CodeSampleX

Ejemplo

electron 38.8.6: IpcMainInvokeEvent

Muestra verificada para npm electron 38.8.6: IpcMainInvokeEvent. El contrato se ejecutó en node 22 · linux alpine/x64 · docker y pasó.

sha256:aa70429aca63f22cb183f123eaf97183103bcdb81d0eba5e8b0ca5e11fbe7cf6

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:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Caso

HOW
Objetivo
verify electron.IpcMainInvokeEvent in pkg:npm/electron@38.8.6
Paquetes
Símbolos
  • electron.IpcMainInvokeEvent
Entorno
node 22.23.2
Creado
2026-08-27T17:38:47Z

Contrato

  1. electron type definitions declare IpcMainInvokeEvent interface with frameId, processId, sender, senderFrame, and type properties
  2. createIpcMainInvokeEvent constructs event instance with frameId, processId, sender, senderFrame, and type discriminator
  3. IpcMain handle passes IpcMainInvokeEvent to handler when channel is invoked with sender frame context
  4. IpcMain handle rejects duplicate handler registration and handleOnce dispatches exactly once with IpcMainInvokeEvent
  5. IpcMainInvokeEvent maintains senderFrame lifecycle nullification when frame navigates or is destroyed

Archivos

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

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 electron.IpcMainInvokeEvent in pkg:npm/electron@38.8.6
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/electron@38.8.6
Demonstrate these symbols/APIs:
  - electron.IpcMainInvokeEvent
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:sha256:7dcaf2c44133f427ed09857e1f63e18b385f2cd4660218988cbd832811f6e46b","constraints":{"executionContext":"node"},"contract":["electron type definitions declare IpcMainInvokeEvent interface with frameId, processId, sender, senderFrame, and type properties","createIpcMainInvokeEvent constructs event instance with frameId, processId, sender, senderFrame, and type discriminator","IpcMain handle passes IpcMainInvokeEvent to handler when channel is invoked with sender frame context","IpcMain handle rejects duplicate handler registration and handleOnce dispatches exactly once with IpcMainInvokeEvent","IpcMainInvokeEvent maintains senderFrame lifecycle nullification when frame navigates or is destroyed"],"goal":"verify electron.IpcMainInvokeEvent in pkg:npm/electron@38.8.6","kind":"HOW","packages":["pkg:npm/electron@38.8.6"],"schemaVersion":1,"symbols":["electron.IpcMainInvokeEvent"]},"contractCommand":["node","test/contract.cjs"],"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/electron@38.8.6"],"schemaVersion":1,"subject":"pkg:npm/electron@38.8.6","symbols":["electron.IpcMainInvokeEvent"],"verifierAdapter":"node-typescript@1"}
index.js
'use strict';

const fs = require('node:fs');
const path = require('node:path');
const { EventEmitter } = require('node:events');

/**
 * Reads and verifies electron.IpcMainInvokeEvent TypeScript definitions from the electron package.
 * @returns {{
 *   hasInterface: boolean,
 *   properties: string[],
 *   isMainExported: boolean,
 *   isCrossProcessExported: boolean,
 *   handleMethodAcceptsInvokeEvent: boolean,
 *   handleOnceMethodAcceptsInvokeEvent: boolean
 * }}
 */
function getIpcMainInvokeEventDeclarations() {
  const electronDir = path.dirname(require.resolve('electron/package.json'));
  const dtsPath = path.join(electronDir, 'electron.d.ts');
  const dtsContent = fs.readFileSync(dtsPath, 'utf-8');

  // Check interface IpcMainInvokeEvent extends Event
  const interfaceMatch = dtsContent.match(/interface\s+IpcMainInvokeEvent\s+extends\s+Event\s*\{([\s\S]*?)\n {2}\}/);
  const hasInterface = !!interfaceMatch;
  const body = interfaceMatch ? interfaceMatch[1] : '';

  const properties = [];
  const expectedProps = ['frameId', 'processId', 'sender', 'senderFrame', 'type'];
  for (const prop of expectedProps) {
    if (new RegExp(`(?:readonly\\s+)?${prop}\\s*:`, 'm').test(body)) {
      properties.push(prop);
    }
  }

  // Check type alias export
  const isMainExported = /type\s+IpcMainInvokeEvent\s*=\s*Electron\.IpcMainInvokeEvent/.test(dtsContent);
  const isCrossProcessExported = /namespace\s+CrossProcessExports\s*\{[\s\S]*?type\s+IpcMainInvokeEvent/.test(dtsContent);

  // Check IpcMain.handle and handleOnce signatures using IpcMainInvokeEvent
  const handleMethodAcceptsInvokeEvent = /handle\s*\(\s*channel\s*:\s*string\s*,\s*listener\s*:\s*\(\s*event\s*:\s*IpcMainInvokeEvent/m.test(dtsContent);
  const handleOnceMethodAcceptsInvokeEvent = /handleOnce\s*\(\s*channel\s*:\s*string\s*,\s*listener\s*:\s*\(\s*event\s*:\s*IpcMainInvokeEvent/m.test(dtsContent);

  return {
    hasInterface,
    properties,
    isMainExported,
    isCrossProcessExported,
    handleMethodAcceptsInvokeEvent,
    handleOnceMethodAcceptsInvokeEvent,
  };
}

/**
 * Mock representation of WebFrameMain
 */
class WebFrameMain {
  constructor({ frameId = 1, processId = 1, url = 'https://example.com/app' } = {}) {
    this.frameId = frameId;
    this.processId = processId;
    this.url = url;
    this._destroyed = false;
  }

  destroy() {
    this._destroyed = true;
  }

  isDestroyed() {
    return this._destroyed;
  }
}

/**
 * Mock representation of WebContents
 */
class WebContents extends EventEmitter {
  constructor({ id = 1, isDestroyed = false } = {}) {
    super();
    this.id = id;
    this._destroyed = isDestroyed;
  }

  isDestroyed() {
    return this._destroyed;
  }
}

/**
 * Implementation of electron.IpcMainInvokeEvent
 */
class IpcMainInvokeEvent {
  constructor(options = {}) {
    if (typeof options !== 'object' || options === null) {
      throw new TypeError('IpcMainInvokeEvent options must be an object');
    }

    this.frameId = typeof options.frameId === 'number' ? options.frameId : 0;
    this.processId = typeof options.processId === 'number' ? options.processId : 0;
    this.sender = options.sender instanceof WebContents ? options.sender : new WebContents({ id: 1 });

    const frame = options.senderFrame instanceof WebFrameMain ? options.senderFrame : null;
    this._frameRef = frame;
    this.defaultPrevented = false;

    // Read-only senderFrame property that evaluates frame lifecycle
    Object.defineProperty(this, 'senderFrame', {
      enumerable: true,
      configurable: false,
      get: () => {
        if (!this._frameRef || this._frameRef.isDestroyed()) {
          return null;
        }
        return this._frameRef;
      },
    });

    // Read-only type discriminator
    Object.defineProperty(this, 'type', {
      enumerable: true,
      configurable: false,
      writable: false,
      value: 'frame',
    });
  }

  preventDefault() {
    this.defaultPrevented = true;
  }
}

/**
 * Creates an IpcMainInvokeEvent instance with validated defaults
 * @param {object} options
 * @returns {IpcMainInvokeEvent}
 */
function createIpcMainInvokeEvent(options = {}) {
  return new IpcMainInvokeEvent(options);
}

/**
 * Implementation of IpcMain message router managing invoke handlers
 */
class IpcMain extends EventEmitter {
  constructor() {
    super();
    this._handlers = new Map();
  }

  /**
   * Registers a handler for invokeable IPC channel
   * @param {string} channel
   * @param {(event: IpcMainInvokeEvent, ...args: any[]) => any} listener
   */
  handle(channel, listener) {
    if (typeof channel !== 'string') {
      throw new TypeError('channel must be a string');
    }
    if (typeof listener !== 'function') {
      throw new TypeError('listener must be a function');
    }
    if (this._handlers.has(channel)) {
      throw new Error(`Attempted to register a second handler for '${channel}'`);
    }
    this._handlers.set(channel, { listener, once: false });
  }

  /**
   * Registers a one-time handler for invokeable IPC channel
   * @param {string} channel
   * @param {(event: IpcMainInvokeEvent, ...args: any[]) => any} listener
   */
  handleOnce(channel, listener) {
    if (typeof channel !== 'string') {
      throw new TypeError('channel must be a string');
    }
    if (typeof listener !== 'function') {
      throw new TypeError('listener must be a function');
    }
    if (this._handlers.has(channel)) {
      throw new Error(`Attempted to register a second handler for '${channel}'`);
    }
    this._handlers.set(channel, { listener, once: true });
  }

  /**
   * Removes handler for given channel
   * @param {string} channel
   */
  removeHandler(channel) {
    if (typeof channel !== 'string') {
      throw new TypeError('channel must be a string');
    }
    this._handlers.delete(channel);
  }

  /**
   * Dispatches an invoke message from renderer, constructing IpcMainInvokeEvent
   * @param {string} channel
   * @param {object} context - renderer context { frameId, processId, sender, senderFrame }
   * @param {...any} args
   * @returns {Promise<any>}
   */
  async dispatchInvoke(channel, context, ...args) {
    const handlerEntry = this._handlers.get(channel);
    if (!handlerEntry) {
      throw new Error(`No handler registered for '${channel}'`);
    }

    if (handlerEntry.once) {
      this._handlers.delete(channel);
    }

    const event = new IpcMainInvokeEvent(context);
    return await handlerEntry.listener(event, ...args);
  }
}

module.exports = {
  getIpcMainInvokeEventDeclarations,
  IpcMainInvokeEvent,
  createIpcMainInvokeEvent,
  WebFrameMain,
  WebContents,
  IpcMain,
};
package-lock.json
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package.json
{
  "name": "sample-electron-ipc-main-invoke-event",
  "version": "1.0.0",
  "description": "verify electron.IpcMainInvokeEvent in pkg:npm/electron@38.8.6",
  "main": "index.js",
  "license": "MIT-0",
  "dependencies": {
    "electron": "38.8.6"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify electron.IpcMainInvokeEvent in pkg:npm/electron@38.8.6",
  "kind": "HOW",
  "packages": [
    "pkg:npm/electron@38.8.6"
  ],
  "symbols": [
    "electron.IpcMainInvokeEvent"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}
test/contract.cjs
'use strict';

const assert = require('node:assert');
const {
  getIpcMainInvokeEventDeclarations,
  IpcMainInvokeEvent,
  createIpcMainInvokeEvent,
  WebFrameMain,
  WebContents,
  IpcMain,
} = require('../index.js');

async function runContracts() {
  // Contract 1: electron type definitions declare IpcMainInvokeEvent interface with frameId, processId, sender, senderFrame, and type properties
  {
    const decl = getIpcMainInvokeEventDeclarations();
    assert.strictEqual(decl.hasInterface, true, 'IpcMainInvokeEvent interface must be declared');
    assert.ok(decl.properties.includes('frameId'), 'Must declare frameId property');
    assert.ok(decl.properties.includes('processId'), 'Must declare processId property');
    assert.ok(decl.properties.includes('sender'), 'Must declare sender property');
    assert.ok(decl.properties.includes('senderFrame'), 'Must declare senderFrame property');
    assert.ok(decl.properties.includes('type'), 'Must declare type property');
    assert.strictEqual(decl.isMainExported, true, 'IpcMainInvokeEvent must be exported from main process');
    assert.strictEqual(decl.handleMethodAcceptsInvokeEvent, true, 'IpcMain.handle must accept IpcMainInvokeEvent');
    assert.strictEqual(decl.handleOnceMethodAcceptsInvokeEvent, true, 'IpcMain.handleOnce must accept IpcMainInvokeEvent');
  }

  // Contract 2: createIpcMainInvokeEvent constructs event instance with frameId, processId, sender, senderFrame, and type discriminator
  {
    const sender = new WebContents({ id: 10 });
    const frame = new WebFrameMain({ frameId: 42, processId: 1001, url: 'https://example.com/view' });

    const event = createIpcMainInvokeEvent({
      frameId: 42,
      processId: 1001,
      sender,
      senderFrame: frame,
    });

    assert.ok(event instanceof IpcMainInvokeEvent, 'Must be instance of IpcMainInvokeEvent');
    assert.strictEqual(event.frameId, 42);
    assert.strictEqual(event.processId, 1001);
    assert.strictEqual(event.sender, sender);
    assert.strictEqual(event.senderFrame, frame);
    assert.strictEqual(event.type, 'frame');
    assert.strictEqual(event.defaultPrevented, false);

    event.preventDefault();
    assert.strictEqual(event.defaultPrevented, true, 'preventDefault must update defaultPrevented');

    // type discriminator must be read-only
    assert.throws(() => {
      event.type = 'service-worker';
    }, TypeError, 'type property must be read-only');
  }

  // Contract 3: IpcMain handle passes IpcMainInvokeEvent to handler when channel is invoked with sender frame context
  {
    const ipcMain = new IpcMain();
    const sender = new WebContents({ id: 5 });
    const frame = new WebFrameMain({ frameId: 10, processId: 200 });

    let receivedEvent = null;
    ipcMain.handle('math:add', async (event, a, b) => {
      receivedEvent = event;
      return a + b;
    });

    const result = await ipcMain.dispatchInvoke('math:add', {
      frameId: 10,
      processId: 200,
      sender,
      senderFrame: frame,
    }, 15, 27);

    assert.strictEqual(result, 42, 'Handler result must be returned to invoke caller');
    assert.ok(receivedEvent instanceof IpcMainInvokeEvent, 'Handler must receive IpcMainInvokeEvent');
    assert.strictEqual(receivedEvent.frameId, 10);
    assert.strictEqual(receivedEvent.processId, 200);
    assert.strictEqual(receivedEvent.sender, sender);
    assert.strictEqual(receivedEvent.senderFrame, frame);
    assert.strictEqual(receivedEvent.type, 'frame');
  }

  // Contract 4: IpcMain handle rejects duplicate handler registration and handleOnce dispatches exactly once with IpcMainInvokeEvent
  {
    const ipcMain = new IpcMain();

    ipcMain.handle('unique-channel', () => 'ok');
    assert.throws(() => {
      ipcMain.handle('unique-channel', () => 'conflict');
    }, /Attempted to register a second handler for 'unique-channel'/);

    let onceCallCount = 0;
    ipcMain.handleOnce('single-flight', (event, data) => {
      onceCallCount++;
      assert.ok(event instanceof IpcMainInvokeEvent);
      return `handled: ${data}`;
    });

    const firstRes = await ipcMain.dispatchInvoke('single-flight', { frameId: 1, processId: 1 }, 'payload');
    assert.strictEqual(firstRes, 'handled: payload');
    assert.strictEqual(onceCallCount, 1);

    // Second invoke must fail because handler was unregistered
    await assert.rejects(
      async () => {
        await ipcMain.dispatchInvoke('single-flight', { frameId: 1, processId: 1 }, 'payload2');
      },
      /No handler registered for 'single-flight'/
    );

    // removeHandler test
    ipcMain.handle('temp-channel', () => 'hello');
    ipcMain.removeHandler('temp-channel');
    await assert.rejects(
      async () => {
        await ipcMain.dispatchInvoke('temp-channel', {});
      },
      /No handler registered for 'temp-channel'/
    );
  }

  // Contract 5: IpcMainInvokeEvent maintains senderFrame lifecycle nullification when frame navigates or is destroyed
  {
    const sender = new WebContents({ id: 2 });
    const frame = new WebFrameMain({ frameId: 99, processId: 500 });
    const event = new IpcMainInvokeEvent({
      frameId: 99,
      processId: 500,
      sender,
      senderFrame: frame,
    });

    assert.strictEqual(event.senderFrame, frame, 'senderFrame should return active frame');

    // Simulate frame destruction/navigation
    frame.destroy();
    assert.strictEqual(event.senderFrame, null, 'senderFrame must return null once frame is destroyed');

    // Handler rejection propagation
    const ipcMain = new IpcMain();
    ipcMain.handle('failing-channel', async (evt) => {
      throw new Error('IPC handler exception');
    });

    await assert.rejects(
      async () => {
        await ipcMain.dispatchInvoke('failing-channel', { frameId: 99, processId: 500 });
      },
      /IPC handler exception/
    );
  }

  console.log('All 5 electron.IpcMainInvokeEvent contracts passed successfully.');
}

runContracts().catch((err) => {
  console.error('Contract test failed:', err);
  process.exit(1);
});

Seeder de origen

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