⚙️ Migrate eslint config to v9

.eslintrc.cjs

@@ -1,30 +0,0 @@
-module.exports = {
-	root: true,
-	extends: [
-		'eslint:recommended',
-		'plugin:@typescript-eslint/recommended',
-		'plugin:svelte/recommended',
-		'prettier'
-	],
-	parser: '@typescript-eslint/parser',
-	plugins: ['@typescript-eslint'],
-	parserOptions: {
-		sourceType: 'module',
-		ecmaVersion: 2020,
-		extraFileExtensions: ['.svelte']
-	},
-	env: {
-		browser: true,
-		es2017: true,
-		node: true
-	},
-	overrides: [
-		{
-			files: ['*.svelte'],
-			parser: 'svelte-eslint-parser',
-			parserOptions: {
-				parser: '@typescript-eslint/parser'
-			}
-		}
-	]
-};

eslint.config.js

@@ -0,0 +1,33 @@
+import js from '@eslint/js';
+import ts from 'typescript-eslint';
+import svelte from 'eslint-plugin-svelte';
+import prettier from 'eslint-config-prettier';
+import globals from 'globals';
+
+/** @type {import('eslint').Linter.Config[]} */
+export default [
+  js.configs.recommended,
+  ...ts.configs.recommended,
+  ...svelte.configs['flat/recommended'],
+  prettier,
+  ...svelte.configs['flat/prettier'],
+  {
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.node
+      }
+    }
+  },
+  {
+    files: ['**/*.svelte'],
+    languageOptions: {
+      parserOptions: {
+        parser: ts.parser
+      }
+    }
+  },
+  {
+    ignores: ['build/', '.svelte-kit/', 'dist/']
+  }
+];