.eslintrc.json

{
  "parserOptions": {
    "ecmaVersion": 8,
    "sourceType": "module"
  },
  "plugins": ["webdriverio"],
  "env": {
    "webdriverio/wdio": true,
    "mocha": true,
    "es6": true,
    "node": true,
    "browser": true
  },
  "globals": {
    "browser": true,
    "$$": true,
    "$": true,
    "describe": true,
    "it": true,
    "itin": true,
    "xit": true,
    "before": true,
    "after": true,
    "afterEach": true,
    "expect": true,
    "assert": true
  },
  "extends": "eslint:recommended",
  "rules": {
    "indent": ["error", 4],
    "linebreak-style": ["error", "unix"],
    "quotes": ["error", "single"],
    "semi": ["error", "never"],
    "no-cond-assign": ["error", "always"],
    "no-console": "off",
    "no-mixed-spaces-and-tabs": "error",
    "no-unused-vars": "error",
    "eqeqeq": "error",
    "block-scoped-var": "error",
    "curly": "error",
    "no-case-declarations": "error",
    "no-else-return": "error",
    "no-empty-function": "error",
    "no-empty-pattern": "error",
    "no-eq-null": "error",
    "no-implicit-coercion": "error",
    "no-loop-func": "error",
    "no-magic-numbers": "error",
    "no-unused-expressions": "error",
    "no-useless-concat": "error",
    "yoda": "error",
    "no-undef-init": "error",
    "no-use-before-define": "error",
    "global-require": "error",
    "no-path-concat": "error",
    "comma-spacing": ["error", { "before": false, "after": true }],
    "comma-style": ["error", "last"],
    "computed-property-spacing": ["error", "never"]
  }
}