CodeSampleX

Sample

verify pkg:npm/json-parse-even-better-errors@2.3.1

sha256:13cc647301f0b6bab852b369100118cb2495893133679118130becc034786755

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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-23

Case

HOW
Goal
verify pkg:npm/json-parse-even-better-errors@2.3.1
Packages
Created
2026-08-23T15:24:46Z

Contract

  1. parseJson parses valid JSON and strips leading byte order mark
  2. parseJson attaches detected newline and indentation symbols to parsed objects
  3. parseJson applies optional reviver function to transform parsed values
  4. parseJson throws JSONParseError with code EJSONPARSE and context on invalid JSON
  5. parseJson throws TypeError with code EJSONPARSE when non-string input fails parsing
  6. parseJson.noExceptions returns undefined without throwing when JSON is invalid

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous