CodeSampleX

Beispiel

cacache 19.0.1: put, get

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

sha256:7b16d039c66bdcce5109d3a30b0abed63880d4e742c7e77cbf2b243e1de8ec4b

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.put in pkg:npm/cacache@19.0.1
Pakete
Symbole
  • cacache.put
  • cacache.get
Erstellt
2026-10-17T13:11:22Z

Contract

  1. cacache.put(cache, key, data, opts) stores content and index metadata with custom algorithms and memoize options, returning the computed integrity digest
  2. cacache.put rejects with EBADSIZE when opts.size does not match data.length and with EINTEGRITY when opts.integrity fails verification
  3. cacache.put.stream(cache, key, opts) returns a writable pipeline that writes streamed content to the cache and emits integrity and size events

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.put 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.put

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:sha256:6f89c8d32428369b3f29a01b44c2b5379d9d52e8385f592b65143849d378a0e5","contract":["cacache.put(cache, key, data, opts) stores content and index metadata with custom algorithms and memoize options, returning the computed integrity digest","cacache.put rejects with EBADSIZE when opts.size does not match data.length and with EINTEGRITY when opts.integrity fails verification","cacache.put.stream(cache, key, opts) returns a writable pipeline that writes streamed content to the cache and emits integrity and size events"],"goal":"verify cacache.put in pkg:npm/cacache@19.0.1","kind":"HOW","packages":["pkg:npm/cacache@19.0.1"],"schemaVersion":1,"symbols":["cacache.put","cacache.get"]},"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.put","cacache.get"],"verifierAdapter":"node-typescript@1"}
package-lock.json
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  "name": "cacache-put-sample",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
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package.json
{
  "name": "cacache-put-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.put in pkg:npm/cacache@19.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/cacache@19.0.1"
  ],
  "symbols": [
    "cacache.put"
  ]
}
src/index.mjs
import cacache from 'cacache';

export async function runPutVerification(cacheDir) {
  const key = 'put-buffer-entry';
  const payload = Buffer.from('content stored via cacache.put', 'utf8');
  const metadata = { origin: 'unit', revision: 1 };
  const memoStore = new Map();

  const integrity = await cacache.put(cacheDir, key, payload, {
    metadata,
    algorithms: ['sha256'],
    size: payload.length,
    memoize: memoStore
  });

  const stored = await cacache.get(cacheDir, key);

  const streamKey = 'put-stream-entry';
  const streamPayload = Buffer.from('streamed content via cacache.put.stream', 'utf8');
  const streamMeta = { mode: 'stream' };

  let emittedIntegrity;
  let emittedSize;

  await new Promise((resolve, reject) => {
    const writable = cacache.put.stream(cacheDir, streamKey, { metadata: streamMeta });
    writable.on('integrity', (int) => {
      emittedIntegrity = String(int);
    });
    writable.on('size', (s) => {
      emittedSize = s;
    });
    writable.on('error', reject);
    writable.on('finish', resolve);
    writable.end(streamPayload);
  });

  const streamStored = await cacache.get(cacheDir, streamKey);

  return {
    integrity: String(integrity),
    storedText: stored.data.toString('utf8'),
    storedSize: stored.size,
    storedMetadata: stored.metadata,
    memoHasKey: memoStore.has(`key:${cacheDir}:${key}`),
    memoHasDigest: memoStore.has(`digest:${cacheDir}:${integrity}`),
    emittedIntegrity,
    emittedSize,
    streamStoredText: streamStored.data.toString('utf8'),
    streamStoredMetadata: streamStored.metadata
  };
}
test/contract.mjs
import assert from 'node:assert/strict';
import { rm } from 'node:fs/promises';
import cacache from 'cacache';
import { runPutVerification } from '../src/index.mjs';

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

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

  assert.equal(result.integrity.startsWith('sha256-'), true);
  assert.equal(result.storedText, 'content stored via cacache.put');
  assert.equal(result.storedSize, 30);
  assert.deepEqual(result.storedMetadata, { origin: 'unit', revision: 1 });
  assert.equal(result.memoHasKey, true);
  assert.equal(result.memoHasDigest, true);

  assert.equal(result.emittedIntegrity.startsWith('sha512-'), true);
  assert.equal(result.emittedSize, 39);
  assert.equal(result.streamStoredText, 'streamed content via cacache.put.stream');
  assert.deepEqual(result.streamStoredMetadata, { mode: 'stream' });

  await assert.rejects(
    () => cacache.put(cacheDir, 'bad-size-key', Buffer.from('abc'), { size: 10 }),
    (err) => err && err.code === 'EBADSIZE'
  );

  await assert.rejects(
    () => cacache.put(cacheDir, 'bad-integrity-key', Buffer.from('abc'), {
      integrity: 'sha512-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=='
    }),
    (err) => err && err.code === 'EINTEGRITY'
  );
} finally {
  await rm(cacheDir, { recursive: true, force: true });
}

Ursprungs-Seeder

anonym