Return undefined on inexisting key

Author: julienmalard

src/nested.ts

@@ -112,7 +112,11 @@ export const NestedApi = ({ database }: { database: InternalDatabase }) => {
     }
     let nested: PossiblyNestedValue = toNested(relevantKeyValues);
     for (const k of splitKey(joinedKey)) {
-      nested = (nested as NestedValue)[k];
+      try {
+        nested = (nested as NestedValue)[k];
+      } catch {
+        return undefined;
+      }
     }
     return nested;
   };

test/nested.spec.ts

@@ -180,6 +180,15 @@ describe("Nested Database", () => {
       expect(actualAB).to.equal(1);
     });
 
+
+    it("get an inexisting nested key", async () => {
+      await db.put("b/c", "test");
+      await db.del("b/c");
+
+      const actual = await db.get("b/c");
+      expect(actual).to.be.undefined();
+    });
+
     it("remove a nested value", async () => {
       await db.put(["a/b"], 1);
       await db.put("a/c", 2);