.eslintrc

{
  "parser": "@babel/eslint-parser",
  "parserOptions": {
    "sourceType": "module",
    "allowImportExportEverywhere": false,
    "ecmaFeatures": {
      "jsx": true,
      "globalReturn": false
    },
    "babelOptions": {
      "configFile": "./.babelrc"
    }
  },
  "extends": [
    "eslint:recommended",
    "plugin:react/recommended",
    "eslint-config-prettier"
  ],
  "rules": {},
  "env": {
    "browser": true,
    "amd": true,
    "node": true,
    "es6": true,
  },
  "plugins": [
    "react"
  ],
  "settings": {
    "react": {
      "createClass": "createReactClass", // Regex for Component Factory to use,
      // default to "createReactClass"
      "pragma": "React", // Pragma to use, default to "React"
      "fragment": "Fragment", // Fragment to use (may be a property of <pragma>), default to "Fragment"
      "version": "detect", // React version. "detect" automatically picks the version you have installed.
      // You can also use `16.0`, `16.3`, etc, if you want to override the detected value.
      // default to latest and warns if missing
      // It will default to "detect" in the future
      "flowVersion": "0.53" // Flow version
    },
    "propWrapperFunctions": [
      // The names of any function used to wrap propTypes, e.g. `forbidExtraProps`. If this isn't set, any propTypes wrapped in a function will be skipped.
      "forbidExtraProps",
      {
        "property": "freeze",
        "object": "Object"
      },
      {
        "property": "myFavoriteWrapper"
      }
    ],
    "linkComponents": [
      // Components used as alternatives to <a> for linking, eg. <Link to={ url } />
      "Hyperlink",
      {
        "name": "Link",
        "linkAttribute": "to"
      }
    ]
  },
  "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",
        "jest-dom",
        "testing-library"
      ],
      "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",
        "testing-library/await-async-query": "error",
        "testing-library/no-await-sync-query": "error",
        "testing-library/no-debugging-utils": "warn",
        "testing-library/no-dom-import": "off",
        "jest-dom/prefer-checked": "error",
        "jest-dom/prefer-enabled-disabled": "error",
        "jest-dom/prefer-required": "error",
        "jest-dom/prefer-to-have-attribute": "error",
      }
    }
  ]
}