CodeSampleX

Sample

verify deepEql in pkg:npm/deep-eql@5.0.2

sha256:c798aa8129374aed9e593915fa6d9085e12d17269dd9e9e19af7b3f5437b4c8b

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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-26

Case

HOW
Goal
verify deepEql in pkg:npm/deep-eql@5.0.2
Packages
Symbols
  • deepEql
Environment
node 22.23.2
Created
2026-08-26T10:43:56Z

Contract

  1. deepEql returns true for identical primitives and false for distinct primitives
  2. deepEql treats NaN as equal to NaN and distinguishes +0 from -0
  3. deepEql evaluates Date instances by their timestamps
  4. deepEql evaluates RegExp instances by their source pattern and flags
  5. deepEql evaluates Error instances by name, message, and custom properties
  6. deepEql evaluates nested arrays, sets, and maps recursively
  7. deepEql evaluates nested objects regardless of key order and includes symbol properties
  8. deepEql handles circular references without throwing stack overflow errors
  9. deepEql supports custom comparator functions to override equality logic
  10. deepEql supports custom memoize maps via MemoizeMap

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