Sample
verify pkg:npm/check-error@2.1.3
sha256:37024a968a9de8597cd640b1e4aa05ae29a9fdef2d5c8e4b8f9cd2f9acdba8ee
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/check-error@2.1.3
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-20T23:07:10Z
Contract
- compatibleInstance returns true when thrown error strictly equals errorLike instance and false otherwise
- compatibleConstructor matches errors by constructor function or instance inheritance
- compatibleMessage verifies error messages using string substring or regular expression matching
- getMessage extracts message string from Error instances or string values
- getConstructorName retrieves the constructor name from error instances and constructor functions
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous