Sample
Handle jsonwebtoken verify return envelope shapes, sign claim option collisions, and duration units
sha256:db08d34218a323680c118afa134f755bba43d7cabe50ec8738997d1c4a5b68f0
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Case
- Goal
- Handle jsonwebtoken verify return envelope shapes, sign claim option collisions, and duration units HOW
- Packages
- jsonwebtoken 9.0.3
- Environment
- node
- Created
- 2026-08-16T12:10:28Z
Commonly assumed
jwt.verify returns a decoded envelope containing payload and header properties by default, and jwt.sign merges payload registered claims with signing options.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- assert jwt.verify returns payload claims directly at root and leaves .payload undefined unless complete: true is specified
- assert jwt.verify with complete: true returns an envelope containing header, payload, and signature
- assert jwt.sign throws a runtime error when registered claims like exp, aud, or iss exist in both payload and options
- assert numeric expiresIn is interpreted as relative duration in seconds rather than milliseconds or an absolute timestamp
- assert signing a string payload produces a raw string on verify and rejects expiresIn option
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/index.mjs
- test/contract.mjs
Download the verified artifact (tar.gz) — the exact bytes the contract ran against
Origin Seeder
Verification receipts
- node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-16 · ed25519:d91480838ac982c9