CodeSampleX

Sample

Coerce unstructured strings into valid semantic versions using semver.coerce

sha256:efa1db2507094c828da1481cab2cb3c4c72ea9835ef3a191a1a16e18aa19681b

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
Coerce unstructured strings into valid semantic versions using semver.coerce
Packages
Symbols
  • coerce
Environment
node 22.22.2
Created
2026-08-19T10:38:31Z

Contract

  1. assert semver.coerce parses partial version strings into valid SemVer objects with zero-padded components
  2. assert semver.coerce extracts semantic versions embedded within surrounding text or prefixes
  3. assert semver.coerce parses from right to left when the rtl option is true
  4. assert semver.coerce preserves prerelease tags when includePrerelease is enabled and ignores them by default
  5. assert semver.coerce returns null for input containing no parseable version numbers

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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