esrecurse 4.3.0: version

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 esrecurse.version in pkg:npm/esrecurse@4.3.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/esrecurse@4.3.0
Demonstrate these symbols/APIs:
  - esrecurse.version

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:sha256:625006dfc4d63da44c05b229bc89b7aa6e44361498cdc3c7e9765f1107b4792c","contract":["assert esrecurse.version is a string","assert esrecurse.version matches semver pattern","assert esrecurse.version is 4.3.0"],"goal":"verify esrecurse.version in pkg:npm/esrecurse@4.3.0","kind":"HOW","packages":["pkg:npm/esrecurse@4.3.0"],"schemaVersion":1,"symbols":["esrecurse.version"]},"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/esrecurse@4.3.0"],"schemaVersion":1,"subject":"pkg:npm/esrecurse@4.3.0","symbols":["esrecurse.version"],"verifierAdapter":"node-typescript@1"}

{
  "name": "csx-sample-esrecurse-version",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "csx-sample-esrecurse-version",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "esrecurse": "4.3.0"
      }
    },
    "node_modules/esrecurse": {
      "version": "4.3.0",
      "resolved": "https://registry.npmjs.org/esrecurse/-/esrecurse-4.3.0.tgz",
      "integrity": "sha512-KmfKL3b6G+RXvP8N1vr3Tq1kL/oCFgn2NYXEtqP8/L3pKapUA4G8cFVaoF3SU323CD4XypR/ffioHmkti6/Tag==",
      "license": "BSD-2-Clause",
      "dependencies": {
        "estraverse": "^5.2.0"
      },
      "engines": {
        "node": ">=4.0"
      }
    },
    "node_modules/estraverse": {
      "version": "5.3.0",
      "resolved": "https://registry.npmjs.org/estraverse/-/estraverse-5.3.0.tgz",
      "integrity": "sha512-MMdARuVEQziNTeJD8DgMqmhwR11BRQ/cBP+pLtYdSTnf3MIO8fFeiINEbX36ZdNlfU/7A9f3gUw49B3oQsvwBA==",
      "license": "BSD-2-Clause",
      "engines": {
        "node": ">=4.0"
      }
    }
  }
}

{
  "name": "csx-sample-esrecurse-version",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification for esrecurse.version",
  "main": "test/contract.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "esrecurse": "4.3.0"
  },
  "license": "MIT-0"
}

{
  "schemaVersion": 1,
  "goal": "verify esrecurse.version in pkg:npm/esrecurse@4.3.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/esrecurse@4.3.0"
  ],
  "symbols": [
    "esrecurse.version"
  ]
}

const assert = require('node:assert/strict');
const esrecurse = require('esrecurse');

// 1. esrecurse.version is a string
assert.strictEqual(typeof esrecurse.version, 'string');

// 2. esrecurse.version matches semver pattern
assert.match(esrecurse.version, /^\d+\.\d+\.\d+$/);

// 3. esrecurse.version is 4.3.0
assert.strictEqual(esrecurse.version, '4.3.0');

console.log('All esrecurse.version contract assertions passed.');