globals 14.0.0: worker

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 globals.worker in pkg:npm/globals@14.0.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/globals@14.0.0
Demonstrate these symbols/APIs:
  - globals.worker
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:sha256:97f5a783026ff832caafedf65320626147ee694a12657f723ed5307d3118acfe","constraints":{"executionContext":"node"},"contract":["globals exports a worker environment dictionary containing Web Worker global identifiers","globals.worker defines writable worker lifecycle and messaging identifiers including postMessage, onmessage, importScripts, and close","globals.worker defines read-only standard web APIs available in workers including Blob, fetch, crypto, and indexedDB","globals.worker defines dedicated worker scope identifiers and event handlers including self, onclose, and onerror"],"goal":"verify globals.worker in pkg:npm/globals@14.0.0","kind":"HOW","packages":["pkg:npm/globals@14.0.0"],"schemaVersion":1,"symbols":["globals.worker"]},"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/globals@14.0.0"],"schemaVersion":1,"subject":"pkg:npm/globals@14.0.0","symbols":["globals.worker"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-globals",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-globals",
      "version": "1.0.0",
      "dependencies": {
        "globals": "14.0.0"
      }
    },
    "node_modules/globals": {
      "version": "14.0.0",
      "resolved": "https://registry.npmjs.org/globals/-/globals-14.0.0.tgz",
      "integrity": "sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ==",
      "license": "MIT",
      "engines": {
        "node": ">=18"
      },
      "funding": {
        "url": "https://github.com/sponsors/sindresorhus"
      }
    }
  }
}

{
  "name": "sample-globals",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of globals.worker in globals@14.0.0",
  "dependencies": {
    "globals": "14.0.0"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify globals.worker in pkg:npm/globals@14.0.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/globals@14.0.0"
  ],
  "symbols": [
    "globals.worker"
  ],
  "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/strict');
const globals = require('globals');

// 1. globals exports a worker environment dictionary containing Web Worker global identifiers
assert.equal(typeof globals, 'object', 'globals should be an object');
assert.ok(globals !== null, 'globals should not be null');
assert.ok(globals.worker && typeof globals.worker === 'object', 'globals.worker should be an object');
assert.equal(typeof globals.worker.postMessage, 'boolean', 'globals.worker.postMessage should be boolean');
assert.equal(typeof globals.worker.self, 'boolean', 'globals.worker.self should be boolean');

// 2. globals.worker defines writable worker lifecycle and messaging identifiers including postMessage, onmessage, importScripts, and close
assert.equal(globals.worker.postMessage, true, 'postMessage should be writable');
assert.equal(globals.worker.onmessage, true, 'onmessage should be writable');
assert.equal(globals.worker.importScripts, true, 'importScripts should be writable');
assert.equal(globals.worker.close, true, 'close should be writable');

// 3. globals.worker defines read-only standard web APIs available in workers including Blob, fetch, crypto, and indexedDB
assert.equal(globals.worker.Blob, false, 'Blob should be read-only');
assert.equal(globals.worker.fetch, false, 'fetch should be read-only');
assert.equal(globals.worker.crypto, false, 'crypto should be read-only');
assert.equal(globals.worker.indexedDB, false, 'indexedDB should be read-only');
assert.equal(globals.worker.addEventListener, false, 'addEventListener should be read-only');
assert.equal(globals.worker.removeEventListener, false, 'removeEventListener should be read-only');
assert.equal(globals.worker.WorkerGlobalScope, false, 'WorkerGlobalScope should be read-only');

// 4. globals.worker defines dedicated worker scope identifiers and event handlers including self, onclose, and onerror
assert.equal(globals.worker.self, true, 'self should be writable');
assert.equal(globals.worker.onclose, true, 'onclose should be writable');
assert.equal(globals.worker.onerror, true, 'onerror should be writable');
assert.equal(globals.worker.onlanguagechange, true, 'onlanguagechange should be writable');
assert.equal(globals.worker.onoffline, true, 'onoffline should be writable');
assert.equal(globals.worker.ononline, true, 'ononline should be writable');

console.log('Contract test passed.');