.eslintrc

{
  "plugins": ["googleappsscript"],
  "env": {
    "googleappsscript/googleappsscript": true,
    "node": true,
    "mocha": true
  },
  "extends": ["eslint:recommended"],
  "parserOptions": {
    "ecmaVersion": 2017
  },
  "rules": {
    "import/no-unresolved": 0,
    "import/no-unassigned-import": 0,
    "semi": ["error", "always"],
    "space-before-function-paren": [
      "error",
      {
        "anonymous": "always",
        "named": "always",
        "asyncArrow": "always"
      }
    ],
    "arrow-parens": 0,
    "generator-star-spacing": 0,
    "quotes": ["error", "double"],
    "curly": "error",
    "default-case": "error",
    "no-empty-function": "error",
    "no-loop-func": "error",
    "no-param-reassign": "error",
    "no-redeclare": "error",
    "no-return-assign": ["error", "always"],
    "vars-on-top": "error",
    "yoda": "error",
    "init-declarations": ["error", "always"],
    "global-require": "error",
    "no-mixed-requires": "error",
    "camelcase": "error",
    "comma-spacing": [
      "error",
      {
        "before": false,
        "after": true
      }
    ],
    "eol-last": "error",
    "keyword-spacing": "error",
    "no-lonely-if": "error",
    "func-call-spacing": ["error", "never"],
    "no-trailing-spaces": "off",
    "comma-dangle": ["error", "never"],
    "object-property-newline": "error",
    "one-var": ["error", "never"],
    "space-in-parens": [
      "error",
      "always",
      {
        "exceptions": ["empty", "{}"]
      }
    ],
    "no-duplicate-imports": "error",
    "no-var": "error",
    "prefer-const": "error",
    "key-spacing": [
      "error",
      {
        "align": "colon"
      }
    ],
    "no-multi-spaces": "off",
    "no-unused-vars": "warn",
    "no-unexpected-multiline": "error",
    "no-unreachable": "error"
  }
}