sample-tictactoe/eslint.config.js

import eslint from "@eslint/js";
import tsEslint from "typescript-eslint";
import prettierEslintRecommended from "eslint-plugin-prettier/recommended";

export default tsEslint.config(
  eslint.configs.recommended,
  ...tsEslint.configs.strictTypeChecked,
  ...tsEslint.configs.stylisticTypeChecked,
  prettierEslintRecommended,
  {
    languageOptions: {
      parserOptions: {
        projectService: true,
        tsconfigRootDir: import.meta.dirname,
      },
    },
  },
  {
    rules: {
      "@typescript-eslint/consistent-type-definitions": ["error", "type"],
      "@typescript-eslint/restrict-template-expressions": ["error", { allowNumber: true, allowNever: true }],
    },
  },
  {
    files: ["**/*.spec.*"],
    rules: {
      // To make it easier to pass incorrect data to functions under test
      "@typescript-eslint/no-explicit-any": "off",
      "@typescript-eslint/no-unsafe-argument": "off",
      "@typescript-eslint/no-unsafe-assignment": "off",

      // With async test suites in TAP, we don't have to explicitly call t.end
      // (because TAP automatically determines that all assertions are done when the promise is settled),
      // so using async functions even when they don't have any awaits in them
      "@typescript-eslint/require-await": "off",
    },
  },
);