bare-path 3.1.1: relative

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.relative 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.relative
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:sha256:3c40ec490b21df234ccd127cd9127cb24d4b59459d0b8f38824f17a5b4caa6e2","constraints":{"executionContext":"node"},"contract":["bare-path exports relative function","bare-path relative returns empty string when source and destination are identical","bare-path relative computes relative path between absolute paths","bare-path relative resolves parent and nested directory relationships","bare-path relative rejects non-string arguments with TypeError"],"goal":"verify bare-path.relative in pkg:npm/bare-path@3.1.1","kind":"HOW","packages":["pkg:npm/bare-path@3.1.1"],"schemaVersion":1,"symbols":["bare-path.relative"]},"contractCommand":["node","test/contract.cjs"],"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/bare-path@3.1.1"],"schemaVersion":1,"subject":"pkg:npm/bare-path@3.1.1","symbols":["bare-path.relative"],"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');

/**
 * Computes the relative path from one path to another.
 * @param {string} from
 * @param {string} to
 * @returns {string}
 */
function getRelativePath(from, to) {
  return path.relative(from, to);
}

module.exports = {
  path,
  getRelativePath
};

{
  "name": "sample-bare-path-relative",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-bare-path-relative",
      "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-relative",
  "version": "1.0.0",
  "private": true,
  "description": "Clean-room verification of bare-path.relative",
  "dependencies": {
    "bare-path": "3.1.1"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify bare-path.relative in pkg:npm/bare-path@3.1.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/bare-path@3.1.1"
  ],
  "symbols": [
    "bare-path.relative"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

'use strict';

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

// 1. bare-path exports relative function
assert.equal(typeof path.relative, 'function', 'path.relative must be a function');
assert.equal(typeof getRelativePath, 'function', 'getRelativePath helper must be a function');

// 2. bare-path relative returns empty string when source and destination are identical
assert.equal(path.relative('/data/orandea/test/aaa', '/data/orandea/test/aaa'), '');
assert.equal(path.relative('foo/bar', 'foo/bar'), '');
assert.equal(getRelativePath('/app/data/log', '/app/data/log'), '');

// 3. bare-path relative computes relative path between absolute paths
assert.equal(path.relative('/data/orandea/test/aaa', '/data/orandea/impl/bbb'), '../../impl/bbb');
assert.equal(path.relative('/app/lib', '/app/src/components'), '../src/components');
assert.equal(getRelativePath('/project/src', '/project/docs/readme.txt'), '../docs/readme.txt');

// 4. bare-path relative resolves parent and nested directory relationships
assert.equal(path.relative('/a/b', '/a/b/c/d'), 'c/d');
assert.equal(path.relative('/a/b/c/d', '/a/b'), '../..');
assert.equal(path.relative('/a/b/c', '/a/d/e'), '../../d/e');

// 5. bare-path relative rejects non-string arguments with TypeError
assert.throws(
  () => path.relative(123, '/project/app'),
  { name: 'TypeError' }
);
assert.throws(
  () => path.relative('/project/app', null),
  { name: 'TypeError' }
);
assert.throws(
  () => getRelativePath(undefined, '/project/app'),
  { name: 'TypeError' }
);

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