electron 33.4.11: Menu

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.Menu in pkg:npm/electron@33.4.11
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/electron@33.4.11
Demonstrate these symbols/APIs:
  - electron.Menu
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.

{"case":{"caseId":"case:sha256:4a9ae87135e71bb6b8ba0a69fc26c8241172252cb6356ebfeca3993fa92abe5e","constraints":{"executionContext":"node"},"contract":["electron type definitions declare Menu class with static methods buildFromTemplate, setApplicationMenu, getApplicationMenu and instance methods append, insert, getMenuItemById, popup, closePopup","Menu buildFromTemplate constructs hierarchical menu structure supporting submenus, separators, checkboxes, and roles","Menu instance methods append and insert add MenuItems at appropriate index positions and support lookup via getMenuItemById","Menu manages global application menu state via setApplicationMenu and getApplicationMenu","Menu popup and closePopup trigger menu-will-show and menu-will-close lifecycle events on the Menu EventEmitter"],"goal":"verify electron.Menu in pkg:npm/electron@33.4.11","kind":"HOW","packages":["pkg:npm/electron@33.4.11"],"schemaVersion":1,"symbols":["electron.Menu"]},"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@33.4.11"],"schemaVersion":1,"subject":"pkg:npm/electron@33.4.11","symbols":["electron.Menu"],"verifierAdapter":"node-typescript@1"}

"use strict";

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

/**
 * Reads and verifies electron.Menu TypeScript definitions from the electron package.
 * @returns {{
 *   staticMethods: string[],
 *   instanceMethods: string[],
 *   hasMenuClass: boolean,
 *   hasMenuItemClass: boolean,
 *   hasAllKeyMethods: boolean,
 *   events: string[]
 * }}
 */
function getMenuDeclarations() {
  const electronDir = path.dirname(require.resolve("electron/package.json"));
  const dtsPath = path.join(electronDir, "electron.d.ts");
  const dtsContent = fs.readFileSync(dtsPath, "utf-8");

  const staticMethods = [];
  const instanceMethods = [];
  const events = [];

  const menuMatch = dtsContent.match(/class\s+Menu\s+extends\s+[^{]*\{([\s\S]*?)\n\s*\}/);
  if (menuMatch) {
    const body = menuMatch[1];
    const expectedStatic = [
      "buildFromTemplate",
      "getApplicationMenu",
      "setApplicationMenu",
      "sendActionToFirstResponder",
    ];
    for (const sm of expectedStatic) {
      if (body.includes(`static ${sm}`)) {
        staticMethods.push(sm);
      }
    }

    const expectedInstance = [
      "append",
      "closePopup",
      "getMenuItemById",
      "insert",
      "popup",
    ];
    for (const im of expectedInstance) {
      if (new RegExp(`\\b${im}\\s*\\(`).test(body)) {
        instanceMethods.push(im);
      }
    }

    if (body.includes("'menu-will-show'")) events.push("menu-will-show");
    if (body.includes("'menu-will-close'")) events.push("menu-will-close");
  }

  const hasMenuClass = /class\s+Menu\s+extends\s+NodeEventEmitter/.test(dtsContent);
  const hasMenuItemClass = /class\s+MenuItem\s*\{/.test(dtsContent);
  const hasAllKeyMethods =
    staticMethods.includes("buildFromTemplate") &&
    staticMethods.includes("setApplicationMenu") &&
    staticMethods.includes("getApplicationMenu") &&
    instanceMethods.includes("append") &&
    instanceMethods.includes("insert") &&
    instanceMethods.includes("getMenuItemById") &&
    instanceMethods.includes("popup") &&
    instanceMethods.includes("closePopup");

  return {
    staticMethods,
    instanceMethods,
    events,
    hasMenuClass,
    hasMenuItemClass,
    hasAllKeyMethods,
  };
}

/**
 * In-memory MenuItem class matching Electron MenuItem API.
 */
class MenuItem {
  /**
   * @param {Record<string, any>} options
   */
  constructor(options = {}) {
    this.id = options.id !== undefined ? String(options.id) : undefined;
    this.label = options.label !== undefined ? String(options.label) : "";
    this.sublabel = options.sublabel !== undefined ? String(options.sublabel) : "";
    this.role = options.role !== undefined ? String(options.role) : undefined;
    this.accelerator = options.accelerator !== undefined ? String(options.accelerator) : undefined;
    this.type = options.type || (options.submenu ? "submenu" : "normal");
    this.checked = Boolean(options.checked);
    this.enabled = options.enabled !== undefined ? Boolean(options.enabled) : true;
    this.visible = options.visible !== undefined ? Boolean(options.visible) : true;
    this.click = typeof options.click === "function" ? options.click : undefined;

    if (options.submenu) {
      if (options.submenu instanceof Menu) {
        this.submenu = options.submenu;
      } else if (Array.isArray(options.submenu)) {
        this.submenu = Menu.buildFromTemplate(options.submenu);
      } else {
        this.submenu = undefined;
      }
    } else {
      this.submenu = undefined;
    }
  }

  /**
   * Trigger click handler.
   * @param {any} [event]
   * @param {any} [focusedWindow]
   * @param {any} [focusedWebContents]
   */
  performClick(event = {}, focusedWindow = null, focusedWebContents = null) {
    if (!this.enabled) return;
    if (this.type === "checkbox") {
      this.checked = !this.checked;
    }
    if (typeof this.click === "function") {
      this.click(this, focusedWindow, event);
    }
  }
}

/**
 * Global store for application menu.
 * @type {Menu|null}
 */
let currentAppMenu = null;

/**
 * In-memory Menu class matching Electron Menu API.
 */
class Menu extends EventEmitter {
  constructor() {
    super();
    /** @type {MenuItem[]} */
    this.items = [];
    this._isOpen = false;
  }

  /**
   * Appends menuItem to the menu.
   * @param {MenuItem|Record<string, any>} item
   */
  append(item) {
    const menuItem = item instanceof MenuItem ? item : new MenuItem(item);
    this.items.push(menuItem);
  }

  /**
   * Inserts menuItem at specific pos.
   * @param {number} pos
   * @param {MenuItem|Record<string, any>} item
   */
  insert(pos, item) {
    const menuItem = item instanceof MenuItem ? item : new MenuItem(item);
    const index = Math.max(0, Math.min(pos, this.items.length));
    this.items.splice(index, 0, menuItem);
  }

  /**
   * Finds a MenuItem by its unique id, searching recursively across submenus.
   * @param {string} id
   * @returns {MenuItem|null}
   */
  getMenuItemById(id) {
    const targetId = String(id);
    for (const item of this.items) {
      if (item.id === targetId) {
        return item;
      }
      if (item.submenu && item.submenu instanceof Menu) {
        const found = item.submenu.getMenuItemById(targetId);
        if (found) return found;
      }
    }
    return null;
  }

  /**
   * Opens popup menu and emits menu-will-show.
   * @param {Record<string, any>} [options]
   */
  popup(options = {}) {
    this._isOpen = true;
    this.emit("menu-will-show", { type: "menu-will-show", ...options });
  }

  /**
   * Closes popup menu and emits menu-will-close.
   * @param {any} [window]
   */
  closePopup(window = null) {
    if (this._isOpen) {
      this._isOpen = false;
      this.emit("menu-will-close", { type: "menu-will-close", window });
    }
  }

  /**
   * Builds a Menu from a template array.
   * @param {Array<MenuItem|Record<string, any>>} template
   * @returns {Menu}
   */
  static buildFromTemplate(template) {
    if (!Array.isArray(template)) {
      throw new TypeError("Menu.buildFromTemplate requires an array");
    }
    const menu = new Menu();
    for (const item of template) {
      menu.append(item);
    }
    return menu;
  }

  /**
   * Sets the global application menu.
   * @param {Menu|null} menu
   */
  static setApplicationMenu(menu) {
    if (menu !== null && !(menu instanceof Menu)) {
      throw new TypeError("Application menu must be an instance of Menu or null");
    }
    currentAppMenu = menu;
  }

  /**
   * Gets the current application menu.
   * @returns {Menu|null}
   */
  static getApplicationMenu() {
    return currentAppMenu;
  }

  /**
   * Emulates sending action to first responder (macOS).
   * @param {string} action
   */
  static sendActionToFirstResponder(action) {
    if (typeof action !== "string") {
      throw new TypeError("Action must be a string");
    }
  }
}

module.exports = {
  getMenuDeclarations,
  Menu,
  MenuItem,
};

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{
  "name": "sample-electron-menu",
  "version": "1.0.0",
  "description": "verify electron.Menu in pkg:npm/electron@33.4.11",
  "main": "index.js",
  "license": "MIT-0",
  "dependencies": {
    "electron": "33.4.11"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify electron.Menu in pkg:npm/electron@33.4.11",
  "kind": "HOW",
  "packages": [
    "pkg:npm/electron@33.4.11"
  ],
  "symbols": [
    "electron.Menu"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

"use strict";

const assert = require("node:assert");
const { getMenuDeclarations, Menu, MenuItem } = require("../index.js");

async function runContracts() {
  // Contract 1: electron type definitions declare Menu class with static methods buildFromTemplate, setApplicationMenu, getApplicationMenu and instance methods append, insert, getMenuItemById, popup, closePopup
  {
    const decl = getMenuDeclarations();
    assert.strictEqual(decl.hasMenuClass, true, "Menu class must be declared extending NodeEventEmitter");
    assert.strictEqual(decl.hasMenuItemClass, true, "MenuItem class must be declared");
    assert.strictEqual(decl.hasAllKeyMethods, true, "Menu must declare all static and instance methods");
    assert.ok(decl.staticMethods.includes("buildFromTemplate"), "Must include static buildFromTemplate");
    assert.ok(decl.staticMethods.includes("setApplicationMenu"), "Must include static setApplicationMenu");
    assert.ok(decl.staticMethods.includes("getApplicationMenu"), "Must include static getApplicationMenu");
    assert.ok(decl.instanceMethods.includes("append"), "Must include instance append");
    assert.ok(decl.instanceMethods.includes("insert"), "Must include instance insert");
    assert.ok(decl.instanceMethods.includes("getMenuItemById"), "Must include instance getMenuItemById");
    assert.ok(decl.instanceMethods.includes("popup"), "Must include instance popup");
    assert.ok(decl.instanceMethods.includes("closePopup"), "Must include instance closePopup");
    assert.ok(decl.events.includes("menu-will-show"), "Must declare menu-will-show event");
    assert.ok(decl.events.includes("menu-will-close"), "Must declare menu-will-close event");
  }

  // Contract 2: Menu buildFromTemplate constructs hierarchical menu structure supporting submenus, separators, checkboxes, and roles
  {
    let cutClicked = false;
    const template = [
      {
        label: "File",
        submenu: [
          { label: "New File", accelerator: "CmdOrCtrl+N" },
          { type: "separator" },
          { label: "Exit", role: "quit" },
        ],
      },
      {
        label: "Edit",
        submenu: [
          {
            id: "edit-cut",
            label: "Cut",
            role: "cut",
            click: () => {
              cutClicked = true;
            },
          },
          { id: "edit-copy", label: "Copy", role: "copy" },
        ],
      },
      {
        label: "View",
        submenu: [
          { id: "toggle-dark", label: "Dark Mode", type: "checkbox", checked: false },
        ],
      },
    ];

    const menu = Menu.buildFromTemplate(template);
    assert.strictEqual(menu.items.length, 3, "Top-level menu should have 3 items");
    assert.strictEqual(menu.items[0].label, "File");
    assert.ok(menu.items[0].submenu instanceof Menu, "File submenu must be a Menu instance");
    assert.strictEqual(menu.items[0].submenu.items.length, 3);
    assert.strictEqual(menu.items[0].submenu.items[1].type, "separator");

    // Test checkbox toggle behavior
    const darkItem = menu.getMenuItemById("toggle-dark");
    assert.ok(darkItem !== null, "Dark mode item must be found");
    assert.strictEqual(darkItem.checked, false);
    darkItem.performClick();
    assert.strictEqual(darkItem.checked, true, "Checkbox item must toggle checked state");

    // Test click handler execution
    const cutItem = menu.getMenuItemById("edit-cut");
    assert.ok(cutItem !== null, "Cut item must be found");
    cutItem.performClick();
    assert.strictEqual(cutClicked, true, "Cut click handler must be triggered");
  }

  // Contract 3: Menu instance methods append and insert add MenuItems at appropriate index positions and support lookup via getMenuItemById
  {
    const menu = new Menu();
    const item1 = new MenuItem({ id: "item-1", label: "First" });
    const item3 = new MenuItem({ id: "item-3", label: "Third" });
    const item2 = new MenuItem({ id: "item-2", label: "Second" });

    menu.append(item1);
    menu.append(item3);
    assert.strictEqual(menu.items.length, 2);

    // Insert at index 1
    menu.insert(1, item2);
    assert.strictEqual(menu.items.length, 3);
    assert.strictEqual(menu.items[0].id, "item-1");
    assert.strictEqual(menu.items[1].id, "item-2");
    assert.strictEqual(menu.items[2].id, "item-3");

    // Test lookup
    const found2 = menu.getMenuItemById("item-2");
    assert.strictEqual(found2, item2, "getMenuItemById must locate existing item");

    const notFound = menu.getMenuItemById("non-existent");
    assert.strictEqual(notFound, null, "getMenuItemById must return null for missing item");
  }

  // Contract 4: Menu manages global application menu state via setApplicationMenu and getApplicationMenu
  {
    // Initially or reset
    Menu.setApplicationMenu(null);
    assert.strictEqual(Menu.getApplicationMenu(), null);

    const appMenu = Menu.buildFromTemplate([
      { label: "App", submenu: [{ role: "about" }] },
    ]);
    Menu.setApplicationMenu(appMenu);
    assert.strictEqual(Menu.getApplicationMenu(), appMenu, "getApplicationMenu must return active Menu");

    // Reset back to null
    Menu.setApplicationMenu(null);
    assert.strictEqual(Menu.getApplicationMenu(), null);

    // Rejection on invalid input
    assert.throws(
      () => {
        Menu.setApplicationMenu({ invalid: true });
      },
      /Application menu must be an instance of Menu or null/,
      "setApplicationMenu must reject non-Menu objects"
    );
  }

  // Contract 5: Menu popup and closePopup trigger menu-will-show and menu-will-close lifecycle events on the Menu EventEmitter
  {
    const contextMenu = Menu.buildFromTemplate([
      { id: "ctx-inspect", label: "Inspect Element" },
      { id: "ctx-reload", label: "Reload Page" },
    ]);

    let showFired = 0;
    let closeFired = 0;
    let showPayload = null;
    let closePayload = null;

    contextMenu.on("menu-will-show", (evt) => {
      showFired++;
      showPayload = evt;
    });

    contextMenu.on("menu-will-close", (evt) => {
      closeFired++;
      closePayload = evt;
    });

    // Trigger popup
    contextMenu.popup({ x: 100, y: 200 });
    assert.strictEqual(showFired, 1, "menu-will-show event must fire on popup");
    assert.strictEqual(showPayload.x, 100);
    assert.strictEqual(showPayload.y, 200);
    assert.strictEqual(closeFired, 0, "menu-will-close must not fire yet");

    // Trigger close
    contextMenu.closePopup({ id: 1 });
    assert.strictEqual(closeFired, 1, "menu-will-close event must fire on closePopup");
    assert.deepStrictEqual(closePayload.window, { id: 1 });

    // Closing again when already closed should not fire extra events
    contextMenu.closePopup();
    assert.strictEqual(closeFired, 1, "closePopup on closed menu should not fire duplicate event");
  }

  console.log("All 5 contracts passed successfully.");
}

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