使用rollup 开发专业js library

2022-09-28 08:41:25

rollup 是一个不错的javascript 模块打包器，一般我们用来构建library

安装

npm install -g rollup

参考集成jquey && shortid 的library

使用es6 语法

项目结构

├── index.html

├── package.json

├── rollup.config.js

├── src

│ └── user.js

└── yarn.lock

代码说明

index.html :

测试构建的library

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <meta http-equiv="X-UA-Compatible" content="ie=edge">

    <title>Document</title>

</head>

<body>

    <script src="app.js"></script>

</body>

</html>

 rollup.config.js：

rpllup 使用config 方式构建，使用了几个插件（npm commonjs babel uglify）

import commonjs from 'rollup-plugin-commonjs';

import nodeResolve from 'rollup-plugin-node-resolve';

import babel from 'rollup-plugin-babel';

import { uglify } from 'rollup-plugin-uglify';

export default {

    input: 'src/user.js',

    output: [{

            file: 'bundle.js',

            format: 'cjs',

            banner:"// license under apache dalaongrong@qq.com",

        },

        {

            file: 'app.js',

            format: 'umd',

            name:"appdemo",

            banner:"// license under apache dalaongrong@qq.com",

        }

    ],

    plugins: [

        uglify(),

        nodeResolve({

          jsnext: false,

          main: true,

          browser: true

        }),

        babel({

            exclude: 'node_modules/**' // only transpile our source code

        }),

        commonjs({

          // non-CommonJS modules will be ignored, but you can also

          // specifically include/exclude files

          include: 'node_modules/**', // Default: undefined

          exclude: [ 'node_modules/foo/**', 'node_modules/bar/**' ], // Default: undefined

          // these values can also be regular expressions

          // include: /node_modules/

          // search for files other than .js files (must already

          // be transpiled by a previous plugin!)

          extensions: [ '.js', '.coffee' ], // Default: [ '.js' ]

          // if true then uses of `global` won't be dealt with by this plugin

          ignoreGlobal: false, // Default: false

          // if false then skip sourceMap generation for CommonJS modules

          sourceMap: false, // Default: true

          // explicitly specify unresolvable named exports

          // (see below for more details)

          namedExports: { './module.js': ['foo', 'bar' ] }, // Default: undefined

          // sometimes you have to leave require statements

          // unconverted. Pass an array containing the IDs

          // or a `id => boolean` function. Only use this

          // option if you know what you're doing!

          ignore: [ 'conditional-runtime-dependency' ]

        })

      ]

};

package.json:

引用依赖的包

{

"name": "first",

"version": "1.0.0",

"main": "index.js",

"license": "MIT",

"dependencies": {

"jquery": "^3.3.1",

"shortid": "^2.2.12"

},

"scripts": {

"build": "rollup -c",

"live": "live-server"

},

"devDependencies": {

"babel-cli": "^6.26.0",

"babel-plugin-external-helpers": "^6.22.0",

"babel-plugin-transform-object-rest-spread": "^6.26.0",

"babel-preset-env": "^1.7.0",

"live-server": "^1.2.0",

"rollup-plugin-babel": "^3.0.7",

"rollup-plugin-commonjs": "^9.1.4",

"rollup-plugin-node-resolve": "^3.3.0",

"rollup-plugin-uglify": "^4.0.0"

}

}

src/user.js:

业务处理代码

import shortid from "shortid"

import jq from "jquery"

const user ={

    name:"dalong",

    age:343

}

export default {

    id:shortid.generate(),

    version:"appv1",

    ...user,

    $:jq

}

src/.babelrc：

babel 编译配置

{

  "presets": [

    ["env", {

      "modules": false

    }]

  ],

  "plugins": ["external-helpers", "transform-object-rest-spread"]

}