Sample
zod 4.4.3: Restore .catch() fallback and preprocess evaluation for absent keys in z.object schemas fixed in zod 4.4.3
Verified sample for npm zod 4.4.3: Restore .catch() fallback and preprocess evaluation for absent keys in z.object schemas fixed in zod 4.4.3. The contract…
sha256:30dbed125fd6944057a2d3d053851104df423c6580f301a14ce9d4143dcf07d1
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
node linux x64 node node npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-16 |
| node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-18 |
Case
HOW- Goal
- Restore .catch() fallback and preprocess evaluation for absent keys in z.object schemas fixed in zod 4.4.3
- Packages
- Symbols
-
- z.object
- z.ZodType.catch
- z.preprocess
- Environment
- node
- Created
- 2026-08-16T04:51:32Z
Contract
- assert z.object with .catch() fallback on an enum field successfully returns the catch value when key is absent in input object
- assert z.object with .catch() fallback on a string and a number field returns both catch values when input object is empty
- assert z.object with .catch() fallback on a number field returns the catch value when string field is explicitly provided
- assert z.object with z.preprocess() receives undefined for absent keys and resolves the default fallback value
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/schemas.mjs
- test/contract.mjs