Sample
express 5.2.1: Prove res.cookie defaults path to root slash and prefixes object values with j: when options are unset
Verified sample for npm express 5.2.1: Prove res.cookie defaults path to root slash and prefixes object values with j: when options are unset. The contract…
sha256:d4ab5839a81d17d3cc68dcca0a434448c6f1bcf7860e96ad1c02189932468d70
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
- Prove res.cookie defaults path to root slash and prefixes object values with j: when options are unset
- Packages
- Symbols
-
- express
- res.cookie
- Environment
- node
- Created
- 2026-08-16T16:29:57Z
Contract
- res.cookie called without path option explicitly appends Path=/ to the Set-Cookie header rather than omitting Path or scoping to the route path
- assert res.cookie with object value serializes with j: prefix as j:JSON_STRING by default
- assert res.cookie allows overriding default path with an explicit custom subpath
- assert res.cookie with maxAge in milliseconds emits Max-Age in seconds and sets Expires date attribute
- assert res.cookie encodes cookie values using encodeURIComponent by default
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs