CodeSampleX

Sample

parse and stringify JSON5 with comments, trailing commas, and unquoted keys

sha256:4949633e688b8f55c8bdaa12c397674de82d9b348bbf88143c80b899382e84a9

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
parse and stringify JSON5 with comments, trailing commas, and unquoted keys
Packages
Symbols
  • JSON5.parse
  • JSON5.stringify
Environment
node 22.23.2
Created
2026-08-26T06:53:09Z

Contract

  1. JSON5.parse parses objects with unquoted keys, single-quoted keys, and trailing commas
  2. JSON5.parse ignores single-line and multi-line comments
  3. JSON5.parse parses hexadecimal numbers, leading/trailing decimals, explicit plus signs, Infinity, and NaN
  4. JSON5.parse supports single-quoted strings with line continuations and escape sequences
  5. JSON5.parse accepts an optional reviver function to transform parsed key-value pairs
  6. JSON5.stringify serializes objects with unquoted identifier keys and configurable quote formatting
  7. JSON5.stringify preserves Infinity, -Infinity, and NaN as identifiers rather than null
  8. JSON5.stringify accepts a replacer function or array and custom space indentation
  9. JSON5.parse throws SyntaxError on invalid JSON5 input syntax

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous