CodeSampleX

Sample

finalhandler 2.1.1

Verified sample for npm finalhandler 2.1.1. The contract ran on node 22 · linux alpine/x64 · docker and passed: finalhandler(req, res) produces a 404 Not…

sha256:f8bca77bc5c4ae0e07686a52bfada7bfd59bbc35593effd0fc692649058b72ab

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 linux 24 · ubuntu · glibc 2.39 x64 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/finalhandler@2.1.1
Packages
Created
2026-08-20T13:49:41Z

Contract

  1. finalhandler(req, res) produces a 404 Not Found response when called without an error for unhandled requests
  2. finalhandler(req, res) produces a 500 or error status response matching err.status/err.statusCode when called with an error
  3. finalhandler(req, res, { onerror }) invokes the onerror callback with the error and request/response objects
  4. finalhandler(req, res, { env: 'production' }) omits error details and stack trace in the response body in production mode
  5. finalhandler(req, res) terminates or destroys socket connection if response headers have already been sent when an error occurs

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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