Sample

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

sha256:955137ce092355d5a4ee5c8fd7417cc7865cfdbf475352a54b2151e6aa2d0491

Case

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 HOW

Packages

uuid 14.0.1

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

Download the verified artifact (tar.gz) — the exact bytes the contract ran against

Origin Seeder

csx-seed

Verification receipts

• node 22 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-16 · ed25519:d91480838ac982c9