module.exports = {
  extends: ["eslint:recommended", "plugin:react/recommended"],
  parser: "babel-eslint",
  plugins: ["react"],
  parserOptions: {
    ecmaVersion: 6,
    sourceType: "module",
    ecmaFeatures: {
      experimentalObjectRestSpread: true,
      jsx: true,
    },
  },
  globals: {
    React: true,
    react: true,
  },
  env: {
    browser: true,
    node: true,
    commonjs: true,
    es6: true,
  },
  settings: {
    react: {
      createClass: "createReactClass", // Regex for Component Factory to use,
      // default to "createReactClass"
      pragma: "React", // Pragma to use, default to "React"
      version: "detect", // React version. "detect" automatically picks the version you have installed.
      // You can also use `16.0`, `16.3`, etc, if you want to override the detected value.
      // default to latest and warns if missing
      // It will default to "detect" in the future
      flowVersion: "0.53", // Flow version
    },
    propWrapperFunctions: [
      // The names of any function used to wrap propTypes, e.g. `forbidExtraProps`. If this isn't set, any propTypes wrapped in a function will be skipped.
      "forbidExtraProps",
      { property: "freeze", object: "Object" },
      { property: "myFavoriteWrapper" },
    ],
    linkComponents: [
      // Components used as alternatives to <a> for linking, eg. <Link to={ url } />
      "Hyperlink",
      { name: "Link", linkAttribute: "to" },
    ],
  },
  rules: {
    quotes: 0, //[2, "single"], //单引号
    "no-console": 1, //警告console
    "no-debugger": 2, //禁用debugger
    "no-var": 0, //对var警告
    semi: 0, //不强制使用分号
    "no-irregular-whitespace": 0, //不规则的空白不允许
    "no-trailing-spaces": 1, //一行结束后面有空格就发出警告
    "eol-last": 0, //文件以单一的换行符结束
    "no-unused-vars": [2, { vars: "all", args: "after-used" }], //不能有声明后未被使用的变量或参数
    "no-underscore-dangle": 0, //标识符不能以_开头或结尾
    "no-alert": 2, //禁止使用alert confirm prompt
    "no-lone-blocks": 0, //禁止不必要的嵌套块
    "no-class-assign": 2, //禁止给类赋值
    "no-cond-assign": 2, //禁止在条件表达式中使用赋值语句
    "no-const-assign": 2, //禁止修改const声明的变量
    "no-delete-var": 2, //不能对var声明的变量使用delete操作符
    "no-dupe-keys": 2, //在创建对象字面量时不允许键重复
    "no-duplicate-case": 2, //switch中的case标签不能重复
    "no-dupe-args": 2, //函数参数不能重复
    "no-empty": 2, //块语句中的内容不能为空
    "no-func-assign": 2, //禁止重复的函数声明
    "no-invalid-this": 0, //禁止无效的this，只能用在构造器，类，对象字面量
    "no-redeclare": 2, //禁止重复声明变量
    "no-spaced-func": 2, //函数调用时 函数名与()之间不能有空格
    "no-this-before-super": 0, //在调用super()之前不能使用this或super
    "no-undef": 2, //不能有未定义的变量
    "no-use-before-define": 2, //未定义前不能使用
    camelcase: 0, //强制驼峰法命名
    "jsx-quotes": [2, "prefer-double"], //强制在JSX属性（jsx-quotes）中一致使用双引号
    "react/no-string-refs": 0, // 组件元素ref不能使用字符串
    "react/no-find-dom-node": 0, // 禁止使用ReactDom.findDOMNode
    "react/display-name": 0, //防止在React组件定义中丢失displayName
    "react/forbid-prop-types": [2, { forbid: ["any"] }], //禁止某些propTypes
    "react/jsx-boolean-value": 2, //在JSX中强制布尔属性符号
    "react/jsx-closing-bracket-location": 1, //在JSX中验证右括号位置
    "react/jsx-curly-spacing": [2, { when: "never", children: true }], //在JSX属性和表达式中加强或禁止大括号内的空格。
    "react/jsx-indent-props": [2, 2], //验证JSX中的props缩进
    "react/jsx-key": 2, //在数组或迭代器中验证JSX具有key属性
    "react/jsx-max-props-per-line": 0, //[1, { maximum: 1 }], // 限制JSX中单行上的props的最大数量
    "react/jsx-no-bind": 0, //JSX中不允许使用箭头函数和bind
    "react/jsx-no-duplicate-props": 2, //防止在JSX中重复的props
    "react/jsx-no-literals": 0, //防止使用未包装的JSX字符串
    "react/jsx-no-undef": [1, { allowGlobals: true }], //在JSX中禁止未声明的变量
    "react/jsx-pascal-case": 0, //为用户定义的JSX组件强制使用PascalCase
    "react/jsx-sort-props": 0, //强化props按字母排序
    "react/jsx-uses-react": 1, //防止反应被错误地标记为未使用
    "react/jsx-uses-vars": 2, //防止在JSX中使用的变量被错误地标记为未使用
    "react/no-danger": 0, //防止使用危险的JSX属性
    "react/no-did-mount-set-state": 0, //防止在componentDidMount中使用setState
    "react/no-did-update-set-state": 1, //防止在componentDidUpdate中使用setState
    "react/no-direct-mutation-state": 2, //防止this.state的直接变异
    "react/no-multi-comp": 0, //防止每个文件有多个组件定义
    "react/no-set-state": 0, //防止使用setState
    "react/no-unknown-property": 2, //防止使用未知的DOM属性
    "react/prefer-es6-class": 2, //为React组件强制执行ES5或ES6类
    "react/prop-types": 0, //防止在React组件定义中丢失props验证
    "react/react-in-jsx-scope": 2, //使用JSX时防止丢失React
    "react/self-closing-comp": 1, //防止没有children的组件的额外结束标签
    "react/sort-comp": 2, //强制组件方法顺序
    "no-extra-boolean-cast": 0, //禁止不必要的bool转换
    "react/no-array-index-key": 0, //防止在数组中遍历中使用数组key做索引
    "react/no-deprecated": 1, //不使用弃用的方法
    "react/jsx-equals-spacing": 2, //在JSX属性中强制或禁止等号周围的空格
    "no-unreachable": 1, //不能有无法执行的代码
    "comma-dangle": 0, //对象字面量项尾不能有逗号
    "no-mixed-spaces-and-tabs": 0, //禁止混用tab和空格
    "prefer-arrow-callback": 0, //比较喜欢箭头回调
    "arrow-parens": 0, //箭头函数用小括号括起来
    "arrow-spacing": 0, //=>的前/后括号
  },
};