CodeSampleX

Sample

verify pkg:npm/content-disposition@1.1.0

sha256:fe5f0be105fbb6f03f48949808435e4caf01fc516ec4a56c59e9e5b3eec8bf1d

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/content-disposition@1.1.0
Packages
Environment
node 22.23.2
Created
2026-08-20T13:39:33Z

Contract

  1. contentDisposition() generates attachment disposition without parameters when called with no arguments
  2. contentDisposition(filename) formats attachment disposition header with quoted basename
  3. contentDisposition(filename, { type }) supports custom disposition types including inline
  4. contentDisposition(filename) generates ISO-8859-1 fallback filename and RFC 5987 UTF-8 encoded filename* parameter for Unicode filenames
  5. contentDisposition(filename, { fallback }) supports custom fallback filename string and boolean false to omit fallback
  6. contentDisposition.parse(header) parses disposition header string into type and parameters map
  7. contentDisposition.parse(header) decodes RFC 5987 extended UTF-8 parameters into standard parameter keys
  8. contentDisposition.parse(header) throws TypeError on invalid arguments or malformed header syntax

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.js
  • test/contract.cjs

Download the source artifact (tar.gz)

Origin Seeder

anonymous