package.json配置详解

默认的package.json文件直接使用命令：npm init --yes生成

{
"name": "pingdingshan",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo "Error: no test specified" && exit 1"
},
"author": "",
"license": "ISC"
}

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name：包名字
version：包版本，x.x.x的格式，符合语义化版本规则
description：一些描述信息
main：入口文件，一般是index.js
scripts：指定了运行脚本命令的npm命令行缩写，默认是空的test
author：作者信息
license：许可证，默认是ISC、有的默认是MIT
npm run 可列出package.json中scripts的所有脚本命令
npm run test就会执行：echo “Error: no test specified” && exit 1

以我们公司项目的package.json文件部分为例：

{
"name": "h5-components",
"version": "1.2.0",
"description": "",
"main": "./lib/index",
"module": "./es/index",
"files": [
"lib",
"es",
"dist",
"assets"
],
"repository": "http://.../h5-components.git",
"homepage": "http://...",
"author": "",
"license": "MIT",
"scripts": {
"dll": "webpack --config webpack.dll.config.js",
"rccompile": "rc-tools run compile --babel-runtime --copy-files",
"dev": "webpack-dev-server --env.api dev",
"rcdist": "rc-tools run dist",
"ucs": "yarn upgrade h5-css",
"rclint": "rc-tools run lint",
"build": "yarn rccompile && git add . && git commit -m '[compile]' && git pull && git push"
},
"config": {
"port": 8089,
"entry": {
"h5-components": [
"./index.js"
]
}
},
"dependencies": {
"antd-mobile": "^2.2.0",
"classnames": "^2.2.1",
"exif-js": "^2.3.0"
},
"devDependencies": {
"file-loader": "^1.1.5",
"less-loader": "^4.1.0",
"lodash": "^4.17.4",
"lodash-webpack-plugin": "^0.11.4",
"mini-css-extract-plugin": "^0.4.1"
},
"sideEffects": [
"*.scss"
],
"browserslist": [
"iOS >= 8",
"Firefox >= 20",
"Android > 4.2",
"> 1%",
"last 2 versions",
"not ie <= 10"
]
}

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module：es6编译入口文件
main：es5编译入口文件
files：包含在项目中的文件(夹)数组，可以声明一个.gitignore来忽略部分文件
repository：项目代码存放的地方
homepage: 项目主页url，（包的官网）
config：字段用于添加命令行的环境变量。
dependencies：在生产环境中需要用到的依赖
devDependencies：在开发、测试环境中用到的依赖
sideEffects：如果没有这个值，打包时会出错，参照css issue
browserslist：指定该模板供浏览器使用的版本
bugs：填写一个bug提交地址，便于用户反馈