CodeSampleX

Sample

route request handling and middleware execution with router

sha256:a19be5e6db2fcb670d2c1985818ef3dad0d5f96728e7dd6d93349930201eccd7

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

Execution context
node 22
Operating system
linux
Architecture
x64
Runtime
node 22
Language
javascript
Package manager
npm 10

Verification-run environments

node 22 · linux alpine/x64 · docker PASS
Execution context
node 22
Operating system
linux alpine · musl
Architecture
x64
Runtime
node 22
Language
javascript
Package manager
npm
Execution
container · docker

CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-19

Case

HOW
Goal
route request handling and middleware execution with router
Packages
Symbols
  • Router
Environment
node 22
Created
2026-08-18T18:23:07Z

Contract

  1. Router returns a callable dispatch function inheriting from Router prototype
  2. router.use mounts general and path-prefixed middleware executing in registration order
  3. router.get and router.post dispatch to method-specific route handlers matching the URL path
  4. router.route creates chainable HTTP verb handlers on a single path
  5. router.param captures and validates route placeholders before route execution
  6. router handles unmatched routes by delegating to the done callback
  7. router error-handling middleware catches errors propagated via next(err)
  8. sub-routers can be nested using router.use for modular routing

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous

Verification receipts

  • node 22 · linux alpine/x64 · docker PASS
    CONTAINER_RUN compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS node-typescript@1
    ed25519:2175b912ea1c23b1