CodeSampleX

Sample

http-errors 2.0.0: createError

Verified sample for npm http-errors 2.0.0: createError. The contract ran on node 22 · linux alpine/x64 · docker and passed: assert createError creates 4xx…

sha256:c734337956cda8234887d3eb56b4bc560e060b46d7f564e3111db69ce3d10fd1

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
2
Signing keys that built it
1
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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-30
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-30

Case

HOW
Goal
verify createError in pkg:npm/http-errors@2.0.0
Packages
Symbols
  • createError
Environment
node 22.23.2
Created
2026-08-30T09:48:55Z

Contract

  1. assert createError creates 4xx HttpError with status, statusCode, name, and expose true by default
  2. assert createError creates 5xx HttpError with expose false by default
  3. assert createError attaches custom properties and respects custom expose override
  4. assert createError wraps existing Error preserving original message and assigning status
  5. assert named error constructors create corresponding HttpError instances
  6. assert isHttpError identifies HttpError instances and rejects standard Errors or non-errors

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous