CodeSampleX

Sample

verify pkg:npm/vary@1.1.2

sha256:096d8391342654f71e83728e3b26eb9f1d537f215ae90f4372f781e75a2ee6d6

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

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@1
2026-08-20

Case

HOW
Goal
verify pkg:npm/vary@1.1.2
Packages
Created
2026-08-20T14:08:03Z

Contract

  1. vary(res, field) sets the Vary header on response object
  2. vary(res, field) appends field to existing Vary header without duplicating
  3. vary(res, field) accepts an array of header field names
  4. vary(res, field) sets Vary header to * when field is *
  5. vary.append(header, field) returns updated header string without modifying existing headers
  6. vary.append(header, field) returns * if header or field contains *
  7. vary.append(header, field) throws TypeError when header or field argument is invalid
  8. vary(res, field) throws TypeError when res argument is invalid or missing methods

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous