CodeSampleX

Sample

verify pkg:npm/atomic-sleep@1.0.0

sha256:1d7acdbf2e434986fcfae92e8837f25e47fc815d7567b95f61ff2d239d5543fc

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

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/atomic-sleep@1.0.0
Packages
Environment
node 22.23.2
Created
2026-08-20T21:42:35Z

Contract

  1. sleep is exported as a function
  2. sleep synchronously pauses execution for positive integer milliseconds
  3. sleep supports BigInt durations
  4. sleep blocks the event loop so pending asynchronous timers do not run until after sleep returns
  5. sleep throws TypeError for non-numeric and non-bigint arguments
  6. sleep throws RangeError for non-positive or non-finite numbers

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous