node-api-version 0.2.1: fromNodeVersion

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 node-api-version.fromNodeVersion in pkg:npm/node-api-version@0.2.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/node-api-version@0.2.1
Demonstrate these symbols/APIs:
  - node-api-version.fromNodeVersion
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - packageManager: npm@10.9.8
  - 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:ed715dc6850f0f45e92a148e70535822e1f54adee34040905a8e6d3f67836357","constraints":{"executionContext":"node"},"contract":["fromNodeVersion returns highest supported Node-API version number for valid Node.js release versions","fromNodeVersion returns Node-API version 10 for Node.js 22.14+ and 24.x","fromNodeVersion returns undefined for Node.js versions prior to Node-API support","fromNodeVersion returns undefined for invalid or unparseable version strings"],"goal":"verify node-api-version.fromNodeVersion in pkg:npm/node-api-version@0.2.1","kind":"HOW","packages":["pkg:npm/node-api-version@0.2.1"],"schemaVersion":1,"symbols":["node-api-version.fromNodeVersion"]},"contractCommand":["node","test/contract.mjs"],"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/node-api-version@0.2.1"],"schemaVersion":1,"subject":"pkg:npm/node-api-version@0.2.1","symbols":["node-api-version.fromNodeVersion"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-node-api-version",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-node-api-version",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "node-api-version": "0.2.1"
      }
    },
    "node_modules/node-api-version": {
      "version": "0.2.1",
      "resolved": "https://registry.npmjs.org/node-api-version/-/node-api-version-0.2.1.tgz",
      "integrity": "sha512-2xP/IGGMmmSQpI1+O/k72jF/ykvZ89JeuKX3TLJAYPDVLUalrshrLHkeVcCCZqG/eEa635cr8IBYzgnDvM2O8Q==",
      "license": "MIT",
      "dependencies": {
        "semver": "^7.3.5"
      }
    },
    "node_modules/semver": {
      "version": "7.8.5",
      "resolved": "https://registry.npmjs.org/semver/-/semver-7.8.5.tgz",
      "integrity": "sha512-Y7/KDsb8LjooZpwaqGyulO6DQlksgCncchHGk+sZIY4SBvUocMBEFH5Ur1fI4dV+Jvl0w6cjvucaIi40puRioA==",
      "license": "ISC",
      "bin": {
        "semver": "bin/semver.js"
      },
      "engines": {
        "node": ">=10"
      }
    }
  }
}

{
  "name": "sample-node-api-version",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification sample for node-api-version.fromNodeVersion",
  "main": "src/index.js",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "node-api-version": "0.2.1"
  },
  "license": "MIT-0"
}

{
  "schemaVersion": 1,
  "goal": "verify node-api-version.fromNodeVersion in pkg:npm/node-api-version@0.2.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/node-api-version@0.2.1"
  ],
  "symbols": [
    "node-api-version.fromNodeVersion"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

const { fromNodeVersion } = require('node-api-version');

function getNodeApiVersion(nodeVersion) {
  return fromNodeVersion(nodeVersion);
}

function isNodeApiSupported(nodeVersion) {
  return fromNodeVersion(nodeVersion) !== undefined;
}

module.exports = {
  fromNodeVersion,
  getNodeApiVersion,
  isNodeApiSupported
};

import assert from 'node:assert';
import { fromNodeVersion } from 'node-api-version';
import pkg from '../src/index.js';
const { getNodeApiVersion, isNodeApiSupported } = pkg;

// 1. fromNodeVersion returns highest supported Node-API version number for valid Node.js release versions
{
  assert.strictEqual(fromNodeVersion('10.0.0'), 3);
  assert.strictEqual(fromNodeVersion('10.15.3'), 3);
  assert.strictEqual(fromNodeVersion('10.16.0'), 4);
  assert.strictEqual(fromNodeVersion('11.8.0'), 4);
  assert.strictEqual(fromNodeVersion('12.0.0'), 4);
  assert.strictEqual(fromNodeVersion('10.17.0'), 5);
  assert.strictEqual(fromNodeVersion('12.11.0'), 5);
  assert.strictEqual(fromNodeVersion('13.0.0'), 5);
  assert.strictEqual(fromNodeVersion('10.20.0'), 6);
  assert.strictEqual(fromNodeVersion('12.17.0'), 6);
  assert.strictEqual(fromNodeVersion('14.0.0'), 6);
  assert.strictEqual(fromNodeVersion('10.23.0'), 7);
  assert.strictEqual(fromNodeVersion('12.19.0'), 7);
  assert.strictEqual(fromNodeVersion('14.12.0'), 7);
  assert.strictEqual(fromNodeVersion('15.0.0'), 7);
  assert.strictEqual(fromNodeVersion('12.22.0'), 8);
  assert.strictEqual(fromNodeVersion('15.12.0'), 8);
  assert.strictEqual(fromNodeVersion('16.0.0'), 8);
  assert.strictEqual(fromNodeVersion('18.0.0'), 8);
  assert.strictEqual(fromNodeVersion('20.0.0'), 8);
  assert.strictEqual(fromNodeVersion('18.17.0'), 9);
  assert.strictEqual(fromNodeVersion('20.3.0'), 9);
  assert.strictEqual(fromNodeVersion('21.0.0'), 9);
  assert.strictEqual(fromNodeVersion('22.0.0'), 9);

  // Wrapper helpers
  assert.strictEqual(getNodeApiVersion('18.0.0'), 8);
  assert.strictEqual(isNodeApiSupported('18.0.0'), true);
}

// 2. fromNodeVersion returns Node-API version 10 for Node.js 22.14+ and 24.x
{
  assert.strictEqual(fromNodeVersion('22.14.0'), 10);
  assert.strictEqual(fromNodeVersion('23.6.0'), 10);
  assert.strictEqual(fromNodeVersion('24.0.0'), 10);

  // Wrapper helpers
  assert.strictEqual(getNodeApiVersion('24.0.0'), 10);
  assert.strictEqual(isNodeApiSupported('24.0.0'), true);
}

// 3. fromNodeVersion returns undefined for Node.js versions prior to Node-API support
{
  assert.strictEqual(fromNodeVersion('0.10.0'), undefined);
  assert.strictEqual(fromNodeVersion('0.12.0'), undefined);
  assert.strictEqual(fromNodeVersion('4.0.0'), undefined);
  assert.strictEqual(fromNodeVersion('6.0.0'), undefined);
  assert.strictEqual(fromNodeVersion('8.0.0'), undefined);
  assert.strictEqual(fromNodeVersion('9.0.0'), undefined);

  // Wrapper helpers
  assert.strictEqual(getNodeApiVersion('9.0.0'), undefined);
  assert.strictEqual(isNodeApiSupported('9.0.0'), false);
}

// 4. fromNodeVersion returns undefined for invalid or unparseable version strings
{
  assert.strictEqual(fromNodeVersion('invalid'), undefined);
  assert.strictEqual(fromNodeVersion(''), undefined);
  assert.strictEqual(fromNodeVersion('not-a-version'), undefined);

  // Wrapper helpers
  assert.strictEqual(getNodeApiVersion('not-a-version'), undefined);
  assert.strictEqual(isNodeApiSupported('not-a-version'), false);
}

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