bare-path 3.1.1: basename

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 bare-path.basename in pkg:npm/bare-path@3.1.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/bare-path@3.1.1
Demonstrate these symbols/APIs:
  - bare-path.basename

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:sha256:9bd20cb1e90c37f4b9983ce24e9674f7c7a37674de2d2ffb721f201f5a9d12eb","contract":["bare-path exports basename function","basename extracts filename from posix path with leading directories","basename strips matching suffix extension when specified","basename preserves filename when suffix does not match","basename handles root path and trailing slashes correctly","basename throws TypeError when path or suffix is not a string"],"goal":"verify bare-path.basename in pkg:npm/bare-path@3.1.1","kind":"HOW","packages":["pkg:npm/bare-path@3.1.1"],"schemaVersion":1,"symbols":["bare-path.basename"]},"contractCommand":["node","test/contract.cjs"],"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/bare-path@3.1.1"],"schemaVersion":1,"subject":"pkg:npm/bare-path@3.1.1","symbols":["bare-path.basename"],"verifierAdapter":"node-typescript@1"}

'use strict';

// Bare environment compatibility bootstrap when running in Node.js
if (typeof Bare === 'undefined') {
  global.Bare = { platform: process.platform };
}
const origJsExtension = require.extensions['.js'];
require.extensions['.js'] = function (module, filename) {
  if (filename.endsWith('binding.js') && filename.includes('bare-path')) {
    module.exports = {
      cwd: () => process.cwd()
    };
    return;
  }
  return origJsExtension(module, filename);
};

const path = require('bare-path');

/**
 * Returns the last portion of a path, similar to the Unix basename command.
 * @param {string} filepath - Path to evaluate
 * @param {string} [suffix] - Optional suffix to remove from the result
 * @returns {string} The base name of the path
 */
function getBasename(filepath, suffix) {
  return path.basename(filepath, suffix);
}

module.exports = {
  path,
  getBasename
};

{
  "name": "sample-bare-path-basename",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-bare-path-basename",
      "version": "1.0.0",
      "dependencies": {
        "bare-path": "3.1.1"
      }
    },
    "node_modules/bare-path": {
      "version": "3.1.1",
      "resolved": "https://registry.npmjs.org/bare-path/-/bare-path-3.1.1.tgz",
      "integrity": "sha512-JprUlveX3QjApC1cTpsUOiscADftCGVWkzitbHsRqv84hzYwYHw2mbluddsq5TvI8mH/8Ov1f4BiMAdcB0oYnQ==",
      "license": "Apache-2.0"
    }
  }
}

{
  "name": "sample-bare-path-basename",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of bare-path.basename",
  "dependencies": {
    "bare-path": "3.1.1"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify bare-path.basename in pkg:npm/bare-path@3.1.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/bare-path@3.1.1"
  ],
  "symbols": [
    "bare-path.basename"
  ]
}

'use strict';

const assert = require('node:assert/strict');
const { path, getBasename } = require('../index.cjs');

// 1. bare-path exports basename function
assert.equal(typeof path.basename, 'function', 'path.basename must be a function');
assert.equal(typeof getBasename, 'function', 'getBasename must be a function');

// 2. basename extracts filename from posix path with leading directories
assert.equal(getBasename('/foo/bar/baz.html'), 'baz.html');
assert.equal(getBasename('/a/b/c/d.txt'), 'd.txt');
assert.equal(getBasename('qux.txt'), 'qux.txt');

// 3. basename strips matching suffix extension when specified
assert.equal(getBasename('/foo/bar/baz.html', '.html'), 'baz');
assert.equal(getBasename('archive.tar.gz', '.tar.gz'), 'archive');
assert.equal(getBasename('file.ext', '.ext'), 'file');

// 4. basename preserves filename when suffix does not match
assert.equal(getBasename('/foo/bar/baz.html', '.txt'), 'baz.html');
assert.equal(getBasename('baz.html', 'html'), 'baz.');

// 5. basename handles root path and trailing slashes correctly
assert.equal(getBasename('/'), '');
assert.equal(getBasename('/foo/bar/'), 'bar');
assert.equal(getBasename('///'), '');
assert.equal(getBasename(''), '');

// 6. basename throws TypeError when path or suffix is not a string
assert.throws(() => getBasename(123), { name: 'TypeError' });
assert.throws(() => getBasename('/foo/bar', 123), { name: 'TypeError' });

console.log('Contract test passed.');