CodeSampleX

Sample

universalify 2.0.1: fromCallback

Verified sample for npm universalify 2.0.1: fromCallback. The contract ran on node 22 · linux alpine/x64 · docker and passed: universalify.fromCallback wraps…

sha256:42272e1ca865a06941dda563291672586129c897d9a34400826030495c5eca38

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
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 universalify.fromCallback in pkg:npm/universalify@2.0.1
Packages
Symbols
  • universalify.fromCallback
Environment
node 22.23.2
Created
2026-08-20T23:24:23Z

Contract

  1. universalify.fromCallback wraps a callback-style function to return a Promise when no callback argument is provided
  2. universalify.fromCallback wraps a callback-style function to invoke the callback when a callback argument is provided
  3. universalify.fromCallback rejects the returned Promise when the underlying callback returns an error
  4. universalify.fromCallback delivers the error to the callback when a callback argument is provided

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

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