@mdn/bob/eslint.config.mjs

Builder of Bits aka The MDN Web Docs interactive examples, example builder

import {
  fixupConfigRules,
  fixupPluginRules,
  includeIgnoreFile,
} from "@eslint/compat";
import typescriptEslint from "@typescript-eslint/eslint-plugin";
import _import from "eslint-plugin-import";
import globals from "globals";
import tsParser from "@typescript-eslint/parser";
import path from "node:path";
import { fileURLToPath } from "node:url";
import js from "@eslint/js";
import { FlatCompat } from "@eslint/eslintrc";

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,
});
const prettierignorePath = path.resolve(__dirname, ".prettierignore");

export default [
  includeIgnoreFile(prettierignorePath),
  ...fixupConfigRules(
    compat.extends(
      "eslint:recommended",
      "plugin:@typescript-eslint/recommended",
      "plugin:import/errors",
      "plugin:import/typescript",
      "plugin:jest/recommended",
      "prettier",
    ),
  ),
  {
    plugins: {
      "@typescript-eslint": fixupPluginRules(typescriptEslint),
      import: fixupPluginRules(_import),
    },

    languageOptions: {
      globals: {
        ...globals.browser,
        ...globals.node,
        ...globals.jest,
        page: true,
      },

      parser: tsParser,
      ecmaVersion: 2020,
      sourceType: "module",
    },

    settings: {
      "import/resolver": {
        typescript: true,
        node: true,
      },
    },

    rules: {
      "@typescript-eslint/no-explicit-any": "off",
      "@typescript-eslint/no-unused-expressions": "error",
    },
  },
];