CodeSampleX

Пример

@electron/get 3.1.0

Проверенный пример — npm @electron/get 3.1.0. Контракт выполнен на node 22 · linux alpine/x64 · docker и пройден: getHostArch returns the host architecture…

sha256:e0a8972ef0e390d6f555ca1fbdd653abf5146254d94f79c65b47dcbfcdc1170a

Эта сеть предлагает одно: образец, который собирается. Она запустила его в песочнице и сохранила подписанную квитанцию. Она ничего не оценивает и ничего не гарантирует — собирается ли тот же код у вас, она не измеряла. Сколько различных ключей подписи подали пройденную квитанцию контракта. Один — только автор; больше одного — значит, кто-то ещё тоже собрал. Ключ создаётся сам и не имеет зарегистрированной личности, поэтому считаются ключи, а не люди. MIT-0

Свидетельства выполнения

Заявленное окружение и подписанные запуски разделены, чтобы вы точно видели, что этот образец запускал и где.

Основа свидетельства
Подписанный контракт пройден
Квитанции проверки
1
Ключи подписи, собравшие его
1
Заявленная среда linux 24 · ubuntu · glibc 2.39 x64 npm

Среды запусков проверки

Окружение Контракт Этапы Запуск
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…		 2026-08-23

Кейс

HOW
Цель
verify pkg:npm/%40electron/get@3.1.0
Пакеты
Создан
2026-08-23T14:03:06Z

Контракт

  1. getHostArch returns the host architecture string corresponding to Node process architecture
  2. ElectronDownloadCacheMode enum provides standard cache mode values for ReadWrite, ReadOnly, WriteOnly, and Bypass
  3. downloadArtifact downloads and caches a platform artifact using a custom Downloader implementation
  4. downloadArtifact with custom checksums validates SHA256 integrity of the downloaded artifact
  5. downloadArtifact with mismatched checksums rejects with a checksum validation error
  6. downloadArtifact rejects with an Error when the version property is not provided as a string
  7. download fetches the default electron binary for the host platform and architecture using custom Downloader
  8. GotDownloader is exported as a class conforming to the Downloader interface

Файлы

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

Скачать артефакт с исходным кодом (tar.gz)

Исходный код

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/%40electron/get@3.1.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40electron/get@3.1.0

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:sha256:07d4fef639e93256e8a02b712c0ccfe01fa062d39210ad78f01623397e952faf","contract":["getHostArch returns the host architecture string corresponding to Node process architecture","ElectronDownloadCacheMode enum provides standard cache mode values for ReadWrite, ReadOnly, WriteOnly, and Bypass","downloadArtifact downloads and caches a platform artifact using a custom Downloader implementation","downloadArtifact with custom checksums validates SHA256 integrity of the downloaded artifact","downloadArtifact with mismatched checksums rejects with a checksum validation error","downloadArtifact rejects with an Error when the version property is not provided as a string","download fetches the default electron binary for the host platform and architecture using custom Downloader","GotDownloader is exported as a class conforming to the Downloader interface"],"goal":"verify pkg:npm/%40electron/get@3.1.0","kind":"HOW","packages":["pkg:npm/%40electron/get@3.1.0"],"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/%40electron/get@3.1.0"],"schemaVersion":1,"subject":"pkg:npm/%40electron/get@3.1.0","verifierAdapter":"node-typescript@1"}
package-lock.json
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package.json
{
  "name": "sample-electron-get",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "@electron/get": "3.1.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/%40electron/get@3.1.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40electron/get@3.1.0"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import crypto from 'node:crypto';
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import process from 'node:process';
import {
  download,
  downloadArtifact,
  ElectronDownloadCacheMode,
  getHostArch,
  GotDownloader,
} from '@electron/get';

class MockDownloader {
  constructor(content = 'sample artifact payload') {
    this.content = content;
    this.downloadCount = 0;
  }

  async download(url, targetFilePath, _options) {
    this.downloadCount++;
    await fs.promises.mkdir(path.dirname(targetFilePath), { recursive: true });
    await fs.promises.writeFile(targetFilePath, this.content);
  }
}

// 1. getHostArch returns the host architecture string corresponding to Node process architecture
{
  const arch = getHostArch();
  assert.equal(typeof arch, 'string');
  assert.ok(arch.length > 0);
  if (process.arch === 'x64') {
    assert.equal(arch, 'x64');
  } else if (process.arch === 'arm64') {
    assert.equal(arch, 'arm64');
  }
}

// 2. ElectronDownloadCacheMode enum provides standard cache mode values for ReadWrite, ReadOnly, WriteOnly, and Bypass
{
  assert.equal(ElectronDownloadCacheMode.ReadWrite, 0);
  assert.equal(ElectronDownloadCacheMode.ReadOnly, 1);
  assert.equal(ElectronDownloadCacheMode.WriteOnly, 2);
  assert.equal(ElectronDownloadCacheMode.Bypass, 3);
  assert.equal(ElectronDownloadCacheMode[0], 'ReadWrite');
  assert.equal(ElectronDownloadCacheMode[1], 'ReadOnly');
  assert.equal(ElectronDownloadCacheMode[2], 'WriteOnly');
  assert.equal(ElectronDownloadCacheMode[3], 'Bypass');
}

// 3. downloadArtifact downloads and caches a platform artifact using a custom Downloader implementation
{
  const tmpDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'csx-contract-'));
  const cacheDir = path.join(tmpDir, 'cache');
  const tempDir = path.join(tmpDir, 'temp');
  await fs.promises.mkdir(cacheDir, { recursive: true });
  await fs.promises.mkdir(tempDir, { recursive: true });

  const mockDownloader = new MockDownloader('sample-electron-binary');
  const downloadedPath = await downloadArtifact({
    version: '31.0.0',
    artifactName: 'electron',
    platform: 'linux',
    arch: 'x64',
    cacheRoot: cacheDir,
    tempDirectory: tempDir,
    downloader: mockDownloader,
    unsafelyDisableChecksums: true,
    cacheMode: ElectronDownloadCacheMode.ReadWrite,
  });

  assert.ok(typeof downloadedPath === 'string');
  assert.ok(fs.existsSync(downloadedPath));
  assert.equal(await fs.promises.readFile(downloadedPath, 'utf8'), 'sample-electron-binary');
  assert.equal(mockDownloader.downloadCount, 1);

  // Subsequent call should hit cache
  const cachedPath = await downloadArtifact({
    version: '31.0.0',
    artifactName: 'electron',
    platform: 'linux',
    arch: 'x64',
    cacheRoot: cacheDir,
    tempDirectory: tempDir,
    downloader: mockDownloader,
    unsafelyDisableChecksums: true,
    cacheMode: ElectronDownloadCacheMode.ReadWrite,
  });

  assert.equal(cachedPath, downloadedPath);
  assert.equal(mockDownloader.downloadCount, 1);

  await fs.promises.rm(tmpDir, { recursive: true, force: true });
}

// 4. downloadArtifact with custom checksums validates SHA256 integrity of the downloaded artifact
{
  const tmpDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'csx-contract-'));
  const cacheDir = path.join(tmpDir, 'cache');
  const tempDir = path.join(tmpDir, 'temp');
  await fs.promises.mkdir(cacheDir, { recursive: true });
  await fs.promises.mkdir(tempDir, { recursive: true });

  const payload = 'validated-artifact-content';
  const sha256 = crypto.createHash('sha256').update(payload).digest('hex');
  const filename = 'electron-v31.0.0-linux-x64.zip';

  const downloadedPath = await downloadArtifact({
    version: '31.0.0',
    artifactName: 'electron',
    platform: 'linux',
    arch: 'x64',
    cacheRoot: cacheDir,
    tempDirectory: tempDir,
    downloader: new MockDownloader(payload),
    checksums: {
      [filename]: sha256,
    },
    cacheMode: ElectronDownloadCacheMode.ReadWrite,
  });

  assert.ok(fs.existsSync(downloadedPath));
  assert.equal(await fs.promises.readFile(downloadedPath, 'utf8'), payload);

  await fs.promises.rm(tmpDir, { recursive: true, force: true });
}

// 5. downloadArtifact with mismatched checksums rejects with a checksum validation error
{
  const tmpDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'csx-contract-'));
  const cacheDir = path.join(tmpDir, 'cache');
  const tempDir = path.join(tmpDir, 'temp');
  await fs.promises.mkdir(cacheDir, { recursive: true });
  await fs.promises.mkdir(tempDir, { recursive: true });

  await assert.rejects(
    downloadArtifact({
      version: '31.0.0',
      artifactName: 'chromedriver',
      platform: 'linux',
      arch: 'x64',
      cacheRoot: cacheDir,
      tempDirectory: tempDir,
      downloader: new MockDownloader('corrupted payload'),
      checksums: {
        'chromedriver-v31.0.0-linux-x64.zip': '0000000000000000000000000000000000000000000000000000000000000000',
      },
      cacheMode: ElectronDownloadCacheMode.Bypass,
    }),
    (err) => {
      assert.ok(err instanceof Error);
      assert.match(err.message, /did not match expected checksum/i);
      return true;
    }
  );

  await fs.promises.rm(tmpDir, { recursive: true, force: true });
}

// 6. downloadArtifact rejects with an Error when the version property is not provided as a string
{
  await assert.rejects(
    downloadArtifact({}),
    (err) => {
      assert.ok(err instanceof Error);
      assert.match(err.message, /Expected property "version" to be provided as a string/i);
      return true;
    }
  );
}

// 7. download fetches the default electron binary for the host platform and architecture using custom Downloader
{
  const tmpDir = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'csx-contract-'));
  const cacheDir = path.join(tmpDir, 'cache');
  const tempDir = path.join(tmpDir, 'temp');
  await fs.promises.mkdir(cacheDir, { recursive: true });
  await fs.promises.mkdir(tempDir, { recursive: true });

  const mockDownloader = new MockDownloader('default-electron-binary');
  const downloadedPath = await download('31.0.0', {
    cacheRoot: cacheDir,
    tempDirectory: tempDir,
    downloader: mockDownloader,
    unsafelyDisableChecksums: true,
    cacheMode: ElectronDownloadCacheMode.ReadWrite,
  });

  assert.ok(typeof downloadedPath === 'string');
  assert.ok(fs.existsSync(downloadedPath));
  assert.equal(await fs.promises.readFile(downloadedPath, 'utf8'), 'default-electron-binary');

  await fs.promises.rm(tmpDir, { recursive: true, force: true });
}

// 8. GotDownloader is exported as a class conforming to the Downloader interface
{
  assert.equal(typeof GotDownloader, 'function');
  const instance = new GotDownloader();
  assert.equal(typeof instance.download, 'function');
}

Исходный сидер

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