在团队开发中，无论是写前端（js,css,html） ，还是后端 ，我们需要解决一个问题：如何统一团队代码风格。 这篇文章主要是使用pre-git , eslint , js-beautify 实现代码风格控制。
下面分别介绍这三个工具和使用方式：
- pre-git
该工具能实现git hook的功能，在git的流程中插入一些自定义行为，例如commit之前执行代码检测，如果不通过则报错。 - eslint
代码格式审核工具，可以随意组合配置各种风格，用于组成团队的代码统一规范。 - js-beautiful
js代码整理、美化工具。
然后这三个工具互相配合就形成了以下效果：
- 项目组长定义好eslint的代码规范。
- 使用pre-git在commit之前运行eslint代码监测和js-beautiful代码美化
- 如果通过则自动"git add ." ，最后允许push。
实现
一：npm安装上述工具
$ npm install eslint js-beautify pre-git --save-dev
二：工具的配置
在根目录新建.eslintrc.json文件，并且把规范配置好，一下给一个精简版：
注意：如需更多检测，请到eslint官网查看
{
"rules": {
"comma-dangle": ["error", "never"],
"arrow-body-style": ["warn", "always"],
"no-const-assign": ["error"]
},
"parserOptions": {
"ecmaVersion": 6
}
}
因测试，bash 中使用js-beautiful递归多层文件的时候总出现错误，所以由一脚本来进行代码美化：
beatufyjs.js
const fs = require( ‘fs‘ );const path = require( ‘path‘ );const child_process = require( ‘child_process‘ );for( let arg of process.argv.splice( 2 ) ) { let pathName = path.join( process.cwd(),arg ); if( isFile( path.join( process.cwd(),arg ) ) ) {
child_process.exec( `./node_modules/js-beautify/js/bin/js-beautify.js -P -E -j -a ${pathName} -r` , function( error, msg, stderr ) { console.log( msg.replace(‘\\\\n‘,‘‘) );
} );
} else {
read_dir( pathName );
}
}function read_dir( dir ){ let files = fs.readdirSync( dir ); for( let file of files ) { let pathName = path.join( dir,file ); if( isFile( pathName ) ) {
child_process.exec( `./node_modules/js-beautify/js/bin/js-beautify.js -P -E -j -a ${pathName} -r` , function( error, msg, stderr ) { console.log( msg.replace( ‘\\\\n‘,‘‘) );
} );
} else {
read_dir( pathName );
}
}
}function isFile( path ){
return exists( path ) && fs.statSync( path ).isFile();
}
function exists( path ){
return fs.existsSync( path ) || path.existsSync( path );
}
三：使用上述工具
在package.json文件中配置：
{
"name": "demo",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"lint": "./node_modules/.bin/eslint routes runtime utils libs --quiet",
"lint-fix": "./node_modules/.bin/eslint routes runtime utils libs --quiet --fix",
"js-beautify": "node --harmony --use_strict ./bin/beatufyjs.js libs middlewares index.js "
},
"author": "kelvv",
"license": "ISC",
"config": {
"pre-git": {
"commit-msg": "",
"pre-commit": [ "npm run lint-fix", "npm run js-beautify", "git add ."
],
"pre-push": [],
"post-commit": [],
"post-checkout": [],
"post-merge": []
}
},
"devDependencies": {
"eslint": "^2.12.0",
"js-beautify": "^1.6.3",
"pre-git": "^3.9.1"
}
}
此时当你修改其中一个文件，然后"git add && git commit -m ‘msg‘ "的时候，pre-commit中的三条命令就会执行，如果中途有错就会停止提交，修改完毕后再继续提交。
有一点需要注意的是，有的格式问题不足以报错的话，改方法会自动修改优化代码，并且自动添加修改，最后一步，执行：git push即可！
可以结合单元测试，更佳
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