emoji-regex 8.0.0

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/emoji-regex@8.0.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/emoji-regex@8.0.0

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:e374ef6a1f806277185f4f7c35763b09226559b3bb547f3945593f8009f9dd2a","contract":["emojiRegex returns a RegExp instance configured for matching emoji","matches emoji characters and sequences in text","returns false when testing strings containing only non-emoji text"],"goal":"verify pkg:npm/emoji-regex@8.0.0","kind":"HOW","packages":["pkg:npm/emoji-regex@8.0.0"],"schemaVersion":1},"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/emoji-regex@8.0.0"],"schemaVersion":1,"subject":"pkg:npm/emoji-regex@8.0.0","verifierAdapter":"node-typescript@1"}

{
  "name": "sample-emoji-regex",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-emoji-regex",
      "version": "1.0.0",
      "dependencies": {
        "emoji-regex": "8.0.0"
      }
    },
    "node_modules/emoji-regex": {
      "version": "8.0.0",
      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
      "integrity": "sha512-MSjYzcWNOA0ewAHpz0MxpYFvwg6yjy1NG3xteoqz644VCo/RPgnr1/GGt+ic3iJTzQ8Eu3TdM14SawnVUmGE6A==",
      "license": "MIT"
    }
  }
}

{
  "name": "sample-emoji-regex",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "dependencies": {
    "emoji-regex": "8.0.0"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/emoji-regex@8.0.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/emoji-regex@8.0.0"
  ]
}

import assert from 'node:assert/strict';
import emojiRegex from 'emoji-regex';

// emojiRegex() returns a RegExp instance configured for matching emoji
const regex = emojiRegex();
assert(regex instanceof RegExp, 'emojiRegex() should return a RegExp instance');
assert(regex.global, 'emojiRegex should have global flag set');

// Matches emoji characters and sequences in text
const text = 'Hello 🌍! Here is a rocket 🚀 and a coder 👩‍💻.';
const matches = Array.from(text.matchAll(emojiRegex()), m => m[0]);
assert.deepEqual(matches, ['🌍', '🚀', '👩‍💻']);

// Tests string containing emoji
assert.equal(emojiRegex().test('🎉 Party'), true);

// Tests string without emoji
assert.equal(emojiRegex().test('No emojis here, just plain text 123!'), false);

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