CodeSampleX

Sample

verify pkg:npm/%40vitest/expect@3.2.7

sha256:a16f0d95fbaf1cf216abebff9f54d698ec8010a0c4d7142d955b3710c23d7109

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
2026-08-21

Case

HOW
Goal
verify pkg:npm/%40vitest/expect@3.2.7
Packages
Environment
node 22.23.2
Created
2026-08-21T09:56:31Z

Contract

  1. JestChaiExpect plugin integrates Jest-compatible expect matchers into Chai
  2. JestAsymmetricMatchers provides asymmetric matchers like any, stringContaining, arrayContaining, objectContaining, and anything
  3. Asymmetric matcher classes (StringContaining, Any, Anything, ArrayContaining, ObjectContaining, StringMatching) evaluate matching correctly
  4. Standalone utility functions (equals, subsetEquality, iterableEquality) verify structural and subset equality
  5. getState and setState inspect and update matcher state
  6. expect.extend registers custom matchers

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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