index.js
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index.js
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	import fs from 'node:fs';
	import path from 'node:path';
	import os from 'node:os';
	import * as tar from 'tar';

	const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'tar-test-'));
	const src = path.join(tmp, 'src');
	const dest = path.join(tmp, 'dest');
	const archive = path.join(tmp, 'test.tar.gz');

	fs.mkdirSync(src, { recursive: true });
	fs.writeFileSync(path.join(src, 'hello.txt'), 'Hello, World!\n');
	fs.writeFileSync(path.join(src, 'data.json'), '{"a":1}');
	fs.mkdirSync(path.join(dest), { recursive: true });

	async function run() {
	console.log('1. Creating tarball...');
	await tar.create({ file: archive, cwd: tmp, gzip: true }, ['src']);
	if (!fs.existsSync(archive) \|\| fs.statSync(archive).size === 0) {
	console.log('FAIL — archive not created');
	process.exit(1);
	}
	console.log(' OK — archive created (%d bytes)', fs.statSync(archive).size);

	console.log('2. Extracting tarball...');
	await tar.extract({ file: archive, cwd: dest });
	if (!fs.existsSync(path.join(dest, 'src', 'hello.txt'))) {
	console.log('FAIL — files not extracted');
	process.exit(1);
	}
	console.log(' OK — files extracted');

	console.log('3. Verifying contents...');
	const original1 = fs.readFileSync(path.join(src, 'hello.txt'), 'utf8');
	const extracted1 = fs.readFileSync(path.join(dest, 'src', 'hello.txt'), 'utf8');
	const original2 = fs.readFileSync(path.join(src, 'data.json'), 'utf8');
	const extracted2 = fs.readFileSync(path.join(dest, 'src', 'data.json'), 'utf8');

	if (original1 !== extracted1 \|\| original2 !== extracted2) {
	console.log('FAIL — content mismatch');
	process.exit(1);
	}
	console.log(' OK — contents match');

	console.log('\nAll good.');
	fs.rmSync(tmp, { recursive: true, force: true });
	}

	run().catch(err => {
	console.error('FAIL —', err.message);
	fs.rmSync(tmp, { recursive: true, force: true });
	process.exit(1);
	});

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