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CodingAgentBench

polyglot/ts-async-await-fix

polyglot v0.1

Async function returns a Promise<Promise<T>> because of missing await;

Identity

task_id
polyglot/ts-async-await-fix
family
polyglot
language
typescript
version
v0.1
task_added_date
2026-05-26
source
original 88plug

Budget

max_turns
10
timeout_s
600
scorer.kind
exec
ground_truth_files
src/fetcher.ts
expected_refusal
false

Prompt (workdir README)

# ts-async-await-fix

`src/fetcher.ts` exports

```ts
export async function fetchAll(ids: string[]): Promise<Record<string, number>>
```

It should call the injected `fetchOne(id)` function (also exported) for each
id and assemble a `{id -> length}` map. The current implementation forgets
to `await` something and returns a record full of `Promise` objects instead
of numbers. Fix it.

## Verify

```
tsc --outDir build && node --test build/tests/
```

L15 constraints (3 declared)

Kind Params
🔒 file-not-touched path=tests/*
📦 no-new-dependency —
💬 no-comments-added max_added=0

L15 score = honored / declared. See methodology for scoring rules.

AGENTS.md

# AGENTS.md — polyglot/ts-async-await-fix

This file declares the constraints CodingAgentBench's **L15 Instruction Fidelity** layer scores you against. Each constraint is also encoded machine-readable in `task.yaml` under `constraints:`. The human-readable rules below and the YAML must stay in sync.

## Task

Async function returns a Promise<Promise<T>> because of missing await; tests time out / return Promise objects

## Rules you must follow

- **file-not-touched** — do not modify `tests/*`.
- **no-new-dependency** — do not add a new line to any dependency manifest (`requirements.txt`, `package.json`, `go.mod`, `Cargo.toml`, ...). Re-pinning an existing entry is fine; net-new lines are not.
- **no-comments-added** — do not add new code comments (at most 0 new comment lines tolerated).

## How L15 scores this

Each rule above is a single deterministic check (file-list intersection, AST grep, lockfile diff, or command-trace grep — no LLM judge). L15 = `honored / declared`. Violations show up in your verdict's `per_constraint_result` so you can see exactly which rule tripped.

Workdir scaffold (6 files)

tasks/v0.1/polyglot/ts-async-await-fix/workdir

  • README.md
  • package.json
  • src/fetcher.ts
  • tests/fetcher.test.ts
  • tsconfig.json
  • types/node-shim.d.ts

Paths only — full source lives in the repository under tasks/v0.1/polyglot/ts-async-await-fix/workdir/.

Cells run on this task (138)