CodeSampleX

Sample

diff two sequences and report common subsequences

sha256:5213aa691d0979a5c2b7aef3ba44d3263d8f8068d5ab05aa073e742365f8e1da

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-27

Case

HOW
Goal
diff two sequences and report common subsequences
Packages
Symbols
  • default
Environment
node 22.23.2
Created
2026-08-27T18:51:02Z

Contract

  1. assert diffSequences finds common subsequences between two sequences
  2. assert diffSequences handles identical sequences reporting single full subsequence
  3. assert diffSequences handles completely disjoint sequences reporting no subsequences
  4. assert diffSequences handles empty sequences gracefully without errors
  5. assert diffSequences supports custom equality comparator function
  6. assert diffSequences throws TypeError when lengths are not numbers or callbacks are not functions
  7. assert diffSequences throws RangeError for negative lengths or non-safe integers
  8. assert diffSequences interop export is a callable function

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous