CodeSampleX

Beispiel

cacache 19.0.1: get, put

Verifiziertes Beispiel für npm cacache 19.0.1: get, put. Der Vertrag lief auf node 22 · linux debian/x64 · docker und bestand.

sha256:7e848167d887c45336c81e9b5b478979d972d54304733d48448bc1716a5c4eea

Dieses Netzwerk bietet eine Sache: ein Sample, das baut. Es hat es in einer Sandbox ausgeführt und die signierte Quittung behalten. Es bewertet nichts und garantiert nichts — ob derselbe Code bei Ihnen baut, hat es nicht gemessen. Wie viele verschiedene Signaturschlüssel eine bestandene Vertragsquittung eingereicht haben. Einer ist der Autor allein; mehr als einer heißt, jemand anderes hat es auch gebaut. Ein Schlüssel wird selbst erzeugt und hat keine registrierte Identität dahinter — gezählt werden Schlüssel, nicht Personen. MIT-0

Ausführungsbelege

Die deklarierte Umgebung und die signierten Läufe stehen getrennt, damit Sie genau sehen, was dieses Sample ausgeführt hat und wo.

Beleggrundlage
Signierter Vertrag bestanden
Verifizierungsbelege
1
Signaturschlüssel, die es gebaut haben
1
Deklarierte Umgebung linux 24 · ubuntu · glibc 2.39 x64 npm

Umgebungen der Verifizierungsläufe

Umgebung Contract Stufen Lauf
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

Fall

HOW
Ziel
verify cacache.get in pkg:npm/cacache@19.0.1
Pakete
Symbole
  • cacache.get
  • cacache.put
Erstellt
2026-10-17T12:58:16Z

Contract

  1. cacache.get(cache, key) resolves with { data, metadata, size, integrity } for an existing entry and rejects with ENOENT for a missing key
  2. cacache.get.byDigest(cache, integrity) returns the raw Buffer content matching the stored integrity digest
  3. cacache.get.info(cache, key) and cacache.get.hasContent(cache, integrity) inspect entry metadata and content presence without reading data
  4. cacache.get.stream(cache, key) and cacache.get.stream.byDigest(cache, integrity) stream the cached payload

Dateien

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

Quellartefakt herunterladen (tar.gz)

Quelltext

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 cacache.get in pkg:npm/cacache@19.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/cacache@19.0.1
Demonstrate these symbols/APIs:
  - cacache.get

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:sha256:64cb70160a7c7b2c71b2ac82ce52f1621a96c070480f6733b2a0e7a15a6f753c","contract":["cacache.get(cache, key) resolves with { data, metadata, size, integrity } for an existing entry and rejects with ENOENT for a missing key","cacache.get.byDigest(cache, integrity) returns the raw Buffer content matching the stored integrity digest","cacache.get.info(cache, key) and cacache.get.hasContent(cache, integrity) inspect entry metadata and content presence without reading data","cacache.get.stream(cache, key) and cacache.get.stream.byDigest(cache, integrity) stream the cached payload"],"goal":"verify cacache.get in pkg:npm/cacache@19.0.1","kind":"HOW","packages":["pkg:npm/cacache@19.0.1"],"schemaVersion":1,"symbols":["cacache.get","cacache.put"]},"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","symbols":["cacache.get","cacache.put"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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  "name": "cacache-get-sample",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
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}
package.json
{
  "name": "cacache-get-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 cacache.get in pkg:npm/cacache@19.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/cacache@19.0.1"
  ],
  "symbols": [
    "cacache.get"
  ]
}
src/index.mjs
import cacache from 'cacache';

export async function runGetVerification(cacheDir) {
  const key = 'sample-entry-key';
  const payload = Buffer.from('verified cache payload content', 'utf8');
  const metadata = { category: 'test', version: 2 };

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

  const entry = await cacache.get(cacheDir, key);
  const byDigestData = await cacache.get.byDigest(cacheDir, integrity);
  const info = await cacache.get.info(cacheDir, key);
  const hasContent = await cacache.get.hasContent(cacheDir, integrity);

  const streamChunks = [];
  await new Promise((resolve, reject) => {
    const stream = cacache.get.stream(cacheDir, key);
    stream.on('data', (chunk) => streamChunks.push(chunk));
    stream.on('end', resolve);
    stream.on('error', reject);
  });
  const streamedData = Buffer.concat(streamChunks);

  const digestStreamChunks = [];
  await new Promise((resolve, reject) => {
    const stream = cacache.get.stream.byDigest(cacheDir, integrity);
    stream.on('data', (chunk) => digestStreamChunks.push(chunk));
    stream.on('end', resolve);
    stream.on('error', reject);
  });
  const digestStreamedData = Buffer.concat(digestStreamChunks);

  return {
    integrity: String(integrity),
    entryData: entry.data.toString('utf8'),
    entrySize: entry.size,
    entryMetadata: entry.metadata,
    entryIntegrity: String(entry.integrity),
    byDigestText: byDigestData.toString('utf8'),
    infoKey: info.key,
    infoSize: info.size,
    infoMetadata: info.metadata,
    hasContentSize: hasContent.size,
    streamedText: streamedData.toString('utf8'),
    digestStreamedText: digestStreamedData.toString('utf8')
  };
}
test/contract.mjs
import assert from 'node:assert/strict';
import { rm } from 'node:fs/promises';
import cacache from 'cacache';
import { runGetVerification } from '../src/index.mjs';

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

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

  assert.equal(result.integrity.startsWith('sha512-'), true);
  assert.equal(result.entryData, 'verified cache payload content');
  assert.equal(result.entrySize, 30);
  assert.deepEqual(result.entryMetadata, { category: 'test', version: 2 });
  assert.equal(result.entryIntegrity, result.integrity);
  assert.equal(result.byDigestText, 'verified cache payload content');
  assert.equal(result.infoKey, 'sample-entry-key');
  assert.equal(result.infoSize, 30);
  assert.deepEqual(result.infoMetadata, { category: 'test', version: 2 });
  assert.equal(result.hasContentSize, 30);
  assert.equal(result.streamedText, 'verified cache payload content');
  assert.equal(result.digestStreamedText, 'verified cache payload content');

  await assert.rejects(
    () => cacache.get(cacheDir, 'missing-key'),
    (err) => err && err.code === 'ENOENT'
  );
} finally {
  await rm(cacheDir, { recursive: true, force: true });
}

Ursprungs-Seeder

anonym