STET

flux-pr-4539

Zod (TypeScript) · W2 · GPT-5.3 Codex

pass

Tests passed. 3/3 commands passed. Strength: weak.

69.2% run pass rate
Tier 1
primary equivalencepassedneeds generated testsweak signal riskcommand source driftequivalentpass
pnpm build
gold passagent pass
find . -name vitest.config.ts -exec sed -i 's/test: {/test: { testTimeout: 30000,/' {} +
gold passagent pass
npx vitest run packages/zod/src/v4/classic/tests/default.test.ts -t "nested\ prefault/default|failing\ default"
gold passagent pass

Partial score: 3/3

Publishable: noWeak signal risk: yesCache: miss

Trajectory

unknown · partial order only

Canonical trajectory missing; showing coarse derived order only.

patch written
Patch captured
#1

Stet captured agent.patch for this trial.

validation
Tests passed
#2
equivalence
Equivalence judgment
#3

equivalent

code review
Code review judgment
#4

pass

decision
Final decision
#5

pass

Quality

equivalence
equivalent
96% confidence
code review
pass
1 finding
footprint
medium (0.49)
behavioral
100.0%
cost
$2.28 · 834K

Equivalence Reasoning

stylistic

The agent implements the core behavioral fix by requiring both `optin` and `optout` to be `"optional"` for object-key optionality, and applies it in both object parsing (`core/schemas.ts`) and optional-key reporting (`core/util.ts`) via a helper (`isOptionalObjectKey`). This matches the intended default/prefault handling change. Added tests are aligned; the extra `node_modules/.vite/.../results.json` file appears incidental and not part of the intended logic.

Code Review

correctness: 4/4introduced bug risk: 3/4edge case handling: 3/4maintainability idioms: 3/4

The agent patch appears to satisfy the intended behavioral fix and aligns with the gold change in core logic, with useful regression tests added; the main cleanup needed is removal of an accidental generated file.

1 finding
Generated vitest cache artifact is included in patch
minor

The patch adds a `node_modules/.vite/.../results.json` file, which is a generated test artifact and should not be committed. Removing it will keep the change focused and reduce repository noise.

app/node_modules/.vite/vitest/da39a3ee5e6b4b0d3255bfef95601890afd80709/results.json:1