npm中package.json

港控/mmm° 2022-09-14 01:48 191阅读 0赞

### 文章目录 ###

*  npm中package.json
 *   *  属性介绍

# npm中package.json #

通常我们使用npm init命令来创建一个npm程序时，会自动生成一个package.json文件。package.json文件会描述这个NPM包的所有相关信息，包括作者、简介、包依赖、构建等信息，格式是严格的JSON格式。

常用命令

npm i --save packageName 安装依赖包  
npm i --save-dev packageName  
npm i webpack@1.2.1 安装指定版本的包，版本号用@符号连接

## 属性介绍 ##

*  name  
    name和version是package.json中最重要的两个字段，也是发布到NPM平台上的唯一标识，如果没有正确设置这两个字段，包就不能发布和被下载。
 *  version  
    包的版本号。如"1.0.0"。
 *  license  
    包的开源协议名称。
 *  main  
    包的入口文件。
 *  repository  
    包的仓库地址。

"repository": { 
        "type": "git",
        "url": "git+https://github.com/rainnaZR/es6-react.git"
      },

*  scripts  
    通过设置这个可以使NPM调用一些命令脚本，封装一些功能。

"scripts": { "start": "babel-node src/pages/index.js",
        "build": "webpack --config config/webpack.config.js",
        "watch": "webpack-dev-server --config config/webpack.config.js --hot --inline --progress"
      }

> 比较有用

"scripts": { 
        "clean": "rimraf dist",
        "compile": "better-npm-run compile",
        "lint": "eslint src tests server",
        "lint:fix": "npm run lint -- --fix",
        "start": "better-npm-run start",
        "dev": "better-npm-run dev",
        "portal": "better-npm-run portal",
        "test": "jest --config jest.config.js",
        "test:dev": "npm run test -- --watch",
        "deploy": "better-npm-run deploy",
        "deploy:dev": "better-npm-run deploy:dev",
        "deploy:prod": "better-npm-run deploy:prod",
        "codecov": "cat coverage/*/lcov.info | codecov",
        "i18n": "better-npm-run i18n"
      },

*  dependencies  
    指定依赖的其它包，这些依赖是指包发布后正常执行时所需要的，也就是线上需要的包。使用下面的命令来安装：

npm install --save packageName

如果是开发中依赖的包，可以在devDependencies设置。

*  devDependencies  
    这些依赖只有在开发时候才需要。使用下面的命令来安装：

npm install --save-dev packageName

demo:

{ 
      "name": "react",
      "version": "1.0.0",
      "description": "Command line instructions",
      "keywords": [
        "react",
        "es6",
        "react with es6"
      ],
      "homepage": "https://github.com/rainnaZR/es6-react",
      "bugs": { 
        "url": "https://github.com/rainnaZR/es6-react",
        "email": "111@163.com"
      },
      "license": "ISC",
      "author": "ZRainna",
      "main": "src/pages/index.js",
      "directories": { 
        "tests": "tests",
        "lib":"lib",
        "docs":"docs"
      },
      "repository": { 
        "type": "git",
        "url": "git+https://github.com/rainnaZR/es6-react.git"
      },
      "scripts": { "start": "babel-node src/pages/index.js",
        "build": "webpack --config config/webpack.config.js",
        "watch": "webpack-dev-server --config config/webpack.config.js --hot --inline --progress"
      },
      "babel": { 
        "presets": [
          "es2015-node5"
        ]
      },
      "devDependencies": { 
        "webpack": "^1.13.2",
        "webpack-dev-server": "^1.16.1"
      },
      "dependencies": { 
        "babel-loader": "^6.2.5",
        "babel-preset-es2015": "^6.14.0",
        "babel-preset-react": "^6.11.1",
        "react": "^15.3.2",
        "react-dom": "^15.3.2",
        "react-redux": "^4.4.5",
        "react-router": "^2.8.1",
        "redux": "^3.6.0"
      }
    }