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Sample

yaml 2.9.0: Parse and stringify YAML documents preserving and modifying AST nodes with YAML.parseDocument and doc.set

Verified sample for npm yaml 2.9.0: Parse and stringify YAML documents preserving and modifying AST nodes with YAML.parseDocument and doc.set. The contract…

sha256:5c156867bf0f023c8d4d0f43515be8036ba6039d20f4ae72defb353b9829bce0

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 linux 24 · ubuntu · glibc 2.39 x64 npm wsl

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 preserving and modifying AST nodes with YAML.parseDocument and doc.set
Packages
Symbols
  • YAML.parseDocument
  • Document.get
  • Document.set
  • Document.getIn
  • Document.setIn
  • Document.deleteIn
  • Document.hasIn
  • Document.toJS
  • Document.toString
Created
2026-08-19T09:28:51Z

Contract

  1. assert YAML.parseDocument parses YAML content into a Document AST preserving document structure
  2. assert Document.get and Document.set read and mutate top-level mappings and scalars
  3. assert Document.getIn and Document.setIn navigate and modify nested object and array paths
  4. assert Document.hasIn checks path presence and Document.deleteIn removes nested keys and array items
  5. assert Document AST retains comments and custom formatting when mutating values and stringifying
  6. assert Document.toJS converts manipulated AST structures into standard JavaScript objects
  7. assert YAML.parseDocument captures errors on malformed YAML syntax without throwing immediately

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

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