has-tostringtag 1.0.2

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/has-tostringtag@1.0.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/has-tostringtag@1.0.2
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:cb32d193dd641cde23cfaebe7f2d5f50072a08de3c987bf1ea29977745a02bf4","constraints":{"executionContext":"node"},"contract":["hasToStringTag() returns true in Node.js 22 environment with Symbol.toStringTag support","hasToStringTagShams() returns true indicating presence of Symbol.toStringTag","Symbol.toStringTag customizes Object.prototype.toString tag when supported"],"goal":"verify pkg:npm/has-tostringtag@1.0.2","kind":"HOW","packages":["pkg:npm/has-tostringtag@1.0.2"],"schemaVersion":1},"contractCommand":["node","test/contract.cjs"],"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/has-tostringtag@1.0.2"],"schemaVersion":1,"subject":"pkg:npm/has-tostringtag@1.0.2","verifierAdapter":"node-typescript@1"}

'use strict';

const hasToStringTag = require('has-tostringtag');
const hasToStringTagShams = require('has-tostringtag/shams');

function checkToStringTagSupport() {
  return {
    hasToStringTag: hasToStringTag(),
    hasToStringTagShams: hasToStringTagShams()
  };
}

module.exports = {
  checkToStringTagSupport
};

{
  "name": "sample-has-tostringtag",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-has-tostringtag",
      "version": "1.0.0",
      "dependencies": {
        "has-tostringtag": "1.0.2"
      }
    },
    "node_modules/has-symbols": {
      "version": "1.1.0",
      "resolved": "https://registry.npmjs.org/has-symbols/-/has-symbols-1.1.0.tgz",
      "integrity": "sha512-1cDNdwJ2Jaohmb3sg4OmKaMBwuC48sYni5HUw2DvsC8LjGTLK9h+eb1X6RyuOHe4hT0ULCW68iomhjUoKUqlPQ==",
      "license": "MIT",
      "engines": {
        "node": ">= 0.4"
      },
      "funding": {
        "url": "https://github.com/sponsors/ljharb"
      }
    },
    "node_modules/has-tostringtag": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/has-tostringtag/-/has-tostringtag-1.0.2.tgz",
      "integrity": "sha512-NqADB8VjPFLM2V0VvHUewwwsw0ZWBaIdgo+ieHtK3hasLz4qeCRjYcqfB6AQrBggRKppKF8L52/VqdVsO47Dlw==",
      "license": "MIT",
      "dependencies": {
        "has-symbols": "^1.0.3"
      },
      "engines": {
        "node": ">= 0.4"
      },
      "funding": {
        "url": "https://github.com/sponsors/ljharb"
      }
    }
  }
}

{
  "name": "sample-has-tostringtag",
  "version": "1.0.0",
  "private": true,
  "description": "Demonstrate has-tostringtag Symbol.toStringTag detection",
  "dependencies": {
    "has-tostringtag": "1.0.2"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/has-tostringtag@1.0.2",
  "kind": "HOW",
  "packages": [
    "pkg:npm/has-tostringtag@1.0.2"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "runtime": "node@22.23.2"
  }
}

'use strict';

const assert = require('node:assert/strict');
const hasToStringTag = require('has-tostringtag');
const hasToStringTagShams = require('has-tostringtag/shams');
const { checkToStringTagSupport } = require('../index.cjs');

assert.equal(typeof hasToStringTag, 'function', 'hasToStringTag must be a function');
assert.equal(typeof hasToStringTagShams, 'function', 'hasToStringTagShams must be a function');

const hasNative = hasToStringTag();
assert.equal(typeof hasNative, 'boolean', 'hasToStringTag() must return a boolean');
assert.equal(hasNative, true, 'hasToStringTag() should return true in Node.js');

const hasShams = hasToStringTagShams();
assert.equal(typeof hasShams, 'boolean', 'hasToStringTagShams() must return a boolean');
assert.equal(hasShams, true, 'hasToStringTagShams() should return true');

const support = checkToStringTagSupport();
assert.deepEqual(support, {
  hasToStringTag: true,
  hasToStringTagShams: true
});

if (hasNative) {
  const taggedObject = {
    [Symbol.toStringTag]: 'SampleTag'
  };
  assert.equal(Object.prototype.toString.call(taggedObject), '[object SampleTag]');
}

console.log('Contract test passed.');