bare-path 3.1.1: join

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.join 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.join

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:sha256:65396eee1f1bd4121b4a1d59f61dae23bd370fb7545fcf24fd8914f4f82a9b4c","contract":["join is exported as a function on bare-path, bare-path.posix, and bare-path.win32","join with zero arguments or empty string returns '.'","join concatenates path segments, resolving relative '..' and '.' specifiers with posix separators","win32.join concatenates path segments using backslash separators","join throws a TypeError when any argument is not a string"],"goal":"verify bare-path.join in pkg:npm/bare-path@3.1.1","kind":"HOW","packages":["pkg:npm/bare-path@3.1.1"],"schemaVersion":1,"symbols":["bare-path.join"]},"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/bare-path@3.1.1"],"schemaVersion":1,"subject":"pkg:npm/bare-path@3.1.1","symbols":["bare-path.join"],"verifierAdapter":"node-typescript@1"}

import { createRequire } from 'node:module';
import path from 'node:path';

const require = createRequire(import.meta.url);

if (typeof Bare === 'undefined') {
  globalThis.Bare = { platform: process.platform };
  const mockBinding = {
    cwd() {
      return process.cwd();
    }
  };

  const mainPath = require.resolve('bare-path');
  const bindingPath = path.join(path.dirname(mainPath), 'binding.js');
  require.cache[bindingPath] = {
    id: bindingPath,
    filename: bindingPath,
    loaded: true,
    exports: mockBinding
  };
}

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

/**
 * Joins multiple path segments into a single normalized path.
 * @param {...string} paths
 * @returns {string}
 */
export function joinPaths(...paths) {
  return barePath.join(...paths);
}

export default barePath;

{
  "name": "sample-bare-path-join",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-bare-path-join",
      "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-join",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "bare-path": "3.1.1"
  }
}

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

import assert from 'node:assert/strict';
import barePath, { joinPaths } from '../index.js';

// 1. join is exported as a function on bare-path, bare-path.posix, and bare-path.win32
assert.strictEqual(typeof barePath.join, 'function', 'barePath.join must be a function');
assert.strictEqual(typeof barePath.posix.join, 'function', 'barePath.posix.join must be a function');
assert.strictEqual(typeof barePath.win32.join, 'function', 'barePath.win32.join must be a function');

// 2. join with zero arguments or empty string returns '.'
assert.strictEqual(barePath.join(), '.', 'barePath.join() must return "."');
assert.strictEqual(barePath.join(''), '.', 'barePath.join("") must return "."');
assert.strictEqual(joinPaths(), '.', 'joinPaths helper must return "."');

// 3. join concatenates path segments, resolving relative '..' and '.' specifiers with posix separators
const joined = barePath.join('foo', 'bar', 'baz');
assert.strictEqual(joined, 'foo/bar/baz', 'barePath.join must concatenate segments');

const resolved = barePath.join('foo', 'bar/..', 'baz');
assert.strictEqual(resolved, 'foo/baz', 'barePath.join must resolve parent directory navigation');

const helperJoined = joinPaths('foo', 'bar', 'baz');
assert.strictEqual(helperJoined, 'foo/bar/baz', 'joinPaths helper must match barePath.join output');

const posixJoined = barePath.posix.join('base', 'dir', 'subdir');
assert.strictEqual(posixJoined, 'base/dir/subdir', 'posix.join must join with forward slash');

// 4. win32.join concatenates path segments using backslash separators
const win32Joined = barePath.win32.join('base', 'dir', 'file.txt');
assert.strictEqual(win32Joined, 'base\\dir\\file.txt', 'win32.join must join with backslashes');

// 5. join throws a TypeError when any argument is not a string
assert.throws(() => barePath.join(123), { name: 'TypeError' }, 'must throw TypeError on non-string input');
assert.throws(() => barePath.join('foo', null), { name: 'TypeError' }, 'must throw TypeError on null input');
assert.throws(() => barePath.join(undefined), { name: 'TypeError' }, 'must throw TypeError on undefined input');
assert.throws(() => joinPaths('foo', 42), { name: 'TypeError' }, 'helper must throw TypeError on non-string input');

console.log('Contract verification finished successfully.');