pathe 2.0.3: isAbsolute

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 pathe.isAbsolute in pkg:npm/pathe@2.0.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/pathe@2.0.3
Demonstrate these symbols/APIs:
  - pathe.isAbsolute

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:sha256:666de8c7d52e5408212e89159d279a9a062cfbdb6fce2be162da8b988b493c08","contract":["pathe.isAbsolute returns true for POSIX root and slash-prefixed paths","pathe.isAbsolute returns true for Windows drive letter paths with slash or backslash","pathe.isAbsolute returns true for Windows UNC paths starting with double slashes","pathe.isAbsolute returns false for relative paths, dot prefixes, and empty strings","pathe.isAbsolute returns false for drive-relative paths without slash and device namespace prefixes","pathe.posix.isAbsolute and pathe.win32.isAbsolute match pathe.isAbsolute behavior"],"goal":"verify pathe.isAbsolute in pkg:npm/pathe@2.0.3","kind":"HOW","packages":["pkg:npm/pathe@2.0.3"],"schemaVersion":1,"symbols":["pathe.isAbsolute"]},"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/pathe@2.0.3"],"schemaVersion":1,"subject":"pkg:npm/pathe@2.0.3","symbols":["pathe.isAbsolute"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-pathe-is-absolute",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-pathe-is-absolute",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "pathe": "2.0.3"
      }
    },
    "node_modules/pathe": {
      "version": "2.0.3",
      "resolved": "https://registry.npmjs.org/pathe/-/pathe-2.0.3.tgz",
      "integrity": "sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==",
      "license": "MIT"
    }
  }
}

{
  "name": "sample-pathe-is-absolute",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification for pathe.isAbsolute in pathe@2.0.3",
  "main": "src/index.js",
  "license": "MIT-0",
  "dependencies": {
    "pathe": "2.0.3"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pathe.isAbsolute in pkg:npm/pathe@2.0.3",
  "kind": "HOW",
  "packages": [
    "pkg:npm/pathe@2.0.3"
  ],
  "symbols": [
    "pathe.isAbsolute"
  ]
}

'use strict';

const { isAbsolute, posix, win32 } = require('pathe');

/**
 * Determines whether the given path string is an absolute path.
 *
 * @param {string} path - The path string to evaluate.
 * @returns {boolean} True if the path is absolute, false otherwise.
 */
function checkIsAbsolute(path) {
  return isAbsolute(path);
}

module.exports = {
  isAbsolute,
  checkIsAbsolute,
  posix,
  win32
};

import assert from 'node:assert/strict';
import { createRequire } from 'node:module';

const require = createRequire(import.meta.url);
const { isAbsolute, checkIsAbsolute, posix, win32 } = require('../src/index.js');

const BSLASH = String.fromCharCode(92);

// 1. pathe.isAbsolute returns true for POSIX root and slash-prefixed paths
assert.equal(isAbsolute('/'), true);
assert.equal(isAbsolute('/usr/bin'), true);
assert.equal(isAbsolute('/etc/hosts'), true);
assert.equal(isAbsolute('/app/project'), true);
assert.equal(checkIsAbsolute('/dir/sub'), true);

// 2. pathe.isAbsolute returns true for Windows drive letter paths with slash or backslash
const winDriveSlash = 'C' + ':/sample_project';
const winDriveBackslash = ['C:', 'sample_project'].join(BSLASH);
const winLowerDrive = 'd' + ':/workspace';
const winUpperDrive = ['Z:', 'archive'].join(BSLASH);
assert.equal(isAbsolute(winDriveSlash), true);
assert.equal(isAbsolute(winDriveBackslash), true);
assert.equal(isAbsolute(winLowerDrive), true);
assert.equal(isAbsolute(winUpperDrive), true);
assert.equal(checkIsAbsolute('D' + ':/data'), true);

// 3. pathe.isAbsolute returns true for Windows UNC paths starting with double slashes
const uncSlash = '//' + 'server/share';
const uncBackslash = ['', '', 'server', 'share'].join(BSLASH);
const uncNas = '//' + 'nas01/backup';
assert.equal(isAbsolute(uncSlash), true);
assert.equal(isAbsolute(uncBackslash), true);
assert.equal(isAbsolute(uncNas), true);
assert.equal(checkIsAbsolute('//' + 'remote/disk'), true);

// 4. pathe.isAbsolute returns false for relative paths, dot prefixes, and empty strings
assert.equal(isAbsolute(''), false);
assert.equal(isAbsolute('relative/file.txt'), false);
assert.equal(isAbsolute('./config.json'), false);
assert.equal(isAbsolute('../parent/dir'), false);
assert.equal(isAbsolute('./'), false);
assert.equal(isAbsolute('../'), false);
assert.equal(checkIsAbsolute('file.js'), false);

// 5. pathe.isAbsolute returns false for drive-relative paths without slash and device namespace prefixes
assert.equal(isAbsolute('C' + ':'), false);
assert.equal(isAbsolute('C' + ':relative_file'), false);
assert.equal(isAbsolute('D' + ':item'), false);
assert.equal(isAbsolute('//./pipe'), false);
const devicePipe = ['', '', '.', 'pipe'].join(BSLASH);
assert.equal(isAbsolute(devicePipe), false);
assert.equal(checkIsAbsolute('C' + ':temp'), false);

// 6. pathe.posix.isAbsolute and pathe.win32.isAbsolute match pathe.isAbsolute behavior
const testPaths = [
  '/',
  '/etc/test',
  'C' + ':/tools',
  ['C:', 'tools'].join(BSLASH),
  '//' + 'server/data',
  'rel/path',
  './rel',
  '../up',
  'C' + ':rel',
  ''
];
for (const p of testPaths) {
  assert.equal(posix.isAbsolute(p), isAbsolute(p));
  assert.equal(win32.isAbsolute(p), isAbsolute(p));
}

console.log('All pathe.isAbsolute contract tests passed successfully.');