unicode-canonical-property-names-ecmascript 2.0.1: verify canonical ECMAScript Unicode property names

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 canonical ECMAScript Unicode property names
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/unicode-canonical-property-names-ecmascript@2.0.1
Demonstrate these symbols/APIs:
  - unicode-canonical-property-names-ecmascript

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:sha256:61ce3795c774c990981cffd8f133a0f0b4c0cc81d5136fd6c402aadd1128f4dc","contract":["unicode-canonical-property-names-ecmascript is an instance of Set","unicode-canonical-property-names-ecmascript contains non-binary property names General_Category, Script, and Script_Extensions","unicode-canonical-property-names-ecmascript contains binary property names such as Alphabetic, ASCII, ID_Start, and White_Space","unicode-canonical-property-names-ecmascript returns false for property aliases and unknown names","unicode-canonical-property-names-ecmascript contains exactly 56 unique canonical property names","unicode-canonical-property-names-ecmascript is iterable and all elements are non-empty strings"],"goal":"verify canonical ECMAScript Unicode property names","kind":"HOW","packages":["pkg:npm/unicode-canonical-property-names-ecmascript@2.0.1"],"schemaVersion":1,"symbols":["unicode-canonical-property-names-ecmascript"]},"contractCommand":["node","test/contract.js"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","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/unicode-canonical-property-names-ecmascript@2.0.1"],"schemaVersion":1,"subject":"pkg:npm/unicode-canonical-property-names-ecmascript@2.0.1","symbols":["unicode-canonical-property-names-ecmascript"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-unicode-canonical-property-names-ecmascript",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-unicode-canonical-property-names-ecmascript",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "unicode-canonical-property-names-ecmascript": "2.0.1"
      }
    },
    "node_modules/unicode-canonical-property-names-ecmascript": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/unicode-canonical-property-names-ecmascript/-/unicode-canonical-property-names-ecmascript-2.0.1.tgz",
      "integrity": "sha512-dA8WbNeb2a6oQzAQ55YlT5vQAWGV9WXOsi3SskE3bcCdM0P4SDd+24zS/OCacdRq5BkdsRj9q3Pg6YyQoxIGqg==",
      "license": "MIT",
      "engines": {
        "node": ">=4"
      }
    }
  }
}

{
  "name": "sample-unicode-canonical-property-names-ecmascript",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification sample for unicode-canonical-property-names-ecmascript",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "unicode-canonical-property-names-ecmascript": "2.0.1"
  },
  "license": "MIT-0"
}

{
  "schemaVersion": 1,
  "goal": "verify canonical ECMAScript Unicode property names",
  "kind": "HOW",
  "packages": [
    "pkg:npm/unicode-canonical-property-names-ecmascript@2.0.1"
  ],
  "symbols": [
    "unicode-canonical-property-names-ecmascript"
  ]
}

'use strict';

const canonicalProperties = require('unicode-canonical-property-names-ecmascript');

/**
 * Check if a property name is a canonical ECMAScript Unicode property name.
 * @param {string} propertyName
 * @returns {boolean}
 */
function isCanonicalPropertyName(propertyName) {
  if (typeof propertyName !== 'string') {
    return false;
  }
  return canonicalProperties.has(propertyName);
}

/**
 * Get all canonical ECMAScript Unicode property names as an array.
 * @returns {string[]}
 */
function getCanonicalPropertyNames() {
  return Array.from(canonicalProperties);
}

module.exports = {
  canonicalProperties,
  isCanonicalPropertyName,
  getCanonicalPropertyNames
};

'use strict';

const assert = require('assert');
const canonicalProperties = require('unicode-canonical-property-names-ecmascript');
const { isCanonicalPropertyName, getCanonicalPropertyNames } = require('../src/index.js');

// 1. unicode-canonical-property-names-ecmascript is an instance of Set
{
  assert.ok(canonicalProperties instanceof Set);
  assert.strictEqual(typeof canonicalProperties.has, 'function');
  assert.strictEqual(typeof canonicalProperties.size, 'number');
}

// 2. unicode-canonical-property-names-ecmascript contains non-binary property names General_Category, Script, and Script_Extensions
{
  const nonBinaryProps = ['General_Category', 'Script', 'Script_Extensions'];
  for (const prop of nonBinaryProps) {
    assert.strictEqual(canonicalProperties.has(prop), true, `Expected ${prop} to be present`);
    assert.strictEqual(isCanonicalPropertyName(prop), true);
  }
}

// 3. unicode-canonical-property-names-ecmascript contains binary property names such as Alphabetic, ASCII, ID_Start, and White_Space
{
  const binaryProps = [
    'Alphabetic',
    'Any',
    'ASCII',
    'ASCII_Hex_Digit',
    'Assigned',
    'Bidi_Control',
    'Bidi_Mirrored',
    'Case_Ignorable',
    'Cased',
    'Changes_When_Casefolded',
    'Changes_When_Casemapped',
    'Changes_When_Lowercased',
    'Changes_When_NFKC_Casefolded',
    'Changes_When_Titlecased',
    'Changes_When_Uppercased',
    'Dash',
    'Default_Ignorable_Code_Point',
    'Deprecated',
    'Diacritic',
    'Emoji',
    'Emoji_Component',
    'Emoji_Modifier',
    'Emoji_Modifier_Base',
    'Emoji_Presentation',
    'Extended_Pictographic',
    'Extender',
    'Grapheme_Base',
    'Grapheme_Extend',
    'Hex_Digit',
    'ID_Continue',
    'ID_Start',
    'Ideographic',
    'IDS_Binary_Operator',
    'IDS_Trinary_Operator',
    'Join_Control',
    'Logical_Order_Exception',
    'Lowercase',
    'Math',
    'Noncharacter_Code_Point',
    'Pattern_Syntax',
    'Pattern_White_Space',
    'Quotation_Mark',
    'Radical',
    'Regional_Indicator',
    'Sentence_Terminal',
    'Soft_Dotted',
    'Terminal_Punctuation',
    'Unified_Ideograph',
    'Uppercase',
    'Variation_Selector',
    'White_Space',
    'XID_Continue',
    'XID_Start'
  ];
  for (const prop of binaryProps) {
    assert.strictEqual(canonicalProperties.has(prop), true, `Expected ${prop} to be present`);
    assert.strictEqual(isCanonicalPropertyName(prop), true);
  }
}

// 4. unicode-canonical-property-names-ecmascript returns false for property aliases and unknown names
{
  const nonCanonicalOrUnknown = [
    'gc',
    'sc',
    'scx',
    'IDS',
    'IDC',
    'WSpace',
    'alpha',
    'hex',
    'unknown_property',
    '',
    null,
    undefined,
    123
  ];
  for (const prop of nonCanonicalOrUnknown) {
    assert.strictEqual(canonicalProperties.has(prop), false, `Expected ${prop} to not be in canonical set`);
    assert.strictEqual(isCanonicalPropertyName(prop), false);
  }
}

// 5. unicode-canonical-property-names-ecmascript contains exactly 56 unique canonical property names
{
  assert.strictEqual(canonicalProperties.size, 56);
  const names = getCanonicalPropertyNames();
  assert.strictEqual(names.length, 56);
  assert.strictEqual(new Set(names).size, 56);
}

// 6. unicode-canonical-property-names-ecmascript is iterable and all elements are non-empty strings
{
  for (const name of canonicalProperties) {
    assert.strictEqual(typeof name, 'string');
    assert.ok(name.length > 0);
  }
}

console.log('Contract tests passed successfully.');