tinypool 1.1.1: run

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 Tinypool.run in pkg:npm/tinypool@1.1.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/tinypool@1.1.1
Demonstrate these symbols/APIs:
  - Tinypool.run

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:sha256:691f3b5e13b3c47e3feb6d1c247a316cf3c8edcae7c51a92822bb3b53d177580","contract":["Tinypool.run executes default worker export with task payload","Tinypool.run executes named worker export specified via options.name","Tinypool.run supports executing tasks concurrently","Tinypool.run accepts worker filename in run options"],"goal":"verify Tinypool.run in pkg:npm/tinypool@1.1.1","kind":"HOW","packages":["pkg:npm/tinypool@1.1.1"],"schemaVersion":1,"symbols":["Tinypool.run"]},"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/tinypool@1.1.1"],"schemaVersion":1,"subject":"pkg:npm/tinypool@1.1.1","symbols":["Tinypool.run"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-tinypool-run",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-tinypool-run",
      "version": "1.0.0",
      "dependencies": {
        "tinypool": "1.1.1"
      }
    },
    "node_modules/tinypool": {
      "version": "1.1.1",
      "resolved": "https://registry.npmjs.org/tinypool/-/tinypool-1.1.1.tgz",
      "integrity": "sha512-Zba82s87IFq9A9XmjiX5uZA/ARWDrB03OHlq+Vw1fSdt0I+4/Kutwy8BP4Y/y/aORMo61FQ0vIb5j44vSo5Pkg==",
      "license": "MIT",
      "engines": {
        "node": "^18.0.0 || >=20.0.0"
      }
    }
  }
}

{
  "name": "sample-tinypool-run",
  "version": "1.0.0",
  "type": "module",
  "dependencies": {
    "tinypool": "1.1.1"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify Tinypool.run in pkg:npm/tinypool@1.1.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/tinypool@1.1.1"
  ],
  "symbols": [
    "Tinypool.run"
  ]
}

import assert from 'node:assert/strict';
import { fileURLToPath } from 'node:url';
import { Tinypool } from 'tinypool';

const workerPath = fileURLToPath(new URL('./worker.mjs', import.meta.url));

// 1. Run default worker export with task data
{
  const pool = new Tinypool({
    filename: workerPath,
    minThreads: 1,
    maxThreads: 2,
  });
  try {
    const result = await pool.run({ a: 10, b: 20 });
    assert.equal(result, 30);
  } finally {
    await pool.destroy();
  }
}

// 2. Run named export using run options
{
  const pool = new Tinypool({
    filename: workerPath,
    minThreads: 1,
    maxThreads: 2,
  });
  try {
    const result = await pool.run({ a: 6, b: 7 }, { name: 'multiply' });
    assert.equal(result, 42);
  } finally {
    await pool.destroy();
  }
}

// 3. Run tasks concurrently across the pool
{
  const pool = new Tinypool({
    filename: workerPath,
    minThreads: 2,
    maxThreads: 4,
  });
  try {
    const results = await Promise.all([
      pool.run({ a: 1, b: 2 }),
      pool.run({ a: 3, b: 4 }),
      pool.run({ a: 5, b: 6 }, { name: 'multiply' }),
    ]);
    assert.deepEqual(results, [3, 7, 30]);
  } finally {
    await pool.destroy();
  }
}

// 4. Run task specifying filename in run options
{
  const pool = new Tinypool();
  try {
    const result = await pool.run({ a: 100, b: 200 }, { filename: workerPath });
    assert.equal(result, 300);
  } finally {
    await pool.destroy();
  }
}

export default function (data) {
  return data.a + data.b;
}

export function multiply(data) {
  return data.a * data.b;
}