CodeSampleX

Ejemplo

jsdom 25.0.1

Muestra verificada para npm jsdom 25.0.1. El contrato se ejecutó en node 22 · linux alpine/x64 · docker y pasó: JSDOM parses HTML markup and provides…

sha256:5eff6d24fa3702fbcc5542d8c74820cdee575fcedb95ea91a6b03d0be3efd117

Esta red ofrece una sola cosa: una muestra que compila. La ejecutó en un sandbox y guardó el recibo firmado. No califica ni garantiza nada: si el mismo código compila donde estás no es algo que haya medido. Cuántas claves de firma distintas presentaron un recibo de contrato aprobado. Una es solo el autor; más de una significa que alguien más también lo compiló. Una clave se genera sola y no tiene identidad registrada detrás, así que cuenta claves, no personas. MIT-0

Evidencia de ejecución

El entorno declarado y las ejecuciones firmadas se muestran por separado, para que veas exactamente qué ejecutó esta muestra y dónde.

Base de evidencia
Contrato firmado aprobado
Recibos de verificación
1
Claves de firma que lo compilaron
1
Entorno declarado node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Entornos de las ejecuciones de verificación

Entorno Contrato Etapas Ejecución
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

Caso

HOW
Objetivo
verify pkg:npm/jsdom@25.0.1
Paquetes
Entorno
node 22.23.2
Creado
2026-08-20T07:03:04Z

Contrato

  1. JSDOM parses HTML markup and provides standard DOM window and document objects
  2. JSDOM supports DOM element query, creation, mutation, and serialization
  3. JSDOM creates and populates DocumentFragment instances from HTML fragments via JSDOM.fragment
  4. JSDOM configures window location and execution environment using options
  5. VirtualConsole captures and redirects console messages generated within JSDOM window context

Archivos

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

Descargar el artefacto de código fuente (tar.gz)

Código fuente

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/jsdom@25.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jsdom@25.0.1
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - packageManager: npm@10.9.8
  - runtime: node@22.23.2

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:sha256:377709d81cfed67606dfbbb825c385c9842bbcecb55a108af6d2509b4c40a94d","constraints":{"executionContext":"node"},"contract":["JSDOM parses HTML markup and provides standard DOM window and document objects","JSDOM supports DOM element query, creation, mutation, and serialization","JSDOM creates and populates DocumentFragment instances from HTML fragments via JSDOM.fragment","JSDOM configures window location and execution environment using options","VirtualConsole captures and redirects console messages generated within JSDOM window context"],"goal":"verify pkg:npm/jsdom@25.0.1","kind":"HOW","packages":["pkg:npm/jsdom@25.0.1"],"schemaVersion":1},"contractCommand":["node","test/contract.js"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/jsdom@25.0.1"],"schemaVersion":1,"verifierAdapter":"node-typescript@1"}
package-lock.json
{
  "name": "jsdom-sample",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "jsdom-sample",
      "version": "1.0.0",
      "dependencies": {
        "jsdom": "25.0.1"
      }
    },
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      "version": "3.2.0",
      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-3.2.0.tgz",
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      "license": "MIT",
      "dependencies": {
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        "@csstools/css-color-parser": "^3.0.9",
        "@csstools/css-parser-algorithms": "^3.0.4",
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}
package.json
{
  "name": "jsdom-sample",
  "version": "1.0.0",
  "dependencies": {
    "jsdom": "25.0.1"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/jsdom@25.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jsdom@25.0.1"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}
src/index.js
const { JSDOM, VirtualConsole } = require('jsdom');

/**
 * Creates a JSDOM instance with provided HTML and options.
 *
 * @param {string} [html=''] - HTML content to initialize.
 * @param {object} [options={}] - JSDOM configuration options.
 * @returns {JSDOM}
 */
function createDOM(html = '', options = {}) {
  return new JSDOM(html, options);
}

/**
 * Parses an HTML string into a DocumentFragment.
 *
 * @param {string} html - HTML fragment string.
 * @returns {DocumentFragment}
 */
function parseFragment(html) {
  return JSDOM.fragment(html);
}

/**
 * Serializes a JSDOM instance or document to HTML string.
 *
 * @param {JSDOM} dom - JSDOM instance.
 * @returns {string}
 */
function serializeDOM(dom) {
  return dom.serialize();
}

/**
 * Executes a function with a VirtualConsole capturing logs.
 *
 * @param {string} html - HTML content with script to run.
 * @param {object} [options={}] - Options for JSDOM.
 * @returns {{ dom: JSDOM, logs: string[] }}
 */
function runWithConsoleCapture(html, options = {}) {
  const virtualConsole = new VirtualConsole();
  const logs = [];
  virtualConsole.on('log', (message) => {
    logs.push(String(message));
  });

  const dom = new JSDOM(html, {
    runScripts: 'dangerously',
    virtualConsole,
    ...options,
  });

  return { dom, logs };
}

module.exports = {
  JSDOM,
  VirtualConsole,
  createDOM,
  parseFragment,
  serializeDOM,
  runWithConsoleCapture,
};
test/contract.js
const assert = require('node:assert/strict');
const {
  JSDOM,
  VirtualConsole,
  createDOM,
  parseFragment,
  serializeDOM,
  runWithConsoleCapture,
} = require('../src/index.js');

function testDocumentParsingAndWindow() {
  const html = '<!DOCTYPE html><html><head><title>Test Page</title></head><body><h1 id="header">Hello jsdom</h1></body></html>';
  const dom = createDOM(html);

  assert.ok(dom.window, 'dom.window should be defined');
  assert.ok(dom.window.document, 'dom.window.document should be defined');
  assert.strictEqual(dom.window.document.title, 'Test Page');

  const heading = dom.window.document.getElementById('header');
  assert.ok(heading, 'header element should exist');
  assert.strictEqual(heading.textContent, 'Hello jsdom');
  assert.strictEqual(heading.tagName, 'H1');
}

function testDOMManipulationAndSerialization() {
  const dom = createDOM('<!DOCTYPE html><html><body><ul id="list"><li>Item 1</li></ul></body></html>');
  const { document } = dom.window;

  const list = document.getElementById('list');
  assert.strictEqual(list.children.length, 1);

  const newItem = document.createElement('li');
  newItem.textContent = 'Item 2';
  newItem.className = 'active';
  list.appendChild(newItem);

  assert.strictEqual(list.children.length, 2);
  assert.strictEqual(list.lastElementChild.textContent, 'Item 2');
  assert.strictEqual(list.lastElementChild.className, 'active');

  const serialized = serializeDOM(dom);
  assert.ok(serialized.includes('<li class="active">Item 2</li>'), 'serialized HTML contains new element');
}

function testFragmentParsing() {
  const fragment = parseFragment('<p class="first">First</p><p class="second">Second</p>');

  assert.strictEqual(fragment.childElementCount, 2);
  assert.strictEqual(fragment.firstElementChild.className, 'first');
  assert.strictEqual(fragment.firstElementChild.textContent, 'First');
  assert.strictEqual(fragment.lastElementChild.className, 'second');
  assert.strictEqual(fragment.lastElementChild.textContent, 'Second');
}

function testOptionsAndUrl() {
  const dom = createDOM('<!DOCTYPE html><html><body></body></html>', {
    url: 'https://example.com/subpath/page.html',
    contentType: 'text/html',
  });

  assert.strictEqual(dom.window.location.href, 'https://example.com/subpath/page.html');
  assert.strictEqual(dom.window.location.origin, 'https://example.com');
  assert.strictEqual(dom.window.location.pathname, '/subpath/page.html');
}

function testVirtualConsole() {
  const html = '<!DOCTYPE html><html><body><script>console.log("captured message 1"); console.log("captured message 2");</script></body></html>';
  const { logs } = runWithConsoleCapture(html);

  assert.strictEqual(logs.length, 2);
  assert.strictEqual(logs[0], 'captured message 1');
  assert.strictEqual(logs[1], 'captured message 2');
}

function main() {
  testDocumentParsingAndWindow();
  testDOMManipulationAndSerialization();
  testFragmentParsing();
  testOptionsAndUrl();
  testVirtualConsole();

  console.log('All pkg:npm/jsdom@25.0.1 contracts passed successfully.');
}

main();

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