From f8e2f64316354b36099a01eef0735ec0970f5b99 Mon Sep 17 00:00:00 2001
From: Wolfgang Müller
Date: Wed, 26 Mar 2025 19:40:28 +0100
Subject: frontend: Migrate to eslint-plugin-svelte 3.0

This includes a migration to a flat eslint.config.js, which will now
also automatically ignore items from .gitignore. eslint-plugin-svelte
3.0 comes with a couple of changes to recommended rules as well, these
are also addressed in this commit.
---
 frontend/eslint.config.js | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 frontend/eslint.config.js

(limited to 'frontend/eslint.config.js')

diff --git a/frontend/eslint.config.js b/frontend/eslint.config.js
new file mode 100644
index 0000000..308fe8a
--- /dev/null
+++ b/frontend/eslint.config.js
@@ -0,0 +1,37 @@
+import { includeIgnoreFile } from '@eslint/compat';
+import js from '@eslint/js';
+import prettier from 'eslint-config-prettier';
+import svelte from 'eslint-plugin-svelte';
+import globals from 'globals';
+import { fileURLToPath } from 'node:url';
+import ts from 'typescript-eslint';
+import svelteConfig from './svelte.config.js';
+
+const gitignorePath = fileURLToPath(new URL('./.gitignore', import.meta.url));
+
+export default ts.config(
+	includeIgnoreFile(gitignorePath),
+	js.configs.recommended,
+	...ts.configs.recommended,
+	...svelte.configs.recommended,
+	prettier,
+	...svelte.configs.prettier,
+	{
+		languageOptions: {
+			globals: { ...globals.browser, ...globals.node }
+		},
+		rules: { 'no-undef': 'off' }
+	},
+	{
+		files: ['**/*.svelte', '**/*.svelte.ts', '**/*.svelte.js'],
+		ignores: ['eslint.config.js', 'svelte.config.js'],
+		languageOptions: {
+			parserOptions: {
+				projectService: true,
+				extraFileExtensions: ['.svelte'],
+				parser: ts.parser,
+				svelteConfig
+			}
+		}
+	}
+);
-- 
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