// https://eslint.org/docs/user-guide/configuring

module.exports = {
  root: true,
  parserOptions: {
    parser: "babel-eslint",
  },
  env: {
    browser: true,
  },
  globals: {
    Vue: true,
    VueRouter: true,
    Vuex: true,
    axios: true,
    ELEMENT: true,
    THEME: true,
    RootApp: true,
    BMAP_NORMAL_MAP: true,
    BMAP_HYBRID_MAP: true,
    BMap: true,
    BaiduMap: true,
  },
  extends: [
    // https://github.com/vuejs/eslint-plugin-vue#priority-a-essential-error-prevention
    // consider switching to `plugin:vue/strongly-recommended` or `plugin:vue/recommended` for stricter rules.
    "plugin:vue/essential",
    // https://github.com/standard/standard/blob/master/docs/RULES-en.md
    // 'standard'
  ],
  // required to lint *.vue files
  plugins: ["vue", "promise"],
  // add your custom rules here
  rules: {
    //禁止注册模板中未使用的组件
    "vue/no-unused-components": [
      "warn",
      {
        ignoreWhenBindingPresent: true,
      },
    ],
    // allow async-await
    "generator-star-spacing": "off",
    // allow debugger during development
    "no-debugger": process.env.NODE_ENV === "production" ? "error" : "off",
    "no-extra-parens": 0, //不允许出现不必要的圆括号
    "no-new": 0, //不允许new一个实例后不赋值或者不比较
    "no-new-func": 0, //不允许使用new Function
    eqeqeq: ["off", "always"], //不可采用==
    camelcase: "off", //关闭不可采用驼峰
    "no-useless-escape": "warn", //正则表达式转义问题
    "one-var": [0, "always"],
    "prefer-const": 0, // 如果一个变量只有在声明时才被赋值一次，那么应该使用'const'
    "quote-props": 0,
    "bject-curly-spacing": 0,
    "no-prototype-builtins": 0,
    "object-curly-spacing": 0,
    "dot-notation": 0,
    "keyword-spacing": 0,
    quotes: ["error", "single"],

    "no-empty-character-class": 2, //正则表达式中不允许出现空的字符组
    "no-extra-boolean-cast": 2, //不允许出现不必要的布尔值转换
    "no-ex-assign": 2, //在try catch语句中不允许重新分配异常变量
    "no-extra-semi": 2, //不允许出现不必要的分号
    "no-func-assign": 2, //不允许重新分配函数声明
    "no-dupe-args": 2, // 函数参数不能重复
    "no-dupe-args": 2, // 函数参数不能重复no-duplicate-case": 2, // switch中的case标签不能重复
    "space-before-function-paren": [2, { anonymous: "never", named: "never" }],
    "no-unreachable": 2, // 不能有无法执行的代码
    "no-empty": 2, //不允许出现空的代码块
    "no-var": 1, //禁用var，用let和const代替
    "no-new-object": 0,
    "no-unused-vars": 0,
    "vue/no-unused-vars": 0,
    "no-trailing-spaces": 0,
    "eol-last": 0,
    "no-undef": 0,
    // 代码风格
    "no-else-return": 2, // 如果if语句里面有return,后面不能跟else语句
    "no-multi-spaces": 2, // 不能用多余的空格
    "no-redeclare": [
      2,
      {
        // 禁止重复声明变量
        builtinGlobals: true,
      },
    ],
    "no-multiple-empty-lines": [
      1,
      {
        max: 2,
      },
    ], //空行最多不能超过2行
    "no-multi-str": 2, //字符串不能用\换行
    "no-useless-escape": 0, //禁用不必要的转义字符;

    /*
    https://www.npmjs.com/package/eslint-plugin-promise
    */
    "promise/always-return": 0,
    "promise/no-return-wrap": 0,
    //使用promise 时，强制使用标准参数命名： new Promise(function (resolve, reject) { ... })
    "promise/param-names": "error",
    //promise，强制then、catch 一起出现
    // "promise/catch-or-return": 1,
    "promise/no-native": 0,
    "promise/no-nesting": "warn",
    "promise/no-promise-in-callback": "warn",
    "promise/no-callback-in-promise": "warn",
    "promise/avoid-new": 0,
    "promise/no-new-statics": 0,
    "promise/no-return-in-finally": 0,
    "promise/valid-params": 0,
  },
};