CodeSampleX

Sample

verify pkg:npm/%40vitest/expect@4.1.11

sha256:21e2f381fd2647c4f4db6be94fa0443a7081440ea6623f6946e31031d388aaf6

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…
2026-08-28

Case

HOW
Goal
verify pkg:npm/%40vitest/expect@4.1.11
Packages
Environment
node 22.23.2
Created
2026-08-28T06:20:52Z

Contract

  1. expect performs strict primitive equality, boolean/nullish checks, and .not negation
  2. toEqual and toStrictEqual perform deep structural equality assertions on objects and arrays
  3. toMatchObject and toHaveProperty verify subset structures and nested object properties
  4. toContain and toContainEqual assert collection containment and element equality
  5. toBeGreaterThan, toBeLessThan, and toBeCloseTo validate numeric relationships and floating point values
  6. toBeTypeOf and toBeInstanceOf evaluate type classifications and instance constructors
  7. toSatisfy and toBeOneOf custom matchers evaluate predicate functions and element membership
  8. toThrow verifies exception throwing and error type matching
  9. Asymmetric matchers stringContaining, stringMatching, objectContaining, arrayContaining, any, anything, and closeTo match partial values
  10. SchemaMatching and expect.schemaMatching validate data against Standard Schema V1 definitions
  11. expect.extend registers custom matchers with custom pass and failure message logic
  12. getState and setState inspect and update matcher execution context

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous