fix(util-user-agent-node): address feedbacks

Co-authored-by: Tyson Andre <[email protected]>

Author: AllanZhengYP

packages/util-user-agent-node/src/index.spec.ts

@@ -59,9 +59,8 @@ describe("defaultUserAgent", () => {
     mockAppIdLoader.mockClear();
     const appId = "appId12345";
     mockAppIdLoader.mockResolvedValue(appId);
-    const userAgnetProvider = defaultUserAgent({ serviceId: "s3", clientVersion: "0.1.0" });
-    await userAgnetProvider();
-    await userAgnetProvider();
+    const userAgentProvider = defaultUserAgent({ serviceId: "s3", clientVersion: "0.1.0" });
+    expect(await userAgentProvider()).toEqual(await userAgentProvider());
     expect(mockAppIdLoader).toBeCalledTimes(1);
   });
 });

packages/util-user-agent-node/src/index.ts

@@ -43,11 +43,11 @@ export const defaultUserAgent = ({ serviceId, clientVersion }: DefaultUserAgentO
     default: undefined,
   })();
 
+  let resolvedUserAgent: UserAgent | undefined = undefined;
   return async () => {
-    const appId = await appIdPromise;
-    if (appId) {
-      sections.push([`app/${appId}`]);
+    if (!resolvedUserAgent) {
+      resolvedUserAgent = [...sections, [`app/${await appIdPromise}`]];
     }
-    return sections;
+    return resolvedUserAgent;
   };
 };