用prettier进行格式化

在vscode上使用prettier插件进行格式化

参考

1. 下载 vetur ｜ Prettier - Code formatter 插件
2. 快捷键ctrl + shirt + p，搜索Settings(JSON)

3. 个性化配置--用prettier来格式化

{
  // 使用vscode-icons主题
  "workbench.iconTheme": "vscode-icons",
  // 每次保存的时候将代码按格式进行修复
  "editor.formatOnSave": true,
  "editor.codeActionsOnSave": {
    "source.fixAll": true
  },
  "eslint.validate": ["javascript", "javascriptreact", "vue"],
  "[javascript]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "[vue]": {
    "editor.defaultFormatter": "octref.vetur"
  },
  "[jsonc]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "[html]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  "[css]": {
    "editor.defaultFormatter": "esbenp.prettier-vscode"
  },
  // 默认使用prettier格式化支持的文件
  "vetur.format.defaultFormatter.js": "prettier",
  "vetur.format.defaultFormatter.html": "prettyhtml",
  "vetur.format.defaultFormatterOptions": {
    "prettier": {
      // 结尾无分号
      "semi": false,
      // 超过140个字符换行
      "printWidth": 140,
      // 使用单引号
      "singleQuote": true,
      // 无尾随逗号
      "trailingComma": "none",
      // 箭头函数单个参数不加分号
      "arrowParens": "avoid",
      "tabWidth": 2 // 缩进字节数
    },
    "prettyhtml": {
      "printWidth": 140
    }
  },
  // 同上prettier格式化代码
  "prettier.semi": false,
  "prettier.printWidth": 140,
  "prettier.trailingComma": "none",
  "prettier.singleQuote": true,
  "prettier.arrowParens": "avoid",
  "prettier.tabWidth": 2, // 缩进字节数
  "files.associations": {
    "*.cjson": "jsonc",
    "*.wxss": "css",
    "*.wxs": "javascript"
  },
  // 指定wxml的格式化
  "minapp-vscode.wxmlFormatter": "prettyHtml",
  "minapp-vscode.disableAutoConfig": true,
  "editor.defaultFormatter": "esbenp.prettier-vscode",
  "eslint.format.enable": true,
  "explorer.confirmDragAndDrop": false,
  "workbench.colorTheme": "Noctis Obscuro"
}

4. 点击左下角的设置，输入format进行搜索，设置default formatter

5. 在任一文件下，点击右键，选择格式化程序 -- prettier

使用vuecli创建项目，选择了@vue/standard检查

1. 需要新建 .prettierrc.js文件，进行单引号，结尾不要分号的配置

// 设置prettier格式化 参数
module.exports = {
  singleQuote: true, // 使用单引号
  semi: false // 结尾不加分号
}

2. 在.eslintrc.js的rules中，关闭 函数前需要空格的检查

module.exports = {
  root: true,
  env: {
    node: true
  },
  extends: ['plugin:vue/essential', '@vue/standard'],
  parserOptions: {
    parser: 'babel-eslint'
  },
  rules: {
    'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
    'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
    'space-before-function-paren': 'off' // 关掉 函数前需要空格的检查
  }
}

用eslint进行格式化

1. 打开Settings(JSON)文件，写入以下代码

{
  "files.autoSave": "off",
  "eslint.validate": [
    "javascript",
    "javascriptreact",
    "vue-html",
    "vue",
  ],
  "eslint.run": "onSave",
  "eslint.autoFixOnSave": true,
  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": true
  },
  "editor.defaultFormatter": "dbaeumer.vscode-eslint",
  "editor.quickSuggestions": {
    "strings": true
  },
  "editor.formatOnSave": true
}

2. 点击左下角的设置，输入format进行搜索，设置default formatter，选择ESlint

3. 在项目的根目录的.eslintrc.js文件中，写入代码如下

module.exports = {
  root: true,
  parserOptions: {
    parser: 'babel-eslint',
    sourceType: 'module'
  },
  env: {
    browser: true,
    node: true,
    es6: true
  },
  extends: ['plugin:vue/recommended', 'eslint:recommended'],

  // add your custom rules here
  //it is base on https://github.com/vuejs/eslint-config-vue
  rules: {
    'vue/max-attributes-per-line': [
      2,
      {
        singleline: 10,
        multiline: {
          max: 1,
          allowFirstLine: false
        }
      }
    ],
    // 'space-before-function-paren': 'off', // 关掉 函数前需要空格的检查
    'vue/singleline-html-element-content-newline': 'off',
    'vue/multiline-html-element-content-newline': 'off',
    'vue/name-property-casing': ['error', 'PascalCase'],
    'vue/no-v-html': 'off',
    'accessor-pairs': 2,
    'arrow-spacing': [
      2,
      {
        before: true,
        after: true
      }
    ],
    'block-spacing': [2, 'always'],
    'brace-style': [
      2,
      '1tbs',
      {
        allowSingleLine: true
      }
    ],
    camelcase: [
      0,
      {
        properties: 'always'
      }
    ],
    '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: ['error', 'always', { null: 'ignore' }],
    '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-console': 'off',
    'no-class-assign': 2,
    'no-cond-assign': 2,
    'no-const-assign': 2,
    'no-control-regex': 0,
    'no-delete-var': 2,
    'no-dupe-args': 2,
    'no-dupe-class-members': 2,
    'no-dupe-keys': 2,
    'no-duplicate-case': 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-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': 0,
    'no-whitespace-before-property': 2,
    'no-with': 2,
    'one-var': [
      2,
      {
        initialized: 'never'
      }
    ],
    'operator-linebreak': [
      2,
      'after',
      {
        overrides: {
          '?': 'before',
          ':': 'before'
        }
      }
    ],
    'padded-blocks': [2, 'never'],
    quotes: [
      2,
      'single',
      {
        avoidEscape: true,
        allowTemplateLiterals: true
      }
    ],
    semi: [2, 'never'],
    'semi-spacing': [
      2,
      {
        before: false,
        after: true
      }
    ],
    'space-before-blocks': [2, 'always'],
    'space-before-function-paren': [2, 'always'],// 函数的()有 2个空格
    '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'],
    'prefer-const': 2,
    'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0,
    'object-curly-spacing': [
      2,
      'always',
      {
        objectsInObjects: false
      }
    ],
    'array-bracket-spacing': [2, 'never']
  }
}