Sample

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

sha256:5c156867bf0f023c8d4d0f43515be8036ba6039d20f4ae72defb353b9829bce0

MIT-0

Execution evidence

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

Declared environment linux 24 · ubuntu · glibc 2.39 x64 npm wsl

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

HOW

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

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

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