CodeSampleX

Sample

verify pkg:npm/fs-extra@8.1.0

sha256:6b36cf76f1454bdf9103fe652c75aa9f7527cbf7178b3013f63636fe0a0fb971

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 22.23 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 ed25519:2175b912ea1c23b1 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
2026-08-20T01:31:22Z

Contract

  1. ensureDir creates nested directory structures if they do not exist
  2. ensureFile creates empty files and parent directories if they do not exist and preserves existing content
  3. outputFile writes string data creating parent directories automatically
  4. outputJson writes formatted JSON objects creating parent directories automatically
  5. readJson parses JSON files safely and returns null on syntax error when throws option is false
  6. writeJson serializes objects with custom indentation spaces
  7. copy recursively copies directory hierarchies with filter support
  8. emptyDir removes all nested files and subdirectories while retaining the directory itself
  9. pathExists asynchronously checks whether files and directories exist
  10. move relocates files across paths with overwrite support
  11. remove recursively deletes 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