Sample
uuid 14.0.1: uuid.v4 with a buffer returns the Uint8Array instance rather than a string, uuid.version throws TypeError on non-UUID strings rather than returning undefined, and uuid.validate strictly checks RFC variant bits while rejecting Buffer inputs
Verified sample for npm uuid 14.0.1: uuid.v4 with a buffer returns the Uint8Array instance rather than a string, uuid.version throws TypeError on non-UUID…
sha256:955137ce092355d5a4ee5c8fd7417cc7865cfdbf475352a54b2151e6aa2d0491
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
- uuid.v4 with a buffer returns the Uint8Array instance rather than a string, uuid.version throws TypeError on non-UUID strings rather than returning undefined, and uuid.validate strictly checks RFC variant bits while rejecting Buffer inputs
- Packages
- Symbols
-
- uuid.v4
- uuid.validate
- uuid.version
- Environment
- node
- Created
- 2026-08-16T07:25:02Z
Contract
- uuid.v4(null, buf, offset) writes 16 bytes into buf at offset and returns buf (Uint8Array), not string
- uuid.v4({ random: rnd }) mutates bytes 6 and 8 in the passed random buffer to set version 4 and RFC variant
- uuid.version(str) throws TypeError when string is invalid UUID instead of returning undefined or null
- uuid.version(NIL) returns 0 and uuid.version(MAX) returns 15
- uuid.validate(buf) returns false for Uint8Array / Buffer inputs without throwing
- uuid.validate(str) returns false for 8-4-4-4-12 strings with non-RFC variant nibbles
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs