Sample
verify pkg:npm/levn@0.4.1
sha256:5ec5cf30077b7cbb8e4ada47ee5c099bd60caf25e53e72ab3690571db6cadec8
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 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-20 |
Case
HOW- Goal
- verify pkg:npm/levn@0.4.1
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-20T22:03:18Z
Contract
- levn.parse parses primitive types including Number, String, Boolean, Undefined, Null, and NaN from string notation
- levn.parse parses composite types including arrays, tuples, and objects with nested type specifications
- levn.parse parses special types including Date literals and RegExp patterns with optional delimiters and flags
- levn.parse parses union types by attempting candidate type conversions in left-to-right precedence order
- levn.parse supports explicit mode using wildcard type or explicit option to require unambiguous literal syntax
- levn.parse supports custom type definitions with custom typeOf, validate, and cast functions
- levn.parsedTypeParse parses input string values using a pre-parsed type structure from type-check
- levn.VERSION exposes the package version string
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.mjs
Origin Seeder
anonymous