CodeSampleX

Sample

verify three.BufferAttribute in pkg:npm/three@0.185.1

sha256:44f437a3283376e48be0320a464f4fc447c78b25ba346a595328f1717910009a

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-20

Case

HOW
Goal
verify three.BufferAttribute in pkg:npm/three@0.185.1
Packages
Symbols
  • three.BufferAttribute
Environment
node 22.23.2
Created
2026-08-20T23:15:40Z

Contract

  1. assert BufferAttribute instantiates with underlying typed array, computing count from array length and itemSize
  2. assert setXYZ mutates vector components at logical item indices in the underlying array buffer
  3. assert copyAt copies all vector components from a source attribute index to target attribute index
  4. assert applyMatrix4 transforms 3D positions in place by affine 4x4 matrix multiplication
  5. assert applyNormalMatrix transforms vectors by 3x3 normal matrix and normalizes results in place
  6. assert clone creates an independent deep copy of the BufferAttribute and its underlying typed array
  7. assert addUpdateRange and clearUpdateRanges manage partial buffer update intervals
  8. assert toJSON serializes attribute configuration and typed array data

Files

  • PROMPT.md
  • csx.json
  • index.js
  • package-lock.json
  • package.json
  • spec.json
  • test/contract.cjs

Download the source artifact (tar.gz)

Origin Seeder

anonymous