check api key

package.json

@@ -11,8 +11,8 @@
     "check": "./node_modules/@sveltejs/kit/svelte-kit.js sync && ./node_modules/svelte-check/bin/svelte-check --tsconfig ./tsconfig.json",
     "check:watch": "./node_modules/@sveltejs/kit/svelte-kit.js sync && svelte-check --tsconfig ./tsconfig.json --watch",
     "format": "prettier --write .",
-    "format:check": "prettier --check",
+    "format:check": "./node_modules/prettier/bin/prettier.cjs . --check",
-    "lint:check": "oxlint ."
+    "lint:check": "./node_modules/oxlint/bin/oxlint ."
   },
   "devDependencies": {
     "@eslint/compat": "^1.4.0",

src/lib/server/LanguageService.ts

@@ -73,6 +73,10 @@ class LanguageService {
       url.searchParams.append('languages', lang)
     }
 
+    if (!env.TOLGEE_API_KEY) {
+      throw new Error('TOLGEE_API_KEY not set')
+    }
+
     const response = await fetch(url, {
       method: 'GET',
       headers: {