bare-os 3.9.3: uptime

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-os.uptime 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:
  - bare-os.uptime

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:sha256:80a27beea8118a99aba7f537f15dc906fb5bb71507d6380d1c8c50c0da6c3a2b","contract":["declares uptime function in index.d.ts returning number type for system uptime in seconds","defines uptime in index.js delegating execution to native binding uptime method","implements bare_os_uptime in binding.c invoking uv_uptime and returning uptime as double number","registers uptime symbol in addon native exports definition table","verifies bare-os package manifest exports mapping, CMake build specification, and prebuild artifacts"],"goal":"verify bare-os.uptime in pkg:npm/bare-os@3.9.3","kind":"HOW","packages":["pkg:npm/bare-os@3.9.3"],"schemaVersion":1,"symbols":["bare-os.uptime"]},"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":["bare-os.uptime"],"verifierAdapter":"node-typescript@1"}

{
  "name": "sample-bare-os-uptime",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-bare-os-uptime",
      "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-uptime",
  "version": "1.0.0",
  "private": true,
  "type": "module",
  "license": "MIT-0",
  "dependencies": {
    "bare-os": "3.9.3"
  }
}

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

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

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 indexDtsPath = path.join(pkgDir, 'index.d.ts');
const indexJsPath = path.join(pkgDir, 'index.js');
const bindingCPath = path.join(pkgDir, 'binding.c');
const bindingJsPath = path.join(pkgDir, 'binding.js');

// 2. Verify uptime TypeScript declaration in index.d.ts
assert.ok(fs.existsSync(indexDtsPath), 'index.d.ts must exist');
const indexDts = fs.readFileSync(indexDtsPath, 'utf8');
assert.match(
  indexDts,
  /export\s+function\s+uptime\(\)\s*:\s*number/,
  'index.d.ts must declare uptime(): number'
);

// 3. Verify uptime export in index.js
assert.ok(fs.existsSync(indexJsPath), 'index.js must exist');
const indexJs = fs.readFileSync(indexJsPath, 'utf8');
assert.match(
  indexJs,
  /exports\.uptime\s*=\s*function\s+uptime\s*\(\)\s*\{\s*return\s+binding\.uptime\(\)\s*\}/,
  'index.js must define uptime delegating to binding.uptime()'
);

// 4. Verify native C binding implementation in binding.c
assert.ok(fs.existsSync(bindingCPath), 'binding.c must exist');
const bindingC = fs.readFileSync(bindingCPath, 'utf8');

// Verify bare_os_uptime C function implementation
assert.ok(
  bindingC.includes('bare_os_uptime(js_env_t *env, js_callback_info_t *info)'),
  'binding.c must implement bare_os_uptime callback function'
);
assert.ok(
  bindingC.includes('uv_uptime(&uptime)'),
  'bare_os_uptime must call uv_uptime to retrieve system uptime'
);
assert.ok(
  bindingC.includes('js_create_double(env, uptime, &result)'),
  'bare_os_uptime must construct double js number from uptime'
);

// Verify export registration in addon init
assert.ok(
  bindingC.includes('V("uptime", bare_os_uptime)'),
  'binding.c must register uptime in exports table'
);

// 5. Verify system uptime contract semantics
const systemUptime = os.uptime();
assert.equal(typeof systemUptime, 'number', 'Uptime must be a number');
assert.ok(systemUptime >= 0, 'Uptime must be non-negative');
assert.ok(Number.isFinite(systemUptime), 'Uptime must be a finite number');

// 6. Verify C native addon binding and multi-platform prebuilt binaries
assert.ok(fs.existsSync(bindingJsPath), 'binding.js must exist');
const bindingJs = fs.readFileSync(bindingJsPath, 'utf8');
assert.ok(bindingC.includes('BARE_MODULE(bare_os, bare_os_exports)'), 'binding.c must register bare_os BARE_MODULE');
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 passed: bare-os.uptime in pkg:npm/bare-os@3.9.3 successfully verified');