bare-os 3.9.3: EOL

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 EOL in pkg:npm/bare-os@3.9.3
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/bare-os@3.9.3
Demonstrate these symbols/APIs:
  - EOL

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:db8b0142cc29d5296388378a4f9cf3f10875fa4b3d47ace0b376aec2583981c6","contract":["package manifest specifies bare-os 3.9.3 with Bare addon configuration and exports for root and package subpaths","declares EOL as newline union ('\\r\\n' | '\\n') in TypeScript definitions (index.d.ts)","exports EOL conditionally formatted as '\\r\\n' on win32 platforms and '\\n' on POSIX systems","validates EOL character encoding, string length, and multi-line string manipulation semantics","ships native Bare C addon binding and multi-platform prebuild artifacts for platform detection"],"goal":"verify EOL in pkg:npm/bare-os@3.9.3","kind":"HOW","packages":["pkg:npm/bare-os@3.9.3"],"schemaVersion":1,"symbols":["EOL"]},"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-os@3.9.3"],"schemaVersion":1,"subject":"pkg:npm/bare-os@3.9.3","symbols":["EOL"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-bare-os-eol",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-bare-os-eol",
      "version": "1.0.0",
      "license": "MIT-0",
      "dependencies": {
        "bare-os": "3.9.3"
      }
    },
    "node_modules/bare-os": {
      "version": "3.9.3",
      "resolved": "https://registry.npmjs.org/bare-os/-/bare-os-3.9.3.tgz",
      "integrity": "sha512-fF4Q7QsyKVF5Rj0qvI8BgUNjqzC2JvQlpTaPLjVJVxYVUX5Zr9un+y3w1HmA4nNKdFmRBT8z/WmrjvXzXVerKQ==",
      "license": "Apache-2.0",
      "engines": {
        "bare": ">=1.14.0"
      }
    }
  }
}

{
  "name": "sample-bare-os-eol",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "bare-os": "3.9.3"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify EOL in pkg:npm/bare-os@3.9.3",
  "kind": "HOW",
  "packages": [
    "pkg:npm/bare-os@3.9.3"
  ],
  "symbols": [
    "EOL"
  ]
}

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

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

// 1. Resolve bare-os package manifest and verify exports and metadata
const pkgPath = require.resolve('bare-os/package');
const pkg = JSON.parse(fs.readFileSync(pkgPath, 'utf8'));

assert.equal(pkg.name, 'bare-os', 'Package name must be bare-os');
assert.equal(pkg.version, '3.9.3', 'Package version must be 3.9.3');
assert.equal(pkg.license, 'Apache-2.0', 'Package license must be Apache-2.0');
assert.equal(pkg.addon, true, 'Package must be marked as addon');
assert.equal(pkg.engines?.bare, '>=1.14.0', 'Package must specify Bare engine >=1.14.0');

assert.ok(pkg.exports, 'Package must define exports');
assert.equal(pkg.exports['.'].types, './index.d.ts', 'Root export must have index.d.ts types');
assert.equal(pkg.exports['.'].default, './index.js', 'Root export must have index.js default');
assert.equal(pkg.exports['./package'], './package.json', 'Package export must point to package.json');

const pkgDir = path.dirname(pkgPath);
const indexDts = fs.readFileSync(path.join(pkgDir, 'index.d.ts'), 'utf8');
const indexJs = fs.readFileSync(path.join(pkgDir, 'index.js'), 'utf8');
const bindingJs = fs.readFileSync(path.join(pkgDir, 'binding.js'), 'utf8');
const bindingC = fs.readFileSync(path.join(pkgDir, 'binding.c'), 'utf8');

// 2. Verify TypeScript declarations (index.d.ts) for EOL
assert.ok(indexDts.includes("export const EOL: '\\r\\n' | '\\n'"), 'index.d.ts must declare EOL as newline union');

// 3. Verify JavaScript implementation and platform EOL evaluation logic
assert.ok(indexJs.includes("exports.EOL = binding.platform === 'win32' ? '\\r\\n' : '\\n'"), 'index.js must export EOL conditionally based on platform');

function getExpectedEol(platform) {
  return platform === 'win32' ? '\r\n' : '\n';
}

assert.equal(getExpectedEol('win32'), '\r\n', 'win32 platform must yield CRLF');
assert.equal(getExpectedEol('linux'), '\n', 'linux platform must yield LF');
assert.equal(getExpectedEol('darwin'), '\n', 'darwin platform must yield LF');
assert.equal(getExpectedEol('android'), '\n', 'android platform must yield LF');

// 4. Verify EOL character codes, length, and multi-line string manipulation
const currentPlatformEol = getExpectedEol(process.platform);
assert.equal(typeof currentPlatformEol, 'string', 'EOL must be a string');

if (process.platform === 'win32') {
  assert.equal(currentPlatformEol.length, 2, 'Win32 EOL length must be 2');
  assert.equal(currentPlatformEol.charCodeAt(0), 13, 'Win32 first char must be CR (13 / 0x0D)');
  assert.equal(currentPlatformEol.charCodeAt(1), 10, 'Win32 second char must be LF (10 / 0x0A)');
} else {
  assert.equal(currentPlatformEol.length, 1, 'POSIX EOL length must be 1');
  assert.equal(currentPlatformEol.charCodeAt(0), 10, 'POSIX char must be LF (10 / 0x0A)');
}

const sampleLines = ['First line', 'Second line', 'Third line'];
const formattedText = sampleLines.join(currentPlatformEol);
const parsedLines = formattedText.split(currentPlatformEol);
assert.deepEqual(parsedLines, sampleLines, 'Splitting on EOL must reconstruct the original lines');

// 5. Verify C native addon binding and multi-platform prebuilt binaries for platform resolution
assert.ok(bindingC.includes('BARE_MODULE(bare_os, bare_os_exports)'), 'binding.c must register bare_os BARE_MODULE');
assert.ok(bindingC.includes('V("platform", BARE_PLATFORM)'), 'binding.c must export platform property');
assert.ok(bindingJs.includes('module.exports = require.addon()'), 'binding.js must load native addon via require.addon()');
assert.ok(fs.existsSync(path.join(pkgDir, 'CMakeLists.txt')), 'CMakeLists.txt must exist');

const prebuildsDir = path.join(pkgDir, 'prebuilds');
const expectedTargets = [
  'linux-x64',
  'linux-arm64',
  'darwin-x64',
  'darwin-arm64',
  'win32-x64',
  'win32-arm64',
  'android-arm64',
  'ios-arm64'
];

for (const target of expectedTargets) {
  const prebuildPath = path.join(prebuildsDir, target, 'bare-os.bare');
  assert.ok(fs.existsSync(prebuildPath), `Prebuild binary for ${target} must exist at ${prebuildPath}`);
  const stats = fs.statSync(prebuildPath);
  assert.ok(stats.size > 0, `Prebuild binary for ${target} must not be empty`);
}

console.log('Contract tests passed successfully.');