CodeSampleX

Sample

buffer-image-size 0.6.4

Verified sample for npm buffer-image-size 0.6.4. The contract ran on node 22 · linux alpine/x64 · docker and passed: buffer-image-size parses PNG image…

sha256:0a4afbf84a8c71de8c98590e65a0a727b396b8c6f34c956198cb75c3ef09bd47

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
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

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 pkg:npm/buffer-image-size@0.6.4
Packages
Environment
node 22.23.2
Created
2026-08-20T13:10:57Z

Contract

  1. buffer-image-size parses PNG image buffers and extracts width, height, and type
  2. buffer-image-size parses GIF image buffers and extracts width, height, and type
  3. buffer-image-size parses BMP image buffers and extracts width, height, and type
  4. buffer-image-size parses SVG image buffers with dimension attributes
  5. buffer-image-size exports the list of supported image format types
  6. buffer-image-size throws TypeError for non-buffer inputs and unsupported image buffers

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous