CodeSampleX

Sample

Parse YAML string into a JavaScript object and serialize back with stringify

sha256:d5a105d8a82c39c325f73d9fdcb5507985fbeb5460444b87313eb02ad4d5f918

Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures. Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments. MIT-0

Execution evidence

Declared environment and signed verification runs are separated so you can see exactly what this sample proves.

Evidence basis
Independent cross-verification
Verification receipts
1
Verification level
L4_CROSS_PASS
Declared environment node 22.23 windows 11 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-19

Case

HOW
Goal
Parse YAML string into a JavaScript object and serialize back with stringify
Packages
Symbols
  • parse
  • stringify
Environment
node 22.23.2
Created
2026-08-19T09:26:30Z

Contract

  1. parse parses YAML mapping, sequence, and primitive scalar structures into JavaScript objects and values
  2. stringify serializes JavaScript objects and arrays into YAML formatted strings
  3. parse reviver function transforms parsed values during document parsing
  4. stringify replacer function filters or transforms values during serialization
  5. parse throws a YAMLParseError when parsing invalid YAML syntax

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous