CodeSampleX

Sample

verify pkg:npm/semver@7.8.5

sha256:89917a7f93ebf5bbacef5b556f688e3bdfd63c9f777e3b12c8d63af69facd6e4

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 linux 24 · ubuntu · glibc 2.39 x64 npm 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
  • semver.cmp
  • semver.toComparators
Created
2026-08-19T09:14:12Z

Contract

  1. assert semver.cmp evaluates relational operators between versions including greater than, less than, and equality
  2. assert semver.cmp distinguishes strict identity === and !== with build metadata from semantic equivalence == and !=
  3. assert semver.cmp throws a TypeError when given an invalid comparison operator
  4. assert semver.toComparators parses hyphen ranges and caret ranges into disjunctive normal form comparator sets
  5. assert semver.toComparators expands multiple range alternatives into separate comparator arrays
  6. assert semver.toComparators throws a TypeError when provided an invalid range string

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous