@types/node 22.20.2: types

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 @types/node.types in pkg:npm/%40types/node@22.20.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40types/node@22.20.2
Demonstrate these symbols/APIs:
  - @types/node.types

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:c1e6bf29580e97f9ba255da04c7797f9201f8ef595c1c6d7806587196e8252a6","contract":["@types/node package.json defines types entry point index.d.ts and typeScriptVersion 5.6","@types/node package.json defines typesVersions mapping for TypeScript versions \u003c=5.6","@types/node globals.d.ts declares global NodeJS namespace with CallSite, ErrnoException, and ReadableStream interfaces","@types/node stream.d.ts declares Stream class, StreamOptions, and ReadableOptions interfaces in module stream","@types/node crypto.d.ts declares Certificate class and Cipher, Decipher, and Hmac interfaces in module crypto","@types/node util.d.ts declares InspectOptions, CustomPromisify, and inspect namespace in module util"],"goal":"verify @types/node.types in pkg:npm/%40types/node@22.20.2","kind":"HOW","packages":["pkg:npm/%40types/node@22.20.2"],"schemaVersion":1,"symbols":["@types/node.types"]},"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/%40types/node@22.20.2"],"schemaVersion":1,"subject":"pkg:npm/%40types/node@22.20.2","symbols":["@types/node.types"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-types-node-types",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-types-node-types",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "@types/node": "22.20.2"
      }
    },
    "node_modules/@types/node": {
      "version": "22.20.2",
      "resolved": "https://registry.npmjs.org/@types/node/-/node-22.20.2.tgz",
      "integrity": "sha512-xlvWf4Vs9n1PEVYwP1n4vvG07M6y8WgvJ2t0vbrWTmijsIHp1cS+uJ2kMIRdY3nHZK0nCYKrPeD171+SzF4/zw==",
      "license": "MIT",
      "dependencies": {
        "undici-types": "~6.21.0"
      }
    },
    "node_modules/undici-types": {
      "version": "6.21.0",
      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
      "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
      "license": "MIT"
    }
  }
}

{
  "name": "sample-types-node-types",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "license": "MIT-0",
  "dependencies": {
    "@types/node": "22.20.2"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify @types/node.types in pkg:npm/%40types/node@22.20.2",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40types/node@22.20.2"
  ],
  "symbols": [
    "@types/node.types"
  ]
}

import assert from 'node:assert/strict';
import fs from 'node:fs';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);

// 1. @types/node package.json defines types entry point index.d.ts and typeScriptVersion 5.6
const pkgJson = require('@types/node/package.json');
assert.equal(pkgJson.name, '@types/node');
assert.equal(pkgJson.version, '22.20.2');
assert.equal(pkgJson.types, 'index.d.ts');
assert.equal(pkgJson.typeScriptVersion, '5.6');

// 2. @types/node package.json defines typesVersions mapping for TypeScript versions <=5.6
assert.ok(pkgJson.typesVersions);
assert.ok(pkgJson.typesVersions['<=5.6']);
assert.deepEqual(pkgJson.typesVersions['<=5.6']['*'], ['ts5.6/*']);

// 3. @types/node globals.d.ts declares global NodeJS namespace with CallSite, ErrnoException, and ReadableStream interfaces
const globalsDtsPath = require.resolve('@types/node/globals.d.ts');
assert.ok(fs.existsSync(globalsDtsPath));
const globalsDtsContent = fs.readFileSync(globalsDtsPath, 'utf8');

assert.ok(globalsDtsContent.includes('declare namespace NodeJS {'));
assert.ok(globalsDtsContent.includes('interface CallSite {'));
assert.ok(globalsDtsContent.includes('interface ErrnoException extends Error {'));
assert.ok(globalsDtsContent.includes('interface ReadableStream extends EventEmitter {'));

// 4. @types/node stream.d.ts declares Stream class, StreamOptions, and ReadableOptions interfaces in module stream
const streamDtsPath = require.resolve('@types/node/stream.d.ts');
assert.ok(fs.existsSync(streamDtsPath));
const streamDtsContent = fs.readFileSync(streamDtsPath, 'utf8');

assert.ok(streamDtsContent.includes('declare module "stream" {'));
assert.ok(streamDtsContent.includes('class Stream extends EventEmitter {'));
assert.ok(streamDtsContent.includes('interface StreamOptions<T extends Stream> extends Abortable {'));
assert.ok(streamDtsContent.includes('interface ReadableOptions<T extends Readable = Readable> extends StreamOptions<T> {'));

// 5. @types/node crypto.d.ts declares Certificate class and Cipher, Decipher, and Hmac interfaces in module crypto
const cryptoDtsPath = require.resolve('@types/node/crypto.d.ts');
assert.ok(fs.existsSync(cryptoDtsPath));
const cryptoDtsContent = fs.readFileSync(cryptoDtsPath, 'utf8');

assert.ok(cryptoDtsContent.includes('declare module "crypto" {'));
assert.ok(cryptoDtsContent.includes('class Certificate {'));
assert.ok(cryptoDtsContent.includes('class Cipher extends stream.Transform {'));
assert.ok(cryptoDtsContent.includes('class Decipher extends stream.Transform {'));
assert.ok(cryptoDtsContent.includes('class Hmac extends stream.Transform {'));

// 6. @types/node util.d.ts declares InspectOptions, CustomPromisify, and inspect namespace in module util
const utilDtsPath = require.resolve('@types/node/util.d.ts');
assert.ok(fs.existsSync(utilDtsPath));
const utilDtsContent = fs.readFileSync(utilDtsPath, 'utf8');

assert.ok(utilDtsContent.includes('declare module "util" {'));
assert.ok(utilDtsContent.includes('export interface InspectOptions {'));
assert.ok(utilDtsContent.includes('namespace inspect {'));
assert.ok(utilDtsContent.includes('type CustomPromisify<TCustom extends Function> ='));

console.log('All contract tests passed.');