eslint.config.js

import prettier from "eslint-config-prettier";
import path from "node:path";
import { includeIgnoreFile } from "@eslint/compat";
import js from "@eslint/js";
import svelte from "eslint-plugin-svelte";
import { defineConfig } from "eslint/config";
import globals from "globals";
import ts from "typescript-eslint";
import { loadConfig } from "@sveltejs/load-config";

const svelteConfig = (await loadConfig("./", { traverse: false }))?.config;

const gitignorePath = path.resolve(import.meta.dirname, ".gitignore");

export default defineConfig(
	includeIgnoreFile(gitignorePath),
	js.configs.recommended,
	ts.configs.recommendedTypeChecked,
	ts.configs.strictTypeChecked,
	ts.configs.stylisticTypeChecked,
	svelte.configs.recommended,
	prettier,
	svelte.configs.prettier,
	{
		languageOptions: {
			globals: { ...globals.browser, ...globals.node },
			parserOptions: { projectService: true }
		},
		rules: {
			// typescript-eslint strongly recommend that you do not use the no-undef lint rule on TypeScript projects.
			// see: https://typescript-eslint.io/troubleshooting/faqs/eslint/#i-get-errors-from-the-no-undef-rule-about-global-variables-not-being-defined-even-though-there-are-no-typescript-errors
			"no-undef": "off"
		}
	},
	{
		files: ["**/*.svelte", "**/*.svelte.ts", "**/*.svelte.js"],
		languageOptions: {
			parserOptions: {
				projectService: true,
				extraFileExtensions: [".svelte"],
				parser: ts.parser,
				svelteConfig
			}
		}
	},
	{
		// Override or add rule settings here, such as:
		// 'svelte/button-has-type': 'error'
		rules: {
			"svelte/html-self-closing": [
				"error",
				"default" // or "all" or "html" or "none"
			]
		}
	}
);