CodeSampleX

Sample

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

sha256:321bab7a077194d29e97b67c21b593a9a5ac6ad814791d866a1550b083fd765d

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 json-parse-even-better-errors in pkg:npm/json-parse-even-better-errors@2.3.1
Packages
Symbols
  • json-parse-even-better-errors
Environment
node 22.23.2
Created
2026-08-26T01:01:39Z

Contract

  1. parseJson parses valid JSON text into JavaScript values
  2. parseJson transforms parsed values when given a custom reviver function
  3. parseJson strips leading UTF-8 byte-order mark before parsing
  4. parseJson attaches indentation and newline metadata symbols to objects and arrays
  5. parseJson throws JSONParseError subclassing SyntaxError on invalid JSON
  6. parseJson formats error message with context snippet when parsing truncated JSON
  7. parseJson.noExceptions returns undefined for invalid JSON and parsed value for valid JSON
  8. parseJson throws TypeError with code EJSONPARSE for non-string non-buffer input that cannot be parsed

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous