diff --git a/.gitignore b/.gitignore
index 564dac4..55e76e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 node_modules
 build/
 coverage
+.vscode
diff --git a/biome.json b/biome.json
index 9d72b1d..766bc40 100644
--- a/biome.json
+++ b/biome.json
@@ -3,8 +3,10 @@
   "organizeImports": {
     "enabled": true
   },
-  "files": {
-    "ignore": ["coverage", "build"]
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true
   },
   "linter": {
     "enabled": true,
diff --git a/src/index.ts b/src/index.ts
index 3add05a..9bcf964 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -16,7 +16,7 @@ interface Cond {
   <T, F extends undefined>(pairs: Pairs<T>, options?: F): T | undefined;
   <T1, F1 extends Value<T1>>(
     pairs: Pairs<T1>,
-    options?: { default: F1 }
+    options?: { default: F1 },
   ): F1 extends Value<T1> ? T1 : T1 | undefined;
   <T2>(pairs: Pairs<T2>, options?: Options<T2>): T2 | undefined;
 }