让vscode按照eslint进行格式化

1.安装eslint依赖
在package.json中用npm安装eslint的依赖

"eslint": "^4.19.1",
"eslint-friendly-formatter": "^4.0.1",
"eslint-loader": "^2.0.0",
"eslint-plugin-html": "^4.0.3",

2.生成eslint配置文件
在项目根目录下建立 .eslintrc.js文件，复制下面的内容到里面

module.exports = {
  "env": {
    "browser": true,
    "commonjs": true,
    "es6": true
  },
  "extends": "eslint:recommended",
  // 在js里面有些时候用到一些全局变量，防止eslint无脑报错
  "globals": {
    "Atomics": "readonly",
    "SharedArrayBuffer": "readonly",
    "process": false
  },
  "parserOptions": {
    "ecmaVersion": 2018
  },
  "rules": {
    "linebreak-style": [
      "error",
      "unix"
    ],

    "accessor-pairs": 2,
    "arrow-spacing": [2, { "before": true, "after": true }],
    "array-bracket-spacing": [2, "never"],
    "block-spacing": [2, "always"],
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "camelcase": [2, { "properties": "never" }],
    "comma-dangle": [2, "never"],
    "comma-spacing": [2, { "before": false, "after": true }],
    "comma-style": [2, "last"],
    "constructor-super": 2,
    "curly": [2, "multi-line"],
    "dot-location": [2, "property"],
    "eol-last": 2,
    "eqeqeq": [2, "allow-null"],
    "generator-star-spacing": [2, { "before": true, "after": true }],
    "handle-callback-err": [2, "^(err|error)$"],
    "indent": [2, 2, { "SwitchCase": 1 }],
    "jsx-quotes": [2, "prefer-single"],
    "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
    "keyword-spacing": [2, { "before": true, "after": true }],
    "new-cap": [2, { "newIsCap": true, "capIsNew": false }],
    "new-parens": 2,
    "no-array-constructor": 2,
    "no-caller": 2,
    "no-class-assign": 0,
    "no-cond-assign": 2,
    "no-const-assign": 2,
    "no-control-regex": 2,
    "no-debugger": 2,
    "no-delete-var": 2,
    "no-dupe-args": 2,
    "no-dupe-class-members": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-duplicate-imports": 2,
    "no-empty-character-class": 2,
    "no-empty-pattern": 2,
    "no-eval": 2,
    "no-ex-assign": 2,
    "no-extend-native": 2,
    "no-extra-bind": 2,
    "no-extra-boolean-cast": 2,
    "no-extra-parens": [2, "functions"],
    "no-fallthrough": 2,
    "no-floating-decimal": 2,
    "no-func-assign": 2,
    "no-implied-eval": 2,
    "no-inner-declarations": [2, "functions"],
    "no-invalid-regexp": 2,
    "no-irregular-whitespace": 2,
    "no-iterator": 2,
    "no-label-var": 2,
    "no-labels": [2, { "allowLoop": false, "allowSwitch": false }],
    "no-lone-blocks": 2,
    "no-mixed-spaces-and-tabs": 2,
    "no-multi-spaces": 2,
    "no-multi-str": 2,
    "no-multiple-empty-lines": [2, { "max": 1 }],
    "no-native-reassign": 2,
    "no-negated-in-lhs": 2,
    "no-new": 2,
    "no-new-func": 2,
    "no-new-object": 2,
    "no-new-require": 2,
    "no-new-symbol": 2,
    "no-new-wrappers": 2,
    "no-obj-calls": 2,
    "no-octal": 2,
    "no-octal-escape": 2,
    "no-path-concat": 2,
    "no-proto": 2,
    "no-redeclare": 2,
    "no-regex-spaces": 2,
    "no-return-assign": [2, "except-parens"],
    "no-self-assign": 2,
    "no-self-compare": 2,
    "no-sequences": 2,
    "no-shadow-restricted-names": 2,
    "no-spaced-func": 2,
    "no-sparse-arrays": 2,
    "no-this-before-super": 2,
    "no-throw-literal": 2,
    "no-trailing-spaces": 2,
    "no-undef": 2,
    "no-undef-init": 2,
    "no-unexpected-multiline": 2,
    "no-unmodified-loop-condition": 2,
    "no-unneeded-ternary": [2, { "defaultAssignment": false }],
    "no-unreachable": 2,
    "no-unsafe-finally": 2,
    "no-unused-vars": [2, { "vars": "all", "args": "none" }],
    "no-useless-call": 2,
    "no-useless-computed-key": 2,
    "no-useless-constructor": 2,
    "no-useless-escape": 2,
    "no-whitespace-before-property": 2,
    "no-with": 2,
    "one-var": [2, { "initialized": "never" }],
    "operator-linebreak": [
      2,
      "before",
      { "overrides": { "?": "before", ":": "before" } }
    ],
    "padded-blocks": [2, "never"],
    "quotes": [2, "single", "avoid-escape"],
    "semi": [2, "never"],
    "semi-spacing": [2, { "before": false, "after": true }],
    "space-before-blocks": [2, "always"],
    // function方法前面允许加空格
    "space-before-function-paren": [0, "never"],
    "space-in-parens": [2, "never"],
    "space-infix-ops": 2,
    "space-unary-ops": [2, { "words": true, "nonwords": false }],
    "spaced-comment": [
      2,
      "always",
      {
        "markers": [
          "global",
          "globals",
          "eslint",
          "eslint-disable",
          "*package",
          "!",
          ","
        ]
      }
    ],
    "template-curly-spacing": [2, "never"],
    "use-isnan": 2,
    "valid-typeof": 2,
    "wrap-iife": [2, "any"],
    "yield-star-spacing": [2, "both"],
    "yoda": [2, "never"],
  }
}

3.自动格式化设置
1、window电脑：

文件 > 首选项 > 设置    点击右上角按钮打开 VSCode 配置文件,如下图

2、mac电脑

code>首选项 >设置   点击右上角按钮打开 VSCode 配置文件,如下图

 

vscode配置补充

可以复制我的设置，覆盖setting.json文件里到配置，如下：

{
  "editor.quickSuggestions": {
    //开启自动显示建议
    "other": true,
    "comments": true,
    "strings": true
  },
  // vscode默认启用了根据文件类型自动设置tabsize的选项
  "editor.detectIndentation": false,
  // 重新设定tabsize
  "editor.tabSize": 2,
  // 每次保存的时候自动格式化 
  "editor.formatOnSave": true,
  // 每次保存的时候将代码按eslint格式进行修复
  "eslint.autoFixOnSave": true,
  // 添加 vue 支持
  "eslint.validate": [
    "javascript",
    "javascriptreact",
    {
      "language": "html",
      "autoFix": true
    },
    {
      "language": "vue",
      "autoFix": true
    }
  ],
  // 让prettier使用eslint的代码格式进行校验 
  "prettier.eslintIntegration": true,
  // 去掉代码结尾的分号 
  "prettier.semi": false,
  // 使用单引号替代双引号 
  "prettier.singleQuote": true,
  // 让函数(名)和后面的括号之间加个空格
  // "javascript.format.insertSpaceBeforeFunctionParenthesis": false,
  // html格式化，这个按用户自身习惯选择 
  "vetur.format.defaultFormatter.html": "js-beautify-html",
  // 让vue中的js按编辑器自带的ts格式进行格式化 
  "vetur.format.defaultFormatter.js": "vscode-typescript",
  "vetur.format.defaultFormatterOptions": {
    "js-beautify-html": {
      "wrap_attributes": "force-aligned"
      // vue组件中html代码格式化样式
    }
  },
  "search.exclude": {
    "**/node_modules": true,
    "**/bower_components": true,
    "**/dist": true
  },
  "emmet.syntaxProfiles": {
    "javascript": "jsx",
    "vue": "html",
    "vue-html": "html"
  },
  // 设置字体
  "editor.fontFamily": "'Droid Sans Mono', 'Courier New', monospace, 'Droid Sans Fallback'",
  // vscode 程序title位置显示内容，这里设置了显示路径
  "window.title": "${dirty}${activeEditorMedium}${separator}${rootName}",
  // 编辑器建议 显示在头部
  "editor.snippetSuggestions": "top",
  "editor.suggestSelection": "first",
  "vsintellicode.modify.editor.suggestSelection": "automaticallyOverrodeDefaultValue"
}

这样，你就可以保存自动按照配置格式化代码。

作者：四季枫叶
链接：https://www.jianshu.com/p/e54990a79ded
来源：简书
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