diff --git a/y-octo-node/src/doc.ts b/y-octo-node/src/doc.ts
index 80524dd..e35a02b 100644
--- a/y-octo-node/src/doc.ts
+++ b/y-octo-node/src/doc.ts
@@ -10,7 +10,7 @@ export class Doc extends Y.Doc {
     new Set();
   private lastState: Buffer | null = null;
 
-  getArray(key: string): Array {
+  getArray(key = ""): Array {
     if (this.cachedArray.has(key)) {
       return this.cachedArray.get(key)!;
     }
@@ -19,7 +19,7 @@ export class Doc extends Y.Doc {
     return yarray;
   }
 
-  getMap(key: string): Map {
+  getMap(key = ""): Map {
     if (this.cachedMap.has(key)) {
       return this.cachedMap.get(key)!;
     }
@@ -28,7 +28,7 @@ export class Doc extends Y.Doc {
     return ymap;
   }
 
-  getText(key: string): Text {
+  getText(key = ""): Text {
     return this.getOrCreateText(key);
   }
 
diff --git a/y-octo-node/tests/yjs/doc.spec.ts b/y-octo-node/tests/yjs/doc.spec.ts
index 6f3f0f6..dc8a74a 100644
--- a/y-octo-node/tests/yjs/doc.spec.ts
+++ b/y-octo-node/tests/yjs/doc.spec.ts
@@ -50,7 +50,7 @@ test("testClientIdDuplicateChange", (t) => {
   t.assert(doc2.clientId !== doc1.clientId);
 });
 
-test.skip("testGetTypeEmptyId", (t) => {
+test("testGetTypeEmptyId", (t) => {
   const doc1 = new Y.Doc();
   doc1.getText("").insert(0, "h");
   doc1.getText().insert(1, "i");