Sample
verify pkg:npm/yaml@2.9.0
sha256:b9d783f49f8901000389a37466a06ac066f44aee6623038b976f55f409894f76
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
node 22.22 linux 24 · ubuntu · glibc 2.39 x64 node 22.22 javascript npm 11 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
- Environment
- node 22.22.2
- Created
- 2026-08-19T08:29:10Z
Contract
- assert yaml.parse parses standard YAML mapping and sequence structures into native JavaScript objects and arrays
- assert yaml.stringify serializes JavaScript objects into formatted YAML strings with configurable indentation
- assert yaml.parseAllDocuments parses multi-document YAML streams separated by triple hyphens into an array of Document ASTs
- assert yaml.LineCounter tracks line and column coordinates for byte offsets across source YAML content
- assert yaml.Document constructs a Document AST from JavaScript values and serializes to YAML via toString
- assert yaml.parse resolves YAML anchor and alias references into shared object references
- assert yaml.parse throws YAMLParseError on malformed YAML syntax
- assert yaml.parse with customTags parses user-defined YAML tags into custom JavaScript representations
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous