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es-webpack-engine

v4.8.3

Published

基于webpack的多入口构建方案

Downloads

810

Readme

es-webpack-engine

基于webpack的多入口构建方案-内部使用

配置

配置文件 webpack.config.js

module.exports = {
    output: {
        // 用于生产环境下的输出目录
        path: 'web/static-dist/', 
        // 用于开发环境下的输出目录      
        publicPath: '/static-dist/', 
    },
    // 共用的依赖
    libs: { 
        //可以是一个js文件
        'base': ['libs/base.js'], ,
        'html5shiv': ['html5shiv'],
        //也可以是一个npm依赖包
        'fix-ie': ['console-polyfill', 'respond-js'], 
        'jquery-insertAtCaret': ['libs/js/jquery-insertAtCaret.js'],
    },
    // 不需要解析的依赖,加快编译速度
    noParseDeps: {
        'jquery': 'jquery/dist/jquery.js',
        'bootstrap': 'bootstrap/dist/js/bootstrap.js',
    }
    // 纯拷贝文件到输出的libs目录下
    onlyCopys: [ 
    {
      name: 'es-ckeditor',
      ignore: [
        '**/samples/**',
        '**/lang/!(zh-cn.js)',
        '**/kityformula/libs/**',
      ]
    }]
};

package.json

对无关配置进行了省略

{
    "devDependencies": {
        "es-webpack-engine": "3.5.0",
    },
    "scripts": {
        "dev": "cross-env NODE_ENV=development nodemon --max_old_space_size=4096 node_modules/es-webpack-engine/dist/webpack.dev.js --parameters webpack.config.js",
        "dev:debug": "npm run dev sourcemap:true",
        "dev:custom": "npm run dev watch:CustomBundle",
        "compile": "node --max_old_space_size=4096 node_modules/es-webpack-engine/dist/webpack.prod.js --parameters webpack.config.js",
        "compile:debug": "npm run compile sourcemap:true",
        "compile:custom": "npm run compile module:CustomBundle",
    }
}

nodemon.json

触发重启node服务

{
    "watch": [
        "webpack.config.js",
        ".webpack-watch.log"
    ]
}

注意:需手动在项目根目录下,添加.webpack-watch.log文件

实时编译

实体编译,用于开发模式下,在对前端模块代码修改后,能实时编译生效。

启动实时编译服务:

npm run dev

启动服务后,默认会在本地启动3030端口的前端模块实时编译服务。

可用参数:

  • port:PORT_NUMBER:指定服务端口。例如:
    npm run dev port:3000
  • sourcemap:true:生成 Source map;
  • verbose:true: 显示编译详情,开启此选项后,控制台会输出每个文件被编译的详情;
  • analyzer:true:开启依赖分析工具,打包后文件过大,需要查看都包含了哪些依赖时使用。
  • watch:PATH:指定监听实时编译的资源,以加快实时编译的速度。支持指定Bundle、插件、主题的前端资源,例如:
    npm run dev watch:CustomBundle # 只监听定制开发的前端资源
    npm run dev watch:ExamplePlugin # 只监听 Example 插件的前端资源
    npm run dev watch:example # 只监听 Example 主题的前端资源
    npm run dev watch:CustomBundle,ExamplePlugin # 也可同时监听多个的前端资源

编译实体文件

编译实体文体:

npm run compile

可用参数:

  • sourcemap:true:生成 Source map;
  • module:PATH: 指定只编译的前端资源,以加快编译速度。支持指定Bundle、插件、主题的前端资源,例如:
    npm run compile module:CustomBundle # 只编译打包定制开发的前端资源
    npm run compile module:ExamplePlugin # 只编译打包 Example 插件的前端资源
    npm run compile module:example # 只编译打包 Example 主题的前端资源
    npm run compile module:CustomBundle,ExamplePlugin # 也可同时编译打包多个前端资源

常见错误

模块不存在

错误提示:

ERROR in multi ....
    Module not found: Error: Cannot resolve 'file' or 'directory' 

解决办法:

rm -rf node_modules
yarn

app crashed

错误提示:

[nodemon] app crashed - waiting for file changes before starting...

解决办法:

在控制台(终端)里输入rs,然后回车。

内存泄漏

错误提示:

<--- Last few GCs --->

      14 ms: Mark-sweep 2.2 (37.1) -> 2.1 (38.1) MB, 2.8 / 0 ms [allocation failure] [GC in old space requested].
      15 ms: Mark-sweep 2.1 (38.1) -> 2.1 (39.1) MB, 1.2 / 0 ms [allocation failure] [GC in old space requested].
      16 ms: Mark-sweep 2.1 (39.1) -> 2.1 (39.1) MB, 0.9 / 0 ms [last resort gc].
      17 ms: Mark-sweep 2.1 (39.1) -> 2.1 (39.1) MB, 1.0 / 0 ms [last resort gc].
...

FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - process out of memory

解决办法:

重新执行命令:npm run devnpm run compile

端口被占用

events.js:154
      throw er; // Unhandled 'error' event
      ^

Error: listen EADDRINUSE 0.0.0.0:3030
    at Object.exports._errnoException (util.js:893:11)
    at exports._exceptionWithHostPort (util.js:916:20)
    at Server.__dirname.Server.Server._listen2 (net.js:1246:14)
    ....

解决方法:该错误表明你已经开启了一个端口号为3030的服务,需要先把那个服务关掉。

lsof -i:3030
kill -9 xxxxx(PID编号)

系统默认最大文件打开数过少

报错信息:

watch ...  ENOSPC

解决方法: 在控制台输入

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p