.eslintrc.json

{
  "env": {
    "browser": true,
    "node": true,
    "es2021": true,
    "jest/globals": true
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "prettier",
    "plugin:testing-library/dom",
    "plugin:testing-library/react",
    "plugin:jest-dom/recommended"
  ],
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 12,
    "sourceType": "module"
  },
  "plugins": ["react", "prettier", "jest", "testing-library", "jest-dom"],
  "settings": {
    "react": {
      "version": "detect"
    }
  },
  "rules": {
    // Disable prop-types as we use TypeScript for type checking
    "react/prop-types": "off",
    "prettier/prettier": "error",
    // needed for NextJS's jsx without react import
    "react/react-in-jsx-scope": "off",
    "react/no-unescaped-entities": 0,
    // jest rules
    "jest/no-disabled-tests": "warn",
    "jest/no-focused-tests": "error",
    "jest/no-identical-title": "error",
    "jest/prefer-to-have-length": "warn",
    "jest/valid-expect": "error"
  },
  "globals": { "React": "writable" }
}