CodeSampleX

Sample

verify pkg:npm/eventsource-parser@3.1.0

sha256:c98e6335b9234b2e78474f198ed43021761c1f7ac2c8af9088827dd6247c1128

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
2026-08-21

Case

HOW
Goal
verify pkg:npm/eventsource-parser@3.1.0
Packages
Created
2026-08-21T07:29:21Z

Contract

  1. assert createParser parses single-line and multiline data fields into EventSourceMessage objects when fed chunks
  2. assert createParser extracts optional id and event type fields along with message data
  3. assert createParser invokes onRetry callback when parsing retry interval directives and onComment for comment lines
  4. assert createParser emits ParseError with invalid-retry or unknown-field types when encountering malformed SSE fields
  5. assert createParser enforces maxBufferSize limit by emitting ParseError with max-buffer-size-exceeded and terminating feed
  6. assert EventSourceParserStream transforms a stream of chunked strings into a stream of EventSourceMessage events

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous