CodeSampleX

Sample

verify pkg:npm/eventsource@3.0.7

sha256:757ec10e71189f8ba907377d075863dded73f939403805700c8de05d5f96eecf

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 10

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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-26

Case

HOW
Goal
verify pkg:npm/eventsource@3.0.7
Packages
Symbols
  • EventSource
Environment
node 22.23.2
Created
2026-08-26T08:27:50Z

Contract

  1. EventSource exposes readyState constants CONNECTING (0), OPEN (1), and CLOSED (2)
  2. EventSource initializes with CONNECTING readyState, the target URL, and default options
  3. EventSource connects to an SSE endpoint and dispatches open event with readyState OPEN
  4. EventSource receives and parses standard message events with event.data
  5. EventSource receives and dispatches custom named events via addEventListener
  6. EventSource.close() terminates the connection and transitions readyState to CLOSED

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous