CodeSampleX

Sample

verify pkg:npm/jest-util@30.4.1

sha256:16e7d59c30d0c7531844705dd6e2401a87e34dd33f8d11429671420a74c09d2b

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 linux 24 · ubuntu · glibc 2.39 x64 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@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Case

HOW
Goal
verify pkg:npm/jest-util@30.4.1
Packages
Created
2026-08-27T22:34:24Z

Contract

  1. pluralize formats singular and plural counts with given words
  2. formatTime formats millisecond and microsecond durations with metric prefix units and padding
  3. replacePathSepForGlob normalizes Windows backslash path separators to POSIX forward slashes
  4. globsToMatcher converts an array of glob strings into a matching function
  5. isPromise distinguishes Promises and thenables from non-promise values
  6. isNonNullable identifies non-null and non-undefined values
  7. isError distinguishes Error instances and subclasses from other types
  8. deepCyclicCopy creates a deep copy of complex objects preserving circular and nested references
  9. ErrorWithStack constructs an Error instance capturing stack trace at the specified callsite
  10. convertDescriptorToString stringifies named functions, classes, and primitives while rejecting unsupported objects
  11. interopRequireDefault normalizes CommonJS and ES module default exports
  12. invariant asserts truthy conditions and throws Error with given message on falsy conditions
  13. specialChars provides terminal formatting escape sequences and status icons
  14. tryRealpath resolves existing filesystem path or falls back to original path

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

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