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01-custom-library-npm

v1.0.2

Published

```js npm init -y npm i webpack webpack-cli lodash -D ``` #### 2)配置webpack * 将项目中使用lodash也打包进项目中,增大了项目的体积(不推荐) ```js // webpack.config.js const path = require('path')

Downloads

112

Readme

1、项目搭建

1)项目初始化安装依赖

npm init -y
npm i webpack webpack-cli lodash -D

2)配置webpack

  • 将项目中使用lodash也打包进项目中,增大了项目的体积(不推荐)
// webpack.config.js
const path = require('path')

module.exports = {
  mode: 'development',
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    clean: true,
    filename: 'webpack-numbers.js',
    library: {
      // library 向外暴露的对象名
      name: 'webpackNumbers',
      // 兼容不同的环境 CommonJS、AMD、Node.js 等
      type: 'umd',
    },
  },
}
  • 将lodash等第三方包外部化,由用户安装(推荐)
const path = require('path')

module.exports = {
  mode: 'development',
  entry: './src/index.js',
  output: {
    path: path.resolve(__dirname, 'dist'),
    clean: true,
    filename: 'webpack-numbers.js',
    library: {
      // library 向外暴露的对象名
      name: 'webpackNumbers',
      // 兼容不同的环境 CommonJS、AMD、Node.js 等
      type: 'umd',
    },
  },

  // 外部扩展:https://webpack.docschina.org/configuration/externals/#externals
  externals: {
    lodash: {
      commonjs: 'lodash',
      commonjs2: 'lodash',
      amd: 'lodash',
      root: '_',
    },
  },
}

3)配置npm script并打包构建

"build": "webpack --config webpack.config.js"

同时将package.json文件中main设置为打包构建的文件

"main": "dist/webpack-numbers.js",

2、发布流程

1)将npm的registry设置为官方的仓库(我们需要将包发布到官方仓库)

  • 不能发布到taobao,taobao镜像是只读镜像,会发布失败
  • 若要发布的私服,需要将仓库地址设置为私服地址
npm config get registry

// 发布library需要使用官方仓库
npm config set registry https://registry.npmjs.org
npm config set registry https://registry.npm.taobao.org

2)在终端中登录npm

  • npm login输入用户名、密码和邮箱登录npm

3)发布library到npm

  • 使用命令:npm publish
npm logout //登出

// 如果不知道当前登录的账号可以用who命令查看身份:
npm who am i

// 发布的包在72小时内是可以删除的
npm unpublish  <pkg>[@<version>]
npm unpublish [email protected]

3、更新包

  • 1、修改完包的代码后,还需要更新下package.json中的version(不能和之前的版本相同)
  • 2、已经登录过了,只需使用发布命令npm publish更新包

4、发布注意问题

  • 1、必须将registry设置为官方仓库,否则发布失败
  • 2、每次修改后重新发布,需要修改package.json中的版本号

5、测试

  • CommonJS:在test文件夹下创建test.js,可以使用node去运行代码
// test.js
const webpackNumbers = require('../dist/webpack-numbers')

console.log(webpackNumbers.numToWord(3));
  • script 标签测试:在test文件夹下创建index.html
<body>
  <script src="../dist/webpack-numbers.js"></script>
  <script>
    console.log(webpackNumbers);
  </script>
</body>

5、webpack支持es模块引入