Sample
uuid 14.0.1: Supply a 16-byte Uint8Array generator to v4 options.rng for deterministic entropy and decode buffer outputs with stringify
Verified sample for npm uuid 14.0.1: Supply a 16-byte Uint8Array generator to v4 options.rng for deterministic entropy and decode buffer outputs with…
sha256:3dad9d47b302dcfbbddb1d03c9bb8e3c19e51dba749ec10e59342ea124bb1952
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
- Supply a 16-byte Uint8Array generator to v4 options.rng for deterministic entropy and decode buffer outputs with stringify
- Packages
- Symbols
-
- v4
- stringify
- validate
- version
- Environment
- node
- Created
- 2026-08-16T07:08:04Z
Contract
- assert v4({ rng: () => Math.random() }) throws TypeError when given a scalar random float callback
- assert v4({ rng: byteSupplier }) returns a valid v4 UUID string with RFC4122 version and variant bits applied
- assert v4(options, buf, offset) writes raw bytes directly into buf and returns the buffer reference instead of a string
- assert stringify(buf, offset) decodes the canonical UUID string from the binary buffer
- assert v4(options, buf, offset) throws RangeError when target buffer is smaller than 16 bytes
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/index.mjs
- test/contract.mjs