p-try 2.2.0: pTry

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/p-try@2.2.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/p-try@2.2.0
Demonstrate these symbols/APIs:
  - pTry

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:c2a999a919ceb407dc99d6f9c26e3cfe327479be068321327027e09c7b3ff656","contract":["assert synchronous return value resolves in a promise","assert asynchronous promise-returning function resolves correctly","assert arguments are forwarded to the target function","assert synchronous exceptions are converted to promise rejections","assert asynchronous rejections are propagated as rejected promises","assert pTry and pTry.default interop export is a callable function"],"goal":"verify pkg:npm/p-try@2.2.0","kind":"HOW","packages":["pkg:npm/p-try@2.2.0"],"schemaVersion":1,"symbols":["pTry"]},"contractCommand":["node","test/contract.mjs"],"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/p-try@2.2.0"],"schemaVersion":1,"subject":"pkg:npm/p-try@2.2.0","symbols":["pTry"],"verifierAdapter":"node-typescript@1"}

const pTry = require('p-try');

function runSync(fn, ...args) {
  return pTry(fn, ...args);
}

function runAsync(fn, ...args) {
  return pTry(fn, ...args);
}

function runSafe(fn, ...args) {
  return pTry(fn, ...args);
}

module.exports = {
  pTry,
  runSync,
  runAsync,
  runSafe,
};

{
  "name": "sample-p-try",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-p-try",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "p-try": "2.2.0"
      }
    },
    "node_modules/p-try": {
      "version": "2.2.0",
      "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
      "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
      "license": "MIT",
      "engines": {
        "node": ">=6"
      }
    }
  }
}

{
  "name": "sample-p-try",
  "version": "1.0.0",
  "description": "Minimal clean-room sample verifying p-try promise chain execution",
  "main": "index.js",
  "license": "MIT-0",
  "dependencies": {
    "p-try": "2.2.0"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/p-try@2.2.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/p-try@2.2.0"
  ],
  "symbols": [
    "pTry"
  ]
}

import assert from 'node:assert';
import pTry from 'p-try';
import { runSync, runAsync, runSafe } from '../index.js';

// 1. Synchronous return value is wrapped in a resolved promise
const syncVal = await pTry(() => 'sync-result');
assert.strictEqual(syncVal, 'sync-result', 'pTry must resolve to the synchronous return value');

const helperSyncVal = await runSync(() => 42);
assert.strictEqual(helperSyncVal, 42, 'runSync must return resolved promise with value');

// 2. Asynchronous promise-returning function resolves correctly
const asyncVal = await pTry(async () => 'async-result');
assert.strictEqual(asyncVal, 'async-result', 'pTry must resolve to the promise value');

const helperAsyncVal = await runAsync(async () => ({ status: 'ok' }));
assert.deepStrictEqual(helperAsyncVal, { status: 'ok' }, 'runAsync must resolve with async object');

// 3. Arguments are forwarded to the wrapped function
const sumResult = await pTry((a, b, c) => a + b + c, 10, 20, 30);
assert.strictEqual(sumResult, 60, 'pTry must pass extra arguments to the target function');

const helperSum = await runSync((x, y) => x * y, 6, 7);
assert.strictEqual(helperSum, 42, 'runSync must pass arguments properly');

// 4. Synchronous exceptions are caught and converted to promise rejections
await assert.rejects(
  pTry(() => {
    throw new Error('sync failure');
  }),
  {
    name: 'Error',
    message: 'sync failure',
  },
  'pTry must convert synchronous throws into rejected promises'
);

await assert.rejects(
  runSafe(() => {
    throw new TypeError('invalid argument type');
  }),
  {
    name: 'TypeError',
    message: 'invalid argument type',
  },
  'runSafe must reject with synchronous TypeError'
);

// 5. Asynchronous rejections are propagated as rejected promises
await assert.rejects(
  pTry(async () => {
    throw new Error('async failure');
  }),
  {
    name: 'Error',
    message: 'async failure',
  },
  'pTry must reject when async function throws'
);

// 6. Default export and property compatibility
assert.strictEqual(typeof pTry, 'function', 'pTry must be a function');
assert.strictEqual(pTry.default, pTry, 'pTry.default must point to pTry for CJS/ESM interop');

console.log('All p-try contract assertions passed.');