.eslintrc

{
  "root": true,
  "env": {
    "node": true,
    "commonjs": true,
    "es6": true,
    "jquery": false,
    "jest": true,
    "jasmine": true
  },
  "plugins": [
    "node",
    "jest"
  ],
  "extends": "eslint:recommended",
  "parserOptions": {
    "sourceType": "module",
    "ecmaFeatures": {
      "experimentalObjectRestSpread": true
    }
  },
  "rules": {
    "no-var": [
      "error"
    ],
    "no-console": [
      "off"
    ],
    "no-mixed-spaces-and-tabs": [
      "warn"
    ],
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1
      }
    ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
      "error",
      "never"
    ],
    "max-lines": [
      "error",
      {
        "max": 120,
        "skipBlankLines": true,
        "skipComments": true
      }
    ],
    "max-depth": [
      "error",
      3
    ],
    "max-params": [
      "error",
      4
    ],
    "no-unused-vars": [
      "warn",
      {
        "args": "none"
      }
    ],
    "max-len": [
      "error",
      {
        "code": 120,
        "tabWidth": 2,
        "comments": 200
      }
    ],
    "jest/no-large-snapshots": [
      "warn"
    ],
    "jest/no-identical-title": "error",
    "jest/valid-expect-in-promise": "error",
    "node/no-unsupported-features/es-syntax": [
      "error"
    ]
  },
  "overrides": [
    {
      "files": [
        "*.test.js",
        "*.spec.js"
      ],
      "rules": {
        "max-lines": [
          "error",
          300
        ]
      }
    }
  ]
}