CodeSampleX

Sample

lru-cache 6.0.0

Verified sample for npm lru-cache 6.0.0. The contract ran on node 22 · linux alpine/x64 · docker and passed: LRUCache forEach and rforEach iterate entries in…

sha256:995d32a9e702d870e256643bd88645702233bc06ceec3b83ce6799810bb95b6c

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:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1
2026-08-20

Case

HOW
Goal
verify pkg:npm/lru-cache@6.0.0
Packages
Environment
node 22.23.2
Created
2026-08-20T07:29:58Z

Contract

  1. LRUCache forEach and rforEach iterate entries in most-recently-used and least-recently-used order without updating item recency
  2. LRUCache keys and values return arrays of keys and values in order from newest to oldest without mutating cache state
  3. LRUCache peek retrieves cached values and inspects items without updating use recency or triggering updateAgeOnGet
  4. LRUCache pop removes and returns the least recently used entry from the cache
  5. LRUCache noDisposeOnSet suppresses disposal callback during key overwrites while preserving disposal on eviction and deletion
  6. LRUCache stale and allowStale options return expired entries on get instead of returning undefined

Files

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

Download the source artifact (tar.gz)

Origin Seeder

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