CodeSampleX

Exemple

cacache 19.0.1

Échantillon vérifié pour npm cacache 19.0.1. Le contrat s'est exécuté sur node 22 · linux debian/x64 · docker et a réussi : cacache.put stores data under a…

sha256:852474865e2c4e4fecf52647938d522366924d463e14122b7d11834c9c4f56dc

Ce réseau offre une seule chose : un échantillon qui compile. Il l'a exécuté dans un bac à sable et conservé le reçu signé. Il ne note rien et ne garantit rien : si le même code compile chez vous, il ne l'a pas mesuré. Combien de clés de signature distinctes ont déposé un reçu de contrat réussi. Une seule, c'est l'auteur ; plus d'une signifie que quelqu'un d'autre l'a compilé aussi. Une clé est auto-générée sans identité enregistrée derrière, donc on compte des clés, pas des personnes. MIT-0

Preuves d'exécution

L'environnement déclaré et les exécutions signées sont séparés, pour que vous voyiez exactement ce que cet échantillon a exécuté et où.

Base de preuve
Contrat signé réussi
Reçus de vérification
1
Clés de signature qui l’ont compilé
1
Environnement déclaré linux 24 · ubuntu · glibc 2.39 x64 npm

Environnements des exécutions de vérification

Environnement Contrat Étapes Exécution
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-10-17

Cas

HOW
Objectif
verify pkg:npm/cacache@19.0.1
Paquets
Créé
2026-10-17T12:06:49Z

Contrat

  1. cacache.put stores data under a key with metadata and returns an sha512 integrity string
  2. cacache.get and cacache.get.byDigest read back the exact stored Buffer payload and metadata
  3. cacache.ls lists active index entries and cacache.verify checks content integrity and records lastRun
  4. cacache.rm.entry and cacache.rm.content remove the index entry and content blob from the cache

Fichiers

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

Télécharger l’artefact source (tar.gz)

Code source

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:npm/cacache@19.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/cacache@19.0.1

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:0013abca24b5c55a3ea87d128dcdab6c4fa7dc8e6a726f8aa5548a5d6c92ecd4","contract":["cacache.put stores data under a key with metadata and returns an sha512 integrity string","cacache.get and cacache.get.byDigest read back the exact stored Buffer payload and metadata","cacache.ls lists active index entries and cacache.verify checks content integrity and records lastRun","cacache.rm.entry and cacache.rm.content remove the index entry and content blob from the cache"],"goal":"verify pkg:npm/cacache@19.0.1","kind":"HOW","packages":["pkg:npm/cacache@19.0.1"],"schemaVersion":1},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/cacache@19.0.1"],"schemaVersion":1,"subject":"pkg:npm/cacache@19.0.1","verifierAdapter":"node-typescript@1"}
package-lock.json
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  "name": "cacache-sample",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
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      "license": "ISC",
      "dependencies": {
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        "string-width-cjs": "npm:string-width@^4.2.0",
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package.json
{
  "name": "cacache-sample",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "cacache": "19.0.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/cacache@19.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/cacache@19.0.1"
  ]
}
src/index.mjs
import cacache from 'cacache';

export async function runCacheLifecycle(cacheDir) {
  const key = 'greeting-entry';
  const payload = Buffer.from('hello content-addressable cache', 'utf8');
  const metadata = { contentType: 'text/plain', tag: 'v1' };

  const integrity = await cacache.put(cacheDir, key, payload, { metadata });

  const retrieved = await cacache.get(cacheDir, key);
  const byDigest = await cacache.get.byDigest(cacheDir, integrity);
  const info = await cacache.get.info(cacheDir, key);
  const listing = await cacache.ls(cacheDir);

  const verifyStats = await cacache.verify(cacheDir);
  const lastVerified = await cacache.verify.lastRun(cacheDir);

  await cacache.rm.entry(cacheDir, key);
  const infoAfterEntryRm = await cacache.get.info(cacheDir, key);

  await cacache.rm.content(cacheDir, integrity);
  const hasContentAfterRm = await cacache.get.hasContent(cacheDir, integrity);

  return {
    integrity: String(integrity),
    retrievedText: retrieved.data.toString('utf8'),
    retrievedSize: retrieved.size,
    retrievedMetadata: retrieved.metadata,
    byDigestText: byDigest.toString('utf8'),
    infoKey: info.key,
    listedKeys: Object.keys(listing),
    verifiedContent: verifyStats.verifiedContent,
    totalEntries: verifyStats.totalEntries,
    lastVerifiedIsDate: lastVerified instanceof Date && !Number.isNaN(lastVerified.getTime()),
    infoAfterEntryRm,
    hasContentAfterRm
  };
}
test/contract.mjs
import assert from 'node:assert/strict';
import { rm } from 'node:fs/promises';
import { runCacheLifecycle } from '../src/index.mjs';

const cacheDir = './.cache-test-store';

await rm(cacheDir, { recursive: true, force: true });
try {
  const result = await runCacheLifecycle(cacheDir);

  assert.equal( result.integrity.startsWith('sha512-'), true );
  assert.equal( result.retrievedText, 'hello content-addressable cache' );
  assert.equal( result.retrievedSize, 31 );
  assert.deepEqual( result.retrievedMetadata, { contentType: 'text/plain', tag: 'v1' } );
  assert.equal( result.byDigestText, 'hello content-addressable cache' );
  assert.equal( result.infoKey, 'greeting-entry' );
  assert.deepEqual( result.listedKeys, ['greeting-entry'] );
  assert.equal( result.verifiedContent, 1 );
  assert.equal( result.totalEntries, 1 );
  assert.equal( result.lastVerifiedIsDate, true );
  assert.equal( result.infoAfterEntryRm, null );
  assert.equal( result.hasContentAfterRm, false );
} finally {
  await rm(cacheDir, { recursive: true, force: true });
}

Seeder d'origine

anonyme