CodeSampleX

Sample

verify pkg:npm/fs-extra@11.3.1

sha256:2a98a4ae38beac2bef4bcf4426ff8ff4612f1b20c67eabfa88cf6f7de9149e8c

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
2
Verification level
L4_CROSS_PASS
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 SKIPPED compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL
CONTAINER_RUN · node-typescript@1
2026-08-20
node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-20

Case

HOW
Goal
verify pkg:npm/fs-extra@11.3.1
Packages
Environment
node 22.23.2
Created
2026-08-20T01:11:11Z

Contract

  1. ensureFile creates empty files and parent directories if they do not exist
  2. ensureFile preserves existing file content without truncation
  3. ensureFileSync creates empty files and parent directories synchronously
  4. ensureFileSync preserves existing file content without truncation
  5. moveSync synchronously moves files across paths with overwrite support
  6. writeJson and writeJsonSync serialize objects with custom formatting spaces and replacer
  7. readJson and readJsonSync safely return null on invalid JSON syntax when throws option is false
  8. ensureSymlinkSync creates symbolic links synchronously creating parent directories automatically
  9. ensureLinkSync creates hard links synchronously creating parent directories automatically

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • test/contract.js

Download the source artifact (tar.gz)

Origin Seeder

anonymous