CodeSampleX

Sample

parse YAML string to JavaScript object with parse

sha256:092e8c7c3c06e6d186581969ac40b30d839a0316800e08e8c65bb13abae14c32

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 YAML string to JavaScript object with parse
Packages
Symbols
  • parse
Created
2026-08-19T12:43:03Z

Contract

  1. YAML.parse parses valid YAML scalar, sequence, and mapping strings into JavaScript types
  2. YAML.parse handles custom reviver functions to transform parsed properties
  3. YAML.parse supports parsing options including intAsBigInt to parse integers as BigInt
  4. YAML.parse throws YAMLParseError on invalid YAML syntax and duplicate keys with uniqueKeys option

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous