欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

npm包发布记录

程序员文章站 2022-03-03 19:13:13
...

心血来潮,写个npm 包发布吧。简单的 npm 包的发布网上有很多教程,我就不记录了。这里记录下,一个复杂的 npm 包发布,复杂指的构建环境复杂。

整个工程使用 rollup 来构建,其中会引进 babel 来转译 ES6,利用 Eslint 来规范代码的书写风格,最后代码的发布会经过 terser 压缩。同时发布 umd、es 格式的版本以供外部调用。

完整目录结构如下:

下面是整个过程的记录

一、初始化工程


yarn init -y

复制代码

初始化后,修改 package.json 内容,如 name(项目名),description(项目描述)等信息。

二、安装 rollup


yarn add [email protected] --dev

复制代码

三、创建配置文件 rollup.config.js


export default {
  input: 'src/index.js',
  output: {
    file: 'index.common.js',
    format: 'umd',
    name: 'index'
  }
}

复制代码

四、安装 babel


yarn add [email protected] @babel/[email protected] @babel/[email protected] --dev

复制代码

五、配置 babel

1、创建配置文件 .babelrc


{
  "presets": [
   [
    "@babel/preset-env",
    {
     "modules": false
    }
   ]
  ]
}

复制代码

2、与 rollup 集成,在 rollup.config.js 中配置 plugins


import babel from 'rollup-plugin-babel'

export default {
  input: 'src/index.js',
  output: {
    file: 'index.common.js',
    format: 'umd',
    name: 'index'
  },
  plugins: [
    babel({
      exclude: 'node_modules/**',
      runtimeHelpers: true
    })
  ]
}

复制代码

六、安装 eslint


yarn add [email protected]

复制代码

七、配置 eslint

1、生成 eslint 配置


.\node_modules\.bin\eslint --init

复制代码

2、与 rollup 集成,在 rollup.config.js 中配置 plugins


import babel from 'rollup-plugin-babel'
import { eslint } from 'rollup-plugin-eslint'

export default {
  input: 'src/index.js',
  output: {
    file: 'index.common.js',
    format: 'umd',
    name: 'index'
  },
  plugins: [
    eslint({
      include: ['src/**'],
      exclude: ['node_modules/**']
    }),
    babel({
      exclude: 'node_modules/**',
      runtimeHelpers: true
    })
  ]
}

复制代码

八、commonjs 兼容


yarn add [email protected] [email protected] --dev

复制代码

九、与 rollup 集成,在 rollup.config.js 中配置 plugins


import babel from 'rollup-plugin-babel'
import { eslint } from 'rollup-plugin-eslint'
import resolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'

export default {
  input: 'src/index.js',
  output: {
    file: 'index.common.js',
    format: 'umd',
    name: 'index'
  },
  plugins: [
    resolve({
      jsnext: true,
      main: true,
      browser: true
    }),
    commonjs(),
    eslint({
      include: ['src/**'],
      exclude: ['node_modules/**']
    }),
    babel({
      exclude: 'node_modules/**',
      runtimeHelpers: true
    })
  ]
}

复制代码

十、安装 terser, 用来压缩代码


yarn add [email protected] --dev

复制代码

十一、与 rollup 集成,在 rollup.config.js 中配置 plugins


import babel from 'rollup-plugin-babel'
import { eslint } from 'rollup-plugin-eslint'
import resolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
import { terser } from 'rollup-plugin-terser'

export default {
  input: 'src/index.js',
  output: {
    file: 'index.common.js',
    format: 'umd',
    name: 'index'
  },
  plugins: [
    resolve({
      jsnext: true,
      main: true,
      browser: true
    }),
    commonjs(),
    eslint({
      include: ['src/**'],
      exclude: ['node_modules/**']
    }),
    babel({
      exclude: 'node_modules/**',
      runtimeHelpers: true
    }),
    terser()
  ]
}

复制代码

十二、引入环境变量,实践差异化打包

1、安装插件


yarn add [email protected] --dev

复制代码

2、配置 plugins


import babel from 'rollup-plugin-babel'
import { eslint } from 'rollup-plugin-eslint'
import resolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
import { terser } from 'rollup-plugin-terser'
import replace from 'rollup-plugin-replace'

export default {
  input: 'src/index.js',
  output: {
    file: 'index.common.js',
    format: 'umd',
    name: 'index'
  },
  plugins: [
    resolve({
      jsnext: true,
      main: true,
      browser: true
    }),
    commonjs(),
    eslint({
      include: ['src/**'],
      exclude: ['node_modules/**']
    }),
    babel({
      exclude: 'node_modules/**',
      runtimeHelpers: true
    }),    
    replace({
      exclude: 'node_modules/**',
      ENVIRONMENT: JSON.stringify(process.env.NODE_ENV)
    }),
    terser()
  ]
}

复制代码

十三、参数化配置,加入版权说明,最终配置如下


import resolve from 'rollup-plugin-node-resolve'
import commonjs from 'rollup-plugin-commonjs'
import { eslint } from 'rollup-plugin-eslint'
import babel from 'rollup-plugin-babel'
import replace from 'rollup-plugin-replace'
import { terser } from 'rollup-plugin-terser'

const pJson = require('./package.json')

const version = pJson.version
const license = pJson.license

const banner =
  '/*!\n' +
  ` * ${pJson.name} v${version}\n` +
  ` * (c) 2018-${new Date().getFullYear()}\n` +
  ` * Released under the ${license} License.\n` +
  ' */'

const ENV = process.env.NODE_ENV.trim()

const paths = {
  input: {
    root: 'src/index.js'
  },
  output: {
    root: 'dist/'
  }
}

const fileNames = {
  development: 'index.common.js',
  production: 'index.common.js',
  production6: 'index.esm.js'
}
const fileName = fileNames[ENV]

export default {
  input: `${paths.input.root}`,
  output: {
    file: `${paths.output.root}${fileName}`,
    format: ENV === 'production6' ? 'es' : 'umd',
    name: 'index',
    banner
  },
  plugins: [
    resolve({
      jsnext: true,
      main: true,
      browser: true
    }),
    commonjs(),
    eslint({
      include: ['src/**'],
      exclude: ['node_modules/**']
    }),
    babel({
      exclude: 'node_modules/**',
      runtimeHelpers: true
    }),
    replace({
      exclude: 'node_modules/**',
      ENVIRONMENT: JSON.stringify(process.env.NODE_ENV)
    }),
    ENV && ENV.includes('production') && terser({ output: { comments: /^!/ } })
  ]
}

复制代码

三、业务代码编写

在 src/index.js 中编写具体业务代码

四、打包

在 package.json 中添加


"scripts": {
    "dev": "set NODE_ENV=development && rollup -c",
    "build": "yarn run buildcjs && yarn run buildesm",
    "buildcjs": "set NODE_ENV=production && rollup -c",
    "buildesm": "set NODE_ENV=production6 && rollup -c"
}

复制代码

运行命令


yarn run build

复制代码

五、发布


npm publish

复制代码

发布前记得记得 注册 帐号,记得修改 package.json 中 private 字段为 false


"private": false

复制代码