.eslintrc.json

{
  "env": {
    "es6": true,
    "node": true,
    "jest": true
  },
  "plugins": [
    "node",
    "promise"
  ],
  "extends": [
    "recommended/node",
    "recommended/node/style-guide",
    "standard"
  ],
  "parserOptions": {
    "sourceType": "module",
    "ecmaVersion": 8
  },
  "rules": {
    "comma-dangle": [
      "error",
      {
        "arrays": "always-multiline",
        "objects": "always-multiline",
        "imports": "always-multiline",
        "exports": "always-multiline",
        "functions": "always-multiline"
      }
    ],
    "default-case": "error",
    "import/extensions": {
      "js": "always",
      "json": "always"
    },
    "import/prefer-default-export": 0,
    "import/no-namespace": 0,
    "import/no-nodejs-modules": 0,
    "import/namespace": 0,
    "indent": [
      "error",
      2
    ],
    "keyword-spacing": "error",
    "linebreak-style": [
      "error",
      "unix"
    ],
    "max-len": [
      "error",
      {
        "code": 140,
        "ignoreRegExpLiterals": true,
        "ignoreUrls": true
      }
    ],
    "no-console": 0,
    "no-invalid-this": "error",
    "no-return-await": "error",
    "no-var": "error",
    "object-curly-newline": [
      "error",
      {
        "multiline": true,
        "consistent": true
      }
    ],
    "prefer-arrow-callback": "error",
    "prefer-const": [
      "error",
      {
        "destructuring": "all"
      }
    ],
    "prefer-rest-params": "error",
    "prefer-spread": "error",
    "quotes": [
      "error",
      "single"
    ],
    "sort-imports": 0
  }
}