Fix Svelte editor tooling not working under relaxed TypeScripts proje…

…cts (#10244)

* fix(svelte): Add TypeScript as a peer dep

* Update .changeset/gold-baboons-drum.md

.changeset/gold-baboons-drum.md

@@ -0,0 +1,5 @@
+---
+"@astrojs/svelte": minor
+---
+
+Adds TypeScript as a required peer dependency as it is required for Svelte's editor tooling to work correctly.

package.json

@@ -81,13 +81,6 @@
           }
         }
       },
-      "svelte2tsx": {
-        "peerDependenciesMeta": {
-          "typescript": {
-            "optional": true
-          }
-        }
-      },
       "rehype-pretty-code": {
         "peerDependenciesMeta": {
           "shiki": {

packages/integrations/svelte/package.json

@@ -43,7 +43,7 @@
   },
   "dependencies": {
     "@sveltejs/vite-plugin-svelte": "^3.0.0",
-    "svelte2tsx": "^0.6.25"
+    "svelte2tsx": "^0.6.27"
   },
   "devDependencies": {
     "astro": "workspace:*",
@@ -53,7 +53,8 @@
   },
   "peerDependencies": {
     "astro": "^4.0.0",
-    "svelte": "^4.0.0 || ^5.0.0-next.56"
+    "svelte": "^4.0.0 || ^5.0.0-next.56",
+    "typescript": "^5.3.3"
   },
   "engines": {
     "node": ">=18.14.1"