Sample
verify pkg:npm/yaml@2.9.0
sha256:dc4594e05e6da9b294eb7078b90bd980f6f2482b2c2fd19e450bd11ef511c129
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
- Created
- 2026-08-19T09:11:13Z
Contract
- assert YAML.visitAsync traverses AST nodes asynchronously and awaits async scalar transformer functions
- assert YAML.visitAsync removes nodes asynchronously from maps and sequences when returning visit.REMOVE
- assert YAML.visitAsync skips subtree traversal when returning visit.SKIP and terminates traversal early when returning visit.BREAK
- assert YAML.Parser and YAML.Composer streamingly parse and compose CST tokens into Document AST instances
- assert Document.prototype.createNode constructs AST Scalar, YAMLMap, and YAMLSeq nodes and type guards isNode, isScalar, isMap, isSeq, isPair, and isAlias correctly identify AST node types
- assert Document AST supports attaching comments and explicit scalar styles that serialize cleanly to YAML strings
Files
- PROMPT.md
- csx.json
- index.mjs
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous