.eslintrc

{
  "env": {
    "node": true,
    "es6": true
  },
  "globals": {
    "describe": true,
    "test": true,
    "expect": true
  },
  "parserOptions": {
    "ecmaVersion": 2017
  },
  "rules": {
    "semi": ["error", "always"],
    "no-extra-semi": "error",
    "arrow-spacing" : "error",
    "no-unused-vars": "error",
    "prefer-const": "error",
    "comma-style": ["error", "last"],
    "comma-dangle": "error",
    "id-length": "error",
    "no-trailing-spaces": "error",
    "key-spacing": ["error", { "beforeColon": false, "afterColon": true }],
    "func-call-spacing": "error",
    "computed-property-spacing": "error",
    "quotes": ["error", "single"],
    "semi-spacing": ["error"],
    "no-unreachable": "error",
    "no-const-assign": "error",
    "no-var": "error",
    "object-shorthand": "error",
    "quote-props": ["error", "as-needed"],
    "prefer-destructuring": "error",
    "prefer-template": "error",
    "template-curly-spacing": "error",
    "prefer-rest-params": "error",
    "space-before-function-paren": ["error", "never"],
    "space-before-blocks": "error",
    "no-undef": "error",
    "one-var": ["error", "never"],
    "nonblock-statement-body-position": "error",
    "brace-style": ["error", "1tbs"],
    "no-else-return": "error",
    "spaced-comment": "error",
    "indent": ["error", 2, { "SwitchCase": 1 }],
    "keyword-spacing": "error",
    "space-infix-ops": "error",
    "eol-last": "error",
    "padded-blocks": ["error", "never"],
    "space-in-parens": "error",
    "array-bracket-spacing": ["error", "never"],
    "object-curly-spacing": ["error", "always"],
    "block-spacing": "error",
    "comma-spacing": "error",
    "no-multiple-empty-lines": ["error", { "max": 1 }],
    "camelcase": "error",
    "no-multi-spaces": "error",
    "newline-per-chained-call": ["error", { "ignoreChainWithDepth": 2 }],
    "no-shadow-restricted-names": "error",
    "global-require": "error",
    "no-mixed-requires": "error",
    "max-len": ["error", {
      "code": 80,
      "ignoreUrls": true,
      "ignoreTemplateLiterals": true
    }],
    "no-cond-assign": ["error", "always"],
    "no-duplicate-case": "error",
    "no-duplicate-imports": "error"
  }
}