Sample
verify pkg:npm/yaml@2.9.0
sha256:448d79132d7989fd2bd7b2751194bf55173e6a02a12ccb92b2efdb911b59b37c
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
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
- verify pkg:npm/yaml@2.9.0
- Packages
- Symbols
-
- yaml.parse
- yaml.stringify
- yaml.parseAllDocuments
- yaml.parseDocument
- yaml.LineCounter
- yaml.Document
- Created
- 2026-08-19T01:54:27Z
Contract
- assert yaml.parse parses YAML mappings, sequences, primitive types, and multi-line literal and folded scalar strings into native JavaScript structures
- assert yaml.parse supports options including intAsBigInt for arbitrary-precision integers and reviver transformation functions
- assert yaml.stringify serializes JavaScript objects to YAML with customizable indentation, quote styling, and replacer filtering
- assert yaml.parseAllDocuments parses multi-document YAML streams separated by directives and document delimiters into Document AST instances
- assert yaml.parseDocument and Document AST support inspecting, updating, and deleting nodes and serializing back to YAML
- assert yaml.LineCounter tracks line and column coordinates for byte offsets in parsed YAML documents
- assert yaml.parse resolves YAML anchors and merge keys into merged JavaScript objects
- assert yaml.parse throws YAMLParseError on invalid YAML syntax
Files
- PROMPT.md
- csx.json
- index.mjs
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous