.eslintrc.json

{
    "env": {
        "es6": true,
        "node": true
    },
    "parserOptions": {
      "ecmaVersion": 9
    },
    "extends": "eslint:recommended",
    "rules": {
        "prefer-const": "error",
        "object-curly-spacing": ["warn", "always"],
        "indent": [
            "error",
            2
        ],
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "single"
        ],
        "semi": ["warn", "never"],
        "comma-dangle": ["error", "only-multiline"],
        "no-unused-vars": ["error", { "argsIgnorePattern": "^_" }],
        "valid-jsdoc": [2, {
          "requireParamDescription": false,
          "requireReturnDescription": false,
          "requireReturn": false,
          "prefer": {"returns": "return"}
        }],
        "require-jsdoc": [2, {
          "require": {
            "FunctionDeclaration": true,
            "MethodDefinition": true,
            "ClassDeclaration": true
          }
        }]
    }
}