chore: update eslint-plugin-svelte to v3 (#1095)

* chore: update eslint-plugin-svelte

* fix: lint docs/**/*.svelte

Author: baseballyama

Diff for: eslint.config.js

@@ -2,7 +2,6 @@ import markdown from 'eslint-plugin-markdown';
 import globals from 'globals';
 import n from 'eslint-plugin-n';
 import svelteOrgEslintConfig from '@sveltejs/eslint-config';
-import svelteParser from 'svelte-eslint-parser';
 export default [
 	{
 		name: 'local/ignores',
@@ -19,6 +18,17 @@ export default [
 		]
 	},
 	...svelteOrgEslintConfig, // contains setup for svelte and typescript
+	{
+		name: 'local/typescript-parser-options',
+		files: ['docs/*.md/*.svelte'],
+		languageOptions: {
+			parserOptions: {
+				projectService: {
+					allowDefaultProject: ['docs/*.md/*.svelte']
+				}
+			}
+		}
+	},
 	n.configs['flat/recommended-module'],
 	...markdown.configs.recommended,
 	{
@@ -120,13 +130,6 @@ export default [
 			'prefer-const': 'off' // this turns let foo = $derived into a const otherwise
 		}
 	},
-	{
-		name: 'local/svelte-runes-globals',
-		files: ['**/*.svelte.js', '**/*.svelte.ts', '**/*.svelte.*.js', '**/*.svelte.*.ts'],
-		languageOptions: {
-			parser: svelteParser
-		}
-	},
 	{
 		name: 'local/markdown-codefences',
 		files: ['**/*.md/*.js', '**/*.md/*.ts', '**/*.md/*.svelte'],

Diff for: package.json

@@ -27,7 +27,7 @@
     "@eslint/eslintrc": "^3.3.0",
     "@eslint/js": "^9.21.0",
     "@stylistic/eslint-plugin-js": "^4.2.0",
-    "@sveltejs/eslint-config": "8.1.0",
+    "@sveltejs/eslint-config": "^8.2.0",
     "@svitejs/changesets-changelog-github-compact": "^1.2.0",
     "@types/fs-extra": "^11.0.4",
     "@types/node": "^22.13.9",
@@ -38,7 +38,7 @@
     "eslint-plugin-markdown": "^5.1.0",
     "eslint-plugin-n": "^17.16.2",
     "eslint-plugin-prettier": "^5.2.3",
-    "eslint-plugin-svelte": "^2.46.1",
+    "eslint-plugin-svelte": "^3.0.3",
     "execa": "^8.0.1",
     "fs-extra": "^11.3.0",
     "globals": "^15.15.0",

Diff for: packages/playground/big/jsconfig.json

@@ -0,0 +1,32 @@
+{
+	"compilerOptions": {
+		"moduleResolution": "bundler",
+		"target": "ESNext",
+		"module": "ESNext",
+		/**
+		 * svelte-preprocess cannot figure out whether you have
+		 * a value or a type, so tell TypeScript to enforce using
+		 * `import type` instead of `import` for Types.
+		 */
+		"verbatimModuleSyntax": true,
+		"isolatedModules": true,
+		"resolveJsonModule": true,
+		/**
+		 * To have warnings / errors of the Svelte compiler at the
+		 * correct position, enable source maps by default.
+		 */
+		"sourceMap": true,
+		"esModuleInterop": true,
+		"skipLibCheck": true,
+		/**
+		 * Typecheck JS in `.svelte` and `.js` files by default.
+		 * Disable this if you'd like to use dynamic types.
+		 */
+		"checkJs": true
+	},
+	/**
+	 * Use global.d.ts instead of compilerOptions.types
+	 * to avoid limiting type declarations.
+	 */
+	"include": ["src/**/*.d.ts", "src/**/*.js", "src/**/*.svelte"]
+}

Diff for: packages/playground/big/src/App.svelte

@@ -13,7 +13,9 @@
 <nav>
 	<h2>This is a huge app</h2>
 	{#each Object.entries(pages) as [name, cmp] (cmp)}
-		<a class="App-link" href on:click|preventDefault={go(cmp)}>{name.replace('_', ' ')}</a>
+		<a class="App-link" href={`?page=${name}`} on:click|preventDefault={go(cmp)}
+			>{name.replace('_', ' ')}</a
+		>
 	{/each}
 </nav>
 

Diff for: packages/playground/kit-demo-app/src/routes/sverdle/+page.svelte

@@ -67,9 +67,11 @@
 		const key = /** @type {HTMLButtonElement} */ (event.target).getAttribute('data-key');
 
 		if (key === 'backspace') {
+			// eslint-disable-next-line svelte/no-reactive-reassign
 			currentGuess = currentGuess.slice(0, -1);
 			if (form?.badGuess) form.badGuess = false;
 		} else if (currentGuess.length < 5) {
+			// eslint-disable-next-line svelte/no-reactive-reassign
 			currentGuess += key;
 		}
 	}
@@ -166,9 +168,9 @@
 					back
 				</button>
 
-				{#each ['qwertyuiop', 'asdfghjkl', 'zxcvbnm'] as row}
+				{#each ['qwertyuiop', 'asdfghjkl', 'zxcvbnm'] as row (row)}
 					<div class="row">
-						{#each row as letter}
+						{#each row as letter, index (index)}
 							<button
 								on:click|preventDefault={update}
 								data-key={letter}