add typescript support in svelte files, .js to .ts

package.json

@@ -25,6 +25,7 @@
 		"@sveltejs/vite-plugin-svelte": "^5.0.0",
 		"@testing-library/jest-dom": "^6.6.3",
 		"@testing-library/svelte": "^5.2.4",
+		"@tsconfig/svelte": "^5.0.4",
 		"eslint": "^9.18.0",
 		"eslint-config-prettier": "^10.0.1",
 		"eslint-plugin-svelte": "^3.0.0",
@@ -33,8 +34,9 @@
 		"prettier": "^3.4.2",
 		"prettier-plugin-svelte": "^3.3.3",
 		"svelte": "^5.0.0",
-		"svelte-check": "^4.0.0",
-		"typescript": "^5.0.0",
+		"svelte-check": "^4.2.1",
+		"svelte-preprocess": "^6.0.3",
+		"typescript": "^5.8.3",
 		"typescript-eslint": "^8.20.0",
 		"vite": "^6.2.5",
 		"vitest": "^3.0.0"