path-exists 4.0.0: sync

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 path-exists.sync in pkg:npm/path-exists@4.0.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/path-exists@4.0.0
Demonstrate these symbols/APIs:
  - path-exists.sync
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - 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:sha256:5b644c5e1628155b11b2f1c33dca3420d211db62a83c9226d2e78e24b8cc75fb","constraints":{"executionContext":"node"},"contract":["pathExists.sync returns true for existing file paths","pathExists.sync returns false for non-existing file paths"],"goal":"verify path-exists.sync in pkg:npm/path-exists@4.0.0","kind":"HOW","packages":["pkg:npm/path-exists@4.0.0"],"schemaVersion":1,"symbols":["path-exists.sync"]},"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","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/path-exists@4.0.0"],"schemaVersion":1,"subject":"pkg:npm/path-exists@4.0.0","symbols":["path-exists.sync"],"verifierAdapter":"node-typescript@1"}

const pathExists = require('path-exists');

function checkFileExistsSync(filepath) {
  return pathExists.sync(filepath);
}

module.exports = {
  checkFileExistsSync
};

{
  "name": "sample-path-exists-sync",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-path-exists-sync",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "path-exists": "4.0.0"
      }
    },
    "node_modules/path-exists": {
      "version": "4.0.0",
      "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
      "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
      "license": "MIT",
      "engines": {
        "node": ">=8"
      }
    }
  }
}

{
  "name": "sample-path-exists-sync",
  "version": "1.0.0",
  "private": true,
  "type": "commonjs",
  "main": "index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "path-exists": "4.0.0"
  },
  "license": "MIT-0"
}

{
  "schemaVersion": 1,
  "goal": "verify path-exists.sync in pkg:npm/path-exists@4.0.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/path-exists@4.0.0"
  ],
  "symbols": [
    "path-exists.sync"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "runtime": "node@22.23.2"
  }
}

const assert = require('assert');
const path = require('path');
const pathExists = require('path-exists');
const { checkFileExistsSync } = require('../index.js');

// Verify that pathExists.sync is available and callable
assert.strictEqual(typeof pathExists.sync, 'function', 'pathExists.sync should be a function');

// Verify that existing file returns true
const existingFilePath = __filename;
assert.strictEqual(pathExists.sync(existingFilePath), true, 'pathExists.sync should return true for existing file');
assert.strictEqual(checkFileExistsSync(existingFilePath), true, 'checkFileExistsSync should return true for existing file');

// Verify that non-existent file returns false
const nonExistentFilePath = path.join(__dirname, 'non-existent-test-file-987654.tmp');
assert.strictEqual(pathExists.sync(nonExistentFilePath), false, 'pathExists.sync should return false for non-existing file');
assert.strictEqual(checkFileExistsSync(nonExistentFilePath), false, 'checkFileExistsSync should return false for non-existing file');

console.log('Contract test passed: path-exists.sync verified.');