package.json

定义了项目所须要的各类模块,以及项目的配置信息(好比名称、版本、许可证等元数据)vue

npm install 命令根据这个配置文件,自动下载所需的模块,也就是配置项目所需的运行和开发环境。node

package.json 文件能够手工编写,也能够使用npm init命令自动生成webpack

package-lock.json 是用来锁定安装时的包的版本号,而且须要上传到git,以保证其余人在npm install时你们的依赖能保证一致。ios

//package.json
{
  "name": "vv",  //项目名称
  "version": "0.0.0",  //项目版本(遵照“大版本.次要版本.小版本”的格式)
  "description": "A Vue.js project",  //名称
  "author": "",  
  "private": true,  
  "scripts": {  //npm命令行缩写
    "dev": "webpack-dev-server --inline --progress --config build/webpack.dev.conf.js",
    "start": "npm run dev",
    "build": "node build/build.js"
  },
  "dependencies": {  //项目运行所依赖的模块
    "axios": "^0.18.0",
    "echarts": "^4.1.0",
    "echarts-wordcloud": "^1.1.3",
    "element-ui": "^2.3.8",
    "less": "^3.9.0",
    "less-loader": "^4.1.0",
    "sass": "^1.3.2",
    "vue": "^2.5.2",
    "vue-axios": "^2.1.1",
    "vue-resource": "^1.5.0",
    "vue-router": "^3.0.1"
  },
  "devDependencies": {  //项目开发所须要的模块
    "autoprefixer": "^7.1.2",
    "babel-core": "^6.22.1",
    "babel-helper-vue-jsx-merge-props": "^2.0.3",
    "babel-loader": "^7.1.1",
    "vue-loader": "^13.3.0",
    "vue-style-loader": "^3.0.1",
    "vue-template-compiler": "^2.5.2",
    "webpack": "^3.6.0",
    "webpack-bundle-analyzer": "^2.9.0",
    "webpack-cli": "^3.1.2",
    "webpack-dev-server": "^2.9.1",
    "webpack-merge": "^4.1.0"
  },
  "peerDependencies": {  //供插件指定其所须要的主工具的版本
    "chai": "1.x" 
  },
  "bin": {  //指定各个内部命令对应的可执行文件的位置
    "someTool": "./bin/someTool.js"
  },
  "config" : { "port" : "8080" },   //添加命令行的环境变量
  "engines": {  //项目所须要的node.js版本
    "node": ">= 6.0.0",
    "npm": ">= 3.0.0"
  },
  "browserslist": [ //设置项目的浏览器兼容状况
    "> 1%",
    "last 2 versions",
    "not ie <= 8"
  ]
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更多字段请参考(segmentfault.com/a/119000001…git

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