eslint.config.mjs

import globals from "globals";
import pluginJs from "@eslint/js";
import pluginReactConfig from "eslint-plugin-react/configs/recommended.js";
import { fixupConfigRules } from "@eslint/compat";

import pluginJest from 'eslint-plugin-jest';

export default [
  {
    files: ["**/*.{js,mjs,cjs,jsx}"],
    plugins: { jest: pluginJest },
    languageOptions: {
    },
    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',
    },
    languageOptions: {
      ecmaVersion: 2021,
      sourceType: "module",
      parserOptions: {
        ecmaFeatures: { jsx: true },
      },
      globals: {
        ...pluginJest.environments.globals.globals,
        ...globals.node,
        ...globals.browser,
      },
    },
    settings: {
      react: {
        version: "detect",
      },
    },
  },
  pluginJs.configs.recommended,
  ...fixupConfigRules(pluginReactConfig),
];