.eslintrc

{
  "parser": "@babel/eslint-parser",
  "env": {
    "browser": true,
    "es6": true,
    "jest": true,
    "node": true
  },
  "extends": [
    "eslint:recommended"
  ],
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module",
    "requireConfigFile": false
  },
  "rules": {
    "indent": ["error", 2],
    "linebreak-style": ["error", "unix"],
    "no-console": 0,
    "quotes": ["error", "single"],
    "semi": ["error", "always"],
    "complexity": ["error", { "max": 3 }],
    "max-lines": ["error", { "max": 100 }],
    "max-statements": ["error", { "max": 5 },
      { "ignoreTopLevelFunctions": true }
    ]
  },
  "overrides": [
    {
      "files": [ "src/**/*.test.js" ],
      "rules": {
        "max-lines": ["error", { "max": 250 }],
        "max-statements": ["error", { "max": 15 },
          { "ignoreTopLevelFunctions": true }
        ]
      }
    }
  ]
}