{
    "env": {
        "browser": true,
        "node": true,
        "es6": true,
        "jquery": true,
        "commonjs": true,
        "phantomjs": true,
        "mocha": true
    },
    "parser": "babel-eslint",
    "parserOptions": {
        "ecmaFeatures": {
            "jsx": true
        }
    },
    "rules": {
        // 不可省略分号
        "semi": [2, "always"],
        // 控制逗号在行尾出现还是在行首出现 (逗号放在行尾) 
        "comma-style": [1, "last"],
        // 单引号 '优于双引号"
        "quotes": [2, "single"],
        // 对象属性声明的冒号:后，加空格
        "key-spacing": [2],
        // 控制逗号前后的空格
        "comma-spacing": [2, {
            "before": false,
            "after": true
        }],
        // 条件语句if、else、switch...后，加空格
        "keyword-spacing": [2, {
            "before": true,
            "after": true
        }],
        // 开始大括号前，加空格
        "space-before-blocks": [2, "always"],
        // 文件末尾强制换行; 为了兼容解析js文件的地方
        "eol-last": 2,
        // 规则配置
        "no-extra-semi": 1,
        "no-constant-condition": 2,
        "no-extra-boolean-cast": 2,
        "use-isnan": 2,
        "no-undef-init": 2,
        "camelcase": 2,
        "no-mixed-spaces-and-tabs": 2,
        "no-const-assign": 2,
        "no-func-assign": 2,
        "no-else-return": 1,
        "no-obj-calls": 2,
        "valid-typeof": 2,
        "no-unused-vars": 1,
        "object-curly-spacing": 1,
        "block-spacing": 1,
        "comma-dangle": 0,
        "array-bracket-spacing": 1,
        "space-before-function-paren": ["error", {
            "named": "never",
            "asyncArrow": "always",
            "anonymous": "always"
        }],
        "no-extra-bind": 1,
        "no-var": "error",
        "arrow-spacing": ["error", {
            "before": true,
            "after": true
        }],
        "arrow-body-style": ["error", "as-needed"],
        "no-empty-function": ["error", {
            "allow": ["arrowFunctions", "constructors"]
        }]
    },
    "settings": {
        // 如果通过webpack配置忽略了js文件后缀，在正常情况下eslint会因为找不到文件而报错。因此需要在settings里配置可省略的后缀名
        "import/resolver": {
            "node": {
                "extensions": [".coffee", ".js", ".jsx"]
            }
        },
        // 哪些import是不去检查的
        // node_modules为默认值
        // 还可以配置带有指定文件后缀不检查，如\.coffee$ 
        "import/ignore": ["node_modules"]
    }
}