entities 6.0.1: decodeXML

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 entities.decodeXML in pkg:npm/entities@6.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/entities@6.0.1
Demonstrate these symbols/APIs:
  - entities.decodeXML

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:dbd8c7e92e22321acd336a57336a167319b42f853bd744aa10a83d3d054e9603","contract":["decodeXML decodes predefined XML entities quot, amp, apos, lt, and gt into corresponding characters","decodeXML decodes decimal and hexadecimal numeric character references","decodeXML strictly requires semicolon termination and preserves unterminated entity references","decodeXML leaves non-XML named entities unchanged","decodeXML returns plain strings without entities and empty strings unchanged"],"goal":"verify entities.decodeXML in pkg:npm/entities@6.0.1","kind":"HOW","packages":["pkg:npm/entities@6.0.1"],"schemaVersion":1,"symbols":["entities.decodeXML"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"esm","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/entities@6.0.1"],"schemaVersion":1,"subject":"pkg:npm/entities@6.0.1","symbols":["entities.decodeXML"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-entities-decodexml",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-entities-decodexml",
      "version": "1.0.0",
      "dependencies": {
        "entities": "6.0.1"
      }
    },
    "node_modules/entities": {
      "version": "6.0.1",
      "resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
      "integrity": "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g==",
      "license": "BSD-2-Clause",
      "engines": {
        "node": ">=0.12"
      },
      "funding": {
        "url": "https://github.com/fb55/entities?sponsor=1"
      }
    }
  }
}

{
  "name": "sample-entities-decodexml",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "entities": "6.0.1"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify entities.decodeXML in pkg:npm/entities@6.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/entities@6.0.1"
  ],
  "symbols": [
    "entities.decodeXML"
  ]
}

import assert from 'node:assert/strict';
import { decodeXML } from 'entities';

// 1. decodeXML decodes predefined XML entities quot, amp, apos, lt, and gt into corresponding characters
assert.equal(decodeXML('&quot;&amp;&apos;&lt;&gt;'), '"&\'<>');
assert.equal(decodeXML('&lt;tag attr=&quot;val&quot;&gt;a &amp; b &apos;c&apos;&lt;/tag&gt;'), '<tag attr="val">a & b \'c\'</tag>');

// 2. decodeXML decodes decimal and hexadecimal numeric character references
assert.equal(decodeXML('&#34;&#38;&#39;&#60;&#62;'), '"&\'<>');
assert.equal(decodeXML('&#x22;&#x26;&#x27;&#x3c;&#x3E;'), '"&\'<>');
assert.equal(decodeXML('&#128512;&#x1F600;'), '😀😀');

// 3. decodeXML strictly requires semicolon termination and preserves unterminated entity references
assert.equal(decodeXML('&amp; &amp'), '& &amp');
assert.equal(decodeXML('&#60; &#60'), '< &#60');
assert.equal(decodeXML('&#x3c; &#x3c'), '< &#x3c');

// 4. decodeXML leaves non-XML named entities unchanged
assert.equal(decodeXML('&copy;&nbsp;&euro;&trade;'), '&copy;&nbsp;&euro;&trade;');
assert.equal(decodeXML('&lt;&copy;&gt;'), '<&copy;>');

// 5. decodeXML returns plain strings without entities and empty strings unchanged
assert.equal(decodeXML('hello world'), 'hello world');
assert.equal(decodeXML(''), '');

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