CodeSampleX

Sample

parse and stringify YAML documents with YAML.parse and YAML.stringify

sha256:9e40cf01db14673c9ddaa15b1080317d8f18506baa467d77fd19e927e583f388

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 windows 11 x64 npm

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 and stringify YAML documents with YAML.parse and YAML.stringify
Packages
Symbols
  • parse
Created
2026-08-19T02:00:46Z

Contract

  1. parse parses YAML strings with mappings and sequences into JavaScript objects
  2. stringify serializes a JavaScript data structure to a valid YAML formatted string
  3. parse reviver function transforms values during parsing
  4. stringify replacer function filters and modifies properties during stringification
  5. parse throws a YAMLParseError when encountering malformed YAML input

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