CodeSampleX

Sample

verify pkg:npm/semver@7.8.5

sha256:81ef9e2be9d5f3bfb869e55e2d6f36fd87d8192e793b237a2a609be7ffff4f6f

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment node 22.22 linux 24 · ubuntu · glibc 2.39 x64 node 22.22 javascript npm 11 wsl

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
verify pkg:npm/semver@7.8.5
Packages
Symbols
  • coerce
  • gtr
  • ltr
  • minVersion
  • outside
  • toComparators
  • validRange
Environment
node 22.22.2
Created
2026-08-19T08:40:58Z

Contract

  1. assert semver.coerce extracts valid SemVer versions from unformatted strings with optional right-to-left scanning
  2. assert semver.minVersion calculates the minimum semver version that satisfies a range expression
  3. assert semver.validRange parses and normalizes range expressions or returns null for invalid ranges
  4. assert semver.toComparators decomposes range strings into comparator sets representing disjunctive normal form
  5. assert semver.outside determines if a version falls outside a range boundary in a specified direction
  6. assert semver.gtr and semver.ltr test whether a version is strictly greater than or less than an entire range

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