diff --git a/src/adapters/gemini-adapter.ts b/src/adapters/gemini-adapter.ts
index 579e7d3..efca8d9 100644
--- a/src/adapters/gemini-adapter.ts
+++ b/src/adapters/gemini-adapter.ts
@@ -113,7 +113,7 @@ export class GeminiAdapter extends BaseAdapter {
     const frontmatterRegex = /^---\s*\n([\s\S]*?)\n---\s*\n([\s\S]*)$/
     const match = content.match(frontmatterRegex)
 
-    if (match) {
+    if (match && match[2] !== undefined) {
       // Return content without frontmatter
       return match[2]
     }
diff --git a/tsconfig.json b/tsconfig.json
index fbb4fb1..90669d5 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -22,6 +22,10 @@
     "resolveJsonModule": true,
     "isolatedModules": true,
     "removeComments": true,
+    "moduleDetection": "force",
+    "verbatimModuleSyntax": true,
+    "noUncheckedIndexedAccess": true,
+    "noImplicitOverride": true,
   },
   "include": [
     "src/**/*",