.eslintrc

{
  "root": true,
  "extends": [
    "standard",
    "plugin:flowtype/recommended",
    "plugin:react/recommended",
    "prettier",
    "prettier/flowtype",
    "prettier/react",
    "prettier/standard"
  ],
  "plugins": ["flowtype", "react", "prettier", "standard", "react-hooks"],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module",
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "env": {
    "es6": true,
    "browser": true
  },
  "rules": {
    "react/prop-types": 0,
    "react/display-name": 0,
    "react-hooks/rules-of-hooks": "error", // Checks rules of Hooks
    "react-hooks/exhaustive-deps": "warn" // Checks effect dependencies
  },
  "settings": {
    "react": {
      "version": "detect",
      "flowVersion": "0.102"
    }
  },
  "overrides": [
    {
      "files": ["**/*.test.js"],
      "env": {
        "jest": true // now **/*.test.js files' env has both es6 *and* jest
      },
      // Can't extend in overrides: https://github.com/eslint/eslint/issues/8813
      // "extends": ["plugin:jest/recommended"]
      "plugins": ["jest"],
      "rules": {
        "jest/no-alias-methods": "warn",
        "jest/no-disabled-tests": "warn",
        "jest/no-focused-tests": "error",
        "jest/no-identical-title": "error",
        "jest/no-jest-import": "error",
        "jest/no-jasmine-globals": "warn",
        "jest/no-test-prefixes": "error",
        "jest/valid-describe": "error",
        "jest/valid-expect": "error",
        "jest/valid-expect-in-promise": "error"
      }
    }
  ]
}