CodeSampleX

Sample

verify pkg:npm/fs-extra@8.1.0

sha256:318c6030614d69641faa70a5b94818fc1122cd482222293e74ab839beaa39f82

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@8.1.0
Packages
Environment
node 22.23.2
Created
2026-08-20T01:28:36Z

Contract

  1. ensureDir creates nested directory structures if they do not exist
  2. outputFile and readFile write and read text files while automatically creating parent directories
  3. outputJson and readJson write and read JSON documents while automatically creating parent directories
  4. copy recursively copies directory hierarchies and supports custom filter functions
  5. emptyDir deletes all contents within a directory while leaving the directory itself intact
  6. pathExists accurately checks the existence of files and directories
  7. move moves files and directories across paths and supports overwrite option
  8. remove recursively removes directories and files without throwing if the target does not exist

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