semver 5.7.2: gt

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 semver.gt in pkg:npm/semver@5.7.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/semver@5.7.2
Demonstrate these symbols/APIs:
  - semver.gt
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:sha256:9beafa20dd24d4ee90f4f964f426e86932e3b531ba9e06e0ff16383f22c4a9ea","constraints":{"executionContext":"node"},"contract":["assert semver.gt returns true when the first version is greater than the second by major, minor, or patch","assert semver.gt returns false when the first version is less than or equal to the second version","assert semver.gt correctly prioritizes release versions over prerelease versions with the same major.minor.patch","assert semver.gt compares prerelease identifiers by numerical and alphabetical precedence","assert semver.gt ignores build metadata when determining version precedence","assert semver.gt supports loose mode to compare version strings with prefixes or whitespace","assert semver.gt throws a TypeError when given an invalid semver string in strict mode"],"goal":"verify semver.gt in pkg:npm/semver@5.7.2","kind":"HOW","packages":["pkg:npm/semver@5.7.2"],"schemaVersion":1,"symbols":["semver.gt"]},"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/semver@5.7.2"],"schemaVersion":1,"subject":"pkg:npm/semver@5.7.2","symbols":["semver.gt"],"verifierAdapter":"node-typescript@1"}

const semver = require('semver');

/**
 * Compares two semantic version strings to determine if the first is greater than the second.
 *
 * @param {string} v1 - First version string.
 * @param {string} v2 - Second version string.
 * @param {boolean} [loose=false] - Whether to allow loose parsing.
 * @returns {boolean} True if v1 is strictly greater than v2, false otherwise.
 */
function isGreaterThan(v1, v2, loose) {
  return semver.gt(v1, v2, loose);
}

module.exports = {
  isGreaterThan,
  semver,
};

{
  "name": "sample-semver-gt",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-semver-gt",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "semver": "5.7.2"
      }
    },
    "node_modules/semver": {
      "version": "5.7.2",
      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.2.tgz",
      "integrity": "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g==",
      "license": "ISC",
      "bin": {
        "semver": "bin/semver"
      }
    }
  }
}

{
  "name": "sample-semver-gt",
  "version": "1.0.0",
  "description": "Clean-room sample verifying semver.gt in semver 5.7.2",
  "main": "index.js",
  "license": "MIT-0",
  "dependencies": {
    "semver": "5.7.2"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify semver.gt in pkg:npm/semver@5.7.2",
  "kind": "HOW",
  "packages": [
    "pkg:npm/semver@5.7.2"
  ],
  "symbols": [
    "semver.gt"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

import assert from 'node:assert';
import semver from 'semver';
import { isGreaterThan } from '../index.js';

// 1. Major, minor, and patch greater than comparisons
assert.strictEqual(
  isGreaterThan('2.0.0', '1.9.9'),
  true,
  'semver.gt must return true when major version is greater'
);
assert.strictEqual(
  isGreaterThan('1.3.0', '1.2.9'),
  true,
  'semver.gt must return true when minor version is greater'
);
assert.strictEqual(
  isGreaterThan('1.2.4', '1.2.3'),
  true,
  'semver.gt must return true when patch version is greater'
);

// 2. Returns false when less than or equal
assert.strictEqual(
  isGreaterThan('1.0.0', '1.0.0'),
  false,
  'semver.gt must return false for equal versions'
);
assert.strictEqual(
  isGreaterThan('1.0.0', '2.0.0'),
  false,
  'semver.gt must return false when first version is smaller'
);

// 3. Release version vs prerelease version
assert.strictEqual(
  isGreaterThan('1.0.0', '1.0.0-beta.1'),
  true,
  'semver.gt must prioritize release version over prerelease version'
);
assert.strictEqual(
  isGreaterThan('1.0.0-beta.1', '1.0.0'),
  false,
  'semver.gt must return false when comparing prerelease to release of same version'
);

// 4. Prerelease identifier precedence
assert.strictEqual(
  isGreaterThan('1.0.0-beta.2', '1.0.0-beta.1'),
  true,
  'semver.gt must compare numerical prerelease segments'
);
assert.strictEqual(
  isGreaterThan('1.0.0-beta', '1.0.0-alpha'),
  true,
  'semver.gt must compare alphabetical prerelease segments'
);
assert.strictEqual(
  isGreaterThan('1.0.0-beta.1', '1.0.0-beta'),
  true,
  'semver.gt must prioritize prereleases with more fields'
);

// 5. Build metadata is ignored in version precedence
assert.strictEqual(
  isGreaterThan('1.0.0+build.1', '1.0.0+build.2'),
  false,
  'semver.gt must ignore build metadata when versions are otherwise identical'
);
assert.strictEqual(
  isGreaterThan('1.0.1+build.1', '1.0.0+build.2'),
  true,
  'semver.gt must determine precedence from version core even when build metadata is present'
);

// 6. Loose mode handling
assert.strictEqual(
  isGreaterThan('v2.0.0', 'v1.0.0', true),
  true,
  'semver.gt must handle v-prefix in loose mode'
);
assert.strictEqual(
  isGreaterThan('  =2.0.0  ', '1.0.0', true),
  true,
  'semver.gt must handle whitespace and equal prefix in loose mode'
);

// 7. Throws TypeError on invalid semver string in strict mode
assert.throws(
  () => {
    isGreaterThan('invalid-version', '1.0.0');
  },
  {
    name: 'TypeError',
    message: /Invalid Version: invalid-version/
  },
  'semver.gt must throw TypeError when given invalid semver in strict mode'
);

console.log('All semver.gt contract assertions passed successfully.');