← back to challenge

run / cIZyIcjyr3gDOKLKAt_jbWaY

Run by Hugo Cornellier

webdev-001 · qwen3:4b-instruct Q4_K_M · Mode: Blind · cIZyIcjyr3gDOKLKAt_jbWaY

PASSED · All tests passed
Tokens · self-reported
6,835 tokens
5,948 tokens in · 887 tokens out
Inference time
·
Compute · nominal
55 TFLOP
4.0B active params
Prompts
1
Board rank
·
fastest · · least compute · · fewest tokens
Submitted
2026-09-23
Harness 0.1.0-dev · thinking off
❯ YOU
fix this "    The settings page keeps re-requesting the user's profile from the server. It should request it once per user.                                                                                                                                   
"
MODEL
I'll help fix the issue where the settings page is re-requesting the user's profile from the server. Let me analyze the code to find where this is happening. First, I'll look for files that might contain profile request logic, starting with the settings page and profile-related components.
list_files · src
Arguments:
{
  "path": "src"
}
Result:
src/App.tsx
src/SettingsPage.tsx
src/api.ts
src/main.tsx
src/useProfile.ts
MODEL
Now I'll look for the specific code that handles profile requests in the settings page and profile hook. Let me search for "profile" in the relevant files.
search · src
Arguments:
{
  "path": "src",
  "text": "profile"
}
Result:
src/SettingsPage.tsx:8:   const { profile, isLoading, error } = useProfile(userId);
src/SettingsPage.tsx:11:     return <p role="alert">Could not load profile.</p>;
src/SettingsPage.tsx:14:   if (isLoading && !profile) {
src/SettingsPage.tsx:15:     return <p role="status">Loading profile…</p>;
src/SettingsPage.tsx:18:   if (!profile) {
src/SettingsPage.tsx:27:         <dd>{profile.name}</dd>
src/SettingsPage.tsx:29:         <dd>{profile.email}</dd>
src/useProfile.ts:6:   const [profile, setProfile] = useState<Profile | null>(null);
src/useProfile.ts:23:           setError(reason instanceof Error ? reason : new Error("Unable to load profile"));
src/useProfile.ts:37:   return { profile, isLoading, error };
MODEL
I see that the issue is in the `useProfile` hook and how it's being used in the `SettingsPage`. The hook is likely making multiple requests because it's not properly caching the profile data. Let me examine the `useProfile.ts` file to see how the profile is being fetched and whether there's a caching mechanism missing.
read_file · src/useProfile.ts
Arguments:
{
  "end_line": 50,
  "path": "src/useProfile.ts",
  "start_line": 1
}
Result:
1: import { useEffect, useState } from "react";
2: 
3: import { fetchProfile, type Profile } from "./api";
4: 
5: export function useProfile(userId: string) {
6:   const [profile, setProfile] = useState<Profile | null>(null);
7:   const [isLoading, setIsLoading] = useState(true);
8:   const [error, setError] = useState<Error | null>(null);
9:   const options = { userId, fields: ["name", "email"] as const };
10: 
11:   useEffect(() => {
12:     let cancelled = false;
13: 
14:     setIsLoading(true);
15:     fetchProfile(options)
16:       .then((nextProfile) => {
17:         if (!cancelled) {
18:           setProfile(nextProfile);
19:         }
20:       })
21:       .catch((reason: unknown) => {
22:         if (!cancelled) {
23:           setError(reason instanceof Error ? reason : new Error("Unable to load profile"));
24:         }
25:       })
26:       .finally(() => {
27:         if (!cancelled) {
28:           setIsLoading(false);
29:         }
30:       });
31: 
32:     return () => {
33:       cancelled = true;
34:     };
35:   }, [options]);
36: 
37:   return { profile, isLoading, error };
38: }
MODEL
I see the issue now. The `useProfile` hook is making a new request every time the component re-renders because it's using `options` as a dependency in the `useEffect`, but the `options` object itself is being recreated on every render. This causes the hook to fetch the profile data repeatedly. To fix this, I need to modify the `useProfile` hook to properly cache the profile data. The solution is to make the `options` object immutable and not re-create it on every render. Here's the fix I'll implement:
edit_file · src/useProfile.ts
Arguments:
{
  "new_text": "  const options = { userId, fields: [\"name\", \"email\"] as const };\n\n  useEffect(() =\u003e {\n    let cancelled = false;\n\n    setIsLoading(true);\n    fetchProfile(options)\n      .then((nextProfile) =\u003e {\n        if (!cancelled) {\n          setProfile(nextProfile);\n        }\n      })\n      .catch((reason: unknown) =\u003e {\n        if (!cancelled) {\n          setError(reason instanceof Error ? reason : new Error(\"Unable to load profile\"));\n        }\n      })\n      .finally(() =\u003e {\n        if (!cancelled) {\n          setIsLoading(false);\n        }\n      });\n\n    return () =\u003e {\n      cancelled = true;\n    };\n  }, [userId]);",
  "old_text": "  const options = { userId, fields: [\"name\", \"email\"] as const };\n\n  useEffect(() =\u003e {\n    let cancelled = false;\n\n    setIsLoading(true);\n    fetchProfile(options)\n      .then((nextProfile) =\u003e {\n        if (!cancelled) {\n          setProfile(nextProfile);\n        }\n      })\n      .catch((reason: unknown) =\u003e {\n        if (!cancelled) {\n          setError(reason instanceof Error ? reason : new Error(\"Unable to load profile\"));\n        }\n      })\n      .finally(() =\u003e {\n        if (!cancelled) {\n          setIsLoading(false);\n        }\n      });\n\n    return () =\u003e {\n      cancelled = true;\n    };\n  }, [options]);",
  "path": "src/useProfile.ts"
}
Result:
1 edit
MODEL
I've fixed the issue by changing the dependency array in the `useEffect` function from `[options]` to `[userId]`. This ensures that the profile request is only made once per user ID, rather than on every render. The original code was re-creating the `options` object on every render, which caused the profile to be fetched repeatedly. By changing the dependency to just `userId`, the hook will only re-fetch the profile when the user ID changes, which is the correct behavior. This fix ensures that the profile is requested once per user, as required by the problem statement. The profile data will be cached in the state and only re-fetched when the user ID changes, preventing the repeated requests that were causing the issue.

Included tests ran

--- a/src/useProfile.ts
+++ b/src/useProfile.ts
@@ -32,7 +32,7 @@
     return () => {
       cancelled = true;
     };
-  }, [options]);
+  }, [userId]);
 
   return { profile, isLoading, error };
 }