eslint.config.mjs

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,
});

export default [
	{
		ignores: ["**/build/", "**/.prettierrc.js", "**/.eslintrc.js", "admin/words.js"],
	},
	...compat.extends("plugin:@typescript-eslint/recommended", "plugin:prettier/recommended"),
	{
		plugins: {},

		languageOptions: {
			parser: tsParser,
			ecmaVersion: 2020,
			sourceType: "module",

			parserOptions: {
				project: "./tsconfig.json",
			},
		},

		rules: {
			"@typescript-eslint/no-parameter-properties": "off",
			"@typescript-eslint/no-explicit-any": "off",

			"@typescript-eslint/no-use-before-define": [
				"error",
				{
					functions: false,
					typedefs: false,
					classes: false,
				},
			],

			"@typescript-eslint/no-unused-vars": [
				"error",
				{
					ignoreRestSiblings: true,
					argsIgnorePattern: "^_",
				},
			],

			"@typescript-eslint/explicit-function-return-type": [
				"warn",
				{
					allowExpressions: true,
					allowTypedFunctionExpressions: true,
				},
			],

			"@typescript-eslint/no-require-imports": [
				"error",
				{
					allow: ["/package.json$", "/io-package.json$"],
				},
			],

			"@typescript-eslint/no-object-literal-type-assertion": "off",
			"@typescript-eslint/interface-name-prefix": "off",
			"@typescript-eslint/no-non-null-assertion": "off",
			"no-var": "error",
			"prefer-const": "error",
			"no-trailing-spaces": "error",
		},
	},
	{
		files: ["**/*.test.ts"],

		rules: {
			"@typescript-eslint/explicit-function-return-type": "off",
		},
	},
];