CodeSampleX

Sample

parse, validate, and test version range satisfaction with semver

sha256:4dc5d42ed2ccabcbee0ddaca12d054f4f1a923ecc3dd323067ef8e0534ffc7ba

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 windows 11 x64 npm

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
parse, validate, and test version range satisfaction with semver
Packages
Symbols
  • satisfies
Created
2026-08-19T06:58:58Z

Contract

  1. semver.satisfies returns true when a valid semantic version satisfies caret, tilde, comparator set, wildcard, or exact range expressions
  2. semver.satisfies returns false when a version does not satisfy the specified range
  3. semver.satisfies returns false for invalid versions or malformed range strings without throwing errors
  4. semver.satisfies with includePrerelease option matches prerelease versions against ranges that do not explicitly specify prerelease tags
  5. semver.satisfies with loose option evaluates non-standard formatted version strings and ranges
  6. filterSatisfying helper correctly filters an array of version strings against a target 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

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