❯ YOU
Think first about which file most likely causes this, read it, then fix it in one edit_file call. Do not run tests. Answer only: done.
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run / Dw9yuj7KeNb9s4i5GXPyDzi1
Run by ZoomLinen9140
PASSED · All tests passed
Run summary
- Tokens · self-reported
- 9,151 tokens
- 8,193 tokens in · 958 tokens out
- Inference time
- 10.5 s
- Apple M4 Max, 48 GB
- Compute · nominal
- 74 TFLOP
- 4.0B active params
- Prompts
- 1
- Board rank
- #4
- fastest · #7 least compute · #7 fewest tokens
- Submitted
- 2026-09-23
- Harness 0.1.2-dev · thinking off
Conversation
MODEL
list_files · src
Arguments:
{
"path": "src"
}
Result:
src/App.tsx
src/SettingsPage.tsx
src/api.ts
src/main.tsx
src/useProfile.tsMODEL
search · src
Arguments:
{
"path": "src",
"text": "requestProfile"
}
Result:
MODEL
search · src/useProfile.ts
Arguments:
{
"path": "src/useProfile.ts",
"text": "profile"
}
Result:
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
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
read_file · src/SettingsPage.tsx
Arguments:
{
"end_line": 50,
"path": "src/SettingsPage.tsx",
"start_line": 1
}
Result:
1: import { useProfile } from "./useProfile";
2:
3: interface SettingsPageProps {
4: userId: string;
5: }
6:
7: export function SettingsPage({ userId }: SettingsPageProps) {
8: const { profile, isLoading, error } = useProfile(userId);
9:
10: if (error) {
11: return <p role="alert">Could not load profile.</p>;
12: }
13:
14: if (isLoading && !profile) {
15: return <p role="status">Loading profile…</p>;
16: }
17:
18: if (!profile) {
19: return null;
20: }
21:
22: return (
23: <main>
24: <h1>Settings</h1>
25: <dl>
26: <dt>Name</dt>
27: <dd>{profile.name}</dd>
28: <dt>Email</dt>
29: <dd>{profile.email}</dd>
30: </dl>
31: </main>
32: );
33: }MODEL
The issue is in `src/useProfile.ts` where the `useEffect` is re-triggered on every render due to the dependency array including `options`, which contains `userId`. However, the `userId` is not changing, so the effect should only run once per user. The current implementation is correct in that it uses a cleanup function to cancel requests, but the problem is that the effect is being re-run on every render, which causes multiple requests.
The fix is to ensure that the effect runs only once per user by not including `options` in the dependency array. Instead, we should use the `userId` directly in the effect.
Here's the fix:
```diff
- useEffect(() => {
- let cancelled = false;
-
- setIsLoading(true);
- fetchProfile(options)
- .then((nextProfile) => {
- if (!cancelled) {
- setProfile(nextProfile);
- }
- })
- .catch((reason: unknown) => {
- if (!cancelled) {
- setError(reason instanceof Error ? reason : new Error("Unable to load profile"));
- }
- })
- .finally(() => {
- if (!cancelled) {
- setIsLoading(false);
- }
- });
-
- return () => {
- cancelled = true;
- };
- }, [options]);
```
Change it to:
```ts
useEffect(() => {
let cancelled = false;
setIsLoading(true);
fetchProfile({ userId, fields: ["name", "email"] as const })
.then((nextProfile) => {
if (!cancelled) {
setProfile(nextProfile);
}
})
.catch((reason: unknown) => {
if (!cancelled) {
setError(reason instanceof Error ? reason : new Error("Unable to load profile"));
}
})
.finally(() => {
if (!cancelled) {
setIsLoading(false);
}
});
return () => {
cancelled = true;
};
}, [userId]);
```
This ensures that the effect runs only once per user, and the profile is fetched only once.
Now, I'll apply this change.
edit_file · src/useProfile.ts
Arguments:
{
"new_text": " useEffect(() =\u003e {\n let cancelled = false;\n \n setIsLoading(true);\n fetchProfile({ userId, fields: [\"name\", \"email\"] as const })\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": " 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 (matched after removing one leading space from each line)MODEL
done
Included tests ran
Final patch
--- a/src/useProfile.ts
+++ b/src/useProfile.ts
@@ -12,7 +12,7 @@
let cancelled = false;
setIsLoading(true);
- fetchProfile(options)
+ fetchProfile({ userId, fields: ["name", "email"] as const })
.then((nextProfile) => {
if (!cancelled) {
setProfile(nextProfile);
@@ -32,7 +32,7 @@
return () => {
cancelled = true;
};
- }, [options]);
+ }, [userId]);
return { profile, isLoading, error };
}