class="hljs-string">&apos;prepack-webpack-plugin&apos;</span>).default;

<span class="hljs-built_in">module</span>.exports = {
  plugins: [
    <span class="hljs-keyword">new</span> PrepackWebpackPlugin()
  ]
};
</code></pre>
<p>&#x91CD;&#x65B0;&#x6267;&#x884C;&#x6784;&#x5EFA;&#x4F60;&#x5C31;&#x4F1A;&#x770B;&#x5230;&#x8F93;&#x51FA;&#x7684;&#x88AB; Prepack &#x4F18;&#x5316;&#x540E;&#x7684;&#x4EE3;&#x7801;&#x3002;</p>
<blockquote>
<p>&#x672C;&#x5B9E;&#x4F8B;<a href="http://webpack.wuhaolin.cn/4-13&#x4F7F;&#x7528;Prepack.zip" target="_blank">&#x63D0;&#x4F9B;&#x9879;&#x76EE;&#x5B8C;&#x6574;&#x4EE3;&#x7801;</a></p>
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