.eslintrc.json

{
  "root": true,
  "env": {
    "node": true
  },
  "parser": "@babel/eslint-parser",
  "parserOptions": {
    "sourceType": "module",
    "requireConfigFile": false,
    "ecmaFeatures": {
      "jsx": true
    },
    "babelOptions": {
      "presets": ["@babel/preset-react"]
    }
  },
  "extends": ["airbnb-base", "prettier"],
  "plugins": ["prettier"],
  "rules": {
    "max-len": 0,
    "no-bitwise": 0,
    "no-restricted-properties": 0,
    "no-restricted-syntax": 0,
    "no-param-reassign": 0,
    "no-underscore-dangle": 0,
    "one-var": 0,
    "prefer-const": 0,
    "no-continue": 0,
    "import/no-extraneous-dependencies": [2, { "devDependencies": true }],
    "no-plusplus": 0,
    "curly": [2, "all"],
    "no-restricted-globals": ["off", "isNaN"],
    "prefer-destructuring": 0,
    "no-multi-assign": 0,
    "no-return-assign": 0,
    "prettier/prettier": 2,
    "default-param-last": 1
  },
  "overrides": [
    {
      "files": ["**/*.spec.js", "**/test/**/*.js"],
      "env": {
        "node": true,
        "jest": true
      },
      "globals": {
        "chai": false,
        "expect": false,
        "sinon": false,
        "page": true,
        "browser": true,
        "context": true,
        "window": true
      },
      "parserOptions": {
        "sourceType": "module",
        "ecmaVersion": 2018
      },
      "rules": {
        "import/no-extraneous-dependencies": [
          "error",
          {
            "devDependencies": true
          }
        ],
        "no-unused-expressions": 0,
        "import/no-relative-packages": 0,
        "no-loss-of-precision": 0
      }
    }
  ]
}