eslint.config.mjs

import path from "node:path";
import { fileURLToPath } from "node:url";

import { FlatCompat } from "@eslint/eslintrc";
import js from "@eslint/js";
import typescriptEslint from "@typescript-eslint/eslint-plugin";
import tsParser from "@typescript-eslint/parser";
import jsxA11Y from "eslint-plugin-jsx-a11y";
import prettier from "eslint-plugin-prettier";
import react from "eslint-plugin-react";
import unusedImports from "eslint-plugin-unused-imports";
import globals from "globals";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const compat = new FlatCompat({
  baseDirectory: __dirname,
  recommendedConfig: js.configs.recommended,
  allConfig: js.configs.all,
});

export default [
  {
    ignores: [
      "**/.next/",
      "**/node_modules/",
      "**/coverage/",
      "**/__snapshots__/",
      "**/package-lock.json",
    ],
  },
  ...compat.extends(
    "plugin:react/recommended",
    "plugin:prettier/recommended",
    "plugin:jsx-a11y/recommended",
    "next",
  ),
  {
    plugins: {
      react: react,
      "unused-imports": unusedImports,
      "@typescript-eslint": typescriptEslint,
      "jsx-a11y": jsxA11Y,
      prettier: prettier,
    },

    languageOptions: {
      globals: {
        ...Object.fromEntries(
          Object.entries(globals.browser).map(([key]) => [key, "off"]),
        ),
        ...globals.node,
      },

      parser: tsParser,
      ecmaVersion: 12,
      sourceType: "module",

      parserOptions: {
        ecmaFeatures: {
          jsx: true,
        },
      },
    },

    settings: {
      react: {
        version: "detect",
      },

      next: {
        rootDir: ".",
      },
    },

    rules: {
      "react/prop-types": "off",
      "react/jsx-uses-react": "off",
      "react/react-in-jsx-scope": "off",
      "react-hooks/exhaustive-deps": "off",
      "jsx-a11y/click-events-have-key-events": "warn",
      "jsx-a11y/interactive-supports-focus": "warn",
      "prettier/prettier": "warn",
      "no-unused-vars": "off",
      "unused-imports/no-unused-vars": "off",
      "unused-imports/no-unused-imports": "warn",

      "@typescript-eslint/no-unused-vars": [
        "warn",
        {
          args: "after-used",
          ignoreRestSiblings: false,
          argsIgnorePattern: "^_.*?$",
        },
      ],

      "import/order": [
        "warn",
        {
          alphabetize: {
            order: "asc",
            caseInsensitive: true,
          },

          groups: [
            "type",
            "builtin",
            "object",
            "external",
            "internal",
            "parent",
            "sibling",
            "index",
          ],

          pathGroups: [
            {
              pattern: "~/**",
              group: "external",
              position: "after",
            },
          ],

          "newlines-between": "always",
        },
      ],

      "react/self-closing-comp": "warn",

      "react/jsx-sort-props": [
        "warn",
        {
          callbacksLast: true,
          shorthandFirst: true,
          noSortAlphabetically: false,
          reservedFirst: true,
        },
      ],

      "padding-line-between-statements": [
        "warn",
        {
          blankLine: "always",
          prev: "*",
          next: "return",
        },
        {
          blankLine: "always",
          prev: ["const", "let", "var"],
          next: "*",
        },
        {
          blankLine: "any",
          prev: ["const", "let", "var"],
          next: ["const", "let", "var"],
        },
      ],
    },
  },
];