diff --git a/.gitignore b/.gitignore
index 492f1bac..91a2bf95 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ flamegraph.svg
 target
 dhat-heap.json
 .DS_Store
+node_modules/
diff --git a/crates/loro-wasm/deno_test/test.ts b/crates/loro-wasm/deno_test/test.ts
index 47431845..1119188d 100644
--- a/crates/loro-wasm/deno_test/test.ts
+++ b/crates/loro-wasm/deno_test/test.ts
@@ -226,6 +226,8 @@ Deno.test("transaction", async () => {
     assertEquals(count, 0);
     text.insert(txn, 0, "hello world");
     assertEquals(count, 0);
+    txn.commit();
+    txn.free();
   });
   await one_ms();
   assertEquals(count, 1);
@@ -246,6 +248,8 @@ Deno.test("transaction origin", async () => {
     assertEquals(count, 0);
     text.insert(txn, 0, "hello world");
     assertEquals(count, 0);
+    txn.commit();
+    txn.free();
   });
   await one_ms();
   assertEquals(count, 1);