minipass 5.0.0

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/minipass@5.0.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/minipass@5.0.0
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:sha256:2dc073f2982f725018d0b6c49169050fa5288e39a9d58bccc333c7569f3b2544","constraints":{"executionContext":"node"},"contract":["Minipass emits data events synchronously as chunks are written","Minipass.concat() resolves to all data written to the stream","Minipass.pipe() forwards written chunks to destination stream","Minipass buffers written chunks until read() or event listener is attached"],"goal":"verify pkg:npm/minipass@5.0.0","kind":"HOW","packages":["pkg:npm/minipass@5.0.0"],"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/minipass@5.0.0"],"schemaVersion":1,"subject":"pkg:npm/minipass@5.0.0","verifierAdapter":"node-typescript@1"}

'use strict';

const { Minipass } = require('minipass');

function createStream(options = {}) {
  return new Minipass(options);
}

async function collectStream(stream) {
  return await stream.concat();
}

function pipeStream(source, destination) {
  return source.pipe(destination);
}

module.exports = {
  Minipass,
  createStream,
  collectStream,
  pipeStream,
};

{
  "name": "sample-2707700650",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-2707700650",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "minipass": "5.0.0"
      }
    },
    "node_modules/minipass": {
      "version": "5.0.0",
      "resolved": "https://registry.npmjs.org/minipass/-/minipass-5.0.0.tgz",
      "integrity": "sha512-3FnjYuehv9k6ovOEbyOswadCDPX1piCfhV8ncmYtHOjuPwylVWsghTLo7rabjC3Rx5xD4HDx8Wm1xnMF7S5qFQ==",
      "license": "ISC",
      "engines": {
        "node": ">=8"
      }
    }
  }
}

{
  "name": "sample-2707700650",
  "version": "1.0.0",
  "description": "Minimal sample verifying minipass@5.0.0",
  "main": "index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "keywords": [],
  "author": "",
  "license": "MIT-0",
  "dependencies": {
    "minipass": "5.0.0"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/minipass@5.0.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/minipass@5.0.0"
  ],
  "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('assert');
const { Minipass, createStream, collectStream, pipeStream } = require('../index.js');

async function testMinipassDirect() {
  const stream = new Minipass({ encoding: 'utf8' });
  const chunks = [];
  stream.on('data', (chunk) => {
    chunks.push(chunk);
  });

  stream.write('alpha-');
  stream.write('beta');
  stream.end();

  assert.strictEqual(chunks.join(''), 'alpha-beta', 'stream emits all written chunks');
}

async function testMinipassConcat() {
  const stream = createStream({ encoding: 'utf8' });
  stream.write('hello ');
  stream.write('world');
  stream.end();

  const result = await collectStream(stream);
  assert.strictEqual(result, 'hello world', 'collectStream resolves with concatenated text');
}

async function testMinipassPipe() {
  const src = createStream({ encoding: 'utf8' });
  const dst = createStream({ encoding: 'utf8' });

  pipeStream(src, dst);

  src.write('piped-content');
  src.end();

  const result = await collectStream(dst);
  assert.strictEqual(result, 'piped-content', 'destination receives piped content');
}

async function testMinipassBuffering() {
  const stream = new Minipass({ encoding: 'utf8' });
  stream.write('buffered-chunk');
  stream.end();

  const chunk = stream.read();
  assert.strictEqual(chunk, 'buffered-chunk', 'read() retrieves buffered chunk');
  assert.strictEqual(stream.read(), null, 'subsequent read returns null when empty');
}

async function run() {
  await testMinipassDirect();
  await testMinipassConcat();
  await testMinipassPipe();
  await testMinipassBuffering();
  console.log('Contract tests passed successfully.');
}

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