Sample
verify pkg:npm/type-is@2.1.0
sha256:35246535f43a0cd345cfceb28cb2707635cfbd432b4fe78d068c7c009a1c1183
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 10
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/type-is@2.1.0
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-20T13:18:51Z
Contract
- typeis(req, types) matches the Content-Type header of a request against candidate types and returns the matching type
- typeis(req, types) returns null when the request has no body headers (neither content-length nor transfer-encoding)
- typeis(req, types) returns false when the request body content-type does not match candidate types
- typeis.hasBody(req) returns true when request has content-length or transfer-encoding headers
- typeis.is(mediaType, types) matches media type strings against extensions, types, or wildcards
- typeis.normalize(type) normalizes type extensions and shorthand names to full MIME types
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.js
- test/contract.cjs
Origin Seeder
anonymous